/* * Mesa 3-D graphics library * Version: 6.5.1 * * Copyright (C) 1999-2006 Brian Paul All Rights Reserved. * Copyright (c) 2008 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 */ #include "colormac.h" #include "context.h" #include "texcompress.h" #include "texcompress_fxt1.h" #include "texcompress_s3tc.h" #include "texformat.h" #include "texstore.h" #if FEATURE_EXT_texture_sRGB /** * Convert an 8-bit sRGB value from non-linear space to a * linear RGB value in [0, 1]. * Implemented with a 256-entry lookup table. */ static INLINE GLfloat nonlinear_to_linear(GLubyte cs8) { static GLfloat table[256]; static GLboolean tableReady = GL_FALSE; if (!tableReady) { /* compute lookup table now */ GLuint i; for (i = 0; i < 256; i++) { const GLfloat cs = UBYTE_TO_FLOAT(i); if (cs <= 0.04045) { table[i] = cs / 12.92f; } else { table[i] = (GLfloat) _mesa_pow((cs + 0.055) / 1.055, 2.4); } } tableReady = GL_TRUE; } return table[cs8]; } #endif /* FEATURE_EXT_texture_sRGB */ /* Texel fetch routines for all supported formats */ #define DIM 1 #include "texformat_tmp.h" #define DIM 2 #include "texformat_tmp.h" #define DIM 3 #include "texformat_tmp.h" /** * Null texel fetch function. * * Have to have this so the FetchTexel function pointer is never NULL. */ static void fetch_null_texelf( const struct gl_texture_image *texImage, GLint i, GLint j, GLint k, GLfloat *texel ) { (void) texImage; (void) i; (void) j; (void) k; texel[RCOMP] = 0.0; texel[GCOMP] = 0.0; texel[BCOMP] = 0.0; texel[ACOMP] = 0.0; _mesa_warning(NULL, "fetch_null_texelf() called!"); } static void store_null_texel(struct gl_texture_image *texImage, GLint i, GLint j, GLint k, const void *texel) { (void) texImage; (void) i; (void) j; (void) k; (void) texel; /* no-op */ } /** * Notes about the predefined gl_texture_formats: * * 1. There are 1D, 2D and 3D functions for fetching texels from texture * images, returning both GLchan values and GLfloat values. (six * functions in total) * You don't have to provide both the GLchan and GLfloat functions; * just one or the other is OK. Mesa will use an "adaptor" to convert * between GLchan/GLfloat when needed. * Since the adaptors have small performance penalty, we provide both * GLchan and GLfloat functions for some common formats like RGB, RGBA. */ /***************************************************************/ /** \name Default GLchan-based formats */ /*@{*/ const struct gl_texture_format _mesa_texformat_rgba = { MESA_FORMAT_RGBA, /* MesaFormat */ GL_RGBA, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ CHAN_BITS, /* RedBits */ CHAN_BITS, /* GreenBits */ CHAN_BITS, /* BlueBits */ CHAN_BITS, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 4 * sizeof(GLchan), /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_rgb = { MESA_FORMAT_RGB, /* MesaFormat */ GL_RGB, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ CHAN_BITS, /* RedBits */ CHAN_BITS, /* GreenBits */ CHAN_BITS, /* BlueBits */ 0, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 3 * sizeof(GLchan), /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_alpha = { MESA_FORMAT_ALPHA, /* MesaFormat */ GL_ALPHA, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 0, /* RedBits */ 0, /* GreenBits */ 0, /* BlueBits */ CHAN_BITS, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ sizeof(GLchan), /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_luminance = { MESA_FORMAT_LUMINANCE, /* MesaFormat */ GL_LUMINANCE, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 0, /* RedBits */ 0, /* GreenBits */ 0, /* BlueBits */ 0, /* AlphaBits */ CHAN_BITS, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ sizeof(GLchan), /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_luminance_alpha = { MESA_FORMAT_LUMINANCE_ALPHA, /* MesaFormat */ GL_LUMINANCE_ALPHA, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 0, /* RedBits */ 0, /* GreenBits */ 0, /* BlueBits */ CHAN_BITS, /* AlphaBits */ CHAN_BITS, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 2 * sizeof(GLchan), /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_intensity = { MESA_FORMAT_INTENSITY, /* MesaFormat */ GL_INTENSITY, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 0, /* RedBits */ 0, /* GreenBits */ 0, /* BlueBits */ 0, /* AlphaBits */ 0, /* LuminanceBits */ CHAN_BITS, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ sizeof(GLchan), /* TexelBytes */ }; #if FEATURE_EXT_texture_sRGB const struct gl_texture_format _mesa_texformat_srgb8 = { MESA_FORMAT_SRGB8, /* MesaFormat */ GL_RGB, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 8, /* RedBits */ 8, /* GreenBits */ 8, /* BlueBits */ 0, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 3, /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_srgba8 = { MESA_FORMAT_SRGBA8, /* MesaFormat */ GL_RGBA, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 8, /* RedBits */ 8, /* GreenBits */ 8, /* BlueBits */ 8, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 4, /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_sargb8 = { MESA_FORMAT_SARGB8, /* MesaFormat */ GL_RGBA, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 8, /* RedBits */ 8, /* GreenBits */ 8, /* BlueBits */ 8, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 4, /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_sl8 = { MESA_FORMAT_SL8, /* MesaFormat */ GL_LUMINANCE, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 0, /* RedBits */ 0, /* GreenBits */ 0, /* BlueBits */ 0, /* AlphaBits */ 8, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 1, /* TexelBytes */ }; /* Note: this format name looks like a misnomer, make it sal8? */ const struct gl_texture_format _mesa_texformat_sla8 = { MESA_FORMAT_SLA8, /* MesaFormat */ GL_LUMINANCE_ALPHA, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 0, /* RedBits */ 0, /* GreenBits */ 0, /* BlueBits */ 8, /* AlphaBits */ 8, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 2, /* TexelBytes */ }; #endif /* FEATURE_EXT_texture_sRGB */ const struct gl_texture_format _mesa_texformat_rgba_float32 = { MESA_FORMAT_RGBA_FLOAT32, /* MesaFormat */ GL_RGBA, /* BaseFormat */ GL_FLOAT, /* DataType */ 8 * sizeof(GLfloat), /* RedBits */ 8 * sizeof(GLfloat), /* GreenBits */ 8 * sizeof(GLfloat), /* BlueBits */ 8 * sizeof(GLfloat), /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 4 * sizeof(GLfloat), /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_rgba_float16 = { MESA_FORMAT_RGBA_FLOAT16, /* MesaFormat */ GL_RGBA, /* BaseFormat */ GL_FLOAT, /* DataType */ 8 * sizeof(GLhalfARB), /* RedBits */ 8 * sizeof(GLhalfARB), /* GreenBits */ 8 * sizeof(GLhalfARB), /* BlueBits */ 8 * sizeof(GLhalfARB), /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 4 * sizeof(GLhalfARB), /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_rgb_float32 = { MESA_FORMAT_RGB_FLOAT32, /* MesaFormat */ GL_RGB, /* BaseFormat */ GL_FLOAT, /* DataType */ 8 * sizeof(GLfloat), /* RedBits */ 8 * sizeof(GLfloat), /* GreenBits */ 8 * sizeof(GLfloat), /* BlueBits */ 0, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 3 * sizeof(GLfloat), /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_rgb_float16 = { MESA_FORMAT_RGB_FLOAT16, /* MesaFormat */ GL_RGB, /* BaseFormat */ GL_FLOAT, /* DataType */ 8 * sizeof(GLhalfARB), /* RedBits */ 8 * sizeof(GLhalfARB), /* GreenBits */ 8 * sizeof(GLhalfARB), /* BlueBits */ 0, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 3 * sizeof(GLhalfARB), /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_alpha_float32 = { MESA_FORMAT_ALPHA_FLOAT32, /* MesaFormat */ GL_ALPHA, /* BaseFormat */ GL_FLOAT, /* DataType */ 0, /* RedBits */ 0, /* GreenBits */ 0, /* BlueBits */ 8 * sizeof(GLfloat), /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 1 * sizeof(GLfloat), /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_alpha_float16 = { MESA_FORMAT_ALPHA_FLOAT16, /* MesaFormat */ GL_ALPHA, /* BaseFormat */ GL_FLOAT, /* DataType */ 0, /* RedBits */ 0, /* GreenBits */ 0, /* BlueBits */ 8 * sizeof(GLhalfARB), /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 1 * sizeof(GLhalfARB), /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_luminance_float32 = { MESA_FORMAT_LUMINANCE_FLOAT32, /* MesaFormat */ GL_LUMINANCE, /* BaseFormat */ GL_FLOAT, /* DataType */ 0, /* RedBits */ 0, /* GreenBits */ 0, /* BlueBits */ 0, /* AlphaBits */ 8 * sizeof(GLfloat), /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 1 * sizeof(GLfloat), /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_luminance_float16 = { MESA_FORMAT_LUMINANCE_FLOAT16, /* MesaFormat */ GL_LUMINANCE, /* BaseFormat */ GL_FLOAT, /* DataType */ 0, /* RedBits */ 0, /* GreenBits */ 0, /* BlueBits */ 0, /* AlphaBits */ 8 * sizeof(GLhalfARB), /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 1 * sizeof(GLhalfARB), /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_luminance_alpha_float32 = { MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32, /* MesaFormat */ GL_LUMINANCE_ALPHA, /* BaseFormat */ GL_FLOAT, /* DataType */ 0, /* RedBits */ 0, /* GreenBits */ 0, /* BlueBits */ 8 * sizeof(GLfloat), /* AlphaBits */ 8 * sizeof(GLfloat), /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 2 * sizeof(GLfloat), /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_luminance_alpha_float16 = { MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16, /* MesaFormat */ GL_LUMINANCE_ALPHA, /* BaseFormat */ GL_FLOAT, /* DataType */ 0, /* RedBits */ 0, /* GreenBits */ 0, /* BlueBits */ 8 * sizeof(GLhalfARB), /* AlphaBits */ 8 * sizeof(GLhalfARB), /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 2 * sizeof(GLhalfARB), /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_intensity_float32 = { MESA_FORMAT_INTENSITY_FLOAT32, /* MesaFormat */ GL_INTENSITY, /* BaseFormat */ GL_FLOAT, /* DataType */ 0, /* RedBits */ 0, /* GreenBits */ 0, /* BlueBits */ 0, /* AlphaBits */ 0, /* LuminanceBits */ 8 * sizeof(GLfloat), /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 1 * sizeof(GLfloat), /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_intensity_float16 = { MESA_FORMAT_INTENSITY_FLOAT16, /* MesaFormat */ GL_INTENSITY, /* BaseFormat */ GL_FLOAT, /* DataType */ 0, /* RedBits */ 0, /* GreenBits */ 0, /* BlueBits */ 0, /* AlphaBits */ 0, /* LuminanceBits */ 8 * sizeof(GLhalfARB), /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 1 * sizeof(GLhalfARB), /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_dudv8 = { MESA_FORMAT_DUDV8, /* MesaFormat */ GL_DUDV_ATI, /* BaseFormat */ GL_SIGNED_NORMALIZED, /* DataType */ /* maybe should add dudvBits field, but spec seems to be lacking the ability to query with GetTexLevelParameter anyway */ 0, /* RedBits */ 0, /* GreenBits */ 0, /* BlueBits */ 0, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 2, /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_signed_rgba8888 = { MESA_FORMAT_SIGNED_RGBA8888, /* MesaFormat */ GL_RGBA, /* BaseFormat */ GL_SIGNED_NORMALIZED, /* DataType */ 8, /* RedBits */ 8, /* GreenBits */ 8, /* BlueBits */ 8, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 4, /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_signed_rgba8888_rev = { MESA_FORMAT_SIGNED_RGBA8888_REV, /* MesaFormat */ GL_RGBA, /* BaseFormat */ GL_SIGNED_NORMALIZED, /* DataType */ 8, /* RedBits */ 8, /* GreenBits */ 8, /* BlueBits */ 8, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 4, /* TexelBytes */ }; /*@}*/ /***************************************************************/ /** \name Hardware formats */ /*@{*/ const struct gl_texture_format _mesa_texformat_rgba8888 = { MESA_FORMAT_RGBA8888, /* MesaFormat */ GL_RGBA, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 8, /* RedBits */ 8, /* GreenBits */ 8, /* BlueBits */ 8, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 4, /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_rgba8888_rev = { MESA_FORMAT_RGBA8888_REV, /* MesaFormat */ GL_RGBA, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 8, /* RedBits */ 8, /* GreenBits */ 8, /* BlueBits */ 8, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 4, /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_argb8888 = { MESA_FORMAT_ARGB8888, /* MesaFormat */ GL_RGBA, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 8, /* RedBits */ 8, /* GreenBits */ 8, /* BlueBits */ 8, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 4, /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_argb8888_rev = { MESA_FORMAT_ARGB8888_REV, /* MesaFormat */ GL_RGBA, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 8, /* RedBits */ 8, /* GreenBits */ 8, /* BlueBits */ 8, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 4, /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_rgb888 = { MESA_FORMAT_RGB888, /* MesaFormat */ GL_RGB, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 8, /* RedBits */ 8, /* GreenBits */ 8, /* BlueBits */ 0, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 3, /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_bgr888 = { MESA_FORMAT_BGR888, /* MesaFormat */ GL_RGB, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 8, /* RedBits */ 8, /* GreenBits */ 8, /* BlueBits */ 0, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 3, /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_rgb565 = { MESA_FORMAT_RGB565, /* MesaFormat */ GL_RGB, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 5, /* RedBits */ 6, /* GreenBits */ 5, /* BlueBits */ 0, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 2, /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_rgb565_rev = { MESA_FORMAT_RGB565_REV, /* MesaFormat */ GL_RGB, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 5, /* RedBits */ 6, /* GreenBits */ 5, /* BlueBits */ 0, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 2, /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_rgba4444 = { MESA_FORMAT_RGBA4444, /* MesaFormat */ GL_RGBA, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 4, /* RedBits */ 4, /* GreenBits */ 4, /* BlueBits */ 4, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 2, /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_argb4444 = { MESA_FORMAT_ARGB4444, /* MesaFormat */ GL_RGBA, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 4, /* RedBits */ 4, /* GreenBits */ 4, /* BlueBits */ 4, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 2, /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_argb4444_rev = { MESA_FORMAT_ARGB4444_REV, /* MesaFormat */ GL_RGBA, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 4, /* RedBits */ 4, /* GreenBits */ 4, /* BlueBits */ 4, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 2, /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_rgba5551 = { MESA_FORMAT_RGBA5551, /* MesaFormat */ GL_RGBA, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 5, /* RedBits */ 5, /* GreenBits */ 5, /* BlueBits */ 1, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 2, /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_argb1555 = { MESA_FORMAT_ARGB1555, /* MesaFormat */ GL_RGBA, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 5, /* RedBits */ 5, /* GreenBits */ 5, /* BlueBits */ 1, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 2, /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_argb1555_rev = { MESA_FORMAT_ARGB1555_REV, /* MesaFormat */ GL_RGBA, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 5, /* RedBits */ 5, /* GreenBits */ 5, /* BlueBits */ 1, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 2, /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_al88 = { MESA_FORMAT_AL88, /* MesaFormat */ GL_LUMINANCE_ALPHA, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 0, /* RedBits */ 0, /* GreenBits */ 0, /* BlueBits */ 8, /* AlphaBits */ 8, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 2, /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_al88_rev = { MESA_FORMAT_AL88_REV, /* MesaFormat */ GL_LUMINANCE_ALPHA, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 0, /* RedBits */ 0, /* GreenBits */ 0, /* BlueBits */ 8, /* AlphaBits */ 8, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 2, /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_rgb332 = { MESA_FORMAT_RGB332, /* MesaFormat */ GL_RGB, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 3, /* RedBits */ 3, /* GreenBits */ 2, /* BlueBits */ 0, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 1, /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_a8 = { MESA_FORMAT_A8, /* MesaFormat */ GL_ALPHA, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 0, /* RedBits */ 0, /* GreenBits */ 0, /* BlueBits */ 8, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 1, /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_l8 = { MESA_FORMAT_L8, /* MesaFormat */ GL_LUMINANCE, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 0, /* RedBits */ 0, /* GreenBits */ 0, /* BlueBits */ 0, /* AlphaBits */ 8, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 1, /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_i8 = { MESA_FORMAT_I8, /* MesaFormat */ GL_INTENSITY, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 0, /* RedBits */ 0, /* GreenBits */ 0, /* BlueBits */ 0, /* AlphaBits */ 0, /* LuminanceBits */ 8, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 1, /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_ci8 = { MESA_FORMAT_CI8, /* MesaFormat */ GL_COLOR_INDEX, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 0, /* RedBits */ 0, /* GreenBits */ 0, /* BlueBits */ 0, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 8, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 1, /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_ycbcr = { MESA_FORMAT_YCBCR, /* MesaFormat */ GL_YCBCR_MESA, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 0, /* RedBits */ 0, /* GreenBits */ 0, /* BlueBits */ 0, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 2, /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_ycbcr_rev = { MESA_FORMAT_YCBCR_REV, /* MesaFormat */ GL_YCBCR_MESA, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 0, /* RedBits */ 0, /* GreenBits */ 0, /* BlueBits */ 0, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 2, /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_z24_s8 = { MESA_FORMAT_Z24_S8, /* MesaFormat */ GL_DEPTH_STENCIL_EXT, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 0, /* RedBits */ 0, /* GreenBits */ 0, /* BlueBits */ 0, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 24, /* DepthBits */ 8, /* StencilBits */ 4, /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_s8_z24 = { MESA_FORMAT_S8_Z24, /* MesaFormat */ GL_DEPTH_STENCIL_EXT, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 0, /* RedBits */ 0, /* GreenBits */ 0, /* BlueBits */ 0, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 24, /* DepthBits */ 8, /* StencilBits */ 4, /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_z16 = { MESA_FORMAT_Z16, /* MesaFormat */ GL_DEPTH_COMPONENT, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 0, /* RedBits */ 0, /* GreenBits */ 0, /* BlueBits */ 0, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ sizeof(GLushort) * 8, /* DepthBits */ 0, /* StencilBits */ sizeof(GLushort), /* TexelBytes */ }; const struct gl_texture_format _mesa_texformat_z32 = { MESA_FORMAT_Z32, /* MesaFormat */ GL_DEPTH_COMPONENT, /* BaseFormat */ GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ 0, /* RedBits */ 0, /* GreenBits */ 0, /* BlueBits */ 0, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ sizeof(GLuint) * 8, /* DepthBits */ 0, /* StencilBits */ sizeof(GLuint), /* TexelBytes */ }; /*@}*/ /***************************************************************/ /** \name Null format (useful for proxy textures) */ /*@{*/ const struct gl_texture_format _mesa_null_texformat = { -1, /* MesaFormat */ 0, /* BaseFormat */ GL_NONE, /* DataType */ 0, /* RedBits */ 0, /* GreenBits */ 0, /* BlueBits */ 0, /* AlphaBits */ 0, /* LuminanceBits */ 0, /* IntensityBits */ 0, /* IndexBits */ 0, /* DepthBits */ 0, /* StencilBits */ 0, /* TexelBytes */ }; /*@}*/ /** * 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. */ const struct gl_texture_format * _mesa_choose_tex_format( GLcontext *ctx, GLint internalFormat, GLenum format, GLenum type ) { (void) format; (void) type; switch (internalFormat) { /* RGBA formats */ case 4: case GL_RGBA: case GL_RGB10_A2: case GL_RGBA12: case GL_RGBA16: return &_mesa_texformat_rgba; case GL_RGBA8: return &_mesa_texformat_rgba8888; case GL_RGB5_A1: return &_mesa_texformat_argb1555; case GL_RGBA2: return &_mesa_texformat_argb4444_rev; /* just to test another format*/ case GL_RGBA4: return &_mesa_texformat_argb4444; /* RGB formats */ case 3: case GL_RGB: case GL_RGB10: case GL_RGB12: case GL_RGB16: return &_mesa_texformat_rgb; case GL_RGB8: return &_mesa_texformat_rgb888; case GL_R3_G3_B2: return &_mesa_texformat_rgb332; case GL_RGB4: return &_mesa_texformat_rgb565_rev; /* just to test another format */ case GL_RGB5: return &_mesa_texformat_rgb565; /* Alpha formats */ case GL_ALPHA: case GL_ALPHA4: case GL_ALPHA12: case GL_ALPHA16: return &_mesa_texformat_alpha; case GL_ALPHA8: return &_mesa_texformat_a8; /* Luminance formats */ case 1: case GL_LUMINANCE: case GL_LUMINANCE4: case GL_LUMINANCE12: case GL_LUMINANCE16: return &_mesa_texformat_luminance; case GL_LUMINANCE8: return &_mesa_texformat_l8; /* Luminance/Alpha formats */ case 2: case GL_LUMINANCE_ALPHA: case GL_LUMINANCE4_ALPHA4: case GL_LUMINANCE6_ALPHA2: case GL_LUMINANCE12_ALPHA4: case GL_LUMINANCE12_ALPHA12: case GL_LUMINANCE16_ALPHA16: return &_mesa_texformat_luminance_alpha; case GL_LUMINANCE8_ALPHA8: return &_mesa_texformat_al88; case GL_INTENSITY: case GL_INTENSITY4: case GL_INTENSITY12: case GL_INTENSITY16: return &_mesa_texformat_intensity; case GL_INTENSITY8: return &_mesa_texformat_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_texformat_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_texformat_z32; case GL_DEPTH_COMPONENT16: return &_mesa_texformat_z16; default: ; /* fallthrough */ } } switch (internalFormat) { case GL_COMPRESSED_ALPHA_ARB: return &_mesa_texformat_alpha; case GL_COMPRESSED_LUMINANCE_ARB: return &_mesa_texformat_luminance; case GL_COMPRESSED_LUMINANCE_ALPHA_ARB: return &_mesa_texformat_luminance_alpha; case GL_COMPRESSED_INTENSITY_ARB: return &_mesa_texformat_intensity; case GL_COMPRESSED_RGB_ARB: #if FEATURE_texture_fxt1 if (ctx->Extensions.TDFX_texture_compression_FXT1) return &_mesa_texformat_rgb_fxt1; #endif #if FEATURE_texture_s3tc if (ctx->Extensions.EXT_texture_compression_s3tc || ctx->Extensions.S3_s3tc) return &_mesa_texformat_rgb_dxt1; #endif return &_mesa_texformat_rgb; case GL_COMPRESSED_RGBA_ARB: #if FEATURE_texture_fxt1 if (ctx->Extensions.TDFX_texture_compression_FXT1) return &_mesa_texformat_rgba_fxt1; #endif #if FEATURE_texture_s3tc if (ctx->Extensions.EXT_texture_compression_s3tc || ctx->Extensions.S3_s3tc) return &_mesa_texformat_rgba_dxt3; /* Not rgba_dxt1, see spec */ #endif return &_mesa_texformat_rgba; default: ; /* fallthrough */ } if (ctx->Extensions.MESA_ycbcr_texture) { if (internalFormat == GL_YCBCR_MESA) { if (type == GL_UNSIGNED_SHORT_8_8_MESA) return &_mesa_texformat_ycbcr; else return &_mesa_texformat_ycbcr_rev; } } #if FEATURE_texture_fxt1 if (ctx->Extensions.TDFX_texture_compression_FXT1) { switch (internalFormat) { case GL_COMPRESSED_RGB_FXT1_3DFX: return &_mesa_texformat_rgb_fxt1; case GL_COMPRESSED_RGBA_FXT1_3DFX: return &_mesa_texformat_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_texformat_rgb_dxt1; case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT: return &_mesa_texformat_rgba_dxt1; case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT: return &_mesa_texformat_rgba_dxt3; case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT: return &_mesa_texformat_rgba_dxt5; default: ; /* fallthrough */ } } if (ctx->Extensions.S3_s3tc) { switch (internalFormat) { case GL_RGB_S3TC: case GL_RGB4_S3TC: return &_mesa_texformat_rgb_dxt1; case GL_RGBA_S3TC: case GL_RGBA4_S3TC: return &_mesa_texformat_rgba_dxt3; default: ; /* fallthrough */ } } #endif if (ctx->Extensions.ARB_texture_float) { switch (internalFormat) { case GL_ALPHA16F_ARB: return &_mesa_texformat_alpha_float16; case GL_ALPHA32F_ARB: return &_mesa_texformat_alpha_float32; case GL_LUMINANCE16F_ARB: return &_mesa_texformat_luminance_float16; case GL_LUMINANCE32F_ARB: return &_mesa_texformat_luminance_float32; case GL_LUMINANCE_ALPHA16F_ARB: return &_mesa_texformat_luminance_alpha_float16; case GL_LUMINANCE_ALPHA32F_ARB: return &_mesa_texformat_luminance_alpha_float32; case GL_INTENSITY16F_ARB: return &_mesa_texformat_intensity_float16; case GL_INTENSITY32F_ARB: return &_mesa_texformat_intensity_float32; case GL_RGB16F_ARB: return &_mesa_texformat_rgb_float16; case GL_RGB32F_ARB: return &_mesa_texformat_rgb_float32; case GL_RGBA16F_ARB: return &_mesa_texformat_rgba_float16; case GL_RGBA32F_ARB: return &_mesa_texformat_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_texformat_z24_s8; default: ; /* fallthrough */ } } if (ctx->Extensions.ATI_envmap_bumpmap) { switch (internalFormat) { case GL_DUDV_ATI: case GL_DU8DV8_ATI: return &_mesa_texformat_dudv8; default: ; /* fallthrough */ } } if (ctx->Extensions.MESA_texture_signed_rgba) { switch (internalFormat) { case GL_RGBA_SNORM: case GL_RGBA8_SNORM: return &_mesa_texformat_signed_rgba8888; default: ; /* fallthrough */ } } #if FEATURE_EXT_texture_sRGB if (ctx->Extensions.EXT_texture_sRGB) { switch (internalFormat) { case GL_SRGB_EXT: case GL_SRGB8_EXT: return &_mesa_texformat_srgb8; case GL_SRGB_ALPHA_EXT: case GL_SRGB8_ALPHA8_EXT: return &_mesa_texformat_srgba8; case GL_SLUMINANCE_EXT: case GL_SLUMINANCE8_EXT: return &_mesa_texformat_sl8; case GL_SLUMINANCE_ALPHA_EXT: case GL_SLUMINANCE8_ALPHA8_EXT: return &_mesa_texformat_sla8; case GL_COMPRESSED_SLUMINANCE_EXT: return &_mesa_texformat_sl8; case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT: return &_mesa_texformat_sla8; case GL_COMPRESSED_SRGB_EXT: #if FEATURE_texture_s3tc if (ctx->Extensions.EXT_texture_compression_s3tc) return &_mesa_texformat_srgb_dxt1; #endif return &_mesa_texformat_srgb8; case GL_COMPRESSED_SRGB_ALPHA_EXT: #if FEATURE_texture_s3tc if (ctx->Extensions.EXT_texture_compression_s3tc) return &_mesa_texformat_srgba_dxt3; /* Not srgba_dxt1, see spec */ #endif return &_mesa_texformat_srgba8; #if FEATURE_texture_s3tc case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT: if (ctx->Extensions.EXT_texture_compression_s3tc) return &_mesa_texformat_srgb_dxt1; break; case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT: if (ctx->Extensions.EXT_texture_compression_s3tc) return &_mesa_texformat_srgba_dxt1; break; case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT: if (ctx->Extensions.EXT_texture_compression_s3tc) return &_mesa_texformat_srgba_dxt3; break; case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT: if (ctx->Extensions.EXT_texture_compression_s3tc) return &_mesa_texformat_srgba_dxt5; break; #endif default: ; /* fallthrough */ } } #endif /* FEATURE_EXT_texture_sRGB */ _mesa_problem(ctx, "unexpected format in _mesa_choose_tex_format()"); return NULL; } /** * Return datatype and number of components per texel for the * given gl_texture_format. */ void _mesa_format_to_type_and_comps(const struct gl_texture_format *format, GLenum *datatype, GLuint *comps) { switch (format->MesaFormat) { case MESA_FORMAT_RGBA8888: case MESA_FORMAT_RGBA8888_REV: case MESA_FORMAT_ARGB8888: case MESA_FORMAT_ARGB8888_REV: *datatype = CHAN_TYPE; *comps = 4; return; case MESA_FORMAT_RGB888: case MESA_FORMAT_BGR888: *datatype = GL_UNSIGNED_BYTE; *comps = 3; return; case MESA_FORMAT_RGB565: case MESA_FORMAT_RGB565_REV: *datatype = GL_UNSIGNED_SHORT_5_6_5; *comps = 3; return; case MESA_FORMAT_ARGB4444: case MESA_FORMAT_ARGB4444_REV: *datatype = GL_UNSIGNED_SHORT_4_4_4_4; *comps = 4; return; case MESA_FORMAT_ARGB1555: case MESA_FORMAT_ARGB1555_REV: *datatype = GL_UNSIGNED_SHORT_1_5_5_5_REV; *comps = 4; return; case MESA_FORMAT_AL88: case MESA_FORMAT_AL88_REV: *datatype = GL_UNSIGNED_BYTE; *comps = 2; return; case MESA_FORMAT_RGB332: *datatype = GL_UNSIGNED_BYTE_3_3_2; *comps = 3; return; case MESA_FORMAT_A8: case MESA_FORMAT_L8: case MESA_FORMAT_I8: case MESA_FORMAT_CI8: *datatype = GL_UNSIGNED_BYTE; *comps = 1; return; case MESA_FORMAT_YCBCR: case MESA_FORMAT_YCBCR_REV: *datatype = GL_UNSIGNED_SHORT; *comps = 2; return; case MESA_FORMAT_Z24_S8: *datatype = GL_UNSIGNED_INT; *comps = 1; /* XXX OK? */ return; case MESA_FORMAT_S8_Z24: *datatype = GL_UNSIGNED_INT; *comps = 1; /* XXX OK? */ return; case MESA_FORMAT_Z16: *datatype = GL_UNSIGNED_SHORT; *comps = 1; return; case MESA_FORMAT_Z32: *datatype = GL_UNSIGNED_INT; *comps = 1; return; case MESA_FORMAT_DUDV8: *datatype = GL_BYTE; *comps = 2; return; case MESA_FORMAT_SIGNED_RGBA8888: case MESA_FORMAT_SIGNED_RGBA8888_REV: *datatype = GL_BYTE; *comps = 4; return; #if FEATURE_EXT_texture_sRGB case MESA_FORMAT_SRGB8: *datatype = GL_UNSIGNED_BYTE; *comps = 3; return; case MESA_FORMAT_SRGBA8: case MESA_FORMAT_SARGB8: *datatype = GL_UNSIGNED_BYTE; *comps = 4; return; case MESA_FORMAT_SL8: *datatype = GL_UNSIGNED_BYTE; *comps = 1; return; case MESA_FORMAT_SLA8: *datatype = GL_UNSIGNED_BYTE; *comps = 2; return; #endif #if FEATURE_texture_fxt1 case MESA_FORMAT_RGB_FXT1: case MESA_FORMAT_RGBA_FXT1: #endif #if FEATURE_texture_s3tc case MESA_FORMAT_RGB_DXT1: case MESA_FORMAT_RGBA_DXT1: case MESA_FORMAT_RGBA_DXT3: case MESA_FORMAT_RGBA_DXT5: #if FEATURE_EXT_texture_sRGB case MESA_FORMAT_SRGB_DXT1: case MESA_FORMAT_SRGBA_DXT1: case MESA_FORMAT_SRGBA_DXT3: case MESA_FORMAT_SRGBA_DXT5: #endif /* XXX generate error instead? */ *datatype = GL_UNSIGNED_BYTE; *comps = 0; return; #endif case MESA_FORMAT_RGBA: *datatype = CHAN_TYPE; *comps = 4; return; case MESA_FORMAT_RGB: *datatype = CHAN_TYPE; *comps = 3; return; case MESA_FORMAT_LUMINANCE_ALPHA: *datatype = CHAN_TYPE; *comps = 2; return; case MESA_FORMAT_ALPHA: case MESA_FORMAT_LUMINANCE: case MESA_FORMAT_INTENSITY: *datatype = CHAN_TYPE; *comps = 1; return; case MESA_FORMAT_RGBA_FLOAT32: *datatype = GL_FLOAT; *comps = 4; return; case MESA_FORMAT_RGBA_FLOAT16: *datatype = GL_HALF_FLOAT_ARB; *comps = 4; return; case MESA_FORMAT_RGB_FLOAT32: *datatype = GL_FLOAT; *comps = 3; return; case MESA_FORMAT_RGB_FLOAT16: *datatype = GL_HALF_FLOAT_ARB; *comps = 3; return; case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32: *datatype = GL_FLOAT; *comps = 2; return; case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16: *datatype = GL_HALF_FLOAT_ARB; *comps = 2; return; case MESA_FORMAT_ALPHA_FLOAT32: case MESA_FORMAT_LUMINANCE_FLOAT32: case MESA_FORMAT_INTENSITY_FLOAT32: *datatype = GL_FLOAT; *comps = 1; return; case MESA_FORMAT_ALPHA_FLOAT16: case MESA_FORMAT_LUMINANCE_FLOAT16: case MESA_FORMAT_INTENSITY_FLOAT16: *datatype = GL_HALF_FLOAT_ARB; *comps = 1; return; default: _mesa_problem(NULL, "bad format in _mesa_format_to_type_and_comps"); *datatype = 0; *comps = 1; } } /** * Table to map MESA_FORMAT_ to texel fetch/store funcs. * XXX this is somewhat temporary. */ static struct { GLuint Name; FetchTexelFuncF Fetch1D; FetchTexelFuncF Fetch2D; FetchTexelFuncF Fetch3D; StoreTexelFunc StoreTexel; } texfetch_funcs[MESA_FORMAT_COUNT] = { { MESA_FORMAT_RGBA, fetch_texel_1d_f_rgba, fetch_texel_2d_f_rgba, fetch_texel_3d_f_rgba, store_texel_rgba }, { MESA_FORMAT_RGB, fetch_texel_1d_f_rgb, fetch_texel_2d_f_rgb, fetch_texel_3d_f_rgb, store_texel_rgb }, { MESA_FORMAT_ALPHA, fetch_texel_1d_f_alpha, fetch_texel_2d_f_alpha, fetch_texel_3d_f_alpha, store_texel_alpha }, { MESA_FORMAT_LUMINANCE, fetch_texel_1d_f_luminance, fetch_texel_2d_f_luminance, fetch_texel_3d_f_luminance, store_texel_luminance }, { MESA_FORMAT_LUMINANCE_ALPHA, fetch_texel_1d_f_luminance_alpha, fetch_texel_2d_f_luminance_alpha, fetch_texel_3d_f_luminance_alpha, store_texel_luminance_alpha }, { MESA_FORMAT_INTENSITY, fetch_texel_1d_f_intensity, fetch_texel_2d_f_intensity, fetch_texel_3d_f_intensity, store_texel_intensity }, { MESA_FORMAT_SRGB8, fetch_texel_1d_srgb8, fetch_texel_2d_srgb8, fetch_texel_3d_srgb8, store_texel_srgb8 }, { MESA_FORMAT_SRGBA8, fetch_texel_1d_srgba8, fetch_texel_2d_srgba8, fetch_texel_3d_srgba8, store_texel_srgba8 }, { MESA_FORMAT_SARGB8, fetch_texel_1d_sargb8, fetch_texel_2d_sargb8, fetch_texel_3d_sargb8, store_texel_sargb8 }, { MESA_FORMAT_SL8, fetch_texel_1d_sl8, fetch_texel_2d_sl8, fetch_texel_3d_sl8, store_texel_sl8 }, { MESA_FORMAT_SLA8, fetch_texel_1d_sla8, fetch_texel_2d_sla8, fetch_texel_3d_sla8, store_texel_sla8 }, { MESA_FORMAT_RGB_FXT1, NULL, _mesa_fetch_texel_2d_f_rgb_fxt1, NULL, NULL }, { MESA_FORMAT_RGBA_FXT1, NULL, _mesa_fetch_texel_2d_f_rgba_fxt1, NULL, NULL }, { MESA_FORMAT_RGB_DXT1, NULL, _mesa_fetch_texel_2d_f_rgb_dxt1, NULL, NULL }, { MESA_FORMAT_RGBA_DXT1, NULL, _mesa_fetch_texel_2d_f_rgba_dxt1, NULL, NULL }, { MESA_FORMAT_RGBA_DXT3, NULL, _mesa_fetch_texel_2d_f_rgba_dxt3, NULL, NULL }, { MESA_FORMAT_RGBA_DXT5, NULL, _mesa_fetch_texel_2d_f_rgba_dxt5, NULL, NULL }, { MESA_FORMAT_SRGB_DXT1, NULL, _mesa_fetch_texel_2d_f_srgb_dxt1, NULL, NULL }, { MESA_FORMAT_SRGBA_DXT1, NULL, _mesa_fetch_texel_2d_f_srgba_dxt1, NULL, NULL }, { MESA_FORMAT_SRGBA_DXT3, NULL, _mesa_fetch_texel_2d_f_srgba_dxt3, NULL, NULL }, { MESA_FORMAT_SRGBA_DXT5, NULL, _mesa_fetch_texel_2d_f_srgba_dxt5, NULL, NULL }, { MESA_FORMAT_RGBA_FLOAT32, fetch_texel_1d_f_rgba_f32, fetch_texel_2d_f_rgba_f32, fetch_texel_3d_f_rgba_f32, store_texel_rgba_f32 }, { MESA_FORMAT_RGBA_FLOAT16, fetch_texel_1d_f_rgba_f16, fetch_texel_2d_f_rgba_f16, fetch_texel_3d_f_rgba_f16, store_texel_rgba_f16 }, { MESA_FORMAT_RGB_FLOAT32, fetch_texel_1d_f_rgb_f32, fetch_texel_2d_f_rgb_f32, fetch_texel_3d_f_rgb_f32, store_texel_rgb_f32 }, { MESA_FORMAT_RGB_FLOAT16, fetch_texel_1d_f_rgb_f16, fetch_texel_2d_f_rgb_f16, fetch_texel_3d_f_rgb_f16, store_texel_rgb_f16 }, { MESA_FORMAT_ALPHA_FLOAT32, fetch_texel_1d_f_alpha_f32, fetch_texel_2d_f_alpha_f32, fetch_texel_3d_f_alpha_f32, store_texel_alpha_f32 }, { MESA_FORMAT_ALPHA_FLOAT16, fetch_texel_1d_f_alpha_f16, fetch_texel_2d_f_alpha_f16, fetch_texel_3d_f_alpha_f16, store_texel_alpha_f16 }, { MESA_FORMAT_LUMINANCE_FLOAT32, fetch_texel_1d_f_luminance_f32, fetch_texel_2d_f_luminance_f32, fetch_texel_3d_f_luminance_f32, store_texel_luminance_f32 }, { MESA_FORMAT_LUMINANCE_FLOAT16, fetch_texel_1d_f_luminance_f16, fetch_texel_2d_f_luminance_f16, fetch_texel_3d_f_luminance_f16, store_texel_luminance_f16 }, { MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32, fetch_texel_1d_f_luminance_alpha_f32, fetch_texel_2d_f_luminance_alpha_f32, fetch_texel_3d_f_luminance_alpha_f32, store_texel_luminance_alpha_f32 }, { MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16, fetch_texel_1d_f_luminance_alpha_f16, fetch_texel_2d_f_luminance_alpha_f16, fetch_texel_3d_f_luminance_alpha_f16, store_texel_luminance_alpha_f16 }, { MESA_FORMAT_INTENSITY_FLOAT32, fetch_texel_1d_f_intensity_f32, fetch_texel_2d_f_intensity_f32, fetch_texel_3d_f_intensity_f32, store_texel_intensity_f32 }, { MESA_FORMAT_INTENSITY_FLOAT16, fetch_texel_1d_f_intensity_f16, fetch_texel_2d_f_intensity_f16, fetch_texel_3d_f_intensity_f16, store_texel_intensity_f16 }, { MESA_FORMAT_DUDV8, fetch_texel_1d_dudv8, fetch_texel_2d_dudv8, fetch_texel_3d_dudv8, NULL }, { MESA_FORMAT_SIGNED_RGBA8888, fetch_texel_1d_signed_rgba8888, fetch_texel_2d_signed_rgba8888, fetch_texel_3d_signed_rgba8888, store_texel_signed_rgba8888 }, { MESA_FORMAT_SIGNED_RGBA8888_REV, fetch_texel_1d_signed_rgba8888_rev, fetch_texel_2d_signed_rgba8888_rev, fetch_texel_3d_signed_rgba8888_rev, store_texel_signed_rgba8888_rev }, { MESA_FORMAT_RGBA8888, fetch_texel_1d_f_rgba8888, fetch_texel_2d_f_rgba8888, fetch_texel_3d_f_rgba8888, store_texel_rgba8888 }, { MESA_FORMAT_RGBA8888_REV, fetch_texel_1d_f_rgba8888_rev, fetch_texel_2d_f_rgba8888_rev, fetch_texel_3d_f_rgba8888_rev, store_texel_rgba8888_rev }, { MESA_FORMAT_ARGB8888, fetch_texel_1d_f_argb8888, fetch_texel_2d_f_argb8888, fetch_texel_3d_f_argb8888, store_texel_argb8888 }, { MESA_FORMAT_ARGB8888_REV, fetch_texel_1d_f_argb8888_rev, fetch_texel_2d_f_argb8888_rev, fetch_texel_3d_f_argb8888_rev, store_texel_argb8888_rev }, { MESA_FORMAT_RGB888, fetch_texel_1d_f_rgb888, fetch_texel_2d_f_rgb888, fetch_texel_3d_f_rgb888, store_texel_rgb888 }, { MESA_FORMAT_BGR888, fetch_texel_1d_f_bgr888, fetch_texel_2d_f_bgr888, fetch_texel_3d_f_bgr888, store_texel_bgr888 }, { MESA_FORMAT_RGB565, fetch_texel_1d_f_rgb565, fetch_texel_2d_f_rgb565, fetch_texel_3d_f_rgb565, store_texel_rgb565 }, { MESA_FORMAT_RGB565_REV, fetch_texel_1d_f_rgb565_rev, fetch_texel_2d_f_rgb565_rev, fetch_texel_3d_f_rgb565_rev, store_texel_rgb565_rev }, { MESA_FORMAT_RGBA4444, fetch_texel_1d_f_rgba4444, fetch_texel_2d_f_rgba4444, fetch_texel_3d_f_rgba4444, store_texel_rgba4444 }, { MESA_FORMAT_ARGB4444, fetch_texel_1d_f_argb4444, fetch_texel_2d_f_argb4444, fetch_texel_3d_f_argb4444, store_texel_argb4444 }, { MESA_FORMAT_ARGB4444_REV, fetch_texel_1d_f_argb4444_rev, fetch_texel_2d_f_argb4444_rev, fetch_texel_3d_f_argb4444_rev, store_texel_argb4444_rev }, { MESA_FORMAT_RGBA5551, fetch_texel_1d_f_rgba5551, fetch_texel_2d_f_rgba5551, fetch_texel_3d_f_rgba5551, store_texel_rgba5551 }, { MESA_FORMAT_ARGB1555, fetch_texel_1d_f_argb1555, fetch_texel_2d_f_argb1555, fetch_texel_3d_f_argb1555, store_texel_argb1555 }, { MESA_FORMAT_ARGB1555_REV, fetch_texel_1d_f_argb1555_rev, fetch_texel_2d_f_argb1555_rev, fetch_texel_3d_f_argb1555_rev, store_texel_argb1555_rev }, { MESA_FORMAT_AL88, fetch_texel_1d_f_al88, fetch_texel_2d_f_al88, fetch_texel_3d_f_al88, store_texel_al88 }, { MESA_FORMAT_AL88_REV, fetch_texel_1d_f_al88_rev, fetch_texel_2d_f_al88_rev, fetch_texel_3d_f_al88_rev, store_texel_al88_rev }, { MESA_FORMAT_RGB332, fetch_texel_1d_f_rgb332, fetch_texel_2d_f_rgb332, fetch_texel_3d_f_rgb332, store_texel_rgb332 }, { MESA_FORMAT_A8, fetch_texel_1d_f_a8, fetch_texel_2d_f_a8, fetch_texel_3d_f_a8, store_texel_a8 }, { MESA_FORMAT_L8, fetch_texel_1d_f_l8, fetch_texel_2d_f_l8, fetch_texel_3d_f_l8, store_texel_l8 }, { MESA_FORMAT_I8, fetch_texel_1d_f_i8, fetch_texel_2d_f_i8, fetch_texel_3d_f_i8, store_texel_i8 }, { MESA_FORMAT_CI8, fetch_texel_1d_f_ci8, fetch_texel_2d_f_ci8, fetch_texel_3d_f_ci8, store_texel_ci8 }, { MESA_FORMAT_YCBCR, fetch_texel_1d_f_ycbcr, fetch_texel_2d_f_ycbcr, fetch_texel_3d_f_ycbcr, store_texel_ycbcr }, { MESA_FORMAT_YCBCR_REV, fetch_texel_1d_f_ycbcr_rev, fetch_texel_2d_f_ycbcr_rev, fetch_texel_3d_f_ycbcr_rev, store_texel_ycbcr_rev }, { MESA_FORMAT_Z24_S8, fetch_texel_1d_f_z24_s8, fetch_texel_2d_f_z24_s8, fetch_texel_3d_f_z24_s8, store_texel_z24_s8 }, { MESA_FORMAT_S8_Z24, fetch_texel_1d_f_s8_z24, fetch_texel_2d_f_s8_z24, fetch_texel_3d_f_s8_z24, store_texel_s8_z24 }, { MESA_FORMAT_Z16, fetch_texel_1d_f_z16, fetch_texel_2d_f_z16, fetch_texel_3d_f_z16, store_texel_z16 }, { MESA_FORMAT_Z32, fetch_texel_1d_f_z32, fetch_texel_2d_f_z32, fetch_texel_3d_f_z32, store_texel_z32 } }; FetchTexelFuncF _mesa_get_texel_fetch_func(GLuint format, GLuint dims) { FetchTexelFuncF f; GLuint i; /* XXX replace loop with direct table lookup */ for (i = 0; i < MESA_FORMAT_COUNT; i++) { if (texfetch_funcs[i].Name == format) { switch (dims) { case 1: f = texfetch_funcs[i].Fetch1D; break; case 2: f = texfetch_funcs[i].Fetch2D; break; case 3: f = texfetch_funcs[i].Fetch3D; break; } if (!f) f = fetch_null_texelf; return f; } } return NULL; } StoreTexelFunc _mesa_get_texel_store_func(GLuint format) { GLuint i; /* XXX replace loop with direct table lookup */ for (i = 0; i < MESA_FORMAT_COUNT; i++) { if (texfetch_funcs[i].Name == format) { if (texfetch_funcs[i].StoreTexel) return texfetch_funcs[i].StoreTexel; else return store_null_texel; } } return NULL; }