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Diffstat (limited to 'mesalib/src/mesa/main/texformat.c')
-rw-r--r--mesalib/src/mesa/main/texformat.c903
1 files changed, 468 insertions, 435 deletions
diff --git a/mesalib/src/mesa/main/texformat.c b/mesalib/src/mesa/main/texformat.c
index b9271ef58..7b0b17b25 100644
--- a/mesalib/src/mesa/main/texformat.c
+++ b/mesalib/src/mesa/main/texformat.c
@@ -1,435 +1,468 @@
-/*
- * Mesa 3-D graphics library
- * Version: 7.7
- *
- * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
- * Copyright (c) 2008-2009 VMware, Inc.
- *
- * 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 texformat.c
- * Texture formats.
- *
- * \author Gareth Hughes
- * \author Brian Paul
- */
-
-
-#include "context.h"
-#include "texcompress.h"
-#include "texformat.h"
-
-
-/**
- * Choose an appropriate texture format given the format, type and
- * internalFormat parameters passed to glTexImage().
- *
- * \param ctx the GL context.
- * \param internalFormat user's prefered internal texture format.
- * \param format incoming image pixel format.
- * \param type incoming image data type.
- *
- * \return a pointer to a gl_texture_format object which describes the
- * choosen texture format, or NULL on failure.
- *
- * This is called via dd_function_table::ChooseTextureFormat. Hardware drivers
- * will typically override this function with a specialized version.
- */
-gl_format
-_mesa_choose_tex_format( GLcontext *ctx, GLint internalFormat,
- GLenum format, GLenum type )
-{
- (void) format;
- (void) type;
-
- switch (internalFormat) {
- /* shallow RGBA formats */
- case 4:
- case GL_RGBA:
- case GL_RGBA8:
- return MESA_FORMAT_RGBA8888;
- case GL_RGB5_A1:
- return MESA_FORMAT_ARGB1555;
- case GL_RGBA2:
- return MESA_FORMAT_ARGB4444_REV; /* just to test another format*/
- case GL_RGBA4:
- return MESA_FORMAT_ARGB4444;
-
- /* deep RGBA formats */
- case GL_RGB10_A2:
- case GL_RGBA12:
- case GL_RGBA16:
- return MESA_FORMAT_RGBA_16;
-
- /* shallow RGB formats */
- case 3:
- case GL_RGB:
- case GL_RGB8:
- return MESA_FORMAT_RGB888;
- case GL_R3_G3_B2:
- return MESA_FORMAT_RGB332;
- case GL_RGB4:
- return MESA_FORMAT_RGB565_REV; /* just to test another format */
- case GL_RGB5:
- return MESA_FORMAT_RGB565;
-
- /* deep RGB formats */
- case GL_RGB10:
- case GL_RGB12:
- case GL_RGB16:
- return MESA_FORMAT_RGBA_16;
-
- /* Alpha formats */
- case GL_ALPHA:
- case GL_ALPHA4:
- case GL_ALPHA12:
- case GL_ALPHA16:
- case GL_ALPHA8:
- return MESA_FORMAT_A8;
-
- /* Luminance formats */
- case 1:
- case GL_LUMINANCE:
- case GL_LUMINANCE4:
- case GL_LUMINANCE12:
- case GL_LUMINANCE16:
- case GL_LUMINANCE8:
- return MESA_FORMAT_L8;
-
- /* Luminance/Alpha formats */
- case 2:
- case GL_LUMINANCE_ALPHA:
- case GL_LUMINANCE4_ALPHA4:
- case GL_LUMINANCE6_ALPHA2:
- case GL_LUMINANCE8_ALPHA8:
- return MESA_FORMAT_AL88;
-
- case GL_LUMINANCE12_ALPHA4:
- case GL_LUMINANCE12_ALPHA12:
- case GL_LUMINANCE16_ALPHA16:
- return MESA_FORMAT_AL1616;
-
- case GL_INTENSITY:
- case GL_INTENSITY4:
- case GL_INTENSITY12:
- case GL_INTENSITY16:
- case GL_INTENSITY8:
- return MESA_FORMAT_I8;
-
- case GL_COLOR_INDEX:
- case GL_COLOR_INDEX1_EXT:
- case GL_COLOR_INDEX2_EXT:
- case GL_COLOR_INDEX4_EXT:
- case GL_COLOR_INDEX12_EXT:
- case GL_COLOR_INDEX16_EXT:
- case GL_COLOR_INDEX8_EXT:
- return MESA_FORMAT_CI8;
-
- default:
- ; /* fallthrough */
- }
-
- if (ctx->Extensions.ARB_depth_texture) {
- switch (internalFormat) {
- case GL_DEPTH_COMPONENT:
- case GL_DEPTH_COMPONENT24:
- case GL_DEPTH_COMPONENT32:
- return MESA_FORMAT_Z32;
- case GL_DEPTH_COMPONENT16:
- return MESA_FORMAT_Z16;
- default:
- ; /* fallthrough */
- }
- }
-
- switch (internalFormat) {
- case GL_COMPRESSED_ALPHA_ARB:
- return MESA_FORMAT_A8;
- case GL_COMPRESSED_LUMINANCE_ARB:
- return MESA_FORMAT_L8;
- case GL_COMPRESSED_LUMINANCE_ALPHA_ARB:
- return MESA_FORMAT_AL88;
- case GL_COMPRESSED_INTENSITY_ARB:
- return MESA_FORMAT_I8;
- case GL_COMPRESSED_RGB_ARB:
- if (ctx->Extensions.EXT_texture_compression_s3tc ||
- ctx->Extensions.S3_s3tc)
- return MESA_FORMAT_RGB_DXT1;
- if (ctx->Extensions.TDFX_texture_compression_FXT1)
- return MESA_FORMAT_RGB_FXT1;
- return MESA_FORMAT_RGB888;
- case GL_COMPRESSED_RGBA_ARB:
- if (ctx->Extensions.EXT_texture_compression_s3tc ||
- ctx->Extensions.S3_s3tc)
- return MESA_FORMAT_RGBA_DXT3; /* Not rgba_dxt1, see spec */
- if (ctx->Extensions.TDFX_texture_compression_FXT1)
- return MESA_FORMAT_RGBA_FXT1;
- return MESA_FORMAT_RGBA8888;
- default:
- ; /* fallthrough */
- }
-
- if (ctx->Extensions.MESA_ycbcr_texture) {
- if (internalFormat == GL_YCBCR_MESA) {
- if (type == GL_UNSIGNED_SHORT_8_8_MESA)
- return MESA_FORMAT_YCBCR;
- else
- return MESA_FORMAT_YCBCR_REV;
- }
- }
-
-#if FEATURE_texture_fxt1
- if (ctx->Extensions.TDFX_texture_compression_FXT1) {
- switch (internalFormat) {
- case GL_COMPRESSED_RGB_FXT1_3DFX:
- return MESA_FORMAT_RGB_FXT1;
- case GL_COMPRESSED_RGBA_FXT1_3DFX:
- return MESA_FORMAT_RGBA_FXT1;
- default:
- ; /* fallthrough */
- }
- }
-#endif
-
-#if FEATURE_texture_s3tc
- if (ctx->Extensions.EXT_texture_compression_s3tc) {
- switch (internalFormat) {
- case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
- return MESA_FORMAT_RGB_DXT1;
- case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
- return MESA_FORMAT_RGBA_DXT1;
- case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
- return MESA_FORMAT_RGBA_DXT3;
- case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
- return MESA_FORMAT_RGBA_DXT5;
- default:
- ; /* fallthrough */
- }
- }
-
- if (ctx->Extensions.S3_s3tc) {
- switch (internalFormat) {
- case GL_RGB_S3TC:
- case GL_RGB4_S3TC:
- return MESA_FORMAT_RGB_DXT1;
- case GL_RGBA_S3TC:
- case GL_RGBA4_S3TC:
- return MESA_FORMAT_RGBA_DXT3;
- default:
- ; /* fallthrough */
- }
- }
-#endif
-
- if (ctx->Extensions.ARB_texture_float) {
- switch (internalFormat) {
- case GL_ALPHA16F_ARB:
- return MESA_FORMAT_ALPHA_FLOAT16;
- case GL_ALPHA32F_ARB:
- return MESA_FORMAT_ALPHA_FLOAT32;
- case GL_LUMINANCE16F_ARB:
- return MESA_FORMAT_LUMINANCE_FLOAT16;
- case GL_LUMINANCE32F_ARB:
- return MESA_FORMAT_LUMINANCE_FLOAT32;
- case GL_LUMINANCE_ALPHA16F_ARB:
- return MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16;
- case GL_LUMINANCE_ALPHA32F_ARB:
- return MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32;
- case GL_INTENSITY16F_ARB:
- return MESA_FORMAT_INTENSITY_FLOAT16;
- case GL_INTENSITY32F_ARB:
- return MESA_FORMAT_INTENSITY_FLOAT32;
- case GL_RGB16F_ARB:
- return MESA_FORMAT_RGB_FLOAT16;
- case GL_RGB32F_ARB:
- return MESA_FORMAT_RGB_FLOAT32;
- case GL_RGBA16F_ARB:
- return MESA_FORMAT_RGBA_FLOAT16;
- case GL_RGBA32F_ARB:
- return MESA_FORMAT_RGBA_FLOAT32;
- default:
- ; /* fallthrough */
- }
- }
-
- if (ctx->Extensions.EXT_packed_depth_stencil) {
- switch (internalFormat) {
- case GL_DEPTH_STENCIL_EXT:
- case GL_DEPTH24_STENCIL8_EXT:
- return MESA_FORMAT_Z24_S8;
- default:
- ; /* fallthrough */
- }
- }
-
- if (ctx->Extensions.ATI_envmap_bumpmap) {
- switch (internalFormat) {
- case GL_DUDV_ATI:
- case GL_DU8DV8_ATI:
- return MESA_FORMAT_DUDV8;
- default:
- ; /* fallthrough */
- }
- }
-
- if (ctx->Extensions.MESA_texture_signed_rgba) {
- switch (internalFormat) {
- case GL_RGBA_SNORM:
- case GL_RGBA8_SNORM:
- return MESA_FORMAT_SIGNED_RGBA8888;
- default:
- ; /* fallthrough */
- }
- }
-
- if (ctx->VersionMajor * 10 + ctx->VersionMinor >= 31) {
- switch (internalFormat) {
- case GL_RED_SNORM:
- case GL_R8_SNORM:
- return MESA_FORMAT_SIGNED_R8;
- case GL_RG_SNORM:
- case GL_RG8_SNORM:
- return MESA_FORMAT_SIGNED_RG88;
- case GL_RGB_SNORM:
- case GL_RGB8_SNORM:
- return MESA_FORMAT_SIGNED_RGBX8888;
- case GL_RGBA_SNORM:
- case GL_RGBA8_SNORM:
- return MESA_FORMAT_SIGNED_RGBA8888;
- case GL_R16_SNORM:
- return MESA_FORMAT_SIGNED_R_16;
- case GL_RG16_SNORM:
- return MESA_FORMAT_SIGNED_RG_16;
- case GL_RGB16_SNORM:
- return MESA_FORMAT_SIGNED_RGB_16;
- case GL_RGBA16_SNORM:
- return MESA_FORMAT_SIGNED_RGBA_16;
- default:
- ; /* fall-through */
- }
- }
-
-#if FEATURE_EXT_texture_sRGB
- if (ctx->Extensions.EXT_texture_sRGB) {
- switch (internalFormat) {
- case GL_SRGB_EXT:
- case GL_SRGB8_EXT:
- return MESA_FORMAT_SRGB8;
- case GL_SRGB_ALPHA_EXT:
- case GL_SRGB8_ALPHA8_EXT:
- return MESA_FORMAT_SRGBA8;
- case GL_SLUMINANCE_EXT:
- case GL_SLUMINANCE8_EXT:
- return MESA_FORMAT_SL8;
- case GL_SLUMINANCE_ALPHA_EXT:
- case GL_SLUMINANCE8_ALPHA8_EXT:
- return MESA_FORMAT_SLA8;
- case GL_COMPRESSED_SLUMINANCE_EXT:
- return MESA_FORMAT_SL8;
- case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT:
- return MESA_FORMAT_SLA8;
- case GL_COMPRESSED_SRGB_EXT:
-#if FEATURE_texture_s3tc
- if (ctx->Extensions.EXT_texture_compression_s3tc)
- return MESA_FORMAT_SRGB_DXT1;
-#endif
- return MESA_FORMAT_SRGB8;
- case GL_COMPRESSED_SRGB_ALPHA_EXT:
-#if FEATURE_texture_s3tc
- if (ctx->Extensions.EXT_texture_compression_s3tc)
- return MESA_FORMAT_SRGBA_DXT3; /* Not srgba_dxt1, see spec */
-#endif
- return MESA_FORMAT_SRGBA8;
-#if FEATURE_texture_s3tc
- case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
- if (ctx->Extensions.EXT_texture_compression_s3tc)
- return MESA_FORMAT_SRGB_DXT1;
- break;
- case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
- if (ctx->Extensions.EXT_texture_compression_s3tc)
- return MESA_FORMAT_SRGBA_DXT1;
- break;
- case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
- if (ctx->Extensions.EXT_texture_compression_s3tc)
- return MESA_FORMAT_SRGBA_DXT3;
- break;
- case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
- if (ctx->Extensions.EXT_texture_compression_s3tc)
- return MESA_FORMAT_SRGBA_DXT5;
- break;
-#endif
- default:
- ; /* fallthrough */
- }
- }
-#endif /* FEATURE_EXT_texture_sRGB */
-
- if (ctx->Extensions.EXT_texture_integer) {
- switch (internalFormat) {
- 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:
- return MESA_FORMAT_RGBA_UINT32;
- 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:
- return MESA_FORMAT_RGBA_UINT16;
- 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:
- return MESA_FORMAT_RGBA_UINT8;
- 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:
- return MESA_FORMAT_RGBA_INT32;
- 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:
- return MESA_FORMAT_RGBA_INT16;
- 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 MESA_FORMAT_RGBA_INT8;
- }
- }
-
- _mesa_problem(ctx, "unexpected format in _mesa_choose_tex_format()");
- return MESA_FORMAT_NONE;
-}
-
+/*
+ * Mesa 3-D graphics library
+ * Version: 7.7
+ *
+ * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
+ * Copyright (c) 2008-2009 VMware, Inc.
+ *
+ * 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 texformat.c
+ * Texture formats.
+ *
+ * \author Gareth Hughes
+ * \author Brian Paul
+ */
+
+
+#include "context.h"
+#include "texcompress.h"
+#include "texformat.h"
+
+
+/**
+ * Choose an appropriate texture format given the format, type and
+ * internalFormat parameters passed to glTexImage().
+ *
+ * \param ctx the GL context.
+ * \param internalFormat user's prefered internal texture format.
+ * \param format incoming image pixel format.
+ * \param type incoming image data type.
+ *
+ * \return a pointer to a gl_texture_format object which describes the
+ * choosen texture format, or NULL on failure.
+ *
+ * This is called via dd_function_table::ChooseTextureFormat. Hardware drivers
+ * will typically override this function with a specialized version.
+ */
+gl_format
+_mesa_choose_tex_format( struct gl_context *ctx, GLint internalFormat,
+ GLenum format, GLenum type )
+{
+ (void) format;
+ (void) type;
+
+ switch (internalFormat) {
+ /* shallow RGBA formats */
+ case 4:
+ case GL_RGBA:
+ case GL_RGBA8:
+ return MESA_FORMAT_RGBA8888;
+ case GL_RGB5_A1:
+ return MESA_FORMAT_ARGB1555;
+ case GL_RGBA2:
+ return MESA_FORMAT_ARGB4444_REV; /* just to test another format*/
+ case GL_RGBA4:
+ return MESA_FORMAT_ARGB4444;
+
+ /* deep RGBA formats */
+ case GL_RGB10_A2:
+ return MESA_FORMAT_ARGB2101010;
+
+ case GL_RGBA12:
+ case GL_RGBA16:
+ return MESA_FORMAT_RGBA_16;
+
+ /* shallow RGB formats */
+ case 3:
+ case GL_RGB:
+ case GL_RGB8:
+ return MESA_FORMAT_RGB888;
+ case GL_R3_G3_B2:
+ return MESA_FORMAT_RGB332;
+ case GL_RGB4:
+ return MESA_FORMAT_RGB565_REV; /* just to test another format */
+ case GL_RGB5:
+ return MESA_FORMAT_RGB565;
+
+ /* deep RGB formats */
+ case GL_RGB10:
+ case GL_RGB12:
+ case GL_RGB16:
+ return MESA_FORMAT_RGBA_16;
+
+ /* Alpha formats */
+ case GL_ALPHA:
+ case GL_ALPHA4:
+ case GL_ALPHA8:
+ return MESA_FORMAT_A8;
+
+ case GL_ALPHA12:
+ case GL_ALPHA16:
+ return MESA_FORMAT_A16;
+
+ /* Luminance formats */
+ case 1:
+ case GL_LUMINANCE:
+ case GL_LUMINANCE4:
+ case GL_LUMINANCE8:
+ return MESA_FORMAT_L8;
+
+ case GL_LUMINANCE12:
+ case GL_LUMINANCE16:
+ return MESA_FORMAT_L16;
+
+ /* Luminance/Alpha formats */
+ case GL_LUMINANCE4_ALPHA4:
+ return MESA_FORMAT_AL44;
+
+ case 2:
+ case GL_LUMINANCE_ALPHA:
+ case GL_LUMINANCE6_ALPHA2:
+ case GL_LUMINANCE8_ALPHA8:
+ return MESA_FORMAT_AL88;
+
+ case GL_LUMINANCE12_ALPHA4:
+ case GL_LUMINANCE12_ALPHA12:
+ case GL_LUMINANCE16_ALPHA16:
+ return MESA_FORMAT_AL1616;
+
+ case GL_INTENSITY:
+ case GL_INTENSITY4:
+ case GL_INTENSITY8:
+ return MESA_FORMAT_I8;
+
+ case GL_INTENSITY12:
+ case GL_INTENSITY16:
+ return MESA_FORMAT_I16;
+
+ case GL_COLOR_INDEX:
+ case GL_COLOR_INDEX1_EXT:
+ case GL_COLOR_INDEX2_EXT:
+ case GL_COLOR_INDEX4_EXT:
+ case GL_COLOR_INDEX12_EXT:
+ case GL_COLOR_INDEX16_EXT:
+ case GL_COLOR_INDEX8_EXT:
+ return MESA_FORMAT_CI8;
+
+ default:
+ ; /* fallthrough */
+ }
+
+ if (ctx->Extensions.ARB_depth_texture) {
+ switch (internalFormat) {
+ case GL_DEPTH_COMPONENT:
+ case GL_DEPTH_COMPONENT24:
+ case GL_DEPTH_COMPONENT32:
+ return MESA_FORMAT_Z32;
+ case GL_DEPTH_COMPONENT16:
+ return MESA_FORMAT_Z16;
+ default:
+ ; /* fallthrough */
+ }
+ }
+
+ switch (internalFormat) {
+ case GL_COMPRESSED_ALPHA_ARB:
+ return MESA_FORMAT_A8;
+ case GL_COMPRESSED_LUMINANCE_ARB:
+ return MESA_FORMAT_L8;
+ case GL_COMPRESSED_LUMINANCE_ALPHA_ARB:
+ return MESA_FORMAT_AL88;
+ case GL_COMPRESSED_INTENSITY_ARB:
+ return MESA_FORMAT_I8;
+ case GL_COMPRESSED_RGB_ARB:
+ if (ctx->Extensions.EXT_texture_compression_s3tc ||
+ ctx->Extensions.S3_s3tc)
+ return MESA_FORMAT_RGB_DXT1;
+ if (ctx->Extensions.TDFX_texture_compression_FXT1)
+ return MESA_FORMAT_RGB_FXT1;
+ return MESA_FORMAT_RGB888;
+ case GL_COMPRESSED_RGBA_ARB:
+ if (ctx->Extensions.EXT_texture_compression_s3tc ||
+ ctx->Extensions.S3_s3tc)
+ return MESA_FORMAT_RGBA_DXT3; /* Not rgba_dxt1, see spec */
+ if (ctx->Extensions.TDFX_texture_compression_FXT1)
+ return MESA_FORMAT_RGBA_FXT1;
+ return MESA_FORMAT_RGBA8888;
+ default:
+ ; /* fallthrough */
+ }
+
+ if (ctx->Extensions.MESA_ycbcr_texture) {
+ if (internalFormat == GL_YCBCR_MESA) {
+ if (type == GL_UNSIGNED_SHORT_8_8_MESA)
+ return MESA_FORMAT_YCBCR;
+ else
+ return MESA_FORMAT_YCBCR_REV;
+ }
+ }
+
+#if FEATURE_texture_fxt1
+ if (ctx->Extensions.TDFX_texture_compression_FXT1) {
+ switch (internalFormat) {
+ case GL_COMPRESSED_RGB_FXT1_3DFX:
+ return MESA_FORMAT_RGB_FXT1;
+ case GL_COMPRESSED_RGBA_FXT1_3DFX:
+ return MESA_FORMAT_RGBA_FXT1;
+ default:
+ ; /* fallthrough */
+ }
+ }
+#endif
+
+#if FEATURE_texture_s3tc
+ if (ctx->Extensions.EXT_texture_compression_s3tc) {
+ switch (internalFormat) {
+ case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
+ return MESA_FORMAT_RGB_DXT1;
+ case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
+ return MESA_FORMAT_RGBA_DXT1;
+ case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
+ return MESA_FORMAT_RGBA_DXT3;
+ case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
+ return MESA_FORMAT_RGBA_DXT5;
+ default:
+ ; /* fallthrough */
+ }
+ }
+
+ if (ctx->Extensions.S3_s3tc) {
+ switch (internalFormat) {
+ case GL_RGB_S3TC:
+ case GL_RGB4_S3TC:
+ return MESA_FORMAT_RGB_DXT1;
+ case GL_RGBA_S3TC:
+ case GL_RGBA4_S3TC:
+ return MESA_FORMAT_RGBA_DXT3;
+ default:
+ ; /* fallthrough */
+ }
+ }
+#endif
+
+ if (ctx->Extensions.ARB_texture_float) {
+ switch (internalFormat) {
+ case GL_ALPHA16F_ARB:
+ return MESA_FORMAT_ALPHA_FLOAT16;
+ case GL_ALPHA32F_ARB:
+ return MESA_FORMAT_ALPHA_FLOAT32;
+ case GL_LUMINANCE16F_ARB:
+ return MESA_FORMAT_LUMINANCE_FLOAT16;
+ case GL_LUMINANCE32F_ARB:
+ return MESA_FORMAT_LUMINANCE_FLOAT32;
+ case GL_LUMINANCE_ALPHA16F_ARB:
+ return MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16;
+ case GL_LUMINANCE_ALPHA32F_ARB:
+ return MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32;
+ case GL_INTENSITY16F_ARB:
+ return MESA_FORMAT_INTENSITY_FLOAT16;
+ case GL_INTENSITY32F_ARB:
+ return MESA_FORMAT_INTENSITY_FLOAT32;
+ case GL_RGB16F_ARB:
+ return MESA_FORMAT_RGB_FLOAT16;
+ case GL_RGB32F_ARB:
+ return MESA_FORMAT_RGB_FLOAT32;
+ case GL_RGBA16F_ARB:
+ return MESA_FORMAT_RGBA_FLOAT16;
+ case GL_RGBA32F_ARB:
+ return MESA_FORMAT_RGBA_FLOAT32;
+ default:
+ ; /* fallthrough */
+ }
+ }
+
+ if (ctx->Extensions.EXT_packed_depth_stencil) {
+ switch (internalFormat) {
+ case GL_DEPTH_STENCIL_EXT:
+ case GL_DEPTH24_STENCIL8_EXT:
+ return MESA_FORMAT_Z24_S8;
+ default:
+ ; /* fallthrough */
+ }
+ }
+
+ if (ctx->Extensions.ATI_envmap_bumpmap) {
+ switch (internalFormat) {
+ case GL_DUDV_ATI:
+ case GL_DU8DV8_ATI:
+ return MESA_FORMAT_DUDV8;
+ default:
+ ; /* fallthrough */
+ }
+ }
+
+ if (ctx->Extensions.MESA_texture_signed_rgba) {
+ switch (internalFormat) {
+ case GL_RGBA_SNORM:
+ case GL_RGBA8_SNORM:
+ return MESA_FORMAT_SIGNED_RGBA8888;
+ default:
+ ; /* fallthrough */
+ }
+ }
+
+ if (ctx->VersionMajor * 10 + ctx->VersionMinor >= 31) {
+ switch (internalFormat) {
+ case GL_RED_SNORM:
+ case GL_R8_SNORM:
+ return MESA_FORMAT_SIGNED_R8;
+ case GL_RG_SNORM:
+ case GL_RG8_SNORM:
+ return MESA_FORMAT_SIGNED_RG88;
+ case GL_RGB_SNORM:
+ case GL_RGB8_SNORM:
+ return MESA_FORMAT_SIGNED_RGBX8888;
+ case GL_RGBA_SNORM:
+ case GL_RGBA8_SNORM:
+ return MESA_FORMAT_SIGNED_RGBA8888;
+ case GL_R16_SNORM:
+ return MESA_FORMAT_SIGNED_R_16;
+ case GL_RG16_SNORM:
+ return MESA_FORMAT_SIGNED_RG_16;
+ case GL_RGB16_SNORM:
+ return MESA_FORMAT_SIGNED_RGB_16;
+ case GL_RGBA16_SNORM:
+ return MESA_FORMAT_SIGNED_RGBA_16;
+ default:
+ ; /* fall-through */
+ }
+ }
+
+#if FEATURE_EXT_texture_sRGB
+ if (ctx->Extensions.EXT_texture_sRGB) {
+ switch (internalFormat) {
+ case GL_SRGB_EXT:
+ case GL_SRGB8_EXT:
+ return MESA_FORMAT_SRGB8;
+ case GL_SRGB_ALPHA_EXT:
+ case GL_SRGB8_ALPHA8_EXT:
+ return MESA_FORMAT_SRGBA8;
+ case GL_SLUMINANCE_EXT:
+ case GL_SLUMINANCE8_EXT:
+ return MESA_FORMAT_SL8;
+ case GL_SLUMINANCE_ALPHA_EXT:
+ case GL_SLUMINANCE8_ALPHA8_EXT:
+ return MESA_FORMAT_SLA8;
+ case GL_COMPRESSED_SLUMINANCE_EXT:
+ return MESA_FORMAT_SL8;
+ case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT:
+ return MESA_FORMAT_SLA8;
+ case GL_COMPRESSED_SRGB_EXT:
+#if FEATURE_texture_s3tc
+ if (ctx->Extensions.EXT_texture_compression_s3tc)
+ return MESA_FORMAT_SRGB_DXT1;
+#endif
+ return MESA_FORMAT_SRGB8;
+ case GL_COMPRESSED_SRGB_ALPHA_EXT:
+#if FEATURE_texture_s3tc
+ if (ctx->Extensions.EXT_texture_compression_s3tc)
+ return MESA_FORMAT_SRGBA_DXT3; /* Not srgba_dxt1, see spec */
+#endif
+ return MESA_FORMAT_SRGBA8;
+#if FEATURE_texture_s3tc
+ case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
+ if (ctx->Extensions.EXT_texture_compression_s3tc)
+ return MESA_FORMAT_SRGB_DXT1;
+ break;
+ case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
+ if (ctx->Extensions.EXT_texture_compression_s3tc)
+ return MESA_FORMAT_SRGBA_DXT1;
+ break;
+ case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
+ if (ctx->Extensions.EXT_texture_compression_s3tc)
+ return MESA_FORMAT_SRGBA_DXT3;
+ break;
+ case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
+ if (ctx->Extensions.EXT_texture_compression_s3tc)
+ return MESA_FORMAT_SRGBA_DXT5;
+ break;
+#endif
+ default:
+ ; /* fallthrough */
+ }
+ }
+#endif /* FEATURE_EXT_texture_sRGB */
+
+ if (ctx->Extensions.EXT_texture_integer) {
+ switch (internalFormat) {
+ 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:
+ return MESA_FORMAT_RGBA_UINT32;
+ 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:
+ return MESA_FORMAT_RGBA_UINT16;
+ 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:
+ return MESA_FORMAT_RGBA_UINT8;
+ 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:
+ return MESA_FORMAT_RGBA_INT32;
+ 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:
+ return MESA_FORMAT_RGBA_INT16;
+ 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 MESA_FORMAT_RGBA_INT8;
+ }
+ }
+
+ if (ctx->Extensions.ARB_texture_rg) {
+ switch (internalFormat) {
+ case GL_R8:
+ case GL_RED:
+ case GL_COMPRESSED_RED:
+ return MESA_FORMAT_R8;
+
+ case GL_R16:
+ return MESA_FORMAT_R16;
+
+ case GL_RG:
+ case GL_RG8:
+ case GL_COMPRESSED_RG:
+ return MESA_FORMAT_RG88;
+
+ case GL_RG16:
+ return MESA_FORMAT_RG1616;
+
+ default:
+ ; /* fallthrough */
+ }
+ }
+
+ _mesa_problem(ctx, "unexpected format in _mesa_choose_tex_format()");
+ return MESA_FORMAT_NONE;
+}
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 16:10:27 +0000