diff options
Diffstat (limited to 'mesalib/src/mesa/main')
| -rw-r--r-- | mesalib/src/mesa/main/compiler.h | 42 | ||||
| -rw-r--r-- | mesalib/src/mesa/main/get.c | 4 | ||||
| -rw-r--r-- | mesalib/src/mesa/main/texcompress.c | 205 | ||||
| -rw-r--r-- | mesalib/src/mesa/main/texcompress.h | 121 | ||||
| -rw-r--r-- | mesalib/src/mesa/main/texparam.c | 20 |
5 files changed, 281 insertions, 111 deletions
diff --git a/mesalib/src/mesa/main/compiler.h b/mesalib/src/mesa/main/compiler.h index 743841be4..d736fdfc5 100644 --- a/mesalib/src/mesa/main/compiler.h +++ b/mesalib/src/mesa/main/compiler.h @@ -139,26 +139,28 @@ extern "C" { /** * Function inlining */ -#if defined(__GNUC__) -# define INLINE __inline__ -#elif defined(__MSC__) -# define INLINE __inline -#elif defined(_MSC_VER) -# define INLINE __inline -#elif defined(__ICL) -# define INLINE __inline -#elif defined(__INTEL_COMPILER) -# define INLINE inline -#elif defined(__WATCOMC__) && (__WATCOMC__ >= 1100) -# define INLINE __inline -#elif defined(__SUNPRO_C) && defined(__C99FEATURES__) -# define INLINE inline -# define __inline inline -# define __inline__ inline -#elif (__STDC_VERSION__ >= 199901L) /* C99 */ -# define INLINE inline -#else -# define INLINE +#ifndef INLINE +# if defined(__GNUC__) +# define INLINE __inline__ +# elif defined(__MSC__) +# define INLINE __inline +# elif defined(_MSC_VER) +# define INLINE __inline +# elif defined(__ICL) +# define INLINE __inline +# elif defined(__INTEL_COMPILER) +# define INLINE inline +# elif defined(__WATCOMC__) && (__WATCOMC__ >= 1100) +# define INLINE __inline +# elif defined(__SUNPRO_C) && defined(__C99FEATURES__) +# define INLINE inline +# define __inline inline +# define __inline__ inline +# elif (__STDC_VERSION__ >= 199901L) /* C99 */ +# define INLINE inline +# else +# define INLINE +# endif #endif diff --git a/mesalib/src/mesa/main/get.c b/mesalib/src/mesa/main/get.c index 0492e1585..d32c68a53 100644 --- a/mesalib/src/mesa/main/get.c +++ b/mesalib/src/mesa/main/get.c @@ -1569,11 +1569,11 @@ find_custom_value(struct gl_context *ctx, const struct value_desc *d, union valu break; case GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB: - v->value_int = _mesa_get_compressed_formats(ctx, NULL, GL_FALSE); + v->value_int = _mesa_get_compressed_formats(ctx, NULL); break; case GL_COMPRESSED_TEXTURE_FORMATS_ARB: v->value_int_n.n = - _mesa_get_compressed_formats(ctx, v->value_int_n.ints, GL_FALSE); + _mesa_get_compressed_formats(ctx, v->value_int_n.ints); ASSERT(v->value_int_n.n <= 100); break; diff --git a/mesalib/src/mesa/main/texcompress.c b/mesalib/src/mesa/main/texcompress.c index d820ae927..42bd1eee5 100644 --- a/mesalib/src/mesa/main/texcompress.c +++ b/mesalib/src/mesa/main/texcompress.c @@ -40,19 +40,192 @@ /** + * Get the GL base format of a specified GL compressed texture format + * + * From page 232 of the OpenGL 3.3 (Compatiblity Profile) spec: + * + * "Compressed Internal Format Base Internal Format Type + * --------------------------- -------------------- --------- + * COMPRESSED_ALPHA ALPHA Generic + * COMPRESSED_LUMINANCE LUMINANCE Generic + * COMPRESSED_LUMINANCE_ALPHA LUMINANCE_ALPHA Generic + * COMPRESSED_INTENSITY INTENSITY Generic + * COMPRESSED_RED RED Generic + * COMPRESSED_RG RG Generic + * COMPRESSED_RGB RGB Generic + * COMPRESSED_RGBA RGBA Generic + * COMPRESSED_SRGB RGB Generic + * COMPRESSED_SRGB_ALPHA RGBA Generic + * COMPRESSED_SLUMINANCE LUMINANCE Generic + * COMPRESSED_SLUMINANCE_ALPHA LUMINANCE_ALPHA Generic + * COMPRESSED_RED_RGTC1 RED Specific + * COMPRESSED_SIGNED_RED_RGTC1 RED Specific + * COMPRESSED_RG_RGTC2 RG Specific + * COMPRESSED_SIGNED_RG_RGTC2 RG Specific" + * + * \return + * The base format of \c format if \c format is a compressed format (either + * generic or specific. Otherwise 0 is returned. + */ +GLenum +_mesa_gl_compressed_format_base_format(GLenum format) +{ + switch (format) { + case GL_COMPRESSED_RED: + case GL_COMPRESSED_RED_RGTC1: + case GL_COMPRESSED_SIGNED_RED_RGTC1: + return GL_RED; + + case GL_COMPRESSED_RG: + case GL_COMPRESSED_RG_RGTC2: + case GL_COMPRESSED_SIGNED_RG_RGTC2: + return GL_RG; + + case GL_COMPRESSED_RGB: + case GL_COMPRESSED_SRGB: + case GL_COMPRESSED_RGB_S3TC_DXT1_EXT: + case GL_COMPRESSED_RGB_FXT1_3DFX: + case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT: + return GL_RGB; + + case GL_COMPRESSED_RGBA: + case GL_COMPRESSED_SRGB_ALPHA: + case GL_COMPRESSED_RGBA_BPTC_UNORM_ARB: + case GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM_ARB: + case GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT_ARB: + case GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_ARB: + case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT: + case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT: + case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT: + case GL_COMPRESSED_RGBA_FXT1_3DFX: + 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 GL_RGBA; + + case GL_COMPRESSED_ALPHA: + return GL_ALPHA; + + case GL_COMPRESSED_LUMINANCE: + case GL_COMPRESSED_SLUMINANCE: + case GL_COMPRESSED_LUMINANCE_LATC1_EXT: + case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT: + return GL_LUMINANCE; + + case GL_COMPRESSED_LUMINANCE_ALPHA: + case GL_COMPRESSED_SLUMINANCE_ALPHA: + case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT: + case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT: + case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI: + return GL_LUMINANCE_ALPHA; + + case GL_COMPRESSED_INTENSITY: + return GL_INTENSITY; + + default: + return 0; + } +} + +/** * Return list of (and count of) all specific texture compression * formats that are supported. * + * Some formats are \b not returned by this function. The + * \c GL_COMPRESSED_TEXTURE_FORMATS query only returns formats that are + * "suitable for general-purpose usage." All texture compression extensions + * have taken this to mean either linear RGB or linear RGBA. + * + * The GL_ARB_texture_compress_rgtc spec says: + * + * "19) Should the GL_NUM_COMPRESSED_TEXTURE_FORMATS and + * GL_COMPRESSED_TEXTURE_FORMATS queries return the RGTC formats? + * + * RESOLVED: No. + * + * The OpenGL 2.1 specification says "The only values returned + * by this query [GL_COMPRESSED_TEXTURE_FORMATS"] are those + * corresponding to formats suitable for general-purpose usage. + * The renderer will not enumerate formats with restrictions that + * need to be specifically understood prior to use." + * + * Compressed textures with just red or red-green components are + * not general-purpose so should not be returned by these queries + * because they have restrictions. + * + * Applications that seek to use the RGTC formats should do so + * by looking for this extension's name in the string returned by + * glGetString(GL_EXTENSIONS) rather than + * what GL_NUM_COMPRESSED_TEXTURE_FORMATS and + * GL_COMPRESSED_TEXTURE_FORMATS return." + * + * There is nearly identical wording in the GL_EXT_texture_compression_rgtc + * spec. + * + * The GL_EXT_texture_rRGB spec says: + * + * "22) Should the new COMPRESSED_SRGB_* formats be listed in an + * implementation's GL_COMPRESSED_TEXTURE_FORMATS list? + * + * RESOLVED: No. Section 3.8.1 says formats listed by + * GL_COMPRESSED_TEXTURE_FORMATS are "suitable for general-purpose + * usage." The non-linear distribution of red, green, and + * blue for these sRGB compressed formats makes them not really + * general-purpose." + * + * The GL_EXT_texture_compression_latc spec says: + * + * "16) Should the GL_NUM_COMPRESSED_TEXTURE_FORMATS and + * GL_COMPRESSED_TEXTURE_FORMATS queries return the LATC formats? + * + * RESOLVED: No. + * + * The OpenGL 2.1 specification says "The only values returned + * by this query [GL_COMPRESSED_TEXTURE_FORMATS"] are those + * corresponding to formats suitable for general-purpose usage. + * The renderer will not enumerate formats with restrictions that + * need to be specifically understood prior to use." + * + * Historically, OpenGL implementation have advertised the RGB and + * RGBA versions of the S3TC extensions compressed format tokens + * through this mechanism. + * + * The specification is not sufficiently clear about what "suitable + * for general-purpose usage" means. Historically that seems to mean + * unsigned RGB or unsigned RGBA. The DXT1 format supporting alpha + * (GL_COMPRESSED_RGBA_S3TC_DXT1_EXT) is not exposed in the list (at + * least for NVIDIA drivers) because the alpha is always 1.0 expect + * when it is 0.0 when RGB is required to be black. NVIDIA's even + * limits itself to true linear RGB or RGBA formats, specifically + * not including EXT_texture_sRGB's sRGB S3TC compressed formats. + * + * Adding luminance and luminance-alpha texture formats (and + * certainly signed versions of luminance and luminance-alpha + * formats!) invites potential comptaibility problems with old + * applications using this mechanism since old applications are + * unlikely to expect non-RGB or non-RGBA formats to be advertised + * through this mechanism. However no specific misinteractions + * with old applications is known. + * + * Applications that seek to use the LATC formats should do so + * by looking for this extension's name in the string returned by + * glGetString(GL_EXTENSIONS) rather than + * what GL_NUM_COMPRESSED_TEXTURE_FORMATS and + * GL_COMPRESSED_TEXTURE_FORMATS return." + * + * There is no formal spec for GL_ATI_texture_compression_3dc. Since the + * formats added by this extension are luminance-alpha formats, it is + * reasonable to expect them to follow the same rules as + * GL_EXT_texture_compression_latc. At the very least, Catalyst 11.6 does not + * expose the 3dc formats through this mechanism. + * * \param ctx the GL context * \param formats the resulting format list (may be NULL). - * \param all if true return all formats, even those with some kind - * of restrictions/limitations (See GL_ARB_texture_compression - * spec for more info). * * \return number of formats. */ GLuint -_mesa_get_compressed_formats(struct gl_context *ctx, GLint *formats, GLboolean all) +_mesa_get_compressed_formats(struct gl_context *ctx, GLint *formats) { GLuint n = 0; if (ctx->Extensions.TDFX_texture_compression_FXT1) { @@ -64,24 +237,15 @@ _mesa_get_compressed_formats(struct gl_context *ctx, GLint *formats, GLboolean a n += 2; } } - /* don't return RGTC - ARB_texture_compression_rgtc query 19 */ + if (ctx->Extensions.EXT_texture_compression_s3tc) { if (formats) { formats[n++] = GL_COMPRESSED_RGB_S3TC_DXT1_EXT; - /* This format has some restrictions/limitations and so should - * not be returned via the GL_COMPRESSED_TEXTURE_FORMATS query. - * Specifically, all transparent pixels become black. NVIDIA - * omits this format too. - */ - if (all) - formats[n++] = GL_COMPRESSED_RGBA_S3TC_DXT1_EXT; formats[n++] = GL_COMPRESSED_RGBA_S3TC_DXT3_EXT; formats[n++] = GL_COMPRESSED_RGBA_S3TC_DXT5_EXT; } else { n += 3; - if (all) - n += 1; } } if (ctx->Extensions.S3_s3tc) { @@ -95,19 +259,6 @@ _mesa_get_compressed_formats(struct gl_context *ctx, GLint *formats, GLboolean a n += 4; } } -#if FEATURE_EXT_texture_sRGB - if (ctx->Extensions.EXT_texture_sRGB) { - if (formats) { - formats[n++] = GL_COMPRESSED_SRGB_S3TC_DXT1_EXT; - formats[n++] = GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT; - formats[n++] = GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT; - formats[n++] = GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT; - } - else { - n += 4; - } - } -#endif /* FEATURE_EXT_texture_sRGB */ return n; #if FEATURE_ES1 || FEATURE_ES2 diff --git a/mesalib/src/mesa/main/texcompress.h b/mesalib/src/mesa/main/texcompress.h index fd42f6402..375cf90c8 100644 --- a/mesalib/src/mesa/main/texcompress.h +++ b/mesalib/src/mesa/main/texcompress.h @@ -1,59 +1,62 @@ -/*
- * Mesa 3-D graphics library
- * Version: 6.5.1
- *
- * Copyright (C) 1999-2006 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.
- */
-
-#ifndef TEXCOMPRESS_H
-#define TEXCOMPRESS_H
-
-#include "formats.h"
-#include "glheader.h"
-#include "mfeatures.h"
-
-struct gl_context;
-
-#if _HAVE_FULL_GL
-
-extern GLuint
-_mesa_get_compressed_formats(struct gl_context *ctx, GLint *formats, GLboolean all);
-
-extern gl_format
-_mesa_glenum_to_compressed_format(GLenum format);
-
-extern GLenum
-_mesa_compressed_format_to_glenum(struct gl_context *ctx, GLuint mesaFormat);
-
-extern GLubyte *
-_mesa_compressed_image_address(GLint col, GLint row, GLint img,
- gl_format mesaFormat,
- GLsizei width, const GLubyte *image);
-
-#else /* _HAVE_FULL_GL */
-
-/* no-op macros */
-#define _mesa_get_compressed_formats( c, f ) 0
-#define _mesa_compressed_image_address(c, r, i, f, w, i2 ) 0
-#define _mesa_compress_teximage( c, w, h, sF, s, sRS, dF, d, drs ) ((void)0)
-
-#endif /* _HAVE_FULL_GL */
-
-#endif /* TEXCOMPRESS_H */
+/* + * Mesa 3-D graphics library + * Version: 6.5.1 + * + * Copyright (C) 1999-2006 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. + */ + +#ifndef TEXCOMPRESS_H +#define TEXCOMPRESS_H + +#include "formats.h" +#include "glheader.h" +#include "mfeatures.h" + +struct gl_context; + +#if _HAVE_FULL_GL + +extern GLenum +_mesa_gl_compressed_format_base_format(GLenum format); + +extern GLuint +_mesa_get_compressed_formats(struct gl_context *ctx, GLint *formats); + +extern gl_format +_mesa_glenum_to_compressed_format(GLenum format); + +extern GLenum +_mesa_compressed_format_to_glenum(struct gl_context *ctx, GLuint mesaFormat); + +extern GLubyte * +_mesa_compressed_image_address(GLint col, GLint row, GLint img, + gl_format mesaFormat, + GLsizei width, const GLubyte *image); + +#else /* _HAVE_FULL_GL */ + +/* no-op macros */ +#define _mesa_get_compressed_formats( c, f ) 0 +#define _mesa_compressed_image_address(c, r, i, f, w, i2 ) 0 +#define _mesa_compress_teximage( c, w, h, sF, s, sRS, dF, d, drs ) ((void)0) + +#endif /* _HAVE_FULL_GL */ + +#endif /* TEXCOMPRESS_H */ diff --git a/mesalib/src/mesa/main/texparam.c b/mesalib/src/mesa/main/texparam.c index 4b9dcb5d3..c4ec29533 100644 --- a/mesalib/src/mesa/main/texparam.c +++ b/mesalib/src/mesa/main/texparam.c @@ -915,9 +915,23 @@ _mesa_GetTexLevelParameteriv( GLenum target, GLint level, *params = _mesa_compressed_format_to_glenum(ctx, texFormat); } else { - /* return the user's requested internal format */ - *params = img->InternalFormat; - } + /* If the true internal format is not compressed but the user + * requested a generic compressed format, we have to return the + * generic base format that matches. + * + * From page 119 (page 129 of the PDF) of the OpenGL 1.3 spec: + * + * "If no specific compressed format is available, + * internalformat is instead replaced by the corresponding base + * internal format." + * + * Otherwise just return the user's requested internal format + */ + const GLenum f = + _mesa_gl_compressed_format_base_format(img->InternalFormat); + + *params = (f != 0) ? f : img->InternalFormat; + } break; case GL_TEXTURE_BORDER: *params = img->Border; |