diff options
Diffstat (limited to 'mesalib/src/mesa/main')
| -rw-r--r-- | mesalib/src/mesa/main/extensions.c | 4 | ||||
| -rw-r--r-- | mesalib/src/mesa/main/formats.c | 40 | ||||
| -rw-r--r-- | mesalib/src/mesa/main/formats.h | 8 | ||||
| -rw-r--r-- | mesalib/src/mesa/main/glheader.h | 330 | ||||
| -rw-r--r-- | mesalib/src/mesa/main/image.c | 3770 | ||||
| -rw-r--r-- | mesalib/src/mesa/main/mipmap.c | 9 | ||||
| -rw-r--r-- | mesalib/src/mesa/main/mtypes.h | 2 | ||||
| -rw-r--r-- | mesalib/src/mesa/main/texcompress.c | 19 | ||||
| -rw-r--r-- | mesalib/src/mesa/main/texcompress_rgtc.c | 68 | ||||
| -rw-r--r-- | mesalib/src/mesa/main/texcompress_rgtc.h | 17 | ||||
| -rw-r--r-- | mesalib/src/mesa/main/texfetch.c | 28 | ||||
| -rw-r--r-- | mesalib/src/mesa/main/texformat.c | 29 | ||||
| -rw-r--r-- | mesalib/src/mesa/main/teximage.c | 22 | ||||
| -rw-r--r-- | mesalib/src/mesa/main/texstore.c | 9 |
14 files changed, 2306 insertions, 2049 deletions
diff --git a/mesalib/src/mesa/main/extensions.c b/mesalib/src/mesa/main/extensions.c index 3840cdc5d..68740e24c 100644 --- a/mesalib/src/mesa/main/extensions.c +++ b/mesalib/src/mesa/main/extensions.c @@ -181,6 +181,7 @@ static const struct extension extension_table[] = { { "GL_EXT_texture3D", o(EXT_texture3D), GL }, { "GL_EXT_texture_array", o(EXT_texture_array), GL }, { "GL_EXT_texture_compression_dxt1", o(EXT_texture_compression_s3tc), GL | ES1 | ES2 }, + { "GL_EXT_texture_compression_latc", o(EXT_texture_compression_latc), GL }, { "GL_EXT_texture_compression_rgtc", o(ARB_texture_compression_rgtc), GL }, { "GL_EXT_texture_compression_s3tc", o(EXT_texture_compression_s3tc), GL }, { "GL_EXT_texture_cube_map", o(ARB_texture_cube_map), GL }, @@ -258,6 +259,7 @@ static const struct extension extension_table[] = { { "GL_ATI_envmap_bumpmap", o(ATI_envmap_bumpmap), GL }, { "GL_ATI_fragment_shader", o(ATI_fragment_shader), GL }, { "GL_ATI_separate_stencil", o(ATI_separate_stencil), GL }, + { "GL_ATI_texture_compression_3dc", o(ATI_texture_compression_3dc), GL }, { "GL_ATI_texture_env_combine3", o(ATI_texture_env_combine3), GL }, { "GL_ATI_texture_mirror_once", o(ATI_texture_mirror_once), GL }, { "GL_IBM_multimode_draw_arrays", o(IBM_multimode_draw_arrays), GL }, @@ -448,6 +450,7 @@ _mesa_enable_sw_extensions(struct gl_context *ctx) #if FEATURE_ATI_fragment_shader ctx->Extensions.ATI_fragment_shader = GL_TRUE; #endif + ctx->Extensions.ATI_texture_compression_3dc = GL_TRUE; ctx->Extensions.ATI_texture_env_combine3 = GL_TRUE; ctx->Extensions.ATI_texture_mirror_once = GL_TRUE; ctx->Extensions.ATI_separate_stencil = GL_TRUE; @@ -483,6 +486,7 @@ _mesa_enable_sw_extensions(struct gl_context *ctx) ctx->Extensions.EXT_stencil_wrap = GL_TRUE; ctx->Extensions.EXT_stencil_two_side = GL_TRUE; ctx->Extensions.EXT_texture_array = GL_TRUE; + ctx->Extensions.EXT_texture_compression_latc = GL_TRUE; ctx->Extensions.EXT_texture_env_add = GL_TRUE; ctx->Extensions.EXT_texture_env_combine = GL_TRUE; ctx->Extensions.EXT_texture_env_dot3 = GL_TRUE; diff --git a/mesalib/src/mesa/main/formats.c b/mesalib/src/mesa/main/formats.c index 947db84a6..db10c9b4c 100644 --- a/mesalib/src/mesa/main/formats.c +++ b/mesalib/src/mesa/main/formats.c @@ -927,6 +927,42 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] = 0, 0, 0, 0, 0, 4, 4, 16 /* 16 bytes per 4x4 block */ }, + { + MESA_FORMAT_L_LATC1, + "MESA_FORMAT_L_LATC1", + GL_LUMINANCE, + GL_UNSIGNED_NORMALIZED, + 0, 0, 0, 0, + 4, 0, 0, 0, 0, + 4, 4, 8 /* 8 bytes per 4x4 block */ + }, + { + MESA_FORMAT_SIGNED_L_LATC1, + "MESA_FORMAT_SIGNED_L_LATC1", + GL_LUMINANCE, + GL_SIGNED_NORMALIZED, + 0, 0, 0, 0, + 4, 0, 0, 0, 0, + 4, 4, 8 /* 8 bytes per 4x4 block */ + }, + { + MESA_FORMAT_LA_LATC2, + "MESA_FORMAT_LA_LATC2", + GL_LUMINANCE_ALPHA, + GL_UNSIGNED_NORMALIZED, + 0, 0, 0, 4, + 4, 0, 0, 0, 0, + 4, 4, 16 /* 16 bytes per 4x4 block */ + }, + { + MESA_FORMAT_SIGNED_LA_LATC2, + "MESA_FORMAT_SIGNED_LA_LATC2", + GL_LUMINANCE_ALPHA, + GL_SIGNED_NORMALIZED, + 0, 0, 0, 4, + 4, 0, 0, 0, 0, + 4, 4, 16 /* 16 bytes per 4x4 block */ + }, }; @@ -1570,6 +1606,10 @@ _mesa_format_to_type_and_comps(gl_format format, case MESA_FORMAT_SIGNED_RED_RGTC1: case MESA_FORMAT_RG_RGTC2: case MESA_FORMAT_SIGNED_RG_RGTC2: + case MESA_FORMAT_L_LATC1: + case MESA_FORMAT_SIGNED_L_LATC1: + case MESA_FORMAT_LA_LATC2: + case MESA_FORMAT_SIGNED_LA_LATC2: /* XXX generate error instead? */ *datatype = GL_UNSIGNED_BYTE; *comps = 0; diff --git a/mesalib/src/mesa/main/formats.h b/mesalib/src/mesa/main/formats.h index e21967e2b..04a18930b 100644 --- a/mesalib/src/mesa/main/formats.h +++ b/mesalib/src/mesa/main/formats.h @@ -185,6 +185,14 @@ typedef enum MESA_FORMAT_RG_RGTC2, MESA_FORMAT_SIGNED_RG_RGTC2, /*@}*/ + + /*@{*/ + MESA_FORMAT_L_LATC1, + MESA_FORMAT_SIGNED_L_LATC1, + MESA_FORMAT_LA_LATC2, + MESA_FORMAT_SIGNED_LA_LATC2, + /*@}*/ + MESA_FORMAT_COUNT } gl_format; diff --git a/mesalib/src/mesa/main/glheader.h b/mesalib/src/mesa/main/glheader.h index 5ca44deb0..0df811986 100644 --- a/mesalib/src/mesa/main/glheader.h +++ b/mesalib/src/mesa/main/glheader.h @@ -1,163 +1,167 @@ -/*
- * Mesa 3-D graphics library
- * Version: 7.5
- *
- * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-
-/**
- * \file glheader.h
- * Wrapper for GL/gl.h and GL/glext.h
- */
-
-
-#ifndef GLHEADER_H
-#define GLHEADER_H
-
-
-#ifdef WGLAPI
-#undef WGLAPI
-#endif
-
-
-#if !defined(OPENSTEP) && (defined(__WIN32__) && !defined(__CYGWIN__)) && !defined(BUILD_FOR_SNAP)
-# if (defined(_MSC_VER) || defined(__MINGW32__)) && defined(BUILD_GL32) /* tag specify we're building mesa as a DLL */
-# define WGLAPI __declspec(dllexport)
-# elif (defined(_MSC_VER) || defined(__MINGW32__)) && defined(_DLL) /* tag specifying we're building for DLL runtime support */
-# define WGLAPI __declspec(dllimport)
-# else /* for use with static link lib build of Win32 edition only */
-# define WGLAPI __declspec(dllimport)
-# endif /* _STATIC_MESA support */
-#endif /* WIN32 / CYGWIN bracket */
-
-
-#define GL_GLEXT_PROTOTYPES
-#include "GL/gl.h"
-#include "GL/glext.h"
-
-
-/**
- * GL_FIXED is defined in glext.h version 64 but these typedefs aren't (yet).
- */
-typedef int GLfixed;
-typedef int GLclampx;
-
-
-#ifndef GL_OES_EGL_image
-typedef void *GLeglImageOES;
-#endif
-
-
-#ifndef GL_OES_point_size_array
-#define GL_POINT_SIZE_ARRAY_OES 0x8B9C
-#define GL_POINT_SIZE_ARRAY_TYPE_OES 0x898A
-#define GL_POINT_SIZE_ARRAY_STRIDE_OES 0x898B
-#define GL_POINT_SIZE_ARRAY_POINTER_OES 0x898C
-#define GL_POINT_SIZE_ARRAY_BUFFER_BINDING_OES 0x8B9F
-#endif
-
-
-#ifndef GL_OES_draw_texture
-#define GL_TEXTURE_CROP_RECT_OES 0x8B9D
-#endif
-
-
-#ifndef GL_PROGRAM_BINARY_LENGTH_OES
-#define GL_PROGRAM_BINARY_LENGTH_OES 0x8741
-#endif
-
-/* GLES 2.0 tokens */
-#ifndef GL_RGB565
-#define GL_RGB565 0x8D62
-#endif
-
-#ifndef GL_TEXTURE_GEN_STR_OES
-#define GL_TEXTURE_GEN_STR_OES 0x8D60
-#endif
-
-#ifndef GL_OES_compressed_paletted_texture
-#define GL_PALETTE4_RGB8_OES 0x8B90
-#define GL_PALETTE4_RGBA8_OES 0x8B91
-#define GL_PALETTE4_R5_G6_B5_OES 0x8B92
-#define GL_PALETTE4_RGBA4_OES 0x8B93
-#define GL_PALETTE4_RGB5_A1_OES 0x8B94
-#define GL_PALETTE8_RGB8_OES 0x8B95
-#define GL_PALETTE8_RGBA8_OES 0x8B96
-#define GL_PALETTE8_R5_G6_B5_OES 0x8B97
-#define GL_PALETTE8_RGBA4_OES 0x8B98
-#define GL_PALETTE8_RGB5_A1_OES 0x8B99
-#endif
-
-#ifndef GL_OES_matrix_get
-#define GL_MODELVIEW_MATRIX_FLOAT_AS_INT_BITS_OES 0x898D
-#define GL_PROJECTION_MATRIX_FLOAT_AS_INT_BITS_OES 0x898E
-#define GL_TEXTURE_MATRIX_FLOAT_AS_INT_BITS_OES 0x898F
-#endif
-
-#ifndef GL_ES_VERSION_2_0
-#define GL_SHADER_BINARY_FORMATS 0x8DF8
-#define GL_NUM_SHADER_BINARY_FORMATS 0x8DF9
-#define GL_SHADER_COMPILER 0x8DFA
-#define GL_MAX_VERTEX_UNIFORM_VECTORS 0x8DFB
-#define GL_MAX_VARYING_VECTORS 0x8DFC
-#define GL_MAX_FRAGMENT_UNIFORM_VECTORS 0x8DFD
-#endif
-
-
-
-/**
- * Internal token to represent a GLSL shader program (a collection of
- * one or more shaders that get linked together). Note that GLSL
- * shaders and shader programs share one name space (one hash table)
- * so we need a value that's different from any of the
- * GL_VERTEX/FRAGMENT/GEOMETRY_PROGRAM tokens.
- */
-#define GL_SHADER_PROGRAM_MESA 0x9999
-
-
-/**
- * Internal token for geometry programs.
- * Use the value for GL_GEOMETRY_PROGRAM_NV for now.
- */
-#define MESA_GEOMETRY_PROGRAM 0x8c26
-
-/* Several fields of struct gl_config can take these as values. Since
- * GLX header files may not be available everywhere they need to be used,
- * redefine them here.
- */
-#define GLX_NONE 0x8000
-#define GLX_SLOW_CONFIG 0x8001
-#define GLX_TRUE_COLOR 0x8002
-#define GLX_DIRECT_COLOR 0x8003
-#define GLX_PSEUDO_COLOR 0x8004
-#define GLX_STATIC_COLOR 0x8005
-#define GLX_GRAY_SCALE 0x8006
-#define GLX_STATIC_GRAY 0x8007
-#define GLX_TRANSPARENT_RGB 0x8008
-#define GLX_TRANSPARENT_INDEX 0x8009
-#define GLX_NON_CONFORMANT_CONFIG 0x800D
-#define GLX_SWAP_EXCHANGE_OML 0x8061
-#define GLX_SWAP_COPY_OML 0x8062
-#define GLX_SWAP_UNDEFINED_OML 0x8063
-
-#define GLX_DONT_CARE 0xFFFFFFFF
-
-#endif /* GLHEADER_H */
+/* + * Mesa 3-D graphics library + * Version: 7.5 + * + * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + + +/** + * \file glheader.h + * Wrapper for GL/gl.h and GL/glext.h + */ + + +#ifndef GLHEADER_H +#define GLHEADER_H + + +#ifdef WGLAPI +#undef WGLAPI +#endif + + +#if !defined(OPENSTEP) && (defined(__WIN32__) && !defined(__CYGWIN__)) && !defined(BUILD_FOR_SNAP) +# if (defined(_MSC_VER) || defined(__MINGW32__)) && defined(BUILD_GL32) /* tag specify we're building mesa as a DLL */ +# define WGLAPI __declspec(dllexport) +# elif (defined(_MSC_VER) || defined(__MINGW32__)) && defined(_DLL) /* tag specifying we're building for DLL runtime support */ +# define WGLAPI __declspec(dllimport) +# else /* for use with static link lib build of Win32 edition only */ +# define WGLAPI __declspec(dllimport) +# endif /* _STATIC_MESA support */ +#endif /* WIN32 / CYGWIN bracket */ + + +#define GL_GLEXT_PROTOTYPES +#include "GL/gl.h" +#include "GL/glext.h" + + +/** + * GL_FIXED is defined in glext.h version 64 but these typedefs aren't (yet). + */ +typedef int GLfixed; +typedef int GLclampx; + + +#ifndef GL_OES_EGL_image +typedef void *GLeglImageOES; +#endif + + +#ifndef GL_OES_point_size_array +#define GL_POINT_SIZE_ARRAY_OES 0x8B9C +#define GL_POINT_SIZE_ARRAY_TYPE_OES 0x898A +#define GL_POINT_SIZE_ARRAY_STRIDE_OES 0x898B +#define GL_POINT_SIZE_ARRAY_POINTER_OES 0x898C +#define GL_POINT_SIZE_ARRAY_BUFFER_BINDING_OES 0x8B9F +#endif + + +#ifndef GL_OES_draw_texture +#define GL_TEXTURE_CROP_RECT_OES 0x8B9D +#endif + + +#ifndef GL_PROGRAM_BINARY_LENGTH_OES +#define GL_PROGRAM_BINARY_LENGTH_OES 0x8741 +#endif + +/* GLES 2.0 tokens */ +#ifndef GL_RGB565 +#define GL_RGB565 0x8D62 +#endif + +#ifndef GL_TEXTURE_GEN_STR_OES +#define GL_TEXTURE_GEN_STR_OES 0x8D60 +#endif + +#ifndef GL_OES_compressed_paletted_texture +#define GL_PALETTE4_RGB8_OES 0x8B90 +#define GL_PALETTE4_RGBA8_OES 0x8B91 +#define GL_PALETTE4_R5_G6_B5_OES 0x8B92 +#define GL_PALETTE4_RGBA4_OES 0x8B93 +#define GL_PALETTE4_RGB5_A1_OES 0x8B94 +#define GL_PALETTE8_RGB8_OES 0x8B95 +#define GL_PALETTE8_RGBA8_OES 0x8B96 +#define GL_PALETTE8_R5_G6_B5_OES 0x8B97 +#define GL_PALETTE8_RGBA4_OES 0x8B98 +#define GL_PALETTE8_RGB5_A1_OES 0x8B99 +#endif + +#ifndef GL_OES_matrix_get +#define GL_MODELVIEW_MATRIX_FLOAT_AS_INT_BITS_OES 0x898D +#define GL_PROJECTION_MATRIX_FLOAT_AS_INT_BITS_OES 0x898E +#define GL_TEXTURE_MATRIX_FLOAT_AS_INT_BITS_OES 0x898F +#endif + +#ifndef GL_ES_VERSION_2_0 +#define GL_SHADER_BINARY_FORMATS 0x8DF8 +#define GL_NUM_SHADER_BINARY_FORMATS 0x8DF9 +#define GL_SHADER_COMPILER 0x8DFA +#define GL_MAX_VERTEX_UNIFORM_VECTORS 0x8DFB +#define GL_MAX_VARYING_VECTORS 0x8DFC +#define GL_MAX_FRAGMENT_UNIFORM_VECTORS 0x8DFD +#endif + +#ifndef GL_ATI_texture_compression_3dc +#define GL_ATI_texture_compression_3dc 1 +#define GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI 0x8837 +#endif + + +/** + * Internal token to represent a GLSL shader program (a collection of + * one or more shaders that get linked together). Note that GLSL + * shaders and shader programs share one name space (one hash table) + * so we need a value that's different from any of the + * GL_VERTEX/FRAGMENT/GEOMETRY_PROGRAM tokens. + */ +#define GL_SHADER_PROGRAM_MESA 0x9999 + + +/** + * Internal token for geometry programs. + * Use the value for GL_GEOMETRY_PROGRAM_NV for now. + */ +#define MESA_GEOMETRY_PROGRAM 0x8c26 + +/* Several fields of struct gl_config can take these as values. Since + * GLX header files may not be available everywhere they need to be used, + * redefine them here. + */ +#define GLX_NONE 0x8000 +#define GLX_SLOW_CONFIG 0x8001 +#define GLX_TRUE_COLOR 0x8002 +#define GLX_DIRECT_COLOR 0x8003 +#define GLX_PSEUDO_COLOR 0x8004 +#define GLX_STATIC_COLOR 0x8005 +#define GLX_GRAY_SCALE 0x8006 +#define GLX_STATIC_GRAY 0x8007 +#define GLX_TRANSPARENT_RGB 0x8008 +#define GLX_TRANSPARENT_INDEX 0x8009 +#define GLX_NON_CONFORMANT_CONFIG 0x800D +#define GLX_SWAP_EXCHANGE_OML 0x8061 +#define GLX_SWAP_COPY_OML 0x8062 +#define GLX_SWAP_UNDEFINED_OML 0x8063 + +#define GLX_DONT_CARE 0xFFFFFFFF + +#endif /* GLHEADER_H */ diff --git a/mesalib/src/mesa/main/image.c b/mesalib/src/mesa/main/image.c index 444f21ed5..bbde3800e 100644 --- a/mesalib/src/mesa/main/image.c +++ b/mesalib/src/mesa/main/image.c @@ -1,1879 +1,1891 @@ -/*
- * Mesa 3-D graphics library
- * Version: 7.5
- *
- * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
- * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-
-/**
- * \file image.c
- * Image handling.
- */
-
-
-#include "glheader.h"
-#include "colormac.h"
-#include "image.h"
-#include "imports.h"
-#include "macros.h"
-#include "mfeatures.h"
-#include "mtypes.h"
-
-
-/**
- * NOTE:
- * Normally, BYTE_TO_FLOAT(0) returns 0.00392 That causes problems when
- * we later convert the float to a packed integer value (such as for
- * GL_RGB5_A1) because we'll wind up with a non-zero value.
- *
- * We redefine the macros here so zero is handled correctly.
- */
-#undef BYTE_TO_FLOAT
-#define BYTE_TO_FLOAT(B) ((B) == 0 ? 0.0F : ((2.0F * (B) + 1.0F) * (1.0F/255.0F)))
-
-#undef SHORT_TO_FLOAT
-#define SHORT_TO_FLOAT(S) ((S) == 0 ? 0.0F : ((2.0F * (S) + 1.0F) * (1.0F/65535.0F)))
-
-
-
-/** Compute ceiling of integer quotient of A divided by B. */
-#define CEILING( A, B ) ( (A) % (B) == 0 ? (A)/(B) : (A)/(B)+1 )
-
-
-/**
- * \return GL_TRUE if type is packed pixel type, GL_FALSE otherwise.
- */
-GLboolean
-_mesa_type_is_packed(GLenum type)
-{
- switch (type) {
- case GL_UNSIGNED_BYTE_3_3_2:
- case GL_UNSIGNED_BYTE_2_3_3_REV:
- case MESA_UNSIGNED_BYTE_4_4:
- case GL_UNSIGNED_SHORT_5_6_5:
- case GL_UNSIGNED_SHORT_5_6_5_REV:
- case GL_UNSIGNED_SHORT_4_4_4_4:
- case GL_UNSIGNED_SHORT_4_4_4_4_REV:
- case GL_UNSIGNED_SHORT_5_5_5_1:
- case GL_UNSIGNED_SHORT_1_5_5_5_REV:
- case GL_UNSIGNED_INT_8_8_8_8:
- case GL_UNSIGNED_INT_8_8_8_8_REV:
- case GL_UNSIGNED_INT_10_10_10_2:
- case GL_UNSIGNED_INT_2_10_10_10_REV:
- case GL_UNSIGNED_SHORT_8_8_MESA:
- case GL_UNSIGNED_SHORT_8_8_REV_MESA:
- case GL_UNSIGNED_INT_24_8_EXT:
- return GL_TRUE;
- }
-
- return GL_FALSE;
-}
-
-
-
-/**
- * Flip the order of the 2 bytes in each word in the given array.
- *
- * \param p array.
- * \param n number of words.
- */
-void
-_mesa_swap2( GLushort *p, GLuint n )
-{
- GLuint i;
- for (i = 0; i < n; i++) {
- p[i] = (p[i] >> 8) | ((p[i] << 8) & 0xff00);
- }
-}
-
-
-
-/*
- * Flip the order of the 4 bytes in each word in the given array.
- */
-void
-_mesa_swap4( GLuint *p, GLuint n )
-{
- GLuint i, a, b;
- for (i = 0; i < n; i++) {
- b = p[i];
- a = (b >> 24)
- | ((b >> 8) & 0xff00)
- | ((b << 8) & 0xff0000)
- | ((b << 24) & 0xff000000);
- p[i] = a;
- }
-}
-
-
-/**
- * Get the size of a GL data type.
- *
- * \param type GL data type.
- *
- * \return the size, in bytes, of the given data type, 0 if a GL_BITMAP, or -1
- * if an invalid type enum.
- */
-GLint
-_mesa_sizeof_type( GLenum type )
-{
- switch (type) {
- case GL_BITMAP:
- return 0;
- case GL_UNSIGNED_BYTE:
- return sizeof(GLubyte);
- case GL_BYTE:
- return sizeof(GLbyte);
- case GL_UNSIGNED_SHORT:
- return sizeof(GLushort);
- case GL_SHORT:
- return sizeof(GLshort);
- case GL_UNSIGNED_INT:
- return sizeof(GLuint);
- case GL_INT:
- return sizeof(GLint);
- case GL_FLOAT:
- return sizeof(GLfloat);
- case GL_DOUBLE:
- return sizeof(GLdouble);
- case GL_HALF_FLOAT_ARB:
- return sizeof(GLhalfARB);
- case GL_FIXED:
- return sizeof(GLfixed);
- default:
- return -1;
- }
-}
-
-
-/**
- * Same as _mesa_sizeof_type() but also accepting the packed pixel
- * format data types.
- */
-GLint
-_mesa_sizeof_packed_type( GLenum type )
-{
- switch (type) {
- case GL_BITMAP:
- return 0;
- case GL_UNSIGNED_BYTE:
- return sizeof(GLubyte);
- case GL_BYTE:
- return sizeof(GLbyte);
- case GL_UNSIGNED_SHORT:
- return sizeof(GLushort);
- case GL_SHORT:
- return sizeof(GLshort);
- case GL_UNSIGNED_INT:
- return sizeof(GLuint);
- case GL_INT:
- return sizeof(GLint);
- case GL_HALF_FLOAT_ARB:
- return sizeof(GLhalfARB);
- case GL_FLOAT:
- return sizeof(GLfloat);
- case GL_UNSIGNED_BYTE_3_3_2:
- return sizeof(GLubyte);
- case GL_UNSIGNED_BYTE_2_3_3_REV:
- return sizeof(GLubyte);
- case MESA_UNSIGNED_BYTE_4_4:
- return sizeof(GLubyte);
- case GL_UNSIGNED_SHORT_5_6_5:
- return sizeof(GLushort);
- case GL_UNSIGNED_SHORT_5_6_5_REV:
- return sizeof(GLushort);
- case GL_UNSIGNED_SHORT_4_4_4_4:
- return sizeof(GLushort);
- case GL_UNSIGNED_SHORT_4_4_4_4_REV:
- return sizeof(GLushort);
- case GL_UNSIGNED_SHORT_5_5_5_1:
- return sizeof(GLushort);
- case GL_UNSIGNED_SHORT_1_5_5_5_REV:
- return sizeof(GLushort);
- case GL_UNSIGNED_INT_8_8_8_8:
- return sizeof(GLuint);
- case GL_UNSIGNED_INT_8_8_8_8_REV:
- return sizeof(GLuint);
- case GL_UNSIGNED_INT_10_10_10_2:
- return sizeof(GLuint);
- case GL_UNSIGNED_INT_2_10_10_10_REV:
- return sizeof(GLuint);
- case GL_UNSIGNED_SHORT_8_8_MESA:
- case GL_UNSIGNED_SHORT_8_8_REV_MESA:
- return sizeof(GLushort);
- case GL_UNSIGNED_INT_24_8_EXT:
- return sizeof(GLuint);
- default:
- return -1;
- }
-}
-
-
-/**
- * Get the number of components in a pixel format.
- *
- * \param format pixel format.
- *
- * \return the number of components in the given format, or -1 if a bad format.
- */
-GLint
-_mesa_components_in_format( GLenum format )
-{
- switch (format) {
- case GL_COLOR_INDEX:
- case GL_COLOR_INDEX1_EXT:
- case GL_COLOR_INDEX2_EXT:
- case GL_COLOR_INDEX4_EXT:
- case GL_COLOR_INDEX8_EXT:
- case GL_COLOR_INDEX12_EXT:
- case GL_COLOR_INDEX16_EXT:
- case GL_STENCIL_INDEX:
- case GL_DEPTH_COMPONENT:
- case GL_RED:
- case GL_RED_INTEGER_EXT:
- case GL_GREEN:
- case GL_GREEN_INTEGER_EXT:
- case GL_BLUE:
- case GL_BLUE_INTEGER_EXT:
- case GL_ALPHA:
- case GL_ALPHA_INTEGER_EXT:
- case GL_LUMINANCE:
- case GL_LUMINANCE_INTEGER_EXT:
- case GL_INTENSITY:
- return 1;
- case GL_LUMINANCE_ALPHA:
- case GL_LUMINANCE_ALPHA_INTEGER_EXT:
- case GL_RG:
- return 2;
- case GL_RGB:
- case GL_RGB_INTEGER_EXT:
- return 3;
- case GL_RGBA:
- case GL_RGBA_INTEGER_EXT:
- return 4;
- case GL_BGR:
- return 3;
- case GL_BGRA:
- return 4;
- case GL_ABGR_EXT:
- return 4;
- case GL_YCBCR_MESA:
- return 2;
- case GL_DEPTH_STENCIL_EXT:
- return 2;
- case GL_DUDV_ATI:
- case GL_DU8DV8_ATI:
- return 2;
- default:
- return -1;
- }
-}
-
-
-/**
- * Get the bytes per pixel of pixel format type pair.
- *
- * \param format pixel format.
- * \param type pixel type.
- *
- * \return bytes per pixel, or -1 if a bad format or type was given.
- */
-GLint
-_mesa_bytes_per_pixel( GLenum format, GLenum type )
-{
- GLint comps = _mesa_components_in_format( format );
- if (comps < 0)
- return -1;
-
- switch (type) {
- case GL_BITMAP:
- return 0; /* special case */
- case GL_BYTE:
- case GL_UNSIGNED_BYTE:
- return comps * sizeof(GLubyte);
- case GL_SHORT:
- case GL_UNSIGNED_SHORT:
- return comps * sizeof(GLshort);
- case GL_INT:
- case GL_UNSIGNED_INT:
- return comps * sizeof(GLint);
- case GL_FLOAT:
- return comps * sizeof(GLfloat);
- case GL_HALF_FLOAT_ARB:
- return comps * sizeof(GLhalfARB);
- case GL_UNSIGNED_BYTE_3_3_2:
- case GL_UNSIGNED_BYTE_2_3_3_REV:
- if (format == GL_RGB || format == GL_BGR ||
- format == GL_RGB_INTEGER_EXT || format == GL_BGR_INTEGER_EXT)
- return sizeof(GLubyte);
- else
- return -1; /* error */
- case GL_UNSIGNED_SHORT_5_6_5:
- case GL_UNSIGNED_SHORT_5_6_5_REV:
- if (format == GL_RGB || format == GL_BGR ||
- format == GL_RGB_INTEGER_EXT || format == GL_BGR_INTEGER_EXT)
- return sizeof(GLushort);
- else
- return -1; /* error */
- case GL_UNSIGNED_SHORT_4_4_4_4:
- case GL_UNSIGNED_SHORT_4_4_4_4_REV:
- case GL_UNSIGNED_SHORT_5_5_5_1:
- case GL_UNSIGNED_SHORT_1_5_5_5_REV:
- if (format == GL_RGBA || format == GL_BGRA || format == GL_ABGR_EXT ||
- format == GL_RGBA_INTEGER_EXT || format == GL_BGRA_INTEGER_EXT)
- return sizeof(GLushort);
- else
- return -1;
- case GL_UNSIGNED_INT_8_8_8_8:
- case GL_UNSIGNED_INT_8_8_8_8_REV:
- case GL_UNSIGNED_INT_10_10_10_2:
- case GL_UNSIGNED_INT_2_10_10_10_REV:
- if (format == GL_RGBA || format == GL_BGRA || format == GL_ABGR_EXT ||
- format == GL_RGBA_INTEGER_EXT || format == GL_BGRA_INTEGER_EXT)
- return sizeof(GLuint);
- else
- return -1;
- case GL_UNSIGNED_SHORT_8_8_MESA:
- case GL_UNSIGNED_SHORT_8_8_REV_MESA:
- if (format == GL_YCBCR_MESA)
- return sizeof(GLushort);
- else
- return -1;
- case GL_UNSIGNED_INT_24_8_EXT:
- if (format == GL_DEPTH_STENCIL_EXT)
- return sizeof(GLuint);
- else
- return -1;
- default:
- return -1;
- }
-}
-
-
-/**
- * Test for a legal pixel format and type.
- *
- * \param format pixel format.
- * \param type pixel type.
- *
- * \return GL_TRUE if the given pixel format and type are legal, or GL_FALSE
- * otherwise.
- */
-GLboolean
-_mesa_is_legal_format_and_type(const struct gl_context *ctx,
- GLenum format, GLenum type)
-{
- switch (format) {
- case GL_COLOR_INDEX:
- case GL_STENCIL_INDEX:
- switch (type) {
- case GL_BITMAP:
- case GL_BYTE:
- case GL_UNSIGNED_BYTE:
- case GL_SHORT:
- case GL_UNSIGNED_SHORT:
- case GL_INT:
- case GL_UNSIGNED_INT:
- case GL_FLOAT:
- return GL_TRUE;
- case GL_HALF_FLOAT_ARB:
- return ctx->Extensions.ARB_half_float_pixel;
- default:
- return GL_FALSE;
- }
- case GL_RED:
- case GL_GREEN:
- case GL_BLUE:
- case GL_ALPHA:
-#if 0 /* not legal! see table 3.6 of the 1.5 spec */
- case GL_INTENSITY:
-#endif
- case GL_LUMINANCE:
- case GL_LUMINANCE_ALPHA:
- case GL_DEPTH_COMPONENT:
- switch (type) {
- case GL_BYTE:
- case GL_UNSIGNED_BYTE:
- case GL_SHORT:
- case GL_UNSIGNED_SHORT:
- case GL_INT:
- case GL_UNSIGNED_INT:
- case GL_FLOAT:
- return GL_TRUE;
- case GL_HALF_FLOAT_ARB:
- return ctx->Extensions.ARB_half_float_pixel;
- default:
- return GL_FALSE;
- }
- case GL_RG:
- if (!ctx->Extensions.ARB_texture_rg)
- return GL_FALSE;
-
- switch (type) {
- case GL_BYTE:
- case GL_UNSIGNED_BYTE:
- case GL_SHORT:
- case GL_UNSIGNED_SHORT:
- case GL_INT:
- case GL_UNSIGNED_INT:
- case GL_FLOAT:
- return GL_TRUE;
- case GL_HALF_FLOAT_ARB:
- return ctx->Extensions.ARB_half_float_pixel;
- default:
- return GL_FALSE;
- }
- case GL_RGB:
- switch (type) {
- case GL_BYTE:
- case GL_UNSIGNED_BYTE:
- case GL_SHORT:
- case GL_UNSIGNED_SHORT:
- case GL_INT:
- case GL_UNSIGNED_INT:
- case GL_FLOAT:
- case GL_UNSIGNED_BYTE_3_3_2:
- case GL_UNSIGNED_BYTE_2_3_3_REV:
- case GL_UNSIGNED_SHORT_5_6_5:
- case GL_UNSIGNED_SHORT_5_6_5_REV:
- return GL_TRUE;
- case GL_HALF_FLOAT_ARB:
- return ctx->Extensions.ARB_half_float_pixel;
- default:
- return GL_FALSE;
- }
- case GL_BGR:
- switch (type) {
- /* NOTE: no packed types are supported with BGR. That's
- * intentional, according to the GL spec.
- */
- case GL_BYTE:
- case GL_UNSIGNED_BYTE:
- case GL_SHORT:
- case GL_UNSIGNED_SHORT:
- case GL_INT:
- case GL_UNSIGNED_INT:
- case GL_FLOAT:
- return GL_TRUE;
- case GL_HALF_FLOAT_ARB:
- return ctx->Extensions.ARB_half_float_pixel;
- default:
- return GL_FALSE;
- }
- case GL_RGBA:
- case GL_BGRA:
- case GL_ABGR_EXT:
- switch (type) {
- case GL_BYTE:
- case GL_UNSIGNED_BYTE:
- case GL_SHORT:
- case GL_UNSIGNED_SHORT:
- case GL_INT:
- case GL_UNSIGNED_INT:
- case GL_FLOAT:
- case GL_UNSIGNED_SHORT_4_4_4_4:
- case GL_UNSIGNED_SHORT_4_4_4_4_REV:
- case GL_UNSIGNED_SHORT_5_5_5_1:
- case GL_UNSIGNED_SHORT_1_5_5_5_REV:
- case GL_UNSIGNED_INT_8_8_8_8:
- case GL_UNSIGNED_INT_8_8_8_8_REV:
- case GL_UNSIGNED_INT_10_10_10_2:
- case GL_UNSIGNED_INT_2_10_10_10_REV:
- return GL_TRUE;
- case GL_HALF_FLOAT_ARB:
- return ctx->Extensions.ARB_half_float_pixel;
- default:
- return GL_FALSE;
- }
- case GL_YCBCR_MESA:
- if (type == GL_UNSIGNED_SHORT_8_8_MESA ||
- type == GL_UNSIGNED_SHORT_8_8_REV_MESA)
- return GL_TRUE;
- else
- return GL_FALSE;
- case GL_DEPTH_STENCIL_EXT:
- if (ctx->Extensions.EXT_packed_depth_stencil
- && type == GL_UNSIGNED_INT_24_8_EXT)
- return GL_TRUE;
- else
- return GL_FALSE;
- case GL_DUDV_ATI:
- case GL_DU8DV8_ATI:
- switch (type) {
- case GL_BYTE:
- case GL_UNSIGNED_BYTE:
- case GL_SHORT:
- case GL_UNSIGNED_SHORT:
- case GL_INT:
- case GL_UNSIGNED_INT:
- case GL_FLOAT:
- return GL_TRUE;
- default:
- return GL_FALSE;
- }
-
- /* integer-valued formats */
- case GL_RED_INTEGER_EXT:
- case GL_GREEN_INTEGER_EXT:
- case GL_BLUE_INTEGER_EXT:
- case GL_ALPHA_INTEGER_EXT:
- switch (type) {
- case GL_BYTE:
- case GL_UNSIGNED_BYTE:
- case GL_SHORT:
- case GL_UNSIGNED_SHORT:
- case GL_INT:
- case GL_UNSIGNED_INT:
- return ctx->Extensions.EXT_texture_integer;
- default:
- return GL_FALSE;
- }
-
- case GL_RGB_INTEGER_EXT:
- switch (type) {
- case GL_BYTE:
- case GL_UNSIGNED_BYTE:
- case GL_SHORT:
- case GL_UNSIGNED_SHORT:
- case GL_INT:
- case GL_UNSIGNED_INT:
- case GL_UNSIGNED_BYTE_3_3_2:
- case GL_UNSIGNED_BYTE_2_3_3_REV:
- case GL_UNSIGNED_SHORT_5_6_5:
- case GL_UNSIGNED_SHORT_5_6_5_REV:
- return ctx->Extensions.EXT_texture_integer;
- default:
- return GL_FALSE;
- }
-
- case GL_BGR_INTEGER_EXT:
- switch (type) {
- case GL_BYTE:
- case GL_UNSIGNED_BYTE:
- case GL_SHORT:
- case GL_UNSIGNED_SHORT:
- case GL_INT:
- case GL_UNSIGNED_INT:
- /* NOTE: no packed formats w/ BGR format */
- return ctx->Extensions.EXT_texture_integer;
- default:
- return GL_FALSE;
- }
-
- case GL_RGBA_INTEGER_EXT:
- case GL_BGRA_INTEGER_EXT:
- switch (type) {
- case GL_BYTE:
- case GL_UNSIGNED_BYTE:
- case GL_SHORT:
- case GL_UNSIGNED_SHORT:
- case GL_INT:
- case GL_UNSIGNED_INT:
- case GL_UNSIGNED_SHORT_4_4_4_4:
- case GL_UNSIGNED_SHORT_4_4_4_4_REV:
- case GL_UNSIGNED_SHORT_5_5_5_1:
- case GL_UNSIGNED_SHORT_1_5_5_5_REV:
- case GL_UNSIGNED_INT_8_8_8_8:
- case GL_UNSIGNED_INT_8_8_8_8_REV:
- case GL_UNSIGNED_INT_10_10_10_2:
- case GL_UNSIGNED_INT_2_10_10_10_REV:
- return ctx->Extensions.EXT_texture_integer;
- default:
- return GL_FALSE;
- }
-
- case GL_LUMINANCE_INTEGER_EXT:
- case GL_LUMINANCE_ALPHA_INTEGER_EXT:
- switch (type) {
- case GL_BYTE:
- case GL_UNSIGNED_BYTE:
- case GL_SHORT:
- case GL_UNSIGNED_SHORT:
- case GL_INT:
- case GL_UNSIGNED_INT:
- return ctx->Extensions.EXT_texture_integer;
- default:
- return GL_FALSE;
- }
-
- default:
- ; /* fall-through */
- }
- return GL_FALSE;
-}
-
-
-/**
- * Test if the given image format is a color/RGBA format (i.e., not color
- * index, depth, stencil, etc).
- * \param format the image format value (may by an internal texture format)
- * \return GL_TRUE if its a color/RGBA format, GL_FALSE otherwise.
- */
-GLboolean
-_mesa_is_color_format(GLenum format)
-{
- switch (format) {
- case GL_RED:
- case GL_GREEN:
- case GL_BLUE:
- case GL_ALPHA:
- case GL_ALPHA4:
- case GL_ALPHA8:
- case GL_ALPHA12:
- case GL_ALPHA16:
- case 1:
- case GL_LUMINANCE:
- case GL_LUMINANCE4:
- case GL_LUMINANCE8:
- case GL_LUMINANCE12:
- case GL_LUMINANCE16:
- case 2:
- case GL_LUMINANCE_ALPHA:
- case GL_LUMINANCE4_ALPHA4:
- case GL_LUMINANCE6_ALPHA2:
- case GL_LUMINANCE8_ALPHA8:
- case GL_LUMINANCE12_ALPHA4:
- case GL_LUMINANCE12_ALPHA12:
- case GL_LUMINANCE16_ALPHA16:
- case GL_INTENSITY:
- case GL_INTENSITY4:
- case GL_INTENSITY8:
- case GL_INTENSITY12:
- case GL_INTENSITY16:
- case GL_R8:
- case GL_R16:
- case GL_RG:
- case GL_RG8:
- case GL_RG16:
- case 3:
- case GL_RGB:
- case GL_BGR:
- case GL_R3_G3_B2:
- case GL_RGB4:
- case GL_RGB5:
- case GL_RGB8:
- case GL_RGB10:
- case GL_RGB12:
- case GL_RGB16:
- case 4:
- case GL_ABGR_EXT:
- case GL_RGBA:
- case GL_BGRA:
- case GL_RGBA2:
- case GL_RGBA4:
- case GL_RGB5_A1:
- case GL_RGBA8:
- case GL_RGB10_A2:
- case GL_RGBA12:
- case GL_RGBA16:
- /* float texture formats */
- case GL_ALPHA16F_ARB:
- case GL_ALPHA32F_ARB:
- case GL_LUMINANCE16F_ARB:
- case GL_LUMINANCE32F_ARB:
- case GL_LUMINANCE_ALPHA16F_ARB:
- case GL_LUMINANCE_ALPHA32F_ARB:
- case GL_INTENSITY16F_ARB:
- case GL_INTENSITY32F_ARB:
- case GL_R16F:
- case GL_R32F:
- case GL_RG16F:
- case GL_RG32F:
- case GL_RGB16F_ARB:
- case GL_RGB32F_ARB:
- case GL_RGBA16F_ARB:
- case GL_RGBA32F_ARB:
- /* compressed formats */
- case GL_COMPRESSED_ALPHA:
- case GL_COMPRESSED_LUMINANCE:
- case GL_COMPRESSED_LUMINANCE_ALPHA:
- case GL_COMPRESSED_INTENSITY:
- case GL_COMPRESSED_RED:
- case GL_COMPRESSED_RG:
- case GL_COMPRESSED_RGB:
- case GL_COMPRESSED_RGBA:
- case GL_RGB_S3TC:
- case GL_RGB4_S3TC:
- case GL_RGBA_S3TC:
- case GL_RGBA4_S3TC:
- case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
- case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
- case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
- case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
- case GL_COMPRESSED_RGB_FXT1_3DFX:
- case GL_COMPRESSED_RGBA_FXT1_3DFX:
-#if FEATURE_EXT_texture_sRGB
- case GL_SRGB_EXT:
- case GL_SRGB8_EXT:
- case GL_SRGB_ALPHA_EXT:
- case GL_SRGB8_ALPHA8_EXT:
- case GL_SLUMINANCE_ALPHA_EXT:
- case GL_SLUMINANCE8_ALPHA8_EXT:
- case GL_SLUMINANCE_EXT:
- case GL_SLUMINANCE8_EXT:
- case GL_COMPRESSED_SRGB_EXT:
- case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
- case GL_COMPRESSED_SRGB_ALPHA_EXT:
- case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
- case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
- case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
- case GL_COMPRESSED_SLUMINANCE_EXT:
- case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT:
-#endif /* FEATURE_EXT_texture_sRGB */
- case GL_COMPRESSED_RED_RGTC1:
- case GL_COMPRESSED_SIGNED_RED_RGTC1:
- case GL_COMPRESSED_RG_RGTC2:
- case GL_COMPRESSED_SIGNED_RG_RGTC2:
- /* signed, normalized texture formats */
- case GL_RGBA_SNORM:
- case GL_RGBA8_SNORM:
- /* generic integer formats */
- case GL_RED_INTEGER_EXT:
- case GL_GREEN_INTEGER_EXT:
- case GL_BLUE_INTEGER_EXT:
- case GL_ALPHA_INTEGER_EXT:
- case GL_RGB_INTEGER_EXT:
- case GL_RGBA_INTEGER_EXT:
- case GL_BGR_INTEGER_EXT:
- case GL_BGRA_INTEGER_EXT:
- case GL_LUMINANCE_INTEGER_EXT:
- case GL_LUMINANCE_ALPHA_INTEGER_EXT:
- /* sized integer formats */
- case GL_RGBA32UI_EXT:
- case GL_RGB32UI_EXT:
- case GL_ALPHA32UI_EXT:
- case GL_INTENSITY32UI_EXT:
- case GL_LUMINANCE32UI_EXT:
- case GL_LUMINANCE_ALPHA32UI_EXT:
- case GL_RGBA16UI_EXT:
- case GL_RGB16UI_EXT:
- case GL_ALPHA16UI_EXT:
- case GL_INTENSITY16UI_EXT:
- case GL_LUMINANCE16UI_EXT:
- case GL_LUMINANCE_ALPHA16UI_EXT:
- case GL_RGBA8UI_EXT:
- case GL_RGB8UI_EXT:
- case GL_ALPHA8UI_EXT:
- case GL_INTENSITY8UI_EXT:
- case GL_LUMINANCE8UI_EXT:
- case GL_LUMINANCE_ALPHA8UI_EXT:
- case GL_RGBA32I_EXT:
- case GL_RGB32I_EXT:
- case GL_ALPHA32I_EXT:
- case GL_INTENSITY32I_EXT:
- case GL_LUMINANCE32I_EXT:
- case GL_LUMINANCE_ALPHA32I_EXT:
- case GL_RGBA16I_EXT:
- case GL_RGB16I_EXT:
- case GL_ALPHA16I_EXT:
- case GL_INTENSITY16I_EXT:
- case GL_LUMINANCE16I_EXT:
- case GL_LUMINANCE_ALPHA16I_EXT:
- case GL_RGBA8I_EXT:
- case GL_RGB8I_EXT:
- case GL_ALPHA8I_EXT:
- case GL_INTENSITY8I_EXT:
- case GL_LUMINANCE8I_EXT:
- case GL_LUMINANCE_ALPHA8I_EXT:
- return GL_TRUE;
- case GL_YCBCR_MESA: /* not considered to be RGB */
- /* fall-through */
- default:
- return GL_FALSE;
- }
-}
-
-
-/**
- * Test if the given image format is a color index format.
- */
-GLboolean
-_mesa_is_index_format(GLenum format)
-{
- switch (format) {
- case GL_COLOR_INDEX:
- case GL_COLOR_INDEX1_EXT:
- case GL_COLOR_INDEX2_EXT:
- case GL_COLOR_INDEX4_EXT:
- case GL_COLOR_INDEX8_EXT:
- case GL_COLOR_INDEX12_EXT:
- case GL_COLOR_INDEX16_EXT:
- return GL_TRUE;
- default:
- return GL_FALSE;
- }
-}
-
-
-/**
- * Test if the given image format is a depth component format.
- */
-GLboolean
-_mesa_is_depth_format(GLenum format)
-{
- switch (format) {
- case GL_DEPTH_COMPONENT:
- case GL_DEPTH_COMPONENT16:
- case GL_DEPTH_COMPONENT24:
- case GL_DEPTH_COMPONENT32:
- return GL_TRUE;
- default:
- return GL_FALSE;
- }
-}
-
-
-/**
- * Test if the given image format is a stencil format.
- */
-GLboolean
-_mesa_is_stencil_format(GLenum format)
-{
- switch (format) {
- case GL_STENCIL_INDEX:
- case GL_DEPTH_STENCIL:
- return GL_TRUE;
- default:
- return GL_FALSE;
- }
-}
-
-
-/**
- * Test if the given image format is a YCbCr format.
- */
-GLboolean
-_mesa_is_ycbcr_format(GLenum format)
-{
- switch (format) {
- case GL_YCBCR_MESA:
- return GL_TRUE;
- default:
- return GL_FALSE;
- }
-}
-
-
-/**
- * Test if the given image format is a depth+stencil format.
- */
-GLboolean
-_mesa_is_depthstencil_format(GLenum format)
-{
- switch (format) {
- case GL_DEPTH24_STENCIL8_EXT:
- case GL_DEPTH_STENCIL_EXT:
- return GL_TRUE;
- default:
- return GL_FALSE;
- }
-}
-
-
-/**
- * Test if the given image format is a depth or stencil format.
- */
-GLboolean
-_mesa_is_depth_or_stencil_format(GLenum format)
-{
- switch (format) {
- case GL_DEPTH_COMPONENT:
- case GL_DEPTH_COMPONENT16:
- case GL_DEPTH_COMPONENT24:
- case GL_DEPTH_COMPONENT32:
- case GL_STENCIL_INDEX:
- case GL_STENCIL_INDEX1_EXT:
- case GL_STENCIL_INDEX4_EXT:
- case GL_STENCIL_INDEX8_EXT:
- case GL_STENCIL_INDEX16_EXT:
- case GL_DEPTH_STENCIL_EXT:
- case GL_DEPTH24_STENCIL8_EXT:
- return GL_TRUE;
- default:
- return GL_FALSE;
- }
-}
-
-
-/**
- * Test if the given image format is a dudv format.
- */
-GLboolean
-_mesa_is_dudv_format(GLenum format)
-{
- switch (format) {
- case GL_DUDV_ATI:
- case GL_DU8DV8_ATI:
- return GL_TRUE;
- default:
- return GL_FALSE;
- }
-}
-
-
-/**
- * Test if the given format is an integer (non-normalized) format.
- */
-GLboolean
-_mesa_is_integer_format(GLenum format)
-{
- switch (format) {
- /* generic integer formats */
- case GL_RED_INTEGER_EXT:
- case GL_GREEN_INTEGER_EXT:
- case GL_BLUE_INTEGER_EXT:
- case GL_ALPHA_INTEGER_EXT:
- case GL_RGB_INTEGER_EXT:
- case GL_RGBA_INTEGER_EXT:
- case GL_BGR_INTEGER_EXT:
- case GL_BGRA_INTEGER_EXT:
- case GL_LUMINANCE_INTEGER_EXT:
- case GL_LUMINANCE_ALPHA_INTEGER_EXT:
- /* specific integer formats */
- case GL_RGBA32UI_EXT:
- case GL_RGB32UI_EXT:
- case GL_ALPHA32UI_EXT:
- case GL_INTENSITY32UI_EXT:
- case GL_LUMINANCE32UI_EXT:
- case GL_LUMINANCE_ALPHA32UI_EXT:
- case GL_RGBA16UI_EXT:
- case GL_RGB16UI_EXT:
- case GL_ALPHA16UI_EXT:
- case GL_INTENSITY16UI_EXT:
- case GL_LUMINANCE16UI_EXT:
- case GL_LUMINANCE_ALPHA16UI_EXT:
- case GL_RGBA8UI_EXT:
- case GL_RGB8UI_EXT:
- case GL_ALPHA8UI_EXT:
- case GL_INTENSITY8UI_EXT:
- case GL_LUMINANCE8UI_EXT:
- case GL_LUMINANCE_ALPHA8UI_EXT:
- case GL_RGBA32I_EXT:
- case GL_RGB32I_EXT:
- case GL_ALPHA32I_EXT:
- case GL_INTENSITY32I_EXT:
- case GL_LUMINANCE32I_EXT:
- case GL_LUMINANCE_ALPHA32I_EXT:
- case GL_RGBA16I_EXT:
- case GL_RGB16I_EXT:
- case GL_ALPHA16I_EXT:
- case GL_INTENSITY16I_EXT:
- case GL_LUMINANCE16I_EXT:
- case GL_LUMINANCE_ALPHA16I_EXT:
- case GL_RGBA8I_EXT:
- case GL_RGB8I_EXT:
- case GL_ALPHA8I_EXT:
- case GL_INTENSITY8I_EXT:
- case GL_LUMINANCE8I_EXT:
- case GL_LUMINANCE_ALPHA8I_EXT:
- return GL_TRUE;
- default:
- return GL_FALSE;
- }
-}
-
-
-/**
- * Test if an image format is a supported compressed format.
- * \param format the internal format token provided by the user.
- * \return GL_TRUE if compressed, GL_FALSE if uncompressed
- */
-GLboolean
-_mesa_is_compressed_format(struct gl_context *ctx, GLenum format)
-{
- switch (format) {
- case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
- case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
- case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
- case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
- return ctx->Extensions.EXT_texture_compression_s3tc;
- case GL_RGB_S3TC:
- case GL_RGB4_S3TC:
- case GL_RGBA_S3TC:
- case GL_RGBA4_S3TC:
- return ctx->Extensions.S3_s3tc;
- case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
- case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
- case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
- case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
- return ctx->Extensions.EXT_texture_sRGB
- && ctx->Extensions.EXT_texture_compression_s3tc;
- case GL_COMPRESSED_RGB_FXT1_3DFX:
- case GL_COMPRESSED_RGBA_FXT1_3DFX:
- return ctx->Extensions.TDFX_texture_compression_FXT1;
- case GL_COMPRESSED_RED_RGTC1:
- case GL_COMPRESSED_SIGNED_RED_RGTC1:
- case GL_COMPRESSED_RG_RGTC2:
- case GL_COMPRESSED_SIGNED_RG_RGTC2:
- return ctx->Extensions.ARB_texture_compression_rgtc;
- default:
- return GL_FALSE;
- }
-}
-
-
-/**
- * Return the address of a specific pixel in an image (1D, 2D or 3D).
- *
- * Pixel unpacking/packing parameters are observed according to \p packing.
- *
- * \param dimensions either 1, 2 or 3 to indicate dimensionality of image
- * \param image starting address of image data
- * \param width the image width
- * \param height theimage height
- * \param format the pixel format
- * \param type the pixel data type
- * \param packing the pixelstore attributes
- * \param img which image in the volume (0 for 1D or 2D images)
- * \param row row of pixel in the image (0 for 1D images)
- * \param column column of pixel in the image
- *
- * \return address of pixel on success, or NULL on error.
- *
- * \sa gl_pixelstore_attrib.
- */
-GLvoid *
-_mesa_image_address( GLuint dimensions,
- const struct gl_pixelstore_attrib *packing,
- const GLvoid *image,
- GLsizei width, GLsizei height,
- GLenum format, GLenum type,
- GLint img, GLint row, GLint column )
-{
- GLint alignment; /* 1, 2 or 4 */
- GLint pixels_per_row;
- GLint rows_per_image;
- GLint skiprows;
- GLint skippixels;
- GLint skipimages; /* for 3-D volume images */
- GLubyte *pixel_addr;
-
- ASSERT(dimensions >= 1 && dimensions <= 3);
-
- alignment = packing->Alignment;
- if (packing->RowLength > 0) {
- pixels_per_row = packing->RowLength;
- }
- else {
- pixels_per_row = width;
- }
- if (packing->ImageHeight > 0) {
- rows_per_image = packing->ImageHeight;
- }
- else {
- rows_per_image = height;
- }
-
- skippixels = packing->SkipPixels;
- /* Note: SKIP_ROWS _is_ used for 1D images */
- skiprows = packing->SkipRows;
- /* Note: SKIP_IMAGES is only used for 3D images */
- skipimages = (dimensions == 3) ? packing->SkipImages : 0;
-
- if (type == GL_BITMAP) {
- /* BITMAP data */
- GLint comp_per_pixel; /* components per pixel */
- GLint bytes_per_comp; /* bytes per component */
- GLint bytes_per_row;
- GLint bytes_per_image;
-
- /* Compute bytes per component */
- bytes_per_comp = _mesa_sizeof_packed_type( type );
- if (bytes_per_comp < 0) {
- return NULL;
- }
-
- /* Compute number of components per pixel */
- comp_per_pixel = _mesa_components_in_format( format );
- if (comp_per_pixel < 0) {
- return NULL;
- }
-
- bytes_per_row = alignment
- * CEILING( comp_per_pixel*pixels_per_row, 8*alignment );
-
- bytes_per_image = bytes_per_row * rows_per_image;
-
- pixel_addr = (GLubyte *) image
- + (skipimages + img) * bytes_per_image
- + (skiprows + row) * bytes_per_row
- + (skippixels + column) / 8;
- }
- else {
- /* Non-BITMAP data */
- GLint bytes_per_pixel, bytes_per_row, remainder, bytes_per_image;
- GLint topOfImage;
-
- bytes_per_pixel = _mesa_bytes_per_pixel( format, type );
-
- /* The pixel type and format should have been error checked earlier */
- assert(bytes_per_pixel > 0);
-
- bytes_per_row = pixels_per_row * bytes_per_pixel;
- remainder = bytes_per_row % alignment;
- if (remainder > 0)
- bytes_per_row += (alignment - remainder);
-
- ASSERT(bytes_per_row % alignment == 0);
-
- bytes_per_image = bytes_per_row * rows_per_image;
-
- if (packing->Invert) {
- /* set pixel_addr to the last row */
- topOfImage = bytes_per_row * (height - 1);
- bytes_per_row = -bytes_per_row;
- }
- else {
- topOfImage = 0;
- }
-
- /* compute final pixel address */
- pixel_addr = (GLubyte *) image
- + (skipimages + img) * bytes_per_image
- + topOfImage
- + (skiprows + row) * bytes_per_row
- + (skippixels + column) * bytes_per_pixel;
- }
-
- return (GLvoid *) pixel_addr;
-}
-
-
-GLvoid *
-_mesa_image_address1d( const struct gl_pixelstore_attrib *packing,
- const GLvoid *image,
- GLsizei width,
- GLenum format, GLenum type,
- GLint column )
-{
- return _mesa_image_address(1, packing, image, width, 1,
- format, type, 0, 0, column);
-}
-
-
-GLvoid *
-_mesa_image_address2d( const struct gl_pixelstore_attrib *packing,
- const GLvoid *image,
- GLsizei width, GLsizei height,
- GLenum format, GLenum type,
- GLint row, GLint column )
-{
- return _mesa_image_address(2, packing, image, width, height,
- format, type, 0, row, column);
-}
-
-
-GLvoid *
-_mesa_image_address3d( const struct gl_pixelstore_attrib *packing,
- const GLvoid *image,
- GLsizei width, GLsizei height,
- GLenum format, GLenum type,
- GLint img, GLint row, GLint column )
-{
- return _mesa_image_address(3, packing, image, width, height,
- format, type, img, row, column);
-}
-
-
-
-/**
- * Compute the stride (in bytes) between image rows.
- *
- * \param packing the pixelstore attributes
- * \param width image width.
- * \param format pixel format.
- * \param type pixel data type.
- *
- * \return the stride in bytes for the given parameters, or -1 if error
- */
-GLint
-_mesa_image_row_stride( const struct gl_pixelstore_attrib *packing,
- GLint width, GLenum format, GLenum type )
-{
- GLint bytesPerRow, remainder;
-
- ASSERT(packing);
-
- if (type == GL_BITMAP) {
- if (packing->RowLength == 0) {
- bytesPerRow = (width + 7) / 8;
- }
- else {
- bytesPerRow = (packing->RowLength + 7) / 8;
- }
- }
- else {
- /* Non-BITMAP data */
- const GLint bytesPerPixel = _mesa_bytes_per_pixel(format, type);
- if (bytesPerPixel <= 0)
- return -1; /* error */
- if (packing->RowLength == 0) {
- bytesPerRow = bytesPerPixel * width;
- }
- else {
- bytesPerRow = bytesPerPixel * packing->RowLength;
- }
- }
-
- remainder = bytesPerRow % packing->Alignment;
- if (remainder > 0) {
- bytesPerRow += (packing->Alignment - remainder);
- }
-
- if (packing->Invert) {
- /* negate the bytes per row (negative row stride) */
- bytesPerRow = -bytesPerRow;
- }
-
- return bytesPerRow;
-}
-
-
-/*
- * Compute the stride between images in a 3D texture (in bytes) for the given
- * pixel packing parameters and image width, format and type.
- */
-GLint
-_mesa_image_image_stride( const struct gl_pixelstore_attrib *packing,
- GLint width, GLint height,
- GLenum format, GLenum type )
-{
- GLint bytesPerRow, bytesPerImage, remainder;
-
- ASSERT(packing);
-
- if (type == GL_BITMAP) {
- if (packing->RowLength == 0) {
- bytesPerRow = (width + 7) / 8;
- }
- else {
- bytesPerRow = (packing->RowLength + 7) / 8;
- }
- }
- else {
- const GLint bytesPerPixel = _mesa_bytes_per_pixel(format, type);
-
- if (bytesPerPixel <= 0)
- return -1; /* error */
- if (packing->RowLength == 0) {
- bytesPerRow = bytesPerPixel * width;
- }
- else {
- bytesPerRow = bytesPerPixel * packing->RowLength;
- }
- }
-
- remainder = bytesPerRow % packing->Alignment;
- if (remainder > 0)
- bytesPerRow += (packing->Alignment - remainder);
-
- if (packing->ImageHeight == 0)
- bytesPerImage = bytesPerRow * height;
- else
- bytesPerImage = bytesPerRow * packing->ImageHeight;
-
- return bytesPerImage;
-}
-
-
-
-/**
- * "Expand" a bitmap from 1-bit per pixel to 8-bits per pixel.
- * This is typically used to convert a bitmap into a GLubyte/pixel texture.
- * "On" bits will set texels to \p onValue.
- * "Off" bits will not modify texels.
- * \param width src bitmap width in pixels
- * \param height src bitmap height in pixels
- * \param unpack bitmap unpacking state
- * \param bitmap the src bitmap data
- * \param destBuffer start of dest buffer
- * \param destStride row stride in dest buffer
- * \param onValue if bit is 1, set destBuffer pixel to this value
- */
-void
-_mesa_expand_bitmap(GLsizei width, GLsizei height,
- const struct gl_pixelstore_attrib *unpack,
- const GLubyte *bitmap,
- GLubyte *destBuffer, GLint destStride,
- GLubyte onValue)
-{
- const GLubyte *srcRow = (const GLubyte *)
- _mesa_image_address2d(unpack, bitmap, width, height,
- GL_COLOR_INDEX, GL_BITMAP, 0, 0);
- const GLint srcStride = _mesa_image_row_stride(unpack, width,
- GL_COLOR_INDEX, GL_BITMAP);
- GLint row, col;
-
-#define SET_PIXEL(COL, ROW) \
- destBuffer[(ROW) * destStride + (COL)] = onValue;
-
- for (row = 0; row < height; row++) {
- const GLubyte *src = srcRow;
-
- if (unpack->LsbFirst) {
- /* Lsb first */
- GLubyte mask = 1U << (unpack->SkipPixels & 0x7);
- for (col = 0; col < width; col++) {
-
- if (*src & mask) {
- SET_PIXEL(col, row);
- }
-
- if (mask == 128U) {
- src++;
- mask = 1U;
- }
- else {
- mask = mask << 1;
- }
- }
-
- /* get ready for next row */
- if (mask != 1)
- src++;
- }
- else {
- /* Msb first */
- GLubyte mask = 128U >> (unpack->SkipPixels & 0x7);
- for (col = 0; col < width; col++) {
-
- if (*src & mask) {
- SET_PIXEL(col, row);
- }
-
- if (mask == 1U) {
- src++;
- mask = 128U;
- }
- else {
- mask = mask >> 1;
- }
- }
-
- /* get ready for next row */
- if (mask != 128)
- src++;
- }
-
- srcRow += srcStride;
- } /* row */
-
-#undef SET_PIXEL
-}
-
-
-
-
-/**
- * Convert an array of RGBA colors from one datatype to another.
- * NOTE: src may equal dst. In that case, we use a temporary buffer.
- */
-void
-_mesa_convert_colors(GLenum srcType, const GLvoid *src,
- GLenum dstType, GLvoid *dst,
- GLuint count, const GLubyte mask[])
-{
- GLuint tempBuffer[MAX_WIDTH][4];
- const GLboolean useTemp = (src == dst);
-
- ASSERT(srcType != dstType);
-
- switch (srcType) {
- case GL_UNSIGNED_BYTE:
- if (dstType == GL_UNSIGNED_SHORT) {
- const GLubyte (*src1)[4] = (const GLubyte (*)[4]) src;
- GLushort (*dst2)[4] = (GLushort (*)[4]) (useTemp ? tempBuffer : dst);
- GLuint i;
- for (i = 0; i < count; i++) {
- if (!mask || mask[i]) {
- dst2[i][RCOMP] = UBYTE_TO_USHORT(src1[i][RCOMP]);
- dst2[i][GCOMP] = UBYTE_TO_USHORT(src1[i][GCOMP]);
- dst2[i][BCOMP] = UBYTE_TO_USHORT(src1[i][BCOMP]);
- dst2[i][ACOMP] = UBYTE_TO_USHORT(src1[i][ACOMP]);
- }
- }
- if (useTemp)
- memcpy(dst, tempBuffer, count * 4 * sizeof(GLushort));
- }
- else {
- const GLubyte (*src1)[4] = (const GLubyte (*)[4]) src;
- GLfloat (*dst4)[4] = (GLfloat (*)[4]) (useTemp ? tempBuffer : dst);
- GLuint i;
- ASSERT(dstType == GL_FLOAT);
- for (i = 0; i < count; i++) {
- if (!mask || mask[i]) {
- dst4[i][RCOMP] = UBYTE_TO_FLOAT(src1[i][RCOMP]);
- dst4[i][GCOMP] = UBYTE_TO_FLOAT(src1[i][GCOMP]);
- dst4[i][BCOMP] = UBYTE_TO_FLOAT(src1[i][BCOMP]);
- dst4[i][ACOMP] = UBYTE_TO_FLOAT(src1[i][ACOMP]);
- }
- }
- if (useTemp)
- memcpy(dst, tempBuffer, count * 4 * sizeof(GLfloat));
- }
- break;
- case GL_UNSIGNED_SHORT:
- if (dstType == GL_UNSIGNED_BYTE) {
- const GLushort (*src2)[4] = (const GLushort (*)[4]) src;
- GLubyte (*dst1)[4] = (GLubyte (*)[4]) (useTemp ? tempBuffer : dst);
- GLuint i;
- for (i = 0; i < count; i++) {
- if (!mask || mask[i]) {
- dst1[i][RCOMP] = USHORT_TO_UBYTE(src2[i][RCOMP]);
- dst1[i][GCOMP] = USHORT_TO_UBYTE(src2[i][GCOMP]);
- dst1[i][BCOMP] = USHORT_TO_UBYTE(src2[i][BCOMP]);
- dst1[i][ACOMP] = USHORT_TO_UBYTE(src2[i][ACOMP]);
- }
- }
- if (useTemp)
- memcpy(dst, tempBuffer, count * 4 * sizeof(GLubyte));
- }
- else {
- const GLushort (*src2)[4] = (const GLushort (*)[4]) src;
- GLfloat (*dst4)[4] = (GLfloat (*)[4]) (useTemp ? tempBuffer : dst);
- GLuint i;
- ASSERT(dstType == GL_FLOAT);
- for (i = 0; i < count; i++) {
- if (!mask || mask[i]) {
- dst4[i][RCOMP] = USHORT_TO_FLOAT(src2[i][RCOMP]);
- dst4[i][GCOMP] = USHORT_TO_FLOAT(src2[i][GCOMP]);
- dst4[i][BCOMP] = USHORT_TO_FLOAT(src2[i][BCOMP]);
- dst4[i][ACOMP] = USHORT_TO_FLOAT(src2[i][ACOMP]);
- }
- }
- if (useTemp)
- memcpy(dst, tempBuffer, count * 4 * sizeof(GLfloat));
- }
- break;
- case GL_FLOAT:
- if (dstType == GL_UNSIGNED_BYTE) {
- const GLfloat (*src4)[4] = (const GLfloat (*)[4]) src;
- GLubyte (*dst1)[4] = (GLubyte (*)[4]) (useTemp ? tempBuffer : dst);
- GLuint i;
- for (i = 0; i < count; i++) {
- if (!mask || mask[i]) {
- UNCLAMPED_FLOAT_TO_UBYTE(dst1[i][RCOMP], src4[i][RCOMP]);
- UNCLAMPED_FLOAT_TO_UBYTE(dst1[i][GCOMP], src4[i][GCOMP]);
- UNCLAMPED_FLOAT_TO_UBYTE(dst1[i][BCOMP], src4[i][BCOMP]);
- UNCLAMPED_FLOAT_TO_UBYTE(dst1[i][ACOMP], src4[i][ACOMP]);
- }
- }
- if (useTemp)
- memcpy(dst, tempBuffer, count * 4 * sizeof(GLubyte));
- }
- else {
- const GLfloat (*src4)[4] = (const GLfloat (*)[4]) src;
- GLushort (*dst2)[4] = (GLushort (*)[4]) (useTemp ? tempBuffer : dst);
- GLuint i;
- ASSERT(dstType == GL_UNSIGNED_SHORT);
- for (i = 0; i < count; i++) {
- if (!mask || mask[i]) {
- UNCLAMPED_FLOAT_TO_USHORT(dst2[i][RCOMP], src4[i][RCOMP]);
- UNCLAMPED_FLOAT_TO_USHORT(dst2[i][GCOMP], src4[i][GCOMP]);
- UNCLAMPED_FLOAT_TO_USHORT(dst2[i][BCOMP], src4[i][BCOMP]);
- UNCLAMPED_FLOAT_TO_USHORT(dst2[i][ACOMP], src4[i][ACOMP]);
- }
- }
- if (useTemp)
- memcpy(dst, tempBuffer, count * 4 * sizeof(GLushort));
- }
- break;
- default:
- _mesa_problem(NULL, "Invalid datatype in _mesa_convert_colors");
- }
-}
-
-
-
-
-/**
- * Perform basic clipping for glDrawPixels. The image's position and size
- * and the unpack SkipPixels and SkipRows are adjusted so that the image
- * region is entirely within the window and scissor bounds.
- * NOTE: this will only work when glPixelZoom is (1, 1) or (1, -1).
- * If Pixel.ZoomY is -1, *destY will be changed to be the first row which
- * we'll actually write. Beforehand, *destY-1 is the first drawing row.
- *
- * \return GL_TRUE if image is ready for drawing or
- * GL_FALSE if image was completely clipped away (draw nothing)
- */
-GLboolean
-_mesa_clip_drawpixels(const struct gl_context *ctx,
- GLint *destX, GLint *destY,
- GLsizei *width, GLsizei *height,
- struct gl_pixelstore_attrib *unpack)
-{
- const struct gl_framebuffer *buffer = ctx->DrawBuffer;
-
- if (unpack->RowLength == 0) {
- unpack->RowLength = *width;
- }
-
- ASSERT(ctx->Pixel.ZoomX == 1.0F);
- ASSERT(ctx->Pixel.ZoomY == 1.0F || ctx->Pixel.ZoomY == -1.0F);
-
- /* left clipping */
- if (*destX < buffer->_Xmin) {
- unpack->SkipPixels += (buffer->_Xmin - *destX);
- *width -= (buffer->_Xmin - *destX);
- *destX = buffer->_Xmin;
- }
- /* right clipping */
- if (*destX + *width > buffer->_Xmax)
- *width -= (*destX + *width - buffer->_Xmax);
-
- if (*width <= 0)
- return GL_FALSE;
-
- if (ctx->Pixel.ZoomY == 1.0F) {
- /* bottom clipping */
- if (*destY < buffer->_Ymin) {
- unpack->SkipRows += (buffer->_Ymin - *destY);
- *height -= (buffer->_Ymin - *destY);
- *destY = buffer->_Ymin;
- }
- /* top clipping */
- if (*destY + *height > buffer->_Ymax)
- *height -= (*destY + *height - buffer->_Ymax);
- }
- else { /* upside down */
- /* top clipping */
- if (*destY > buffer->_Ymax) {
- unpack->SkipRows += (*destY - buffer->_Ymax);
- *height -= (*destY - buffer->_Ymax);
- *destY = buffer->_Ymax;
- }
- /* bottom clipping */
- if (*destY - *height < buffer->_Ymin)
- *height -= (buffer->_Ymin - (*destY - *height));
- /* adjust destY so it's the first row to write to */
- (*destY)--;
- }
-
- if (*height <= 0)
- return GL_FALSE;
-
- return GL_TRUE;
-}
-
-
-/**
- * Perform clipping for glReadPixels. The image's window position
- * and size, and the pack skipPixels, skipRows and rowLength are adjusted
- * so that the image region is entirely within the window bounds.
- * Note: this is different from _mesa_clip_drawpixels() in that the
- * scissor box is ignored, and we use the bounds of the current readbuffer
- * surface.
- *
- * \return GL_TRUE if region to read is in bounds
- * GL_FALSE if region is completely out of bounds (nothing to read)
- */
-GLboolean
-_mesa_clip_readpixels(const struct gl_context *ctx,
- GLint *srcX, GLint *srcY,
- GLsizei *width, GLsizei *height,
- struct gl_pixelstore_attrib *pack)
-{
- const struct gl_framebuffer *buffer = ctx->ReadBuffer;
-
- if (pack->RowLength == 0) {
- pack->RowLength = *width;
- }
-
- /* left clipping */
- if (*srcX < 0) {
- pack->SkipPixels += (0 - *srcX);
- *width -= (0 - *srcX);
- *srcX = 0;
- }
- /* right clipping */
- if (*srcX + *width > (GLsizei) buffer->Width)
- *width -= (*srcX + *width - buffer->Width);
-
- if (*width <= 0)
- return GL_FALSE;
-
- /* bottom clipping */
- if (*srcY < 0) {
- pack->SkipRows += (0 - *srcY);
- *height -= (0 - *srcY);
- *srcY = 0;
- }
- /* top clipping */
- if (*srcY + *height > (GLsizei) buffer->Height)
- *height -= (*srcY + *height - buffer->Height);
-
- if (*height <= 0)
- return GL_FALSE;
-
- return GL_TRUE;
-}
-
-
-/**
- * Do clipping for a glCopyTexSubImage call.
- * The framebuffer source region might extend outside the framebuffer
- * bounds. Clip the source region against the framebuffer bounds and
- * adjust the texture/dest position and size accordingly.
- *
- * \return GL_FALSE if region is totally clipped, GL_TRUE otherwise.
- */
-GLboolean
-_mesa_clip_copytexsubimage(const struct gl_context *ctx,
- GLint *destX, GLint *destY,
- GLint *srcX, GLint *srcY,
- GLsizei *width, GLsizei *height)
-{
- const struct gl_framebuffer *fb = ctx->ReadBuffer;
- const GLint srcX0 = *srcX, srcY0 = *srcY;
-
- if (_mesa_clip_to_region(0, 0, fb->Width, fb->Height,
- srcX, srcY, width, height)) {
- *destX = *destX + *srcX - srcX0;
- *destY = *destY + *srcY - srcY0;
-
- return GL_TRUE;
- }
- else {
- return GL_FALSE;
- }
-}
-
-
-
-/**
- * Clip the rectangle defined by (x, y, width, height) against the bounds
- * specified by [xmin, xmax) and [ymin, ymax).
- * \return GL_FALSE if rect is totally clipped, GL_TRUE otherwise.
- */
-GLboolean
-_mesa_clip_to_region(GLint xmin, GLint ymin,
- GLint xmax, GLint ymax,
- GLint *x, GLint *y,
- GLsizei *width, GLsizei *height )
-{
- /* left clipping */
- if (*x < xmin) {
- *width -= (xmin - *x);
- *x = xmin;
- }
-
- /* right clipping */
- if (*x + *width > xmax)
- *width -= (*x + *width - xmax);
-
- if (*width <= 0)
- return GL_FALSE;
-
- /* bottom (or top) clipping */
- if (*y < ymin) {
- *height -= (ymin - *y);
- *y = ymin;
- }
-
- /* top (or bottom) clipping */
- if (*y + *height > ymax)
- *height -= (*y + *height - ymax);
-
- if (*height <= 0)
- return GL_FALSE;
-
- return GL_TRUE;
-}
-
-
-/**
- * Clip dst coords against Xmax (or Ymax).
- */
-static INLINE void
-clip_right_or_top(GLint *srcX0, GLint *srcX1,
- GLint *dstX0, GLint *dstX1,
- GLint maxValue)
-{
- GLfloat t, bias;
-
- if (*dstX1 > maxValue) {
- /* X1 outside right edge */
- ASSERT(*dstX0 < maxValue); /* X0 should be inside right edge */
- t = (GLfloat) (maxValue - *dstX0) / (GLfloat) (*dstX1 - *dstX0);
- /* chop off [t, 1] part */
- ASSERT(t >= 0.0 && t <= 1.0);
- *dstX1 = maxValue;
- bias = (*srcX0 < *srcX1) ? 0.5F : -0.5F;
- *srcX1 = *srcX0 + (GLint) (t * (*srcX1 - *srcX0) + bias);
- }
- else if (*dstX0 > maxValue) {
- /* X0 outside right edge */
- ASSERT(*dstX1 < maxValue); /* X1 should be inside right edge */
- t = (GLfloat) (maxValue - *dstX1) / (GLfloat) (*dstX0 - *dstX1);
- /* chop off [t, 1] part */
- ASSERT(t >= 0.0 && t <= 1.0);
- *dstX0 = maxValue;
- bias = (*srcX0 < *srcX1) ? -0.5F : 0.5F;
- *srcX0 = *srcX1 + (GLint) (t * (*srcX0 - *srcX1) + bias);
- }
-}
-
-
-/**
- * Clip dst coords against Xmin (or Ymin).
- */
-static INLINE void
-clip_left_or_bottom(GLint *srcX0, GLint *srcX1,
- GLint *dstX0, GLint *dstX1,
- GLint minValue)
-{
- GLfloat t, bias;
-
- if (*dstX0 < minValue) {
- /* X0 outside left edge */
- ASSERT(*dstX1 > minValue); /* X1 should be inside left edge */
- t = (GLfloat) (minValue - *dstX0) / (GLfloat) (*dstX1 - *dstX0);
- /* chop off [0, t] part */
- ASSERT(t >= 0.0 && t <= 1.0);
- *dstX0 = minValue;
- bias = (*srcX0 < *srcX1) ? 0.5F : -0.5F; /* flipped??? */
- *srcX0 = *srcX0 + (GLint) (t * (*srcX1 - *srcX0) + bias);
- }
- else if (*dstX1 < minValue) {
- /* X1 outside left edge */
- ASSERT(*dstX0 > minValue); /* X0 should be inside left edge */
- t = (GLfloat) (minValue - *dstX1) / (GLfloat) (*dstX0 - *dstX1);
- /* chop off [0, t] part */
- ASSERT(t >= 0.0 && t <= 1.0);
- *dstX1 = minValue;
- bias = (*srcX0 < *srcX1) ? 0.5F : -0.5F;
- *srcX1 = *srcX1 + (GLint) (t * (*srcX0 - *srcX1) + bias);
- }
-}
-
-
-/**
- * Do clipping of blit src/dest rectangles.
- * The dest rect is clipped against both the buffer bounds and scissor bounds.
- * The src rect is just clipped against the buffer bounds.
- *
- * When either the src or dest rect is clipped, the other is also clipped
- * proportionately!
- *
- * Note that X0 need not be less than X1 (same for Y) for either the source
- * and dest rects. That makes the clipping a little trickier.
- *
- * \return GL_TRUE if anything is left to draw, GL_FALSE if totally clipped
- */
-GLboolean
-_mesa_clip_blit(struct gl_context *ctx,
- GLint *srcX0, GLint *srcY0, GLint *srcX1, GLint *srcY1,
- GLint *dstX0, GLint *dstY0, GLint *dstX1, GLint *dstY1)
-{
- const GLint srcXmin = 0;
- const GLint srcXmax = ctx->ReadBuffer->Width;
- const GLint srcYmin = 0;
- const GLint srcYmax = ctx->ReadBuffer->Height;
-
- /* these include scissor bounds */
- const GLint dstXmin = ctx->DrawBuffer->_Xmin;
- const GLint dstXmax = ctx->DrawBuffer->_Xmax;
- const GLint dstYmin = ctx->DrawBuffer->_Ymin;
- const GLint dstYmax = ctx->DrawBuffer->_Ymax;
-
- /*
- printf("PreClipX: src: %d .. %d dst: %d .. %d\n",
- *srcX0, *srcX1, *dstX0, *dstX1);
- printf("PreClipY: src: %d .. %d dst: %d .. %d\n",
- *srcY0, *srcY1, *dstY0, *dstY1);
- */
-
- /* trivial rejection tests */
- if (*dstX0 == *dstX1)
- return GL_FALSE; /* no width */
- if (*dstX0 <= dstXmin && *dstX1 <= dstXmin)
- return GL_FALSE; /* totally out (left) of bounds */
- if (*dstX0 >= dstXmax && *dstX1 >= dstXmax)
- return GL_FALSE; /* totally out (right) of bounds */
-
- if (*dstY0 == *dstY1)
- return GL_FALSE;
- if (*dstY0 <= dstYmin && *dstY1 <= dstYmin)
- return GL_FALSE;
- if (*dstY0 >= dstYmax && *dstY1 >= dstYmax)
- return GL_FALSE;
-
- if (*srcX0 == *srcX1)
- return GL_FALSE;
- if (*srcX0 <= srcXmin && *srcX1 <= srcXmin)
- return GL_FALSE;
- if (*srcX0 >= srcXmax && *srcX1 >= srcXmax)
- return GL_FALSE;
-
- if (*srcY0 == *srcY1)
- return GL_FALSE;
- if (*srcY0 <= srcYmin && *srcY1 <= srcYmin)
- return GL_FALSE;
- if (*srcY0 >= srcYmax && *srcY1 >= srcYmax)
- return GL_FALSE;
-
- /*
- * dest clip
- */
- clip_right_or_top(srcX0, srcX1, dstX0, dstX1, dstXmax);
- clip_right_or_top(srcY0, srcY1, dstY0, dstY1, dstYmax);
- clip_left_or_bottom(srcX0, srcX1, dstX0, dstX1, dstXmin);
- clip_left_or_bottom(srcY0, srcY1, dstY0, dstY1, dstYmin);
-
- /*
- * src clip (just swap src/dst values from above)
- */
- clip_right_or_top(dstX0, dstX1, srcX0, srcX1, srcXmax);
- clip_right_or_top(dstY0, dstY1, srcY0, srcY1, srcYmax);
- clip_left_or_bottom(dstX0, dstX1, srcX0, srcX1, srcXmin);
- clip_left_or_bottom(dstY0, dstY1, srcY0, srcY1, srcYmin);
-
- /*
- printf("PostClipX: src: %d .. %d dst: %d .. %d\n",
- *srcX0, *srcX1, *dstX0, *dstX1);
- printf("PostClipY: src: %d .. %d dst: %d .. %d\n",
- *srcY0, *srcY1, *dstY0, *dstY1);
- */
-
- ASSERT(*dstX0 >= dstXmin);
- ASSERT(*dstX0 <= dstXmax);
- ASSERT(*dstX1 >= dstXmin);
- ASSERT(*dstX1 <= dstXmax);
-
- ASSERT(*dstY0 >= dstYmin);
- ASSERT(*dstY0 <= dstYmax);
- ASSERT(*dstY1 >= dstYmin);
- ASSERT(*dstY1 <= dstYmax);
-
- ASSERT(*srcX0 >= srcXmin);
- ASSERT(*srcX0 <= srcXmax);
- ASSERT(*srcX1 >= srcXmin);
- ASSERT(*srcX1 <= srcXmax);
-
- ASSERT(*srcY0 >= srcYmin);
- ASSERT(*srcY0 <= srcYmax);
- ASSERT(*srcY1 >= srcYmin);
- ASSERT(*srcY1 <= srcYmax);
-
- return GL_TRUE;
-}
+/* + * Mesa 3-D graphics library + * Version: 7.5 + * + * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. + * Copyright (C) 2009 VMware, Inc. All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + + +/** + * \file image.c + * Image handling. + */ + + +#include "glheader.h" +#include "colormac.h" +#include "image.h" +#include "imports.h" +#include "macros.h" +#include "mfeatures.h" +#include "mtypes.h" + + +/** + * NOTE: + * Normally, BYTE_TO_FLOAT(0) returns 0.00392 That causes problems when + * we later convert the float to a packed integer value (such as for + * GL_RGB5_A1) because we'll wind up with a non-zero value. + * + * We redefine the macros here so zero is handled correctly. + */ +#undef BYTE_TO_FLOAT +#define BYTE_TO_FLOAT(B) ((B) == 0 ? 0.0F : ((2.0F * (B) + 1.0F) * (1.0F/255.0F))) + +#undef SHORT_TO_FLOAT +#define SHORT_TO_FLOAT(S) ((S) == 0 ? 0.0F : ((2.0F * (S) + 1.0F) * (1.0F/65535.0F))) + + + +/** Compute ceiling of integer quotient of A divided by B. */ +#define CEILING( A, B ) ( (A) % (B) == 0 ? (A)/(B) : (A)/(B)+1 ) + + +/** + * \return GL_TRUE if type is packed pixel type, GL_FALSE otherwise. + */ +GLboolean +_mesa_type_is_packed(GLenum type) +{ + switch (type) { + case GL_UNSIGNED_BYTE_3_3_2: + case GL_UNSIGNED_BYTE_2_3_3_REV: + case MESA_UNSIGNED_BYTE_4_4: + case GL_UNSIGNED_SHORT_5_6_5: + case GL_UNSIGNED_SHORT_5_6_5_REV: + case GL_UNSIGNED_SHORT_4_4_4_4: + case GL_UNSIGNED_SHORT_4_4_4_4_REV: + case GL_UNSIGNED_SHORT_5_5_5_1: + case GL_UNSIGNED_SHORT_1_5_5_5_REV: + case GL_UNSIGNED_INT_8_8_8_8: + case GL_UNSIGNED_INT_8_8_8_8_REV: + case GL_UNSIGNED_INT_10_10_10_2: + case GL_UNSIGNED_INT_2_10_10_10_REV: + case GL_UNSIGNED_SHORT_8_8_MESA: + case GL_UNSIGNED_SHORT_8_8_REV_MESA: + case GL_UNSIGNED_INT_24_8_EXT: + return GL_TRUE; + } + + return GL_FALSE; +} + + + +/** + * Flip the order of the 2 bytes in each word in the given array. + * + * \param p array. + * \param n number of words. + */ +void +_mesa_swap2( GLushort *p, GLuint n ) +{ + GLuint i; + for (i = 0; i < n; i++) { + p[i] = (p[i] >> 8) | ((p[i] << 8) & 0xff00); + } +} + + + +/* + * Flip the order of the 4 bytes in each word in the given array. + */ +void +_mesa_swap4( GLuint *p, GLuint n ) +{ + GLuint i, a, b; + for (i = 0; i < n; i++) { + b = p[i]; + a = (b >> 24) + | ((b >> 8) & 0xff00) + | ((b << 8) & 0xff0000) + | ((b << 24) & 0xff000000); + p[i] = a; + } +} + + +/** + * Get the size of a GL data type. + * + * \param type GL data type. + * + * \return the size, in bytes, of the given data type, 0 if a GL_BITMAP, or -1 + * if an invalid type enum. + */ +GLint +_mesa_sizeof_type( GLenum type ) +{ + switch (type) { + case GL_BITMAP: + return 0; + case GL_UNSIGNED_BYTE: + return sizeof(GLubyte); + case GL_BYTE: + return sizeof(GLbyte); + case GL_UNSIGNED_SHORT: + return sizeof(GLushort); + case GL_SHORT: + return sizeof(GLshort); + case GL_UNSIGNED_INT: + return sizeof(GLuint); + case GL_INT: + return sizeof(GLint); + case GL_FLOAT: + return sizeof(GLfloat); + case GL_DOUBLE: + return sizeof(GLdouble); + case GL_HALF_FLOAT_ARB: + return sizeof(GLhalfARB); + case GL_FIXED: + return sizeof(GLfixed); + default: + return -1; + } +} + + +/** + * Same as _mesa_sizeof_type() but also accepting the packed pixel + * format data types. + */ +GLint +_mesa_sizeof_packed_type( GLenum type ) +{ + switch (type) { + case GL_BITMAP: + return 0; + case GL_UNSIGNED_BYTE: + return sizeof(GLubyte); + case GL_BYTE: + return sizeof(GLbyte); + case GL_UNSIGNED_SHORT: + return sizeof(GLushort); + case GL_SHORT: + return sizeof(GLshort); + case GL_UNSIGNED_INT: + return sizeof(GLuint); + case GL_INT: + return sizeof(GLint); + case GL_HALF_FLOAT_ARB: + return sizeof(GLhalfARB); + case GL_FLOAT: + return sizeof(GLfloat); + case GL_UNSIGNED_BYTE_3_3_2: + return sizeof(GLubyte); + case GL_UNSIGNED_BYTE_2_3_3_REV: + return sizeof(GLubyte); + case MESA_UNSIGNED_BYTE_4_4: + return sizeof(GLubyte); + case GL_UNSIGNED_SHORT_5_6_5: + return sizeof(GLushort); + case GL_UNSIGNED_SHORT_5_6_5_REV: + return sizeof(GLushort); + case GL_UNSIGNED_SHORT_4_4_4_4: + return sizeof(GLushort); + case GL_UNSIGNED_SHORT_4_4_4_4_REV: + return sizeof(GLushort); + case GL_UNSIGNED_SHORT_5_5_5_1: + return sizeof(GLushort); + case GL_UNSIGNED_SHORT_1_5_5_5_REV: + return sizeof(GLushort); + case GL_UNSIGNED_INT_8_8_8_8: + return sizeof(GLuint); + case GL_UNSIGNED_INT_8_8_8_8_REV: + return sizeof(GLuint); + case GL_UNSIGNED_INT_10_10_10_2: + return sizeof(GLuint); + case GL_UNSIGNED_INT_2_10_10_10_REV: + return sizeof(GLuint); + case GL_UNSIGNED_SHORT_8_8_MESA: + case GL_UNSIGNED_SHORT_8_8_REV_MESA: + return sizeof(GLushort); + case GL_UNSIGNED_INT_24_8_EXT: + return sizeof(GLuint); + default: + return -1; + } +} + + +/** + * Get the number of components in a pixel format. + * + * \param format pixel format. + * + * \return the number of components in the given format, or -1 if a bad format. + */ +GLint +_mesa_components_in_format( GLenum format ) +{ + switch (format) { + case GL_COLOR_INDEX: + case GL_COLOR_INDEX1_EXT: + case GL_COLOR_INDEX2_EXT: + case GL_COLOR_INDEX4_EXT: + case GL_COLOR_INDEX8_EXT: + case GL_COLOR_INDEX12_EXT: + case GL_COLOR_INDEX16_EXT: + case GL_STENCIL_INDEX: + case GL_DEPTH_COMPONENT: + case GL_RED: + case GL_RED_INTEGER_EXT: + case GL_GREEN: + case GL_GREEN_INTEGER_EXT: + case GL_BLUE: + case GL_BLUE_INTEGER_EXT: + case GL_ALPHA: + case GL_ALPHA_INTEGER_EXT: + case GL_LUMINANCE: + case GL_LUMINANCE_INTEGER_EXT: + case GL_INTENSITY: + return 1; + case GL_LUMINANCE_ALPHA: + case GL_LUMINANCE_ALPHA_INTEGER_EXT: + case GL_RG: + return 2; + case GL_RGB: + case GL_RGB_INTEGER_EXT: + return 3; + case GL_RGBA: + case GL_RGBA_INTEGER_EXT: + return 4; + case GL_BGR: + return 3; + case GL_BGRA: + return 4; + case GL_ABGR_EXT: + return 4; + case GL_YCBCR_MESA: + return 2; + case GL_DEPTH_STENCIL_EXT: + return 2; + case GL_DUDV_ATI: + case GL_DU8DV8_ATI: + return 2; + default: + return -1; + } +} + + +/** + * Get the bytes per pixel of pixel format type pair. + * + * \param format pixel format. + * \param type pixel type. + * + * \return bytes per pixel, or -1 if a bad format or type was given. + */ +GLint +_mesa_bytes_per_pixel( GLenum format, GLenum type ) +{ + GLint comps = _mesa_components_in_format( format ); + if (comps < 0) + return -1; + + switch (type) { + case GL_BITMAP: + return 0; /* special case */ + case GL_BYTE: + case GL_UNSIGNED_BYTE: + return comps * sizeof(GLubyte); + case GL_SHORT: + case GL_UNSIGNED_SHORT: + return comps * sizeof(GLshort); + case GL_INT: + case GL_UNSIGNED_INT: + return comps * sizeof(GLint); + case GL_FLOAT: + return comps * sizeof(GLfloat); + case GL_HALF_FLOAT_ARB: + return comps * sizeof(GLhalfARB); + case GL_UNSIGNED_BYTE_3_3_2: + case GL_UNSIGNED_BYTE_2_3_3_REV: + if (format == GL_RGB || format == GL_BGR || + format == GL_RGB_INTEGER_EXT || format == GL_BGR_INTEGER_EXT) + return sizeof(GLubyte); + else + return -1; /* error */ + case GL_UNSIGNED_SHORT_5_6_5: + case GL_UNSIGNED_SHORT_5_6_5_REV: + if (format == GL_RGB || format == GL_BGR || + format == GL_RGB_INTEGER_EXT || format == GL_BGR_INTEGER_EXT) + return sizeof(GLushort); + else + return -1; /* error */ + case GL_UNSIGNED_SHORT_4_4_4_4: + case GL_UNSIGNED_SHORT_4_4_4_4_REV: + case GL_UNSIGNED_SHORT_5_5_5_1: + case GL_UNSIGNED_SHORT_1_5_5_5_REV: + if (format == GL_RGBA || format == GL_BGRA || format == GL_ABGR_EXT || + format == GL_RGBA_INTEGER_EXT || format == GL_BGRA_INTEGER_EXT) + return sizeof(GLushort); + else + return -1; + case GL_UNSIGNED_INT_8_8_8_8: + case GL_UNSIGNED_INT_8_8_8_8_REV: + case GL_UNSIGNED_INT_10_10_10_2: + case GL_UNSIGNED_INT_2_10_10_10_REV: + if (format == GL_RGBA || format == GL_BGRA || format == GL_ABGR_EXT || + format == GL_RGBA_INTEGER_EXT || format == GL_BGRA_INTEGER_EXT) + return sizeof(GLuint); + else + return -1; + case GL_UNSIGNED_SHORT_8_8_MESA: + case GL_UNSIGNED_SHORT_8_8_REV_MESA: + if (format == GL_YCBCR_MESA) + return sizeof(GLushort); + else + return -1; + case GL_UNSIGNED_INT_24_8_EXT: + if (format == GL_DEPTH_STENCIL_EXT) + return sizeof(GLuint); + else + return -1; + default: + return -1; + } +} + + +/** + * Test for a legal pixel format and type. + * + * \param format pixel format. + * \param type pixel type. + * + * \return GL_TRUE if the given pixel format and type are legal, or GL_FALSE + * otherwise. + */ +GLboolean +_mesa_is_legal_format_and_type(const struct gl_context *ctx, + GLenum format, GLenum type) +{ + switch (format) { + case GL_COLOR_INDEX: + case GL_STENCIL_INDEX: + switch (type) { + case GL_BITMAP: + case GL_BYTE: + case GL_UNSIGNED_BYTE: + case GL_SHORT: + case GL_UNSIGNED_SHORT: + case GL_INT: + case GL_UNSIGNED_INT: + case GL_FLOAT: + return GL_TRUE; + case GL_HALF_FLOAT_ARB: + return ctx->Extensions.ARB_half_float_pixel; + default: + return GL_FALSE; + } + case GL_RED: + case GL_GREEN: + case GL_BLUE: + case GL_ALPHA: +#if 0 /* not legal! see table 3.6 of the 1.5 spec */ + case GL_INTENSITY: +#endif + case GL_LUMINANCE: + case GL_LUMINANCE_ALPHA: + case GL_DEPTH_COMPONENT: + switch (type) { + case GL_BYTE: + case GL_UNSIGNED_BYTE: + case GL_SHORT: + case GL_UNSIGNED_SHORT: + case GL_INT: + case GL_UNSIGNED_INT: + case GL_FLOAT: + return GL_TRUE; + case GL_HALF_FLOAT_ARB: + return ctx->Extensions.ARB_half_float_pixel; + default: + return GL_FALSE; + } + case GL_RG: + if (!ctx->Extensions.ARB_texture_rg) + return GL_FALSE; + + switch (type) { + case GL_BYTE: + case GL_UNSIGNED_BYTE: + case GL_SHORT: + case GL_UNSIGNED_SHORT: + case GL_INT: + case GL_UNSIGNED_INT: + case GL_FLOAT: + return GL_TRUE; + case GL_HALF_FLOAT_ARB: + return ctx->Extensions.ARB_half_float_pixel; + default: + return GL_FALSE; + } + case GL_RGB: + switch (type) { + case GL_BYTE: + case GL_UNSIGNED_BYTE: + case GL_SHORT: + case GL_UNSIGNED_SHORT: + case GL_INT: + case GL_UNSIGNED_INT: + case GL_FLOAT: + case GL_UNSIGNED_BYTE_3_3_2: + case GL_UNSIGNED_BYTE_2_3_3_REV: + case GL_UNSIGNED_SHORT_5_6_5: + case GL_UNSIGNED_SHORT_5_6_5_REV: + return GL_TRUE; + case GL_HALF_FLOAT_ARB: + return ctx->Extensions.ARB_half_float_pixel; + default: + return GL_FALSE; + } + case GL_BGR: + switch (type) { + /* NOTE: no packed types are supported with BGR. That's + * intentional, according to the GL spec. + */ + case GL_BYTE: + case GL_UNSIGNED_BYTE: + case GL_SHORT: + case GL_UNSIGNED_SHORT: + case GL_INT: + case GL_UNSIGNED_INT: + case GL_FLOAT: + return GL_TRUE; + case GL_HALF_FLOAT_ARB: + return ctx->Extensions.ARB_half_float_pixel; + default: + return GL_FALSE; + } + case GL_RGBA: + case GL_BGRA: + case GL_ABGR_EXT: + switch (type) { + case GL_BYTE: + case GL_UNSIGNED_BYTE: + case GL_SHORT: + case GL_UNSIGNED_SHORT: + case GL_INT: + case GL_UNSIGNED_INT: + case GL_FLOAT: + case GL_UNSIGNED_SHORT_4_4_4_4: + case GL_UNSIGNED_SHORT_4_4_4_4_REV: + case GL_UNSIGNED_SHORT_5_5_5_1: + case GL_UNSIGNED_SHORT_1_5_5_5_REV: + case GL_UNSIGNED_INT_8_8_8_8: + case GL_UNSIGNED_INT_8_8_8_8_REV: + case GL_UNSIGNED_INT_10_10_10_2: + case GL_UNSIGNED_INT_2_10_10_10_REV: + return GL_TRUE; + case GL_HALF_FLOAT_ARB: + return ctx->Extensions.ARB_half_float_pixel; + default: + return GL_FALSE; + } + case GL_YCBCR_MESA: + if (type == GL_UNSIGNED_SHORT_8_8_MESA || + type == GL_UNSIGNED_SHORT_8_8_REV_MESA) + return GL_TRUE; + else + return GL_FALSE; + case GL_DEPTH_STENCIL_EXT: + if (ctx->Extensions.EXT_packed_depth_stencil + && type == GL_UNSIGNED_INT_24_8_EXT) + return GL_TRUE; + else + return GL_FALSE; + case GL_DUDV_ATI: + case GL_DU8DV8_ATI: + switch (type) { + case GL_BYTE: + case GL_UNSIGNED_BYTE: + case GL_SHORT: + case GL_UNSIGNED_SHORT: + case GL_INT: + case GL_UNSIGNED_INT: + case GL_FLOAT: + return GL_TRUE; + default: + return GL_FALSE; + } + + /* integer-valued formats */ + case GL_RED_INTEGER_EXT: + case GL_GREEN_INTEGER_EXT: + case GL_BLUE_INTEGER_EXT: + case GL_ALPHA_INTEGER_EXT: + switch (type) { + case GL_BYTE: + case GL_UNSIGNED_BYTE: + case GL_SHORT: + case GL_UNSIGNED_SHORT: + case GL_INT: + case GL_UNSIGNED_INT: + return ctx->Extensions.EXT_texture_integer; + default: + return GL_FALSE; + } + + case GL_RGB_INTEGER_EXT: + switch (type) { + case GL_BYTE: + case GL_UNSIGNED_BYTE: + case GL_SHORT: + case GL_UNSIGNED_SHORT: + case GL_INT: + case GL_UNSIGNED_INT: + case GL_UNSIGNED_BYTE_3_3_2: + case GL_UNSIGNED_BYTE_2_3_3_REV: + case GL_UNSIGNED_SHORT_5_6_5: + case GL_UNSIGNED_SHORT_5_6_5_REV: + return ctx->Extensions.EXT_texture_integer; + default: + return GL_FALSE; + } + + case GL_BGR_INTEGER_EXT: + switch (type) { + case GL_BYTE: + case GL_UNSIGNED_BYTE: + case GL_SHORT: + case GL_UNSIGNED_SHORT: + case GL_INT: + case GL_UNSIGNED_INT: + /* NOTE: no packed formats w/ BGR format */ + return ctx->Extensions.EXT_texture_integer; + default: + return GL_FALSE; + } + + case GL_RGBA_INTEGER_EXT: + case GL_BGRA_INTEGER_EXT: + switch (type) { + case GL_BYTE: + case GL_UNSIGNED_BYTE: + case GL_SHORT: + case GL_UNSIGNED_SHORT: + case GL_INT: + case GL_UNSIGNED_INT: + case GL_UNSIGNED_SHORT_4_4_4_4: + case GL_UNSIGNED_SHORT_4_4_4_4_REV: + case GL_UNSIGNED_SHORT_5_5_5_1: + case GL_UNSIGNED_SHORT_1_5_5_5_REV: + case GL_UNSIGNED_INT_8_8_8_8: + case GL_UNSIGNED_INT_8_8_8_8_REV: + case GL_UNSIGNED_INT_10_10_10_2: + case GL_UNSIGNED_INT_2_10_10_10_REV: + return ctx->Extensions.EXT_texture_integer; + default: + return GL_FALSE; + } + + case GL_LUMINANCE_INTEGER_EXT: + case GL_LUMINANCE_ALPHA_INTEGER_EXT: + switch (type) { + case GL_BYTE: + case GL_UNSIGNED_BYTE: + case GL_SHORT: + case GL_UNSIGNED_SHORT: + case GL_INT: + case GL_UNSIGNED_INT: + return ctx->Extensions.EXT_texture_integer; + default: + return GL_FALSE; + } + + default: + ; /* fall-through */ + } + return GL_FALSE; +} + + +/** + * Test if the given image format is a color/RGBA format (i.e., not color + * index, depth, stencil, etc). + * \param format the image format value (may by an internal texture format) + * \return GL_TRUE if its a color/RGBA format, GL_FALSE otherwise. + */ +GLboolean +_mesa_is_color_format(GLenum format) +{ + switch (format) { + case GL_RED: + case GL_GREEN: + case GL_BLUE: + case GL_ALPHA: + case GL_ALPHA4: + case GL_ALPHA8: + case GL_ALPHA12: + case GL_ALPHA16: + case 1: + case GL_LUMINANCE: + case GL_LUMINANCE4: + case GL_LUMINANCE8: + case GL_LUMINANCE12: + case GL_LUMINANCE16: + case 2: + case GL_LUMINANCE_ALPHA: + case GL_LUMINANCE4_ALPHA4: + case GL_LUMINANCE6_ALPHA2: + case GL_LUMINANCE8_ALPHA8: + case GL_LUMINANCE12_ALPHA4: + case GL_LUMINANCE12_ALPHA12: + case GL_LUMINANCE16_ALPHA16: + case GL_INTENSITY: + case GL_INTENSITY4: + case GL_INTENSITY8: + case GL_INTENSITY12: + case GL_INTENSITY16: + case GL_R8: + case GL_R16: + case GL_RG: + case GL_RG8: + case GL_RG16: + case 3: + case GL_RGB: + case GL_BGR: + case GL_R3_G3_B2: + case GL_RGB4: + case GL_RGB5: + case GL_RGB8: + case GL_RGB10: + case GL_RGB12: + case GL_RGB16: + case 4: + case GL_ABGR_EXT: + case GL_RGBA: + case GL_BGRA: + case GL_RGBA2: + case GL_RGBA4: + case GL_RGB5_A1: + case GL_RGBA8: + case GL_RGB10_A2: + case GL_RGBA12: + case GL_RGBA16: + /* float texture formats */ + case GL_ALPHA16F_ARB: + case GL_ALPHA32F_ARB: + case GL_LUMINANCE16F_ARB: + case GL_LUMINANCE32F_ARB: + case GL_LUMINANCE_ALPHA16F_ARB: + case GL_LUMINANCE_ALPHA32F_ARB: + case GL_INTENSITY16F_ARB: + case GL_INTENSITY32F_ARB: + case GL_R16F: + case GL_R32F: + case GL_RG16F: + case GL_RG32F: + case GL_RGB16F_ARB: + case GL_RGB32F_ARB: + case GL_RGBA16F_ARB: + case GL_RGBA32F_ARB: + /* compressed formats */ + case GL_COMPRESSED_ALPHA: + case GL_COMPRESSED_LUMINANCE: + case GL_COMPRESSED_LUMINANCE_ALPHA: + case GL_COMPRESSED_INTENSITY: + case GL_COMPRESSED_RED: + case GL_COMPRESSED_RG: + case GL_COMPRESSED_RGB: + case GL_COMPRESSED_RGBA: + case GL_RGB_S3TC: + case GL_RGB4_S3TC: + case GL_RGBA_S3TC: + case GL_RGBA4_S3TC: + case GL_COMPRESSED_RGB_S3TC_DXT1_EXT: + case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT: + case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT: + case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT: + case GL_COMPRESSED_RGB_FXT1_3DFX: + case GL_COMPRESSED_RGBA_FXT1_3DFX: +#if FEATURE_EXT_texture_sRGB + case GL_SRGB_EXT: + case GL_SRGB8_EXT: + case GL_SRGB_ALPHA_EXT: + case GL_SRGB8_ALPHA8_EXT: + case GL_SLUMINANCE_ALPHA_EXT: + case GL_SLUMINANCE8_ALPHA8_EXT: + case GL_SLUMINANCE_EXT: + case GL_SLUMINANCE8_EXT: + case GL_COMPRESSED_SRGB_EXT: + case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT: + case GL_COMPRESSED_SRGB_ALPHA_EXT: + case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT: + case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT: + case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT: + case GL_COMPRESSED_SLUMINANCE_EXT: + case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT: +#endif /* FEATURE_EXT_texture_sRGB */ + case GL_COMPRESSED_RED_RGTC1: + case GL_COMPRESSED_SIGNED_RED_RGTC1: + case GL_COMPRESSED_RG_RGTC2: + case GL_COMPRESSED_SIGNED_RG_RGTC2: + case GL_COMPRESSED_LUMINANCE_LATC1_EXT: + case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT: + case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT: + case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT: + case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI: + /* signed, normalized texture formats */ + case GL_RGBA_SNORM: + case GL_RGBA8_SNORM: + /* generic integer formats */ + case GL_RED_INTEGER_EXT: + case GL_GREEN_INTEGER_EXT: + case GL_BLUE_INTEGER_EXT: + case GL_ALPHA_INTEGER_EXT: + case GL_RGB_INTEGER_EXT: + case GL_RGBA_INTEGER_EXT: + case GL_BGR_INTEGER_EXT: + case GL_BGRA_INTEGER_EXT: + case GL_LUMINANCE_INTEGER_EXT: + case GL_LUMINANCE_ALPHA_INTEGER_EXT: + /* sized integer formats */ + case GL_RGBA32UI_EXT: + case GL_RGB32UI_EXT: + case GL_ALPHA32UI_EXT: + case GL_INTENSITY32UI_EXT: + case GL_LUMINANCE32UI_EXT: + case GL_LUMINANCE_ALPHA32UI_EXT: + case GL_RGBA16UI_EXT: + case GL_RGB16UI_EXT: + case GL_ALPHA16UI_EXT: + case GL_INTENSITY16UI_EXT: + case GL_LUMINANCE16UI_EXT: + case GL_LUMINANCE_ALPHA16UI_EXT: + case GL_RGBA8UI_EXT: + case GL_RGB8UI_EXT: + case GL_ALPHA8UI_EXT: + case GL_INTENSITY8UI_EXT: + case GL_LUMINANCE8UI_EXT: + case GL_LUMINANCE_ALPHA8UI_EXT: + case GL_RGBA32I_EXT: + case GL_RGB32I_EXT: + case GL_ALPHA32I_EXT: + case GL_INTENSITY32I_EXT: + case GL_LUMINANCE32I_EXT: + case GL_LUMINANCE_ALPHA32I_EXT: + case GL_RGBA16I_EXT: + case GL_RGB16I_EXT: + case GL_ALPHA16I_EXT: + case GL_INTENSITY16I_EXT: + case GL_LUMINANCE16I_EXT: + case GL_LUMINANCE_ALPHA16I_EXT: + case GL_RGBA8I_EXT: + case GL_RGB8I_EXT: + case GL_ALPHA8I_EXT: + case GL_INTENSITY8I_EXT: + case GL_LUMINANCE8I_EXT: + case GL_LUMINANCE_ALPHA8I_EXT: + return GL_TRUE; + case GL_YCBCR_MESA: /* not considered to be RGB */ + /* fall-through */ + default: + return GL_FALSE; + } +} + + +/** + * Test if the given image format is a color index format. + */ +GLboolean +_mesa_is_index_format(GLenum format) +{ + switch (format) { + case GL_COLOR_INDEX: + case GL_COLOR_INDEX1_EXT: + case GL_COLOR_INDEX2_EXT: + case GL_COLOR_INDEX4_EXT: + case GL_COLOR_INDEX8_EXT: + case GL_COLOR_INDEX12_EXT: + case GL_COLOR_INDEX16_EXT: + return GL_TRUE; + default: + return GL_FALSE; + } +} + + +/** + * Test if the given image format is a depth component format. + */ +GLboolean +_mesa_is_depth_format(GLenum format) +{ + switch (format) { + case GL_DEPTH_COMPONENT: + case GL_DEPTH_COMPONENT16: + case GL_DEPTH_COMPONENT24: + case GL_DEPTH_COMPONENT32: + return GL_TRUE; + default: + return GL_FALSE; + } +} + + +/** + * Test if the given image format is a stencil format. + */ +GLboolean +_mesa_is_stencil_format(GLenum format) +{ + switch (format) { + case GL_STENCIL_INDEX: + case GL_DEPTH_STENCIL: + return GL_TRUE; + default: + return GL_FALSE; + } +} + + +/** + * Test if the given image format is a YCbCr format. + */ +GLboolean +_mesa_is_ycbcr_format(GLenum format) +{ + switch (format) { + case GL_YCBCR_MESA: + return GL_TRUE; + default: + return GL_FALSE; + } +} + + +/** + * Test if the given image format is a depth+stencil format. + */ +GLboolean +_mesa_is_depthstencil_format(GLenum format) +{ + switch (format) { + case GL_DEPTH24_STENCIL8_EXT: + case GL_DEPTH_STENCIL_EXT: + return GL_TRUE; + default: + return GL_FALSE; + } +} + + +/** + * Test if the given image format is a depth or stencil format. + */ +GLboolean +_mesa_is_depth_or_stencil_format(GLenum format) +{ + switch (format) { + case GL_DEPTH_COMPONENT: + case GL_DEPTH_COMPONENT16: + case GL_DEPTH_COMPONENT24: + case GL_DEPTH_COMPONENT32: + case GL_STENCIL_INDEX: + case GL_STENCIL_INDEX1_EXT: + case GL_STENCIL_INDEX4_EXT: + case GL_STENCIL_INDEX8_EXT: + case GL_STENCIL_INDEX16_EXT: + case GL_DEPTH_STENCIL_EXT: + case GL_DEPTH24_STENCIL8_EXT: + return GL_TRUE; + default: + return GL_FALSE; + } +} + + +/** + * Test if the given image format is a dudv format. + */ +GLboolean +_mesa_is_dudv_format(GLenum format) +{ + switch (format) { + case GL_DUDV_ATI: + case GL_DU8DV8_ATI: + return GL_TRUE; + default: + return GL_FALSE; + } +} + + +/** + * Test if the given format is an integer (non-normalized) format. + */ +GLboolean +_mesa_is_integer_format(GLenum format) +{ + switch (format) { + /* generic integer formats */ + case GL_RED_INTEGER_EXT: + case GL_GREEN_INTEGER_EXT: + case GL_BLUE_INTEGER_EXT: + case GL_ALPHA_INTEGER_EXT: + case GL_RGB_INTEGER_EXT: + case GL_RGBA_INTEGER_EXT: + case GL_BGR_INTEGER_EXT: + case GL_BGRA_INTEGER_EXT: + case GL_LUMINANCE_INTEGER_EXT: + case GL_LUMINANCE_ALPHA_INTEGER_EXT: + /* specific integer formats */ + case GL_RGBA32UI_EXT: + case GL_RGB32UI_EXT: + case GL_ALPHA32UI_EXT: + case GL_INTENSITY32UI_EXT: + case GL_LUMINANCE32UI_EXT: + case GL_LUMINANCE_ALPHA32UI_EXT: + case GL_RGBA16UI_EXT: + case GL_RGB16UI_EXT: + case GL_ALPHA16UI_EXT: + case GL_INTENSITY16UI_EXT: + case GL_LUMINANCE16UI_EXT: + case GL_LUMINANCE_ALPHA16UI_EXT: + case GL_RGBA8UI_EXT: + case GL_RGB8UI_EXT: + case GL_ALPHA8UI_EXT: + case GL_INTENSITY8UI_EXT: + case GL_LUMINANCE8UI_EXT: + case GL_LUMINANCE_ALPHA8UI_EXT: + case GL_RGBA32I_EXT: + case GL_RGB32I_EXT: + case GL_ALPHA32I_EXT: + case GL_INTENSITY32I_EXT: + case GL_LUMINANCE32I_EXT: + case GL_LUMINANCE_ALPHA32I_EXT: + case GL_RGBA16I_EXT: + case GL_RGB16I_EXT: + case GL_ALPHA16I_EXT: + case GL_INTENSITY16I_EXT: + case GL_LUMINANCE16I_EXT: + case GL_LUMINANCE_ALPHA16I_EXT: + case GL_RGBA8I_EXT: + case GL_RGB8I_EXT: + case GL_ALPHA8I_EXT: + case GL_INTENSITY8I_EXT: + case GL_LUMINANCE8I_EXT: + case GL_LUMINANCE_ALPHA8I_EXT: + return GL_TRUE; + default: + return GL_FALSE; + } +} + + +/** + * Test if an image format is a supported compressed format. + * \param format the internal format token provided by the user. + * \return GL_TRUE if compressed, GL_FALSE if uncompressed + */ +GLboolean +_mesa_is_compressed_format(struct gl_context *ctx, GLenum format) +{ + switch (format) { + case GL_COMPRESSED_RGB_S3TC_DXT1_EXT: + case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT: + case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT: + case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT: + return ctx->Extensions.EXT_texture_compression_s3tc; + case GL_RGB_S3TC: + case GL_RGB4_S3TC: + case GL_RGBA_S3TC: + case GL_RGBA4_S3TC: + return ctx->Extensions.S3_s3tc; + case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT: + case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT: + case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT: + case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT: + return ctx->Extensions.EXT_texture_sRGB + && ctx->Extensions.EXT_texture_compression_s3tc; + case GL_COMPRESSED_RGB_FXT1_3DFX: + case GL_COMPRESSED_RGBA_FXT1_3DFX: + return ctx->Extensions.TDFX_texture_compression_FXT1; + case GL_COMPRESSED_RED_RGTC1: + case GL_COMPRESSED_SIGNED_RED_RGTC1: + case GL_COMPRESSED_RG_RGTC2: + case GL_COMPRESSED_SIGNED_RG_RGTC2: + return ctx->Extensions.ARB_texture_compression_rgtc; + case GL_COMPRESSED_LUMINANCE_LATC1_EXT: + case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT: + case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT: + case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT: + return ctx->Extensions.EXT_texture_compression_latc; + case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI: + return ctx->Extensions.ATI_texture_compression_3dc; + default: + return GL_FALSE; + } +} + + +/** + * Return the address of a specific pixel in an image (1D, 2D or 3D). + * + * Pixel unpacking/packing parameters are observed according to \p packing. + * + * \param dimensions either 1, 2 or 3 to indicate dimensionality of image + * \param image starting address of image data + * \param width the image width + * \param height theimage height + * \param format the pixel format + * \param type the pixel data type + * \param packing the pixelstore attributes + * \param img which image in the volume (0 for 1D or 2D images) + * \param row row of pixel in the image (0 for 1D images) + * \param column column of pixel in the image + * + * \return address of pixel on success, or NULL on error. + * + * \sa gl_pixelstore_attrib. + */ +GLvoid * +_mesa_image_address( GLuint dimensions, + const struct gl_pixelstore_attrib *packing, + const GLvoid *image, + GLsizei width, GLsizei height, + GLenum format, GLenum type, + GLint img, GLint row, GLint column ) +{ + GLint alignment; /* 1, 2 or 4 */ + GLint pixels_per_row; + GLint rows_per_image; + GLint skiprows; + GLint skippixels; + GLint skipimages; /* for 3-D volume images */ + GLubyte *pixel_addr; + + ASSERT(dimensions >= 1 && dimensions <= 3); + + alignment = packing->Alignment; + if (packing->RowLength > 0) { + pixels_per_row = packing->RowLength; + } + else { + pixels_per_row = width; + } + if (packing->ImageHeight > 0) { + rows_per_image = packing->ImageHeight; + } + else { + rows_per_image = height; + } + + skippixels = packing->SkipPixels; + /* Note: SKIP_ROWS _is_ used for 1D images */ + skiprows = packing->SkipRows; + /* Note: SKIP_IMAGES is only used for 3D images */ + skipimages = (dimensions == 3) ? packing->SkipImages : 0; + + if (type == GL_BITMAP) { + /* BITMAP data */ + GLint comp_per_pixel; /* components per pixel */ + GLint bytes_per_comp; /* bytes per component */ + GLint bytes_per_row; + GLint bytes_per_image; + + /* Compute bytes per component */ + bytes_per_comp = _mesa_sizeof_packed_type( type ); + if (bytes_per_comp < 0) { + return NULL; + } + + /* Compute number of components per pixel */ + comp_per_pixel = _mesa_components_in_format( format ); + if (comp_per_pixel < 0) { + return NULL; + } + + bytes_per_row = alignment + * CEILING( comp_per_pixel*pixels_per_row, 8*alignment ); + + bytes_per_image = bytes_per_row * rows_per_image; + + pixel_addr = (GLubyte *) image + + (skipimages + img) * bytes_per_image + + (skiprows + row) * bytes_per_row + + (skippixels + column) / 8; + } + else { + /* Non-BITMAP data */ + GLint bytes_per_pixel, bytes_per_row, remainder, bytes_per_image; + GLint topOfImage; + + bytes_per_pixel = _mesa_bytes_per_pixel( format, type ); + + /* The pixel type and format should have been error checked earlier */ + assert(bytes_per_pixel > 0); + + bytes_per_row = pixels_per_row * bytes_per_pixel; + remainder = bytes_per_row % alignment; + if (remainder > 0) + bytes_per_row += (alignment - remainder); + + ASSERT(bytes_per_row % alignment == 0); + + bytes_per_image = bytes_per_row * rows_per_image; + + if (packing->Invert) { + /* set pixel_addr to the last row */ + topOfImage = bytes_per_row * (height - 1); + bytes_per_row = -bytes_per_row; + } + else { + topOfImage = 0; + } + + /* compute final pixel address */ + pixel_addr = (GLubyte *) image + + (skipimages + img) * bytes_per_image + + topOfImage + + (skiprows + row) * bytes_per_row + + (skippixels + column) * bytes_per_pixel; + } + + return (GLvoid *) pixel_addr; +} + + +GLvoid * +_mesa_image_address1d( const struct gl_pixelstore_attrib *packing, + const GLvoid *image, + GLsizei width, + GLenum format, GLenum type, + GLint column ) +{ + return _mesa_image_address(1, packing, image, width, 1, + format, type, 0, 0, column); +} + + +GLvoid * +_mesa_image_address2d( const struct gl_pixelstore_attrib *packing, + const GLvoid *image, + GLsizei width, GLsizei height, + GLenum format, GLenum type, + GLint row, GLint column ) +{ + return _mesa_image_address(2, packing, image, width, height, + format, type, 0, row, column); +} + + +GLvoid * +_mesa_image_address3d( const struct gl_pixelstore_attrib *packing, + const GLvoid *image, + GLsizei width, GLsizei height, + GLenum format, GLenum type, + GLint img, GLint row, GLint column ) +{ + return _mesa_image_address(3, packing, image, width, height, + format, type, img, row, column); +} + + + +/** + * Compute the stride (in bytes) between image rows. + * + * \param packing the pixelstore attributes + * \param width image width. + * \param format pixel format. + * \param type pixel data type. + * + * \return the stride in bytes for the given parameters, or -1 if error + */ +GLint +_mesa_image_row_stride( const struct gl_pixelstore_attrib *packing, + GLint width, GLenum format, GLenum type ) +{ + GLint bytesPerRow, remainder; + + ASSERT(packing); + + if (type == GL_BITMAP) { + if (packing->RowLength == 0) { + bytesPerRow = (width + 7) / 8; + } + else { + bytesPerRow = (packing->RowLength + 7) / 8; + } + } + else { + /* Non-BITMAP data */ + const GLint bytesPerPixel = _mesa_bytes_per_pixel(format, type); + if (bytesPerPixel <= 0) + return -1; /* error */ + if (packing->RowLength == 0) { + bytesPerRow = bytesPerPixel * width; + } + else { + bytesPerRow = bytesPerPixel * packing->RowLength; + } + } + + remainder = bytesPerRow % packing->Alignment; + if (remainder > 0) { + bytesPerRow += (packing->Alignment - remainder); + } + + if (packing->Invert) { + /* negate the bytes per row (negative row stride) */ + bytesPerRow = -bytesPerRow; + } + + return bytesPerRow; +} + + +/* + * Compute the stride between images in a 3D texture (in bytes) for the given + * pixel packing parameters and image width, format and type. + */ +GLint +_mesa_image_image_stride( const struct gl_pixelstore_attrib *packing, + GLint width, GLint height, + GLenum format, GLenum type ) +{ + GLint bytesPerRow, bytesPerImage, remainder; + + ASSERT(packing); + + if (type == GL_BITMAP) { + if (packing->RowLength == 0) { + bytesPerRow = (width + 7) / 8; + } + else { + bytesPerRow = (packing->RowLength + 7) / 8; + } + } + else { + const GLint bytesPerPixel = _mesa_bytes_per_pixel(format, type); + + if (bytesPerPixel <= 0) + return -1; /* error */ + if (packing->RowLength == 0) { + bytesPerRow = bytesPerPixel * width; + } + else { + bytesPerRow = bytesPerPixel * packing->RowLength; + } + } + + remainder = bytesPerRow % packing->Alignment; + if (remainder > 0) + bytesPerRow += (packing->Alignment - remainder); + + if (packing->ImageHeight == 0) + bytesPerImage = bytesPerRow * height; + else + bytesPerImage = bytesPerRow * packing->ImageHeight; + + return bytesPerImage; +} + + + +/** + * "Expand" a bitmap from 1-bit per pixel to 8-bits per pixel. + * This is typically used to convert a bitmap into a GLubyte/pixel texture. + * "On" bits will set texels to \p onValue. + * "Off" bits will not modify texels. + * \param width src bitmap width in pixels + * \param height src bitmap height in pixels + * \param unpack bitmap unpacking state + * \param bitmap the src bitmap data + * \param destBuffer start of dest buffer + * \param destStride row stride in dest buffer + * \param onValue if bit is 1, set destBuffer pixel to this value + */ +void +_mesa_expand_bitmap(GLsizei width, GLsizei height, + const struct gl_pixelstore_attrib *unpack, + const GLubyte *bitmap, + GLubyte *destBuffer, GLint destStride, + GLubyte onValue) +{ + const GLubyte *srcRow = (const GLubyte *) + _mesa_image_address2d(unpack, bitmap, width, height, + GL_COLOR_INDEX, GL_BITMAP, 0, 0); + const GLint srcStride = _mesa_image_row_stride(unpack, width, + GL_COLOR_INDEX, GL_BITMAP); + GLint row, col; + +#define SET_PIXEL(COL, ROW) \ + destBuffer[(ROW) * destStride + (COL)] = onValue; + + for (row = 0; row < height; row++) { + const GLubyte *src = srcRow; + + if (unpack->LsbFirst) { + /* Lsb first */ + GLubyte mask = 1U << (unpack->SkipPixels & 0x7); + for (col = 0; col < width; col++) { + + if (*src & mask) { + SET_PIXEL(col, row); + } + + if (mask == 128U) { + src++; + mask = 1U; + } + else { + mask = mask << 1; + } + } + + /* get ready for next row */ + if (mask != 1) + src++; + } + else { + /* Msb first */ + GLubyte mask = 128U >> (unpack->SkipPixels & 0x7); + for (col = 0; col < width; col++) { + + if (*src & mask) { + SET_PIXEL(col, row); + } + + if (mask == 1U) { + src++; + mask = 128U; + } + else { + mask = mask >> 1; + } + } + + /* get ready for next row */ + if (mask != 128) + src++; + } + + srcRow += srcStride; + } /* row */ + +#undef SET_PIXEL +} + + + + +/** + * Convert an array of RGBA colors from one datatype to another. + * NOTE: src may equal dst. In that case, we use a temporary buffer. + */ +void +_mesa_convert_colors(GLenum srcType, const GLvoid *src, + GLenum dstType, GLvoid *dst, + GLuint count, const GLubyte mask[]) +{ + GLuint tempBuffer[MAX_WIDTH][4]; + const GLboolean useTemp = (src == dst); + + ASSERT(srcType != dstType); + + switch (srcType) { + case GL_UNSIGNED_BYTE: + if (dstType == GL_UNSIGNED_SHORT) { + const GLubyte (*src1)[4] = (const GLubyte (*)[4]) src; + GLushort (*dst2)[4] = (GLushort (*)[4]) (useTemp ? tempBuffer : dst); + GLuint i; + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + dst2[i][RCOMP] = UBYTE_TO_USHORT(src1[i][RCOMP]); + dst2[i][GCOMP] = UBYTE_TO_USHORT(src1[i][GCOMP]); + dst2[i][BCOMP] = UBYTE_TO_USHORT(src1[i][BCOMP]); + dst2[i][ACOMP] = UBYTE_TO_USHORT(src1[i][ACOMP]); + } + } + if (useTemp) + memcpy(dst, tempBuffer, count * 4 * sizeof(GLushort)); + } + else { + const GLubyte (*src1)[4] = (const GLubyte (*)[4]) src; + GLfloat (*dst4)[4] = (GLfloat (*)[4]) (useTemp ? tempBuffer : dst); + GLuint i; + ASSERT(dstType == GL_FLOAT); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + dst4[i][RCOMP] = UBYTE_TO_FLOAT(src1[i][RCOMP]); + dst4[i][GCOMP] = UBYTE_TO_FLOAT(src1[i][GCOMP]); + dst4[i][BCOMP] = UBYTE_TO_FLOAT(src1[i][BCOMP]); + dst4[i][ACOMP] = UBYTE_TO_FLOAT(src1[i][ACOMP]); + } + } + if (useTemp) + memcpy(dst, tempBuffer, count * 4 * sizeof(GLfloat)); + } + break; + case GL_UNSIGNED_SHORT: + if (dstType == GL_UNSIGNED_BYTE) { + const GLushort (*src2)[4] = (const GLushort (*)[4]) src; + GLubyte (*dst1)[4] = (GLubyte (*)[4]) (useTemp ? tempBuffer : dst); + GLuint i; + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + dst1[i][RCOMP] = USHORT_TO_UBYTE(src2[i][RCOMP]); + dst1[i][GCOMP] = USHORT_TO_UBYTE(src2[i][GCOMP]); + dst1[i][BCOMP] = USHORT_TO_UBYTE(src2[i][BCOMP]); + dst1[i][ACOMP] = USHORT_TO_UBYTE(src2[i][ACOMP]); + } + } + if (useTemp) + memcpy(dst, tempBuffer, count * 4 * sizeof(GLubyte)); + } + else { + const GLushort (*src2)[4] = (const GLushort (*)[4]) src; + GLfloat (*dst4)[4] = (GLfloat (*)[4]) (useTemp ? tempBuffer : dst); + GLuint i; + ASSERT(dstType == GL_FLOAT); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + dst4[i][RCOMP] = USHORT_TO_FLOAT(src2[i][RCOMP]); + dst4[i][GCOMP] = USHORT_TO_FLOAT(src2[i][GCOMP]); + dst4[i][BCOMP] = USHORT_TO_FLOAT(src2[i][BCOMP]); + dst4[i][ACOMP] = USHORT_TO_FLOAT(src2[i][ACOMP]); + } + } + if (useTemp) + memcpy(dst, tempBuffer, count * 4 * sizeof(GLfloat)); + } + break; + case GL_FLOAT: + if (dstType == GL_UNSIGNED_BYTE) { + const GLfloat (*src4)[4] = (const GLfloat (*)[4]) src; + GLubyte (*dst1)[4] = (GLubyte (*)[4]) (useTemp ? tempBuffer : dst); + GLuint i; + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + UNCLAMPED_FLOAT_TO_UBYTE(dst1[i][RCOMP], src4[i][RCOMP]); + UNCLAMPED_FLOAT_TO_UBYTE(dst1[i][GCOMP], src4[i][GCOMP]); + UNCLAMPED_FLOAT_TO_UBYTE(dst1[i][BCOMP], src4[i][BCOMP]); + UNCLAMPED_FLOAT_TO_UBYTE(dst1[i][ACOMP], src4[i][ACOMP]); + } + } + if (useTemp) + memcpy(dst, tempBuffer, count * 4 * sizeof(GLubyte)); + } + else { + const GLfloat (*src4)[4] = (const GLfloat (*)[4]) src; + GLushort (*dst2)[4] = (GLushort (*)[4]) (useTemp ? tempBuffer : dst); + GLuint i; + ASSERT(dstType == GL_UNSIGNED_SHORT); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + UNCLAMPED_FLOAT_TO_USHORT(dst2[i][RCOMP], src4[i][RCOMP]); + UNCLAMPED_FLOAT_TO_USHORT(dst2[i][GCOMP], src4[i][GCOMP]); + UNCLAMPED_FLOAT_TO_USHORT(dst2[i][BCOMP], src4[i][BCOMP]); + UNCLAMPED_FLOAT_TO_USHORT(dst2[i][ACOMP], src4[i][ACOMP]); + } + } + if (useTemp) + memcpy(dst, tempBuffer, count * 4 * sizeof(GLushort)); + } + break; + default: + _mesa_problem(NULL, "Invalid datatype in _mesa_convert_colors"); + } +} + + + + +/** + * Perform basic clipping for glDrawPixels. The image's position and size + * and the unpack SkipPixels and SkipRows are adjusted so that the image + * region is entirely within the window and scissor bounds. + * NOTE: this will only work when glPixelZoom is (1, 1) or (1, -1). + * If Pixel.ZoomY is -1, *destY will be changed to be the first row which + * we'll actually write. Beforehand, *destY-1 is the first drawing row. + * + * \return GL_TRUE if image is ready for drawing or + * GL_FALSE if image was completely clipped away (draw nothing) + */ +GLboolean +_mesa_clip_drawpixels(const struct gl_context *ctx, + GLint *destX, GLint *destY, + GLsizei *width, GLsizei *height, + struct gl_pixelstore_attrib *unpack) +{ + const struct gl_framebuffer *buffer = ctx->DrawBuffer; + + if (unpack->RowLength == 0) { + unpack->RowLength = *width; + } + + ASSERT(ctx->Pixel.ZoomX == 1.0F); + ASSERT(ctx->Pixel.ZoomY == 1.0F || ctx->Pixel.ZoomY == -1.0F); + + /* left clipping */ + if (*destX < buffer->_Xmin) { + unpack->SkipPixels += (buffer->_Xmin - *destX); + *width -= (buffer->_Xmin - *destX); + *destX = buffer->_Xmin; + } + /* right clipping */ + if (*destX + *width > buffer->_Xmax) + *width -= (*destX + *width - buffer->_Xmax); + + if (*width <= 0) + return GL_FALSE; + + if (ctx->Pixel.ZoomY == 1.0F) { + /* bottom clipping */ + if (*destY < buffer->_Ymin) { + unpack->SkipRows += (buffer->_Ymin - *destY); + *height -= (buffer->_Ymin - *destY); + *destY = buffer->_Ymin; + } + /* top clipping */ + if (*destY + *height > buffer->_Ymax) + *height -= (*destY + *height - buffer->_Ymax); + } + else { /* upside down */ + /* top clipping */ + if (*destY > buffer->_Ymax) { + unpack->SkipRows += (*destY - buffer->_Ymax); + *height -= (*destY - buffer->_Ymax); + *destY = buffer->_Ymax; + } + /* bottom clipping */ + if (*destY - *height < buffer->_Ymin) + *height -= (buffer->_Ymin - (*destY - *height)); + /* adjust destY so it's the first row to write to */ + (*destY)--; + } + + if (*height <= 0) + return GL_FALSE; + + return GL_TRUE; +} + + +/** + * Perform clipping for glReadPixels. The image's window position + * and size, and the pack skipPixels, skipRows and rowLength are adjusted + * so that the image region is entirely within the window bounds. + * Note: this is different from _mesa_clip_drawpixels() in that the + * scissor box is ignored, and we use the bounds of the current readbuffer + * surface. + * + * \return GL_TRUE if region to read is in bounds + * GL_FALSE if region is completely out of bounds (nothing to read) + */ +GLboolean +_mesa_clip_readpixels(const struct gl_context *ctx, + GLint *srcX, GLint *srcY, + GLsizei *width, GLsizei *height, + struct gl_pixelstore_attrib *pack) +{ + const struct gl_framebuffer *buffer = ctx->ReadBuffer; + + if (pack->RowLength == 0) { + pack->RowLength = *width; + } + + /* left clipping */ + if (*srcX < 0) { + pack->SkipPixels += (0 - *srcX); + *width -= (0 - *srcX); + *srcX = 0; + } + /* right clipping */ + if (*srcX + *width > (GLsizei) buffer->Width) + *width -= (*srcX + *width - buffer->Width); + + if (*width <= 0) + return GL_FALSE; + + /* bottom clipping */ + if (*srcY < 0) { + pack->SkipRows += (0 - *srcY); + *height -= (0 - *srcY); + *srcY = 0; + } + /* top clipping */ + if (*srcY + *height > (GLsizei) buffer->Height) + *height -= (*srcY + *height - buffer->Height); + + if (*height <= 0) + return GL_FALSE; + + return GL_TRUE; +} + + +/** + * Do clipping for a glCopyTexSubImage call. + * The framebuffer source region might extend outside the framebuffer + * bounds. Clip the source region against the framebuffer bounds and + * adjust the texture/dest position and size accordingly. + * + * \return GL_FALSE if region is totally clipped, GL_TRUE otherwise. + */ +GLboolean +_mesa_clip_copytexsubimage(const struct gl_context *ctx, + GLint *destX, GLint *destY, + GLint *srcX, GLint *srcY, + GLsizei *width, GLsizei *height) +{ + const struct gl_framebuffer *fb = ctx->ReadBuffer; + const GLint srcX0 = *srcX, srcY0 = *srcY; + + if (_mesa_clip_to_region(0, 0, fb->Width, fb->Height, + srcX, srcY, width, height)) { + *destX = *destX + *srcX - srcX0; + *destY = *destY + *srcY - srcY0; + + return GL_TRUE; + } + else { + return GL_FALSE; + } +} + + + +/** + * Clip the rectangle defined by (x, y, width, height) against the bounds + * specified by [xmin, xmax) and [ymin, ymax). + * \return GL_FALSE if rect is totally clipped, GL_TRUE otherwise. + */ +GLboolean +_mesa_clip_to_region(GLint xmin, GLint ymin, + GLint xmax, GLint ymax, + GLint *x, GLint *y, + GLsizei *width, GLsizei *height ) +{ + /* left clipping */ + if (*x < xmin) { + *width -= (xmin - *x); + *x = xmin; + } + + /* right clipping */ + if (*x + *width > xmax) + *width -= (*x + *width - xmax); + + if (*width <= 0) + return GL_FALSE; + + /* bottom (or top) clipping */ + if (*y < ymin) { + *height -= (ymin - *y); + *y = ymin; + } + + /* top (or bottom) clipping */ + if (*y + *height > ymax) + *height -= (*y + *height - ymax); + + if (*height <= 0) + return GL_FALSE; + + return GL_TRUE; +} + + +/** + * Clip dst coords against Xmax (or Ymax). + */ +static INLINE void +clip_right_or_top(GLint *srcX0, GLint *srcX1, + GLint *dstX0, GLint *dstX1, + GLint maxValue) +{ + GLfloat t, bias; + + if (*dstX1 > maxValue) { + /* X1 outside right edge */ + ASSERT(*dstX0 < maxValue); /* X0 should be inside right edge */ + t = (GLfloat) (maxValue - *dstX0) / (GLfloat) (*dstX1 - *dstX0); + /* chop off [t, 1] part */ + ASSERT(t >= 0.0 && t <= 1.0); + *dstX1 = maxValue; + bias = (*srcX0 < *srcX1) ? 0.5F : -0.5F; + *srcX1 = *srcX0 + (GLint) (t * (*srcX1 - *srcX0) + bias); + } + else if (*dstX0 > maxValue) { + /* X0 outside right edge */ + ASSERT(*dstX1 < maxValue); /* X1 should be inside right edge */ + t = (GLfloat) (maxValue - *dstX1) / (GLfloat) (*dstX0 - *dstX1); + /* chop off [t, 1] part */ + ASSERT(t >= 0.0 && t <= 1.0); + *dstX0 = maxValue; + bias = (*srcX0 < *srcX1) ? -0.5F : 0.5F; + *srcX0 = *srcX1 + (GLint) (t * (*srcX0 - *srcX1) + bias); + } +} + + +/** + * Clip dst coords against Xmin (or Ymin). + */ +static INLINE void +clip_left_or_bottom(GLint *srcX0, GLint *srcX1, + GLint *dstX0, GLint *dstX1, + GLint minValue) +{ + GLfloat t, bias; + + if (*dstX0 < minValue) { + /* X0 outside left edge */ + ASSERT(*dstX1 > minValue); /* X1 should be inside left edge */ + t = (GLfloat) (minValue - *dstX0) / (GLfloat) (*dstX1 - *dstX0); + /* chop off [0, t] part */ + ASSERT(t >= 0.0 && t <= 1.0); + *dstX0 = minValue; + bias = (*srcX0 < *srcX1) ? 0.5F : -0.5F; /* flipped??? */ + *srcX0 = *srcX0 + (GLint) (t * (*srcX1 - *srcX0) + bias); + } + else if (*dstX1 < minValue) { + /* X1 outside left edge */ + ASSERT(*dstX0 > minValue); /* X0 should be inside left edge */ + t = (GLfloat) (minValue - *dstX1) / (GLfloat) (*dstX0 - *dstX1); + /* chop off [0, t] part */ + ASSERT(t >= 0.0 && t <= 1.0); + *dstX1 = minValue; + bias = (*srcX0 < *srcX1) ? 0.5F : -0.5F; + *srcX1 = *srcX1 + (GLint) (t * (*srcX0 - *srcX1) + bias); + } +} + + +/** + * Do clipping of blit src/dest rectangles. + * The dest rect is clipped against both the buffer bounds and scissor bounds. + * The src rect is just clipped against the buffer bounds. + * + * When either the src or dest rect is clipped, the other is also clipped + * proportionately! + * + * Note that X0 need not be less than X1 (same for Y) for either the source + * and dest rects. That makes the clipping a little trickier. + * + * \return GL_TRUE if anything is left to draw, GL_FALSE if totally clipped + */ +GLboolean +_mesa_clip_blit(struct gl_context *ctx, + GLint *srcX0, GLint *srcY0, GLint *srcX1, GLint *srcY1, + GLint *dstX0, GLint *dstY0, GLint *dstX1, GLint *dstY1) +{ + const GLint srcXmin = 0; + const GLint srcXmax = ctx->ReadBuffer->Width; + const GLint srcYmin = 0; + const GLint srcYmax = ctx->ReadBuffer->Height; + + /* these include scissor bounds */ + const GLint dstXmin = ctx->DrawBuffer->_Xmin; + const GLint dstXmax = ctx->DrawBuffer->_Xmax; + const GLint dstYmin = ctx->DrawBuffer->_Ymin; + const GLint dstYmax = ctx->DrawBuffer->_Ymax; + + /* + printf("PreClipX: src: %d .. %d dst: %d .. %d\n", + *srcX0, *srcX1, *dstX0, *dstX1); + printf("PreClipY: src: %d .. %d dst: %d .. %d\n", + *srcY0, *srcY1, *dstY0, *dstY1); + */ + + /* trivial rejection tests */ + if (*dstX0 == *dstX1) + return GL_FALSE; /* no width */ + if (*dstX0 <= dstXmin && *dstX1 <= dstXmin) + return GL_FALSE; /* totally out (left) of bounds */ + if (*dstX0 >= dstXmax && *dstX1 >= dstXmax) + return GL_FALSE; /* totally out (right) of bounds */ + + if (*dstY0 == *dstY1) + return GL_FALSE; + if (*dstY0 <= dstYmin && *dstY1 <= dstYmin) + return GL_FALSE; + if (*dstY0 >= dstYmax && *dstY1 >= dstYmax) + return GL_FALSE; + + if (*srcX0 == *srcX1) + return GL_FALSE; + if (*srcX0 <= srcXmin && *srcX1 <= srcXmin) + return GL_FALSE; + if (*srcX0 >= srcXmax && *srcX1 >= srcXmax) + return GL_FALSE; + + if (*srcY0 == *srcY1) + return GL_FALSE; + if (*srcY0 <= srcYmin && *srcY1 <= srcYmin) + return GL_FALSE; + if (*srcY0 >= srcYmax && *srcY1 >= srcYmax) + return GL_FALSE; + + /* + * dest clip + */ + clip_right_or_top(srcX0, srcX1, dstX0, dstX1, dstXmax); + clip_right_or_top(srcY0, srcY1, dstY0, dstY1, dstYmax); + clip_left_or_bottom(srcX0, srcX1, dstX0, dstX1, dstXmin); + clip_left_or_bottom(srcY0, srcY1, dstY0, dstY1, dstYmin); + + /* + * src clip (just swap src/dst values from above) + */ + clip_right_or_top(dstX0, dstX1, srcX0, srcX1, srcXmax); + clip_right_or_top(dstY0, dstY1, srcY0, srcY1, srcYmax); + clip_left_or_bottom(dstX0, dstX1, srcX0, srcX1, srcXmin); + clip_left_or_bottom(dstY0, dstY1, srcY0, srcY1, srcYmin); + + /* + printf("PostClipX: src: %d .. %d dst: %d .. %d\n", + *srcX0, *srcX1, *dstX0, *dstX1); + printf("PostClipY: src: %d .. %d dst: %d .. %d\n", + *srcY0, *srcY1, *dstY0, *dstY1); + */ + + ASSERT(*dstX0 >= dstXmin); + ASSERT(*dstX0 <= dstXmax); + ASSERT(*dstX1 >= dstXmin); + ASSERT(*dstX1 <= dstXmax); + + ASSERT(*dstY0 >= dstYmin); + ASSERT(*dstY0 <= dstYmax); + ASSERT(*dstY1 >= dstYmin); + ASSERT(*dstY1 <= dstYmax); + + ASSERT(*srcX0 >= srcXmin); + ASSERT(*srcX0 <= srcXmax); + ASSERT(*srcX1 >= srcXmin); + ASSERT(*srcX1 <= srcXmax); + + ASSERT(*srcY0 >= srcYmin); + ASSERT(*srcY0 <= srcYmax); + ASSERT(*srcY1 >= srcYmin); + ASSERT(*srcY1 <= srcYmax); + + return GL_TRUE; +} diff --git a/mesalib/src/mesa/main/mipmap.c b/mesalib/src/mesa/main/mipmap.c index 0727e1818..e594160ad 100644 --- a/mesalib/src/mesa/main/mipmap.c +++ b/mesalib/src/mesa/main/mipmap.c @@ -1764,8 +1764,13 @@ _mesa_generate_mipmap(struct gl_context *ctx, GLenum target, } else if (srcImage->_BaseFormat == GL_RGBA) { convertFormat = MESA_FORMAT_RGBA8888; components = 4; - } - else { + } else if (srcImage->_BaseFormat == GL_LUMINANCE) { + convertFormat = MESA_FORMAT_L8; + components = 1; + } else if (srcImage->_BaseFormat == GL_LUMINANCE_ALPHA) { + convertFormat = MESA_FORMAT_AL88; + components = 2; + } else { _mesa_problem(ctx, "bad srcImage->_BaseFormat in _mesa_generate_mipmaps"); return; } diff --git a/mesalib/src/mesa/main/mtypes.h b/mesalib/src/mesa/main/mtypes.h index 49ecea59d..695d93652 100644 --- a/mesalib/src/mesa/main/mtypes.h +++ b/mesalib/src/mesa/main/mtypes.h @@ -2802,6 +2802,7 @@ struct gl_extensions GLboolean EXT_texture_object; GLboolean EXT_texture3D; GLboolean EXT_texture_array; + GLboolean EXT_texture_compression_latc; GLboolean EXT_texture_compression_s3tc; GLboolean EXT_texture_env_add; GLboolean EXT_texture_env_combine; @@ -2827,6 +2828,7 @@ struct gl_extensions GLboolean APPLE_vertex_array_object; GLboolean APPLE_object_purgeable; GLboolean ATI_envmap_bumpmap; + GLboolean ATI_texture_compression_3dc; GLboolean ATI_texture_mirror_once; GLboolean ATI_texture_env_combine3; GLboolean ATI_fragment_shader; diff --git a/mesalib/src/mesa/main/texcompress.c b/mesalib/src/mesa/main/texcompress.c index 82d02ed0e..d820ae927 100644 --- a/mesalib/src/mesa/main/texcompress.c +++ b/mesalib/src/mesa/main/texcompress.c @@ -173,6 +173,16 @@ _mesa_glenum_to_compressed_format(GLenum format) case GL_COMPRESSED_SIGNED_RG_RGTC2: return MESA_FORMAT_SIGNED_RG_RGTC2; + case GL_COMPRESSED_LUMINANCE_LATC1_EXT: + return MESA_FORMAT_L_LATC1; + case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT: + return MESA_FORMAT_SIGNED_L_LATC1; + case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT: + case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI: + return MESA_FORMAT_LA_LATC2; + case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT: + return MESA_FORMAT_SIGNED_LA_LATC2; + default: return MESA_FORMAT_NONE; } @@ -229,6 +239,15 @@ _mesa_compressed_format_to_glenum(struct gl_context *ctx, GLuint mesaFormat) case MESA_FORMAT_SIGNED_RG_RGTC2: return GL_COMPRESSED_SIGNED_RG_RGTC2; + case MESA_FORMAT_L_LATC1: + return GL_COMPRESSED_LUMINANCE_LATC1_EXT; + case MESA_FORMAT_SIGNED_L_LATC1: + return GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT; + case MESA_FORMAT_LA_LATC2: + return GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT; + case MESA_FORMAT_SIGNED_LA_LATC2: + return GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT; + default: _mesa_problem(ctx, "Unexpected mesa texture format in" " _mesa_compressed_format_to_glenum()"); diff --git a/mesalib/src/mesa/main/texcompress_rgtc.c b/mesalib/src/mesa/main/texcompress_rgtc.c index 26dca2d76..c50df19c5 100644 --- a/mesalib/src/mesa/main/texcompress_rgtc.c +++ b/mesalib/src/mesa/main/texcompress_rgtc.c @@ -98,7 +98,8 @@ _mesa_texstore_red_rgtc1(TEXSTORE_PARAMS) GLubyte srcpixels[4][4]; GLubyte *blkaddr; GLint dstRowDiff; - ASSERT(dstFormat == MESA_FORMAT_RED_RGTC1); + ASSERT(dstFormat == MESA_FORMAT_RED_RGTC1 || + dstFormat == MESA_FORMAT_L_LATC1); ASSERT(dstXoffset % 4 == 0); ASSERT(dstYoffset % 4 == 0); ASSERT(dstZoffset % 4 == 0); @@ -153,7 +154,8 @@ _mesa_texstore_signed_red_rgtc1(TEXSTORE_PARAMS) GLbyte srcpixels[4][4]; GLbyte *blkaddr; GLint dstRowDiff; - ASSERT(dstFormat == MESA_FORMAT_SIGNED_RED_RGTC1); + ASSERT(dstFormat == MESA_FORMAT_SIGNED_RED_RGTC1 || + dstFormat == MESA_FORMAT_SIGNED_L_LATC1); ASSERT(dstXoffset % 4 == 0); ASSERT(dstYoffset % 4 == 0); ASSERT(dstZoffset % 4 == 0); @@ -208,7 +210,8 @@ _mesa_texstore_rg_rgtc2(TEXSTORE_PARAMS) GLubyte *blkaddr; GLint dstRowDiff; - ASSERT(dstFormat == MESA_FORMAT_RG_RGTC2); + ASSERT(dstFormat == MESA_FORMAT_RG_RGTC2 || + dstFormat == MESA_FORMAT_LA_LATC2); ASSERT(dstXoffset % 4 == 0); ASSERT(dstYoffset % 4 == 0); ASSERT(dstZoffset % 4 == 0); @@ -269,7 +272,8 @@ _mesa_texstore_signed_rg_rgtc2(TEXSTORE_PARAMS) GLbyte *blkaddr; GLint dstRowDiff; - ASSERT(dstFormat == MESA_FORMAT_SIGNED_RG_RGTC2); + ASSERT(dstFormat == MESA_FORMAT_SIGNED_RG_RGTC2 || + dstFormat == MESA_FORMAT_SIGNED_LA_LATC2); ASSERT(dstXoffset % 4 == 0); ASSERT(dstYoffset % 4 == 0); ASSERT(dstZoffset % 4 == 0); @@ -374,6 +378,62 @@ _mesa_fetch_texel_2d_f_signed_rg_rgtc2(const struct gl_texture_image *texImage, texel[ACOMP] = 1.0; } +void +_mesa_fetch_texel_2d_f_l_latc1(const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel) +{ + GLubyte red; + unsigned_fetch_texel_rgtc(texImage->RowStride, (GLubyte *)(texImage->Data), + i, j, &red, 1); + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = UBYTE_TO_FLOAT(red); + texel[ACOMP] = 1.0; +} + +void +_mesa_fetch_texel_2d_f_signed_l_latc1(const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel) +{ + GLbyte red; + signed_fetch_texel_rgtc(texImage->RowStride, (GLbyte *)(texImage->Data), + i, j, &red, 1); + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = BYTE_TO_FLOAT_TEX(red); + texel[ACOMP] = 1.0; +} + +void +_mesa_fetch_texel_2d_f_la_latc2(const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel) +{ + GLubyte red, green; + unsigned_fetch_texel_rgtc(texImage->RowStride, (GLubyte *)(texImage->Data), + i, j, &red, 2); + unsigned_fetch_texel_rgtc(texImage->RowStride, (GLubyte *)(texImage->Data) + 8, + i, j, &green, 2); + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = UBYTE_TO_FLOAT(red); + texel[ACOMP] = UBYTE_TO_FLOAT(green); +} + +void +_mesa_fetch_texel_2d_f_signed_la_latc2(const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel) +{ + GLbyte red, green; + signed_fetch_texel_rgtc(texImage->RowStride, (GLbyte *)(texImage->Data), + i, j, &red, 2); + signed_fetch_texel_rgtc(texImage->RowStride, (GLbyte *)(texImage->Data) + 8, + i, j, &green, 2); + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = BYTE_TO_FLOAT_TEX(red); + texel[ACOMP] = BYTE_TO_FLOAT_TEX(green); +} + #define TAG(x) unsigned_##x #define TYPE GLubyte diff --git a/mesalib/src/mesa/main/texcompress_rgtc.h b/mesalib/src/mesa/main/texcompress_rgtc.h index 424edc458..18766770d 100644 --- a/mesalib/src/mesa/main/texcompress_rgtc.h +++ b/mesalib/src/mesa/main/texcompress_rgtc.h @@ -57,4 +57,21 @@ _mesa_fetch_texel_2d_f_rg_rgtc2(const struct gl_texture_image *texImage, extern void _mesa_fetch_texel_2d_f_signed_rg_rgtc2(const struct gl_texture_image *texImage, GLint i, GLint j, GLint k, GLfloat *texel); + +extern void +_mesa_fetch_texel_2d_f_l_latc1(const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel); + +extern void +_mesa_fetch_texel_2d_f_signed_l_latc1(const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel); + +extern void +_mesa_fetch_texel_2d_f_la_latc2(const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel); + +extern void +_mesa_fetch_texel_2d_f_signed_la_latc2(const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel); + #endif diff --git a/mesalib/src/mesa/main/texfetch.c b/mesalib/src/mesa/main/texfetch.c index 550597e1c..988a7e054 100644 --- a/mesalib/src/mesa/main/texfetch.c +++ b/mesalib/src/mesa/main/texfetch.c @@ -786,6 +786,34 @@ texfetch_funcs[MESA_FORMAT_COUNT] = NULL, NULL }, + { + MESA_FORMAT_L_LATC1, + NULL, + _mesa_fetch_texel_2d_f_l_latc1, + NULL, + NULL + }, + { + MESA_FORMAT_SIGNED_L_LATC1, + NULL, + _mesa_fetch_texel_2d_f_signed_l_latc1, + NULL, + NULL + }, + { + MESA_FORMAT_LA_LATC2, + NULL, + _mesa_fetch_texel_2d_f_la_latc2, + NULL, + NULL + }, + { + MESA_FORMAT_SIGNED_LA_LATC2, + NULL, + _mesa_fetch_texel_2d_f_signed_la_latc2, + NULL, + NULL + }, }; diff --git a/mesalib/src/mesa/main/texformat.c b/mesalib/src/mesa/main/texformat.c index 72025cf82..5eabf2aa5 100644 --- a/mesalib/src/mesa/main/texformat.c +++ b/mesalib/src/mesa/main/texformat.c @@ -621,6 +621,35 @@ _mesa_choose_tex_format( struct gl_context *ctx, GLint internalFormat, } } + if (ctx->Extensions.EXT_texture_compression_latc) { + switch (internalFormat) { + case GL_COMPRESSED_LUMINANCE_LATC1_EXT: + RETURN_IF_SUPPORTED(MESA_FORMAT_L_LATC1); + break; + case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT: + RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_L_LATC1); + break; + case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT: + RETURN_IF_SUPPORTED(MESA_FORMAT_LA_LATC2); + break; + case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT: + RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_LA_LATC2); + break; + default: + ; /* fallthrough */ + } + } + + if (ctx->Extensions.ATI_texture_compression_3dc) { + switch (internalFormat) { + case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI: + RETURN_IF_SUPPORTED(MESA_FORMAT_LA_LATC2); + break; + default: + ; /* fallthrough */ + } + } + _mesa_problem(ctx, "unexpected format in _mesa_choose_tex_format()"); return MESA_FORMAT_NONE; } diff --git a/mesalib/src/mesa/main/teximage.c b/mesalib/src/mesa/main/teximage.c index d4ae6dd69..2a3037f61 100644 --- a/mesalib/src/mesa/main/teximage.c +++ b/mesalib/src/mesa/main/teximage.c @@ -509,6 +509,28 @@ _mesa_base_tex_format( struct gl_context *ctx, GLint internalFormat ) } } + if (ctx->Extensions.EXT_texture_compression_latc) { + switch (internalFormat) { + case GL_COMPRESSED_LUMINANCE_LATC1_EXT: + case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT: + return GL_LUMINANCE; + case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT: + case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT: + return GL_LUMINANCE_ALPHA; + default: + ; /* fallthrough */ + } + } + + if (ctx->Extensions.ATI_texture_compression_3dc) { + switch (internalFormat) { + case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI: + return GL_LUMINANCE_ALPHA; + default: + ; /* fallthrough */ + } + } + return -1; /* error */ } diff --git a/mesalib/src/mesa/main/texstore.c b/mesalib/src/mesa/main/texstore.c index cd30fa021..760cdfa85 100644 --- a/mesalib/src/mesa/main/texstore.c +++ b/mesalib/src/mesa/main/texstore.c @@ -4135,7 +4135,14 @@ texstore_funcs[MESA_FORMAT_COUNT] = { MESA_FORMAT_RED_RGTC1, _mesa_texstore_red_rgtc1 }, { MESA_FORMAT_SIGNED_RED_RGTC1, _mesa_texstore_signed_red_rgtc1 }, { MESA_FORMAT_RG_RGTC2, _mesa_texstore_rg_rgtc2 }, - { MESA_FORMAT_SIGNED_RG_RGTC2, _mesa_texstore_signed_rg_rgtc2 } + { MESA_FORMAT_SIGNED_RG_RGTC2, _mesa_texstore_signed_rg_rgtc2 }, + + /* Re-use the R/RG texstore functions. + * The code is generic enough to handle LATC too. */ + { MESA_FORMAT_L_LATC1, _mesa_texstore_red_rgtc1 }, + { MESA_FORMAT_SIGNED_L_LATC1, _mesa_texstore_signed_red_rgtc1 }, + { MESA_FORMAT_LA_LATC2, _mesa_texstore_rg_rgtc2 }, + { MESA_FORMAT_SIGNED_LA_LATC2, _mesa_texstore_signed_rg_rgtc2 } }; |