diff options
Diffstat (limited to 'mesalib/src/mesa/main/glformats.c')
| -rw-r--r-- | mesalib/src/mesa/main/glformats.c | 1329 |
1 files changed, 1329 insertions, 0 deletions
diff --git a/mesalib/src/mesa/main/glformats.c b/mesalib/src/mesa/main/glformats.c new file mode 100644 index 000000000..4fe0ae078 --- /dev/null +++ b/mesalib/src/mesa/main/glformats.c @@ -0,0 +1,1329 @@ +/* + * Mesa 3-D graphics library + * + * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. + * Copyright (c) 2008-2009 VMware, Inc. + * Copyright (c) 2012 Intel Corporation + * + * 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 + * THE AUTHORS 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. + */ + + +#include "context.h" +#include "glformats.h" + + +/** + * \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: + case GL_UNSIGNED_INT_5_9_9_9_REV: + case GL_UNSIGNED_INT_10F_11F_11F_REV: + case GL_FLOAT_32_UNSIGNED_INT_24_8_REV: + return GL_TRUE; + } + + return GL_FALSE; +} + + +/** + * 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: + case GL_UNSIGNED_BYTE_2_3_3_REV: + case MESA_UNSIGNED_BYTE_4_4: + return sizeof(GLubyte); + 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_SHORT_8_8_MESA: + case GL_UNSIGNED_SHORT_8_8_REV_MESA: + return sizeof(GLushort); + 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_INT_24_8_EXT: + case GL_UNSIGNED_INT_5_9_9_9_REV: + case GL_UNSIGNED_INT_10F_11F_11F_REV: + return sizeof(GLuint); + case GL_FLOAT_32_UNSIGNED_INT_24_8_REV: + return 8; + 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_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: + case GL_YCBCR_MESA: + case GL_DEPTH_STENCIL_EXT: + case GL_DUDV_ATI: + case GL_DU8DV8_ATI: + case GL_RG_INTEGER: + return 2; + + case GL_RGB: + case GL_BGR: + case GL_RGB_INTEGER_EXT: + case GL_BGR_INTEGER_EXT: + return 3; + + case GL_RGBA: + case GL_BGRA: + case GL_ABGR_EXT: + case GL_RGBA_INTEGER_EXT: + case GL_BGRA_INTEGER_EXT: + return 4; + + 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; + case GL_UNSIGNED_INT_5_9_9_9_REV: + if (format == GL_RGB) + return sizeof(GLuint); + else + return -1; + case GL_UNSIGNED_INT_10F_11F_11F_REV: + if (format == GL_RGB) + return sizeof(GLuint); + else + return -1; + case GL_FLOAT_32_UNSIGNED_INT_24_8_REV: + if (format == GL_DEPTH_STENCIL) + return 8; + else + return -1; + default: + return -1; + } +} + + +/** + * Test if the given format is an integer (non-normalized) format. + */ +GLboolean +_mesa_is_enum_format_integer(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: + case GL_RG_INTEGER: + /* specific integer formats */ + case GL_RGBA32UI_EXT: + case GL_RGB32UI_EXT: + case GL_RG32UI: + case GL_R32UI: + 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_RG16UI: + case GL_R16UI: + 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_RG8UI: + case GL_R8UI: + 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_RG32I: + case GL_R32I: + 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_RG16I: + case GL_R16I: + 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_RG8I: + case GL_R8I: + case GL_ALPHA8I_EXT: + case GL_INTENSITY8I_EXT: + case GL_LUMINANCE8I_EXT: + case GL_LUMINANCE_ALPHA8I_EXT: + case GL_RGB10_A2UI: + return GL_TRUE; + default: + return GL_FALSE; + } +} + + +/** + * Test if the given type is an integer (non-normalized) format. + */ +GLboolean +_mesa_is_type_integer(GLenum type) +{ + switch (type) { + case GL_INT: + case GL_UNSIGNED_INT: + case GL_SHORT: + case GL_UNSIGNED_SHORT: + case GL_BYTE: + case GL_UNSIGNED_BYTE: + return GL_TRUE; + default: + return GL_FALSE; + } +} + + +/** + * Test if the given format or type is an integer (non-normalized) format. + */ +extern GLboolean +_mesa_is_enum_format_or_type_integer(GLenum format, GLenum type) +{ + return _mesa_is_enum_format_integer(format) || _mesa_is_type_integer(type); +} + + +GLboolean +_mesa_is_type_unsigned(GLenum type) +{ + switch (type) { + case GL_UNSIGNED_INT: + 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: + case GL_UNSIGNED_SHORT_4_4_4_4: + case GL_UNSIGNED_SHORT_5_5_5_1: + case GL_UNSIGNED_SHORT_5_6_5: + case GL_UNSIGNED_SHORT_5_6_5_REV: + case GL_UNSIGNED_SHORT_4_4_4_4_REV: + case GL_UNSIGNED_SHORT_1_5_5_5_REV: + case GL_UNSIGNED_SHORT_8_8_MESA: + case GL_UNSIGNED_SHORT_8_8_REV_MESA: + + case GL_UNSIGNED_BYTE: + case GL_UNSIGNED_BYTE_3_3_2: + case GL_UNSIGNED_BYTE_2_3_3_REV: + return GL_TRUE; + + default: + 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_RGB565: + 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: + case GL_ETC1_RGB8_OES: + /* 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_RG_INTEGER: + case GL_LUMINANCE_INTEGER_EXT: + case GL_LUMINANCE_ALPHA_INTEGER_EXT: + /* sized integer formats */ + case GL_RGBA32UI_EXT: + case GL_RGB32UI_EXT: + case GL_RG32UI: + case GL_R32UI: + 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_RG16UI: + case GL_R16UI: + 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_RG8UI: + case GL_R8UI: + 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_RG32I: + case GL_R32I: + 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_RG16I: + case GL_R16I: + 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_RG8I: + case GL_R8I: + case GL_ALPHA8I_EXT: + case GL_INTENSITY8I_EXT: + case GL_LUMINANCE8I_EXT: + case GL_LUMINANCE_ALPHA8I_EXT: + /* signed, normalized texture formats */ + case GL_RED_SNORM: + case GL_R8_SNORM: + case GL_R16_SNORM: + case GL_RG_SNORM: + case GL_RG8_SNORM: + case GL_RG16_SNORM: + case GL_RGB_SNORM: + case GL_RGB8_SNORM: + case GL_RGB16_SNORM: + case GL_RGBA_SNORM: + case GL_RGBA8_SNORM: + case GL_RGBA16_SNORM: + case GL_ALPHA_SNORM: + case GL_ALPHA8_SNORM: + case GL_ALPHA16_SNORM: + case GL_LUMINANCE_SNORM: + case GL_LUMINANCE8_SNORM: + case GL_LUMINANCE16_SNORM: + case GL_LUMINANCE_ALPHA_SNORM: + case GL_LUMINANCE8_ALPHA8_SNORM: + case GL_LUMINANCE16_ALPHA16_SNORM: + case GL_INTENSITY_SNORM: + case GL_INTENSITY8_SNORM: + case GL_INTENSITY16_SNORM: + case GL_RGB9_E5: + case GL_R11F_G11F_B10F: + case GL_RGB10_A2UI: + 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 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: + case GL_DEPTH_COMPONENT32F: + 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: + 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: + case GL_DEPTH32F_STENCIL8: + 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: + case GL_DEPTH_COMPONENT32F: + case GL_DEPTH32F_STENCIL8: + 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 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; + case GL_ETC1_RGB8_OES: + return ctx->Extensions.OES_compressed_ETC1_RGB8_texture; +#if FEATURE_ES + case GL_PALETTE4_RGB8_OES: + case GL_PALETTE4_RGBA8_OES: + case GL_PALETTE4_R5_G6_B5_OES: + case GL_PALETTE4_RGBA4_OES: + case GL_PALETTE4_RGB5_A1_OES: + case GL_PALETTE8_RGB8_OES: + case GL_PALETTE8_RGBA8_OES: + case GL_PALETTE8_R5_G6_B5_OES: + case GL_PALETTE8_RGBA4_OES: + case GL_PALETTE8_RGB5_A1_OES: + return ctx->API == API_OPENGLES; +#endif + default: + return GL_FALSE; + } +} + + +/** + * Convert various base formats to the cooresponding integer format. + */ +GLenum +_mesa_base_format_to_integer_format(GLenum format) +{ + switch(format) { + case GL_RED: + return GL_RED_INTEGER; + case GL_GREEN: + return GL_GREEN_INTEGER; + case GL_BLUE: + return GL_BLUE_INTEGER; + case GL_RG: + return GL_RG_INTEGER; + case GL_RGB: + return GL_RGB_INTEGER; + case GL_RGBA: + return GL_RGBA_INTEGER; + case GL_BGR: + return GL_BGR_INTEGER; + case GL_BGRA: + return GL_BGRA_INTEGER; + case GL_ALPHA: + return GL_ALPHA_INTEGER; + case GL_LUMINANCE: + return GL_LUMINANCE_INTEGER_EXT; + case GL_LUMINANCE_ALPHA: + return GL_LUMINANCE_ALPHA_INTEGER_EXT; + } + + return format; +} + + +/** + * Does the given base texture/renderbuffer format have the channel + * named by 'pname'? + */ +GLboolean +_mesa_base_format_has_channel(GLenum base_format, GLenum pname) +{ + switch (pname) { + case GL_TEXTURE_RED_SIZE: + case GL_TEXTURE_RED_TYPE: + case GL_RENDERBUFFER_RED_SIZE_EXT: + case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE: + if (base_format == GL_RED || + base_format == GL_RG || + base_format == GL_RGB || + base_format == GL_RGBA) { + return GL_TRUE; + } + return GL_FALSE; + case GL_TEXTURE_GREEN_SIZE: + case GL_TEXTURE_GREEN_TYPE: + case GL_RENDERBUFFER_GREEN_SIZE_EXT: + case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE: + if (base_format == GL_RG || + base_format == GL_RGB || + base_format == GL_RGBA) { + return GL_TRUE; + } + return GL_FALSE; + case GL_TEXTURE_BLUE_SIZE: + case GL_TEXTURE_BLUE_TYPE: + case GL_RENDERBUFFER_BLUE_SIZE_EXT: + case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE: + if (base_format == GL_RGB || + base_format == GL_RGBA) { + return GL_TRUE; + } + return GL_FALSE; + case GL_TEXTURE_ALPHA_SIZE: + case GL_TEXTURE_ALPHA_TYPE: + case GL_RENDERBUFFER_ALPHA_SIZE_EXT: + case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE: + if (base_format == GL_RGBA || + base_format == GL_ALPHA || + base_format == GL_LUMINANCE_ALPHA) { + return GL_TRUE; + } + return GL_FALSE; + case GL_TEXTURE_LUMINANCE_SIZE: + case GL_TEXTURE_LUMINANCE_TYPE: + if (base_format == GL_LUMINANCE || + base_format == GL_LUMINANCE_ALPHA) { + return GL_TRUE; + } + return GL_FALSE; + case GL_TEXTURE_INTENSITY_SIZE: + case GL_TEXTURE_INTENSITY_TYPE: + if (base_format == GL_INTENSITY) { + return GL_TRUE; + } + return GL_FALSE; + case GL_TEXTURE_DEPTH_SIZE: + case GL_TEXTURE_DEPTH_TYPE: + case GL_RENDERBUFFER_DEPTH_SIZE_EXT: + case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE: + if (base_format == GL_DEPTH_STENCIL || + base_format == GL_DEPTH_COMPONENT) { + return GL_TRUE; + } + return GL_FALSE; + case GL_RENDERBUFFER_STENCIL_SIZE_EXT: + case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE: + if (base_format == GL_DEPTH_STENCIL || + base_format == GL_STENCIL_INDEX) { + return GL_TRUE; + } + return GL_FALSE; + default: + _mesa_warning(NULL, "%s: Unexpected channel token 0x%x\n", + __FUNCTION__, pname); + return GL_FALSE; + } + + return GL_FALSE; +} + + +/** + * Do error checking of format/type combinations for glReadPixels, + * glDrawPixels and glTex[Sub]Image. Note that depending on the format + * and type values, we may either generate GL_INVALID_OPERATION or + * GL_INVALID_ENUM. + * + * \param format pixel format. + * \param type pixel type. + * + * \return GL_INVALID_ENUM, GL_INVALID_OPERATION or GL_NO_ERROR + */ +GLenum +_mesa_error_check_format_and_type(const struct gl_context *ctx, + GLenum format, GLenum type) +{ + /* special type-based checks (see glReadPixels, glDrawPixels error lists) */ + switch (type) { + case GL_BITMAP: + if (format != GL_COLOR_INDEX && format != GL_STENCIL_INDEX) { + return GL_INVALID_ENUM; + } + break; + + 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: + if (format == GL_RGB) { + break; /* OK */ + } + if (format == GL_RGB_INTEGER_EXT && + ctx->Extensions.ARB_texture_rgb10_a2ui) { + break; /* OK */ + } + return GL_INVALID_OPERATION; + + 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: + if (format == GL_RGBA || + format == GL_BGRA || + format == GL_ABGR_EXT) { + break; /* OK */ + } + if ((format == GL_RGBA_INTEGER_EXT || format == GL_BGRA_INTEGER_EXT) && + ctx->Extensions.ARB_texture_rgb10_a2ui) { + break; /* OK */ + } + return GL_INVALID_OPERATION; + + case GL_UNSIGNED_INT_24_8: + if (!ctx->Extensions.EXT_packed_depth_stencil) { + return GL_INVALID_ENUM; + } + if (format != GL_DEPTH_STENCIL) { + return GL_INVALID_OPERATION; + } + return GL_NO_ERROR; + + case GL_FLOAT_32_UNSIGNED_INT_24_8_REV: + if (!ctx->Extensions.ARB_depth_buffer_float) { + return GL_INVALID_ENUM; + } + if (format != GL_DEPTH_STENCIL) { + return GL_INVALID_OPERATION; + } + return GL_NO_ERROR; + + case GL_UNSIGNED_INT_10F_11F_11F_REV: + if (!ctx->Extensions.EXT_packed_float) { + return GL_INVALID_ENUM; + } + if (format != GL_RGB) { + return GL_INVALID_OPERATION; + } + return GL_NO_ERROR; + + default: + ; /* fall-through */ + } + + /* now, for each format, check the type for compatibility */ + 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_NO_ERROR; + case GL_HALF_FLOAT: + return ctx->Extensions.ARB_half_float_pixel + ? GL_NO_ERROR : GL_INVALID_ENUM; + default: + return GL_INVALID_ENUM; + } + + 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_NO_ERROR; + case GL_HALF_FLOAT: + return ctx->Extensions.ARB_half_float_pixel + ? GL_NO_ERROR : GL_INVALID_ENUM; + default: + return GL_INVALID_ENUM; + } + + case GL_RG: + if (!ctx->Extensions.ARB_texture_rg) + return GL_INVALID_ENUM; + 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_NO_ERROR; + case GL_HALF_FLOAT: + return ctx->Extensions.ARB_half_float_pixel + ? GL_NO_ERROR : GL_INVALID_ENUM; + default: + return GL_INVALID_ENUM; + } + + 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_NO_ERROR; + case GL_HALF_FLOAT: + return ctx->Extensions.ARB_half_float_pixel + ? GL_NO_ERROR : GL_INVALID_ENUM; + case GL_UNSIGNED_INT_5_9_9_9_REV: + return ctx->Extensions.EXT_texture_shared_exponent + ? GL_NO_ERROR : GL_INVALID_ENUM; + case GL_UNSIGNED_INT_10F_11F_11F_REV: + return ctx->Extensions.EXT_packed_float + ? GL_NO_ERROR : GL_INVALID_ENUM; + default: + return GL_INVALID_ENUM; + } + + 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_NO_ERROR; + case GL_HALF_FLOAT: + return ctx->Extensions.ARB_half_float_pixel + ? GL_NO_ERROR : GL_INVALID_ENUM; + default: + return GL_INVALID_ENUM; + } + + 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_NO_ERROR; + case GL_HALF_FLOAT: + return ctx->Extensions.ARB_half_float_pixel + ? GL_NO_ERROR : GL_INVALID_ENUM; + default: + return GL_INVALID_ENUM; + } + + case GL_YCBCR_MESA: + if (!ctx->Extensions.MESA_ycbcr_texture) + return GL_INVALID_ENUM; + if (type == GL_UNSIGNED_SHORT_8_8_MESA || + type == GL_UNSIGNED_SHORT_8_8_REV_MESA) + return GL_NO_ERROR; + else + return GL_INVALID_OPERATION; + + case GL_DEPTH_STENCIL_EXT: + if (ctx->Extensions.EXT_packed_depth_stencil && + type == GL_UNSIGNED_INT_24_8) + return GL_NO_ERROR; + else if (ctx->Extensions.ARB_depth_buffer_float && + type == GL_FLOAT_32_UNSIGNED_INT_24_8_REV) + return GL_NO_ERROR; + else + return GL_INVALID_ENUM; + + case GL_DUDV_ATI: + case GL_DU8DV8_ATI: + if (!ctx->Extensions.ATI_envmap_bumpmap) + return GL_INVALID_ENUM; + 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_NO_ERROR; + default: + return GL_INVALID_ENUM; + } + + /* integer-valued formats */ + case GL_RED_INTEGER_EXT: + case GL_GREEN_INTEGER_EXT: + case GL_BLUE_INTEGER_EXT: + case GL_ALPHA_INTEGER_EXT: + case GL_RG_INTEGER: + 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->VersionMajor >= 3 || + ctx->Extensions.EXT_texture_integer) + ? GL_NO_ERROR : GL_INVALID_ENUM; + default: + return GL_INVALID_ENUM; + } + + 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: + return (ctx->VersionMajor >= 3 || + ctx->Extensions.EXT_texture_integer) + ? GL_NO_ERROR : GL_INVALID_ENUM; + 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.ARB_texture_rgb10_a2ui + ? GL_NO_ERROR : GL_INVALID_ENUM; + default: + return GL_INVALID_ENUM; + } + + 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->VersionMajor >= 3 || + ctx->Extensions.EXT_texture_integer) + ? GL_NO_ERROR : GL_INVALID_ENUM; + default: + return GL_INVALID_ENUM; + } + + 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: + return (ctx->VersionMajor >= 3 || + ctx->Extensions.EXT_texture_integer) + ? GL_NO_ERROR : GL_INVALID_ENUM; + 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.ARB_texture_rgb10_a2ui + ? GL_NO_ERROR : GL_INVALID_ENUM; + default: + return GL_INVALID_ENUM; + } + + 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 + ? GL_NO_ERROR : GL_INVALID_ENUM; + default: + return GL_INVALID_ENUM; + } + + default: + return GL_INVALID_ENUM; + } + return GL_NO_ERROR; +} |