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-rw-r--r--mesalib/src/mesa/main/formats.c3738
1 files changed, 1869 insertions, 1869 deletions
diff --git a/mesalib/src/mesa/main/formats.c b/mesalib/src/mesa/main/formats.c
index c0fcf9cd4..2826addf9 100644
--- a/mesalib/src/mesa/main/formats.c
+++ b/mesalib/src/mesa/main/formats.c
@@ -1,1869 +1,1869 @@
-/*
- * 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.
- */
-
-
-#include "imports.h"
-#include "formats.h"
-#include "mfeatures.h"
-
-
-/**
- * Information about texture formats.
- */
-struct gl_format_info
-{
- gl_format Name;
-
- /** text name for debugging */
- const char *StrName;
-
- /**
- * Base format is one of GL_RED, GL_RG, GL_RGB, GL_RGBA, GL_ALPHA,
- * GL_LUMINANCE, GL_LUMINANCE_ALPHA, GL_INTENSITY, GL_YCBCR_MESA,
- * GL_DEPTH_COMPONENT, GL_STENCIL_INDEX, GL_DEPTH_STENCIL, GL_DUDV_ATI.
- */
- GLenum BaseFormat;
-
- /**
- * Logical data type: one of GL_UNSIGNED_NORMALIZED, GL_SIGNED_NORMALIZED,
- * GL_UNSIGNED_INT, GL_INT, GL_FLOAT.
- */
- GLenum DataType;
-
- GLubyte RedBits;
- GLubyte GreenBits;
- GLubyte BlueBits;
- GLubyte AlphaBits;
- GLubyte LuminanceBits;
- GLubyte IntensityBits;
- GLubyte IndexBits;
- GLubyte DepthBits;
- GLubyte StencilBits;
-
- /**
- * To describe compressed formats. If not compressed, Width=Height=1.
- */
- GLubyte BlockWidth, BlockHeight;
- GLubyte BytesPerBlock;
-};
-
-
-/**
- * Info about each format.
- * These must be in the same order as the MESA_FORMAT_* enums so that
- * we can do lookups without searching.
- */
-static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
-{
- {
- MESA_FORMAT_NONE, /* Name */
- "MESA_FORMAT_NONE", /* StrName */
- GL_NONE, /* BaseFormat */
- GL_NONE, /* DataType */
- 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
- 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
- 0, 0, 0 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_RGBA8888, /* Name */
- "MESA_FORMAT_RGBA8888", /* StrName */
- GL_RGBA, /* BaseFormat */
- GL_UNSIGNED_NORMALIZED, /* DataType */
- 8, 8, 8, 8, /* Red/Green/Blue/AlphaBits */
- 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 4 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_RGBA8888_REV, /* Name */
- "MESA_FORMAT_RGBA8888_REV", /* StrName */
- GL_RGBA, /* BaseFormat */
- GL_UNSIGNED_NORMALIZED, /* DataType */
- 8, 8, 8, 8, /* Red/Green/Blue/AlphaBits */
- 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 4 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_ARGB8888, /* Name */
- "MESA_FORMAT_ARGB8888", /* StrName */
- GL_RGBA, /* BaseFormat */
- GL_UNSIGNED_NORMALIZED, /* DataType */
- 8, 8, 8, 8, /* Red/Green/Blue/AlphaBits */
- 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 4 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_ARGB8888_REV, /* Name */
- "MESA_FORMAT_ARGB8888_REV", /* StrName */
- GL_RGBA, /* BaseFormat */
- GL_UNSIGNED_NORMALIZED, /* DataType */
- 8, 8, 8, 8, /* Red/Green/Blue/AlphaBits */
- 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 4 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_XRGB8888, /* Name */
- "MESA_FORMAT_XRGB8888", /* StrName */
- GL_RGB, /* BaseFormat */
- GL_UNSIGNED_NORMALIZED, /* DataType */
- 8, 8, 8, 0, /* Red/Green/Blue/AlphaBits */
- 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 4 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_XRGB8888_REV, /* Name */
- "MESA_FORMAT_XRGB8888_REV", /* StrName */
- GL_RGB, /* BaseFormat */
- GL_UNSIGNED_NORMALIZED, /* DataType */
- 8, 8, 8, 0, /* Red/Green/Blue/AlphaBits */
- 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 4 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_RGB888, /* Name */
- "MESA_FORMAT_RGB888", /* StrName */
- GL_RGB, /* BaseFormat */
- GL_UNSIGNED_NORMALIZED, /* DataType */
- 8, 8, 8, 0, /* Red/Green/Blue/AlphaBits */
- 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 3 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_BGR888, /* Name */
- "MESA_FORMAT_BGR888", /* StrName */
- GL_RGB, /* BaseFormat */
- GL_UNSIGNED_NORMALIZED, /* DataType */
- 8, 8, 8, 0, /* Red/Green/Blue/AlphaBits */
- 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 3 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_RGB565, /* Name */
- "MESA_FORMAT_RGB565", /* StrName */
- GL_RGB, /* BaseFormat */
- GL_UNSIGNED_NORMALIZED, /* DataType */
- 5, 6, 5, 0, /* Red/Green/Blue/AlphaBits */
- 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 2 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_RGB565_REV, /* Name */
- "MESA_FORMAT_RGB565_REV", /* StrName */
- GL_RGB, /* BaseFormat */
- GL_UNSIGNED_NORMALIZED, /* DataType */
- 5, 6, 5, 0, /* Red/Green/Blue/AlphaBits */
- 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 2 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_ARGB4444, /* Name */
- "MESA_FORMAT_ARGB4444", /* StrName */
- GL_RGBA, /* BaseFormat */
- GL_UNSIGNED_NORMALIZED, /* DataType */
- 4, 4, 4, 4, /* Red/Green/Blue/AlphaBits */
- 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 2 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_ARGB4444_REV, /* Name */
- "MESA_FORMAT_ARGB4444_REV", /* StrName */
- GL_RGBA, /* BaseFormat */
- GL_UNSIGNED_NORMALIZED, /* DataType */
- 4, 4, 4, 4, /* Red/Green/Blue/AlphaBits */
- 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 2 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_RGBA5551, /* Name */
- "MESA_FORMAT_RGBA5551", /* StrName */
- GL_RGBA, /* BaseFormat */
- GL_UNSIGNED_NORMALIZED, /* DataType */
- 5, 5, 5, 1, /* Red/Green/Blue/AlphaBits */
- 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 2 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_ARGB1555, /* Name */
- "MESA_FORMAT_ARGB1555", /* StrName */
- GL_RGBA, /* BaseFormat */
- GL_UNSIGNED_NORMALIZED, /* DataType */
- 5, 5, 5, 1, /* Red/Green/Blue/AlphaBits */
- 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 2 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_ARGB1555_REV, /* Name */
- "MESA_FORMAT_ARGB1555_REV", /* StrName */
- GL_RGBA, /* BaseFormat */
- GL_UNSIGNED_NORMALIZED, /* DataType */
- 5, 5, 5, 1, /* Red/Green/Blue/AlphaBits */
- 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 2 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_AL44, /* Name */
- "MESA_FORMAT_AL44", /* StrName */
- GL_LUMINANCE_ALPHA, /* BaseFormat */
- GL_UNSIGNED_NORMALIZED, /* DataType */
- 0, 0, 0, 4, /* Red/Green/Blue/AlphaBits */
- 4, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 1 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_AL88, /* Name */
- "MESA_FORMAT_AL88", /* StrName */
- GL_LUMINANCE_ALPHA, /* BaseFormat */
- GL_UNSIGNED_NORMALIZED, /* DataType */
- 0, 0, 0, 8, /* Red/Green/Blue/AlphaBits */
- 8, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 2 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_AL88_REV, /* Name */
- "MESA_FORMAT_AL88_REV", /* StrName */
- GL_LUMINANCE_ALPHA, /* BaseFormat */
- GL_UNSIGNED_NORMALIZED, /* DataType */
- 0, 0, 0, 8, /* Red/Green/Blue/AlphaBits */
- 8, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 2 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_AL1616, /* Name */
- "MESA_FORMAT_AL1616", /* StrName */
- GL_LUMINANCE_ALPHA, /* BaseFormat */
- GL_UNSIGNED_NORMALIZED, /* DataType */
- 0, 0, 0, 16, /* Red/Green/Blue/AlphaBits */
- 16, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 4 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_AL1616_REV, /* Name */
- "MESA_FORMAT_AL1616_REV", /* StrName */
- GL_LUMINANCE_ALPHA, /* BaseFormat */
- GL_UNSIGNED_NORMALIZED, /* DataType */
- 0, 0, 0, 16, /* Red/Green/Blue/AlphaBits */
- 16, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 4 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_RGB332, /* Name */
- "MESA_FORMAT_RGB332", /* StrName */
- GL_RGB, /* BaseFormat */
- GL_UNSIGNED_NORMALIZED, /* DataType */
- 3, 3, 2, 0, /* Red/Green/Blue/AlphaBits */
- 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 1 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_A8, /* Name */
- "MESA_FORMAT_A8", /* StrName */
- GL_ALPHA, /* BaseFormat */
- GL_UNSIGNED_NORMALIZED, /* DataType */
- 0, 0, 0, 8, /* Red/Green/Blue/AlphaBits */
- 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 1 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_A16, /* Name */
- "MESA_FORMAT_A16", /* StrName */
- GL_ALPHA, /* BaseFormat */
- GL_UNSIGNED_NORMALIZED, /* DataType */
- 0, 0, 0, 16, /* Red/Green/Blue/AlphaBits */
- 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 2 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_L8, /* Name */
- "MESA_FORMAT_L8", /* StrName */
- GL_LUMINANCE, /* BaseFormat */
- GL_UNSIGNED_NORMALIZED, /* DataType */
- 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
- 8, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 1 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_L16, /* Name */
- "MESA_FORMAT_L16", /* StrName */
- GL_LUMINANCE, /* BaseFormat */
- GL_UNSIGNED_NORMALIZED, /* DataType */
- 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
- 16, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 2 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_I8, /* Name */
- "MESA_FORMAT_I8", /* StrName */
- GL_INTENSITY, /* BaseFormat */
- GL_UNSIGNED_NORMALIZED, /* DataType */
- 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
- 0, 8, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 1 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_I16, /* Name */
- "MESA_FORMAT_I16", /* StrName */
- GL_INTENSITY, /* BaseFormat */
- GL_UNSIGNED_NORMALIZED, /* DataType */
- 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
- 0, 16, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 2 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_YCBCR, /* Name */
- "MESA_FORMAT_YCBCR", /* StrName */
- GL_YCBCR_MESA, /* BaseFormat */
- GL_UNSIGNED_NORMALIZED, /* DataType */
- 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
- 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 2 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_YCBCR_REV, /* Name */
- "MESA_FORMAT_YCBCR_REV", /* StrName */
- GL_YCBCR_MESA, /* BaseFormat */
- GL_UNSIGNED_NORMALIZED, /* DataType */
- 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
- 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 2 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_R8,
- "MESA_FORMAT_R8",
- GL_RED,
- GL_UNSIGNED_NORMALIZED,
- 8, 0, 0, 0,
- 0, 0, 0, 0, 0,
- 1, 1, 1
- },
- {
- MESA_FORMAT_RG88,
- "MESA_FORMAT_RG88",
- GL_RG,
- GL_UNSIGNED_NORMALIZED,
- 8, 8, 0, 0,
- 0, 0, 0, 0, 0,
- 1, 1, 2
- },
- {
- MESA_FORMAT_RG88_REV,
- "MESA_FORMAT_RG88_REV",
- GL_RG,
- GL_UNSIGNED_NORMALIZED,
- 8, 8, 0, 0,
- 0, 0, 0, 0, 0,
- 1, 1, 2
- },
- {
- MESA_FORMAT_R16,
- "MESA_FORMAT_R16",
- GL_RED,
- GL_UNSIGNED_NORMALIZED,
- 16, 0, 0, 0,
- 0, 0, 0, 0, 0,
- 1, 1, 2
- },
- {
- MESA_FORMAT_RG1616,
- "MESA_FORMAT_RG1616",
- GL_RG,
- GL_UNSIGNED_NORMALIZED,
- 16, 16, 0, 0,
- 0, 0, 0, 0, 0,
- 1, 1, 4
- },
- {
- MESA_FORMAT_RG1616_REV,
- "MESA_FORMAT_RG1616_REV",
- GL_RG,
- GL_UNSIGNED_NORMALIZED,
- 16, 16, 0, 0,
- 0, 0, 0, 0, 0,
- 1, 1, 4
- },
- {
- MESA_FORMAT_ARGB2101010,
- "MESA_FORMAT_ARGB2101010",
- GL_RGBA,
- GL_UNSIGNED_NORMALIZED,
- 10, 10, 10, 2,
- 0, 0, 0, 0, 0,
- 1, 1, 4
- },
- {
- MESA_FORMAT_Z24_S8, /* Name */
- "MESA_FORMAT_Z24_S8", /* StrName */
- GL_DEPTH_STENCIL, /* BaseFormat */
- GL_UNSIGNED_INT, /* DataType */
- 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
- 0, 0, 0, 24, 8, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 4 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_S8_Z24, /* Name */
- "MESA_FORMAT_S8_Z24", /* StrName */
- GL_DEPTH_STENCIL, /* BaseFormat */
- GL_UNSIGNED_INT, /* DataType */
- 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
- 0, 0, 0, 24, 8, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 4 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_Z16, /* Name */
- "MESA_FORMAT_Z16", /* StrName */
- GL_DEPTH_COMPONENT, /* BaseFormat */
- GL_UNSIGNED_INT, /* DataType */
- 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
- 0, 0, 0, 16, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 2 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_X8_Z24, /* Name */
- "MESA_FORMAT_X8_Z24", /* StrName */
- GL_DEPTH_COMPONENT, /* BaseFormat */
- GL_UNSIGNED_INT, /* DataType */
- 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
- 0, 0, 0, 24, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 4 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_Z24_X8, /* Name */
- "MESA_FORMAT_Z24_X8", /* StrName */
- GL_DEPTH_COMPONENT, /* BaseFormat */
- GL_UNSIGNED_INT, /* DataType */
- 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
- 0, 0, 0, 24, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 4 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_Z32, /* Name */
- "MESA_FORMAT_Z32", /* StrName */
- GL_DEPTH_COMPONENT, /* BaseFormat */
- GL_UNSIGNED_INT, /* DataType */
- 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
- 0, 0, 0, 32, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 4 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_S8, /* Name */
- "MESA_FORMAT_S8", /* StrName */
- GL_STENCIL_INDEX, /* BaseFormat */
- GL_UNSIGNED_INT, /* DataType */
- 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
- 0, 0, 0, 0, 8, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 1 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_SRGB8,
- "MESA_FORMAT_SRGB8",
- GL_RGB,
- GL_UNSIGNED_NORMALIZED,
- 8, 8, 8, 0,
- 0, 0, 0, 0, 0,
- 1, 1, 3
- },
- {
- MESA_FORMAT_SRGBA8,
- "MESA_FORMAT_SRGBA8",
- GL_RGBA,
- GL_UNSIGNED_NORMALIZED,
- 8, 8, 8, 8,
- 0, 0, 0, 0, 0,
- 1, 1, 4
- },
- {
- MESA_FORMAT_SARGB8,
- "MESA_FORMAT_SARGB8",
- GL_RGBA,
- GL_UNSIGNED_NORMALIZED,
- 8, 8, 8, 8,
- 0, 0, 0, 0, 0,
- 1, 1, 4
- },
- {
- MESA_FORMAT_SL8,
- "MESA_FORMAT_SL8",
- GL_LUMINANCE,
- GL_UNSIGNED_NORMALIZED,
- 0, 0, 0, 0,
- 8, 0, 0, 0, 0,
- 1, 1, 1
- },
- {
- MESA_FORMAT_SLA8,
- "MESA_FORMAT_SLA8",
- GL_LUMINANCE_ALPHA,
- GL_UNSIGNED_NORMALIZED,
- 0, 0, 0, 8,
- 8, 0, 0, 0, 0,
- 1, 1, 2
- },
- {
- MESA_FORMAT_SRGB_DXT1, /* Name */
- "MESA_FORMAT_SRGB_DXT1", /* StrName */
- GL_RGB, /* BaseFormat */
- GL_UNSIGNED_NORMALIZED, /* DataType */
- 4, 4, 4, 0, /* approx Red/Green/Blue/AlphaBits */
- 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
- 4, 4, 8 /* 8 bytes per 4x4 block */
- },
- {
- MESA_FORMAT_SRGBA_DXT1,
- "MESA_FORMAT_SRGBA_DXT1",
- GL_RGBA,
- GL_UNSIGNED_NORMALIZED,
- 4, 4, 4, 4,
- 0, 0, 0, 0, 0,
- 4, 4, 8 /* 8 bytes per 4x4 block */
- },
- {
- MESA_FORMAT_SRGBA_DXT3,
- "MESA_FORMAT_SRGBA_DXT3",
- GL_RGBA,
- GL_UNSIGNED_NORMALIZED,
- 4, 4, 4, 4,
- 0, 0, 0, 0, 0,
- 4, 4, 16 /* 16 bytes per 4x4 block */
- },
- {
- MESA_FORMAT_SRGBA_DXT5,
- "MESA_FORMAT_SRGBA_DXT5",
- GL_RGBA,
- GL_UNSIGNED_NORMALIZED,
- 4, 4, 4, 4,
- 0, 0, 0, 0, 0,
- 4, 4, 16 /* 16 bytes per 4x4 block */
- },
-
- {
- MESA_FORMAT_RGB_FXT1,
- "MESA_FORMAT_RGB_FXT1",
- GL_RGB,
- GL_UNSIGNED_NORMALIZED,
- 4, 4, 4, 0, /* approx Red/Green/BlueBits */
- 0, 0, 0, 0, 0,
- 8, 4, 16 /* 16 bytes per 8x4 block */
- },
- {
- MESA_FORMAT_RGBA_FXT1,
- "MESA_FORMAT_RGBA_FXT1",
- GL_RGBA,
- GL_UNSIGNED_NORMALIZED,
- 4, 4, 4, 1, /* approx Red/Green/Blue/AlphaBits */
- 0, 0, 0, 0, 0,
- 8, 4, 16 /* 16 bytes per 8x4 block */
- },
-
- {
- MESA_FORMAT_RGB_DXT1, /* Name */
- "MESA_FORMAT_RGB_DXT1", /* StrName */
- GL_RGB, /* BaseFormat */
- GL_UNSIGNED_NORMALIZED, /* DataType */
- 4, 4, 4, 0, /* approx Red/Green/Blue/AlphaBits */
- 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
- 4, 4, 8 /* 8 bytes per 4x4 block */
- },
- {
- MESA_FORMAT_RGBA_DXT1,
- "MESA_FORMAT_RGBA_DXT1",
- GL_RGBA,
- GL_UNSIGNED_NORMALIZED,
- 4, 4, 4, 4,
- 0, 0, 0, 0, 0,
- 4, 4, 8 /* 8 bytes per 4x4 block */
- },
- {
- MESA_FORMAT_RGBA_DXT3,
- "MESA_FORMAT_RGBA_DXT3",
- GL_RGBA,
- GL_UNSIGNED_NORMALIZED,
- 4, 4, 4, 4,
- 0, 0, 0, 0, 0,
- 4, 4, 16 /* 16 bytes per 4x4 block */
- },
- {
- MESA_FORMAT_RGBA_DXT5,
- "MESA_FORMAT_RGBA_DXT5",
- GL_RGBA,
- GL_UNSIGNED_NORMALIZED,
- 4, 4, 4, 4,
- 0, 0, 0, 0, 0,
- 4, 4, 16 /* 16 bytes per 4x4 block */
- },
- {
- MESA_FORMAT_RGBA_FLOAT32,
- "MESA_FORMAT_RGBA_FLOAT32",
- GL_RGBA,
- GL_FLOAT,
- 32, 32, 32, 32,
- 0, 0, 0, 0, 0,
- 1, 1, 16
- },
- {
- MESA_FORMAT_RGBA_FLOAT16,
- "MESA_FORMAT_RGBA_FLOAT16",
- GL_RGBA,
- GL_FLOAT,
- 16, 16, 16, 16,
- 0, 0, 0, 0, 0,
- 1, 1, 8
- },
- {
- MESA_FORMAT_RGB_FLOAT32,
- "MESA_FORMAT_RGB_FLOAT32",
- GL_RGB,
- GL_FLOAT,
- 32, 32, 32, 0,
- 0, 0, 0, 0, 0,
- 1, 1, 12
- },
- {
- MESA_FORMAT_RGB_FLOAT16,
- "MESA_FORMAT_RGB_FLOAT16",
- GL_RGB,
- GL_FLOAT,
- 16, 16, 16, 0,
- 0, 0, 0, 0, 0,
- 1, 1, 6
- },
- {
- MESA_FORMAT_ALPHA_FLOAT32,
- "MESA_FORMAT_ALPHA_FLOAT32",
- GL_ALPHA,
- GL_FLOAT,
- 0, 0, 0, 32,
- 0, 0, 0, 0, 0,
- 1, 1, 4
- },
- {
- MESA_FORMAT_ALPHA_FLOAT16,
- "MESA_FORMAT_ALPHA_FLOAT16",
- GL_ALPHA,
- GL_FLOAT,
- 0, 0, 0, 16,
- 0, 0, 0, 0, 0,
- 1, 1, 2
- },
- {
- MESA_FORMAT_LUMINANCE_FLOAT32,
- "MESA_FORMAT_LUMINANCE_FLOAT32",
- GL_LUMINANCE,
- GL_FLOAT,
- 0, 0, 0, 0,
- 32, 0, 0, 0, 0,
- 1, 1, 4
- },
- {
- MESA_FORMAT_LUMINANCE_FLOAT16,
- "MESA_FORMAT_LUMINANCE_FLOAT16",
- GL_LUMINANCE,
- GL_FLOAT,
- 0, 0, 0, 0,
- 16, 0, 0, 0, 0,
- 1, 1, 2
- },
- {
- MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32,
- "MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32",
- GL_LUMINANCE_ALPHA,
- GL_FLOAT,
- 0, 0, 0, 32,
- 32, 0, 0, 0, 0,
- 1, 1, 8
- },
- {
- MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16,
- "MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16",
- GL_LUMINANCE_ALPHA,
- GL_FLOAT,
- 0, 0, 0, 16,
- 16, 0, 0, 0, 0,
- 1, 1, 4
- },
- {
- MESA_FORMAT_INTENSITY_FLOAT32,
- "MESA_FORMAT_INTENSITY_FLOAT32",
- GL_INTENSITY,
- GL_FLOAT,
- 0, 0, 0, 0,
- 0, 32, 0, 0, 0,
- 1, 1, 4
- },
- {
- MESA_FORMAT_INTENSITY_FLOAT16,
- "MESA_FORMAT_INTENSITY_FLOAT16",
- GL_INTENSITY,
- GL_FLOAT,
- 0, 0, 0, 0,
- 0, 16, 0, 0, 0,
- 1, 1, 2
- },
- {
- MESA_FORMAT_R_FLOAT32,
- "MESA_FORMAT_R_FLOAT32",
- GL_RED,
- GL_FLOAT,
- 32, 0, 0, 0,
- 0, 0, 0, 0, 0,
- 1, 1, 4
- },
- {
- MESA_FORMAT_R_FLOAT16,
- "MESA_FORMAT_R_FLOAT16",
- GL_RED,
- GL_FLOAT,
- 16, 0, 0, 0,
- 0, 0, 0, 0, 0,
- 1, 1, 2
- },
- {
- MESA_FORMAT_RG_FLOAT32,
- "MESA_FORMAT_RG_FLOAT32",
- GL_RG,
- GL_FLOAT,
- 32, 32, 0, 0,
- 0, 0, 0, 0, 0,
- 1, 1, 8
- },
- {
- MESA_FORMAT_RG_FLOAT16,
- "MESA_FORMAT_RG_FLOAT16",
- GL_RG,
- GL_FLOAT,
- 16, 16, 0, 0,
- 0, 0, 0, 0, 0,
- 1, 1, 4
- },
-
- /* unnormalized signed int formats */
- {
- MESA_FORMAT_RGBA_INT8,
- "MESA_FORMAT_RGBA_INT8",
- GL_RGBA,
- GL_INT,
- 8, 8, 8, 8,
- 0, 0, 0, 0, 0,
- 1, 1, 4
- },
- {
- MESA_FORMAT_RGBA_INT16,
- "MESA_FORMAT_RGBA_INT16",
- GL_RGBA,
- GL_INT,
- 16, 16, 16, 16,
- 0, 0, 0, 0, 0,
- 1, 1, 8
- },
- {
- MESA_FORMAT_RGBA_INT32,
- "MESA_FORMAT_RGBA_INT32",
- GL_RGBA,
- GL_INT,
- 32, 32, 32, 32,
- 0, 0, 0, 0, 0,
- 1, 1, 16
- },
-
- /* unnormalized unsigned int formats */
- {
- MESA_FORMAT_RGBA_UINT8,
- "MESA_FORMAT_RGBA_UINT8",
- GL_RGBA,
- GL_UNSIGNED_INT,
- 8, 8, 8, 8,
- 0, 0, 0, 0, 0,
- 1, 1, 4
- },
- {
- MESA_FORMAT_RGBA_UINT16,
- "MESA_FORMAT_RGBA_UINT16",
- GL_RGBA,
- GL_UNSIGNED_INT,
- 16, 16, 16, 16,
- 0, 0, 0, 0, 0,
- 1, 1, 8
- },
- {
- MESA_FORMAT_RGBA_UINT32,
- "MESA_FORMAT_RGBA_UINT32",
- GL_RGBA,
- GL_UNSIGNED_INT,
- 32, 32, 32, 32,
- 0, 0, 0, 0, 0,
- 1, 1, 16
- },
-
-
- {
- MESA_FORMAT_DUDV8,
- "MESA_FORMAT_DUDV8",
- GL_DUDV_ATI,
- GL_SIGNED_NORMALIZED,
- 0, 0, 0, 0,
- 0, 0, 0, 0, 0,
- 1, 1, 2
- },
-
- /* Signed 8 bits / channel */
- {
- MESA_FORMAT_SIGNED_R8, /* Name */
- "MESA_FORMAT_SIGNED_R8", /* StrName */
- GL_RED, /* BaseFormat */
- GL_SIGNED_NORMALIZED, /* DataType */
- 8, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
- 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 1 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_SIGNED_RG88_REV,
- "MESA_FORMAT_SIGNED_RG88_REV",
- GL_RG,
- GL_SIGNED_NORMALIZED,
- 8, 8, 0, 0,
- 0, 0, 0, 0, 0,
- 1, 1, 2
- },
- {
- MESA_FORMAT_SIGNED_RGBX8888,
- "MESA_FORMAT_SIGNED_RGBX8888",
- GL_RGB,
- GL_SIGNED_NORMALIZED,
- 8, 8, 8, 0,
- 0, 0, 0, 0, 0,
- 1, 1, 4 /* 4 bpp, but no alpha */
- },
- {
- MESA_FORMAT_SIGNED_RGBA8888,
- "MESA_FORMAT_SIGNED_RGBA8888",
- GL_RGBA,
- GL_SIGNED_NORMALIZED,
- 8, 8, 8, 8,
- 0, 0, 0, 0, 0,
- 1, 1, 4
- },
- {
- MESA_FORMAT_SIGNED_RGBA8888_REV,
- "MESA_FORMAT_SIGNED_RGBA8888_REV",
- GL_RGBA,
- GL_SIGNED_NORMALIZED,
- 8, 8, 8, 8,
- 0, 0, 0, 0, 0,
- 1, 1, 4
- },
-
- /* Signed 16 bits / channel */
- {
- MESA_FORMAT_SIGNED_R16,
- "MESA_FORMAT_SIGNED_R16",
- GL_RED,
- GL_SIGNED_NORMALIZED,
- 16, 0, 0, 0,
- 0, 0, 0, 0, 0,
- 1, 1, 2
- },
- {
- MESA_FORMAT_SIGNED_GR1616,
- "MESA_FORMAT_SIGNED_GR1616",
- GL_RG,
- GL_SIGNED_NORMALIZED,
- 16, 16, 0, 0,
- 0, 0, 0, 0, 0,
- 1, 1, 4
- },
- {
- MESA_FORMAT_SIGNED_RGB_16,
- "MESA_FORMAT_SIGNED_RGB_16",
- GL_RGB,
- GL_SIGNED_NORMALIZED,
- 16, 16, 16, 0,
- 0, 0, 0, 0, 0,
- 1, 1, 6
- },
- {
- MESA_FORMAT_SIGNED_RGBA_16,
- "MESA_FORMAT_SIGNED_RGBA_16",
- GL_RGBA,
- GL_SIGNED_NORMALIZED,
- 16, 16, 16, 16,
- 0, 0, 0, 0, 0,
- 1, 1, 8
- },
- {
- MESA_FORMAT_RGBA_16,
- "MESA_FORMAT_RGBA_16",
- GL_RGBA,
- GL_UNSIGNED_NORMALIZED,
- 16, 16, 16, 16,
- 0, 0, 0, 0, 0,
- 1, 1, 8
- },
- {
- MESA_FORMAT_RED_RGTC1,
- "MESA_FORMAT_RED_RGTC1",
- GL_RED,
- GL_UNSIGNED_NORMALIZED,
- 4, 0, 0, 0,
- 0, 0, 0, 0, 0,
- 4, 4, 8 /* 8 bytes per 4x4 block */
- },
- {
- MESA_FORMAT_SIGNED_RED_RGTC1,
- "MESA_FORMAT_SIGNED_RED_RGTC1",
- GL_RED,
- GL_SIGNED_NORMALIZED,
- 4, 0, 0, 0,
- 0, 0, 0, 0, 0,
- 4, 4, 8 /* 8 bytes per 4x4 block */
- },
- {
- MESA_FORMAT_RG_RGTC2,
- "MESA_FORMAT_RG_RGTC2",
- GL_RG,
- GL_UNSIGNED_NORMALIZED,
- 4, 4, 0, 0,
- 0, 0, 0, 0, 0,
- 4, 4, 16 /* 16 bytes per 4x4 block */
- },
- {
- MESA_FORMAT_SIGNED_RG_RGTC2,
- "MESA_FORMAT_SIGNED_RG_RGTC2",
- GL_RG,
- GL_SIGNED_NORMALIZED,
- 4, 4, 0, 0,
- 0, 0, 0, 0, 0,
- 4, 4, 16 /* 16 bytes per 4x4 block */
- },
- {
- MESA_FORMAT_L_LATC1,
- "MESA_FORMAT_L_LATC1",
- GL_LUMINANCE,
- GL_UNSIGNED_NORMALIZED,
- 0, 0, 0, 0,
- 4, 0, 0, 0, 0,
- 4, 4, 8 /* 8 bytes per 4x4 block */
- },
- {
- MESA_FORMAT_SIGNED_L_LATC1,
- "MESA_FORMAT_SIGNED_L_LATC1",
- GL_LUMINANCE,
- GL_SIGNED_NORMALIZED,
- 0, 0, 0, 0,
- 4, 0, 0, 0, 0,
- 4, 4, 8 /* 8 bytes per 4x4 block */
- },
- {
- MESA_FORMAT_LA_LATC2,
- "MESA_FORMAT_LA_LATC2",
- GL_LUMINANCE_ALPHA,
- GL_UNSIGNED_NORMALIZED,
- 0, 0, 0, 4,
- 4, 0, 0, 0, 0,
- 4, 4, 16 /* 16 bytes per 4x4 block */
- },
- {
- MESA_FORMAT_SIGNED_LA_LATC2,
- "MESA_FORMAT_SIGNED_LA_LATC2",
- GL_LUMINANCE_ALPHA,
- GL_SIGNED_NORMALIZED,
- 0, 0, 0, 4,
- 4, 0, 0, 0, 0,
- 4, 4, 16 /* 16 bytes per 4x4 block */
- },
-
- /* Signed formats from EXT_texture_snorm that are not in GL3.1 */
- {
- MESA_FORMAT_SIGNED_A8,
- "MESA_FORMAT_SIGNED_A8",
- GL_ALPHA,
- GL_SIGNED_NORMALIZED,
- 0, 0, 0, 8,
- 0, 0, 0, 0, 0,
- 1, 1, 1
- },
- {
- MESA_FORMAT_SIGNED_L8,
- "MESA_FORMAT_SIGNED_L8",
- GL_LUMINANCE,
- GL_SIGNED_NORMALIZED,
- 0, 0, 0, 0,
- 8, 0, 0, 0, 0,
- 1, 1, 1
- },
- {
- MESA_FORMAT_SIGNED_AL88,
- "MESA_FORMAT_SIGNED_AL88",
- GL_LUMINANCE_ALPHA,
- GL_SIGNED_NORMALIZED,
- 0, 0, 0, 8,
- 8, 0, 0, 0, 0,
- 1, 1, 2
- },
- {
- MESA_FORMAT_SIGNED_I8,
- "MESA_FORMAT_SIGNED_I8",
- GL_INTENSITY,
- GL_SIGNED_NORMALIZED,
- 0, 0, 0, 0,
- 0, 8, 0, 0, 0,
- 1, 1, 1
- },
- {
- MESA_FORMAT_SIGNED_A16,
- "MESA_FORMAT_SIGNED_A16",
- GL_ALPHA,
- GL_SIGNED_NORMALIZED,
- 0, 0, 0, 16,
- 0, 0, 0, 0, 0,
- 1, 1, 2
- },
- {
- MESA_FORMAT_SIGNED_L16,
- "MESA_FORMAT_SIGNED_L16",
- GL_LUMINANCE,
- GL_SIGNED_NORMALIZED,
- 0, 0, 0, 0,
- 16, 0, 0, 0, 0,
- 1, 1, 2
- },
- {
- MESA_FORMAT_SIGNED_AL1616,
- "MESA_FORMAT_SIGNED_AL1616",
- GL_LUMINANCE_ALPHA,
- GL_SIGNED_NORMALIZED,
- 0, 0, 0, 16,
- 16, 0, 0, 0, 0,
- 1, 1, 4
- },
- {
- MESA_FORMAT_SIGNED_I16,
- "MESA_FORMAT_SIGNED_I16",
- GL_INTENSITY,
- GL_SIGNED_NORMALIZED,
- 0, 0, 0, 0,
- 0, 16, 0, 0, 0,
- 1, 1, 2
- },
- {
- MESA_FORMAT_RGB9_E5_FLOAT,
- "MESA_FORMAT_RGB9_E5",
- GL_RGB,
- GL_FLOAT,
- 9, 9, 9, 0,
- 0, 0, 0, 0, 0,
- 1, 1, 4
- },
- {
- MESA_FORMAT_R11_G11_B10_FLOAT,
- "MESA_FORMAT_R11_G11_B10_FLOAT",
- GL_RGB,
- GL_FLOAT,
- 11, 11, 10, 0,
- 0, 0, 0, 0, 0,
- 1, 1, 4
- },
- /* ARB_depth_buffer_float */
- {
- MESA_FORMAT_Z32_FLOAT, /* Name */
- "MESA_FORMAT_Z32_FLOAT", /* StrName */
- GL_DEPTH_COMPONENT, /* BaseFormat */
- GL_FLOAT, /* DataType */
- 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
- 0, 0, 0, 32, 0, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 4 /* BlockWidth/Height,Bytes */
- },
- {
- MESA_FORMAT_Z32_FLOAT_X24S8, /* Name */
- "MESA_FORMAT_Z32_FLOAT_X24S8", /* StrName */
- GL_DEPTH_STENCIL, /* BaseFormat */
- GL_NONE /* XXX */, /* DataType */
- 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
- 0, 0, 0, 32, 8, /* Lum/Int/Index/Depth/StencilBits */
- 1, 1, 8 /* BlockWidth/Height,Bytes */
- },
-};
-
-
-
-static const struct gl_format_info *
-_mesa_get_format_info(gl_format format)
-{
- const struct gl_format_info *info = &format_info[format];
- assert(info->Name == format);
- return info;
-}
-
-
-/** Return string name of format (for debugging) */
-const char *
-_mesa_get_format_name(gl_format format)
-{
- const struct gl_format_info *info = _mesa_get_format_info(format);
- return info->StrName;
-}
-
-
-
-/**
- * Return bytes needed to store a block of pixels in the given format.
- * Normally, a block is 1x1 (a single pixel). But for compressed formats
- * a block may be 4x4 or 8x4, etc.
- *
- * Note: not GLuint, so as not to coerce math to unsigned. cf. fdo #37351
- */
-GLint
-_mesa_get_format_bytes(gl_format format)
-{
- const struct gl_format_info *info = _mesa_get_format_info(format);
- ASSERT(info->BytesPerBlock);
- return info->BytesPerBlock;
-}
-
-
-/**
- * Return bits per component for the given format.
- * \param format one of MESA_FORMAT_x
- * \param pname the component, such as GL_RED_BITS, GL_TEXTURE_BLUE_BITS, etc.
- */
-GLint
-_mesa_get_format_bits(gl_format format, GLenum pname)
-{
- const struct gl_format_info *info = _mesa_get_format_info(format);
-
- switch (pname) {
- case GL_RED_BITS:
- case GL_TEXTURE_RED_SIZE:
- case GL_RENDERBUFFER_RED_SIZE_EXT:
- case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:
- return info->RedBits;
- case GL_GREEN_BITS:
- case GL_TEXTURE_GREEN_SIZE:
- case GL_RENDERBUFFER_GREEN_SIZE_EXT:
- case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:
- return info->GreenBits;
- case GL_BLUE_BITS:
- case GL_TEXTURE_BLUE_SIZE:
- case GL_RENDERBUFFER_BLUE_SIZE_EXT:
- case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:
- return info->BlueBits;
- case GL_ALPHA_BITS:
- case GL_TEXTURE_ALPHA_SIZE:
- case GL_RENDERBUFFER_ALPHA_SIZE_EXT:
- case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:
- return info->AlphaBits;
- case GL_TEXTURE_INTENSITY_SIZE:
- return info->IntensityBits;
- case GL_TEXTURE_LUMINANCE_SIZE:
- return info->LuminanceBits;
- case GL_INDEX_BITS:
- case GL_TEXTURE_INDEX_SIZE_EXT:
- return info->IndexBits;
- case GL_DEPTH_BITS:
- case GL_TEXTURE_DEPTH_SIZE_ARB:
- case GL_RENDERBUFFER_DEPTH_SIZE_EXT:
- case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
- return info->DepthBits;
- case GL_STENCIL_BITS:
- case GL_TEXTURE_STENCIL_SIZE_EXT:
- case GL_RENDERBUFFER_STENCIL_SIZE_EXT:
- case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:
- return info->StencilBits;
- default:
- _mesa_problem(NULL, "bad pname in _mesa_get_format_bits()");
- return 0;
- }
-}
-
-
-/**
- * Return the data type (or more specifically, the data representation)
- * for the given format.
- * The return value will be one of:
- * GL_UNSIGNED_NORMALIZED = unsigned int representing [0,1]
- * GL_SIGNED_NORMALIZED = signed int representing [-1, 1]
- * GL_UNSIGNED_INT = an ordinary unsigned integer
- * GL_INT = an ordinary signed integer
- * GL_FLOAT = an ordinary float
- */
-GLenum
-_mesa_get_format_datatype(gl_format format)
-{
- const struct gl_format_info *info = _mesa_get_format_info(format);
- return info->DataType;
-}
-
-
-/**
- * Return the basic format for the given type. The result will be one of
- * GL_RGB, GL_RGBA, GL_ALPHA, GL_LUMINANCE, GL_LUMINANCE_ALPHA, GL_INTENSITY,
- * GL_YCBCR_MESA, GL_DEPTH_COMPONENT, GL_STENCIL_INDEX, GL_DEPTH_STENCIL.
- */
-GLenum
-_mesa_get_format_base_format(gl_format format)
-{
- const struct gl_format_info *info = _mesa_get_format_info(format);
- return info->BaseFormat;
-}
-
-
-/**
- * Return the block size (in pixels) for the given format. Normally
- * the block size is 1x1. But compressed formats will have block sizes
- * of 4x4 or 8x4 pixels, etc.
- * \param bw returns block width in pixels
- * \param bh returns block height in pixels
- */
-void
-_mesa_get_format_block_size(gl_format format, GLuint *bw, GLuint *bh)
-{
- const struct gl_format_info *info = _mesa_get_format_info(format);
- *bw = info->BlockWidth;
- *bh = info->BlockHeight;
-}
-
-
-/** Is the given format a compressed format? */
-GLboolean
-_mesa_is_format_compressed(gl_format format)
-{
- const struct gl_format_info *info = _mesa_get_format_info(format);
- return info->BlockWidth > 1 || info->BlockHeight > 1;
-}
-
-
-/**
- * Determine if the given format represents a packed depth/stencil buffer.
- */
-GLboolean
-_mesa_is_format_packed_depth_stencil(gl_format format)
-{
- const struct gl_format_info *info = _mesa_get_format_info(format);
-
- return info->BaseFormat == GL_DEPTH_STENCIL;
-}
-
-
-/**
- * Is the given format a signed/unsigned integer color format?
- */
-GLboolean
-_mesa_is_format_integer_color(gl_format format)
-{
- const struct gl_format_info *info = _mesa_get_format_info(format);
- return (info->DataType == GL_INT || info->DataType == GL_UNSIGNED_INT) &&
- info->BaseFormat != GL_DEPTH_COMPONENT &&
- info->BaseFormat != GL_DEPTH_STENCIL &&
- info->BaseFormat != GL_STENCIL_INDEX;
-}
-
-
-/**
- * Return color encoding for given format.
- * \return GL_LINEAR or GL_SRGB
- */
-GLenum
-_mesa_get_format_color_encoding(gl_format format)
-{
- /* XXX this info should be encoded in gl_format_info */
- switch (format) {
- case MESA_FORMAT_SRGB8:
- case MESA_FORMAT_SRGBA8:
- case MESA_FORMAT_SARGB8:
- case MESA_FORMAT_SL8:
- case MESA_FORMAT_SLA8:
- case MESA_FORMAT_SRGB_DXT1:
- case MESA_FORMAT_SRGBA_DXT1:
- case MESA_FORMAT_SRGBA_DXT3:
- case MESA_FORMAT_SRGBA_DXT5:
- return GL_SRGB;
- default:
- return GL_LINEAR;
- }
-}
-
-
-/**
- * For an sRGB format, return the corresponding linear color space format.
- * For non-sRGB formats, return the format as-is.
- */
-gl_format
-_mesa_get_srgb_format_linear(gl_format format)
-{
- switch (format) {
- case MESA_FORMAT_SRGB8:
- format = MESA_FORMAT_RGB888;
- break;
- case MESA_FORMAT_SRGBA8:
- format = MESA_FORMAT_RGBA8888;
- break;
- case MESA_FORMAT_SARGB8:
- format = MESA_FORMAT_ARGB8888;
- break;
- case MESA_FORMAT_SL8:
- format = MESA_FORMAT_L8;
- break;
- case MESA_FORMAT_SLA8:
- format = MESA_FORMAT_AL88;
- break;
- case MESA_FORMAT_SRGB_DXT1:
- format = MESA_FORMAT_RGB_DXT1;
- break;
- case MESA_FORMAT_SRGBA_DXT1:
- format = MESA_FORMAT_RGBA_DXT1;
- break;
- case MESA_FORMAT_SRGBA_DXT3:
- format = MESA_FORMAT_RGBA_DXT3;
- break;
- case MESA_FORMAT_SRGBA_DXT5:
- format = MESA_FORMAT_RGBA_DXT5;
- break;
- default:
- break;
- }
- return format;
-}
-
-
-/**
- * Return number of bytes needed to store an image of the given size
- * in the given format.
- */
-GLuint
-_mesa_format_image_size(gl_format format, GLsizei width,
- GLsizei height, GLsizei depth)
-{
- const struct gl_format_info *info = _mesa_get_format_info(format);
- /* Strictly speaking, a conditional isn't needed here */
- if (info->BlockWidth > 1 || info->BlockHeight > 1) {
- /* compressed format (2D only for now) */
- const GLuint bw = info->BlockWidth, bh = info->BlockHeight;
- const GLuint wblocks = (width + bw - 1) / bw;
- const GLuint hblocks = (height + bh - 1) / bh;
- const GLuint sz = wblocks * hblocks * info->BytesPerBlock;
- assert(depth == 1);
- return sz;
- }
- else {
- /* non-compressed */
- const GLuint sz = width * height * depth * info->BytesPerBlock;
- return sz;
- }
-}
-
-
-/**
- * Same as _mesa_format_image_size() but returns a 64-bit value to
- * accomodate very large textures.
- */
-uint64_t
-_mesa_format_image_size64(gl_format format, GLsizei width,
- GLsizei height, GLsizei depth)
-{
- const struct gl_format_info *info = _mesa_get_format_info(format);
- /* Strictly speaking, a conditional isn't needed here */
- if (info->BlockWidth > 1 || info->BlockHeight > 1) {
- /* compressed format (2D only for now) */
- const uint64_t bw = info->BlockWidth, bh = info->BlockHeight;
- const uint64_t wblocks = (width + bw - 1) / bw;
- const uint64_t hblocks = (height + bh - 1) / bh;
- const uint64_t sz = wblocks * hblocks * info->BytesPerBlock;
- assert(depth == 1);
- return sz;
- }
- else {
- /* non-compressed */
- const uint64_t sz = ((uint64_t) width *
- (uint64_t) height *
- (uint64_t) depth *
- info->BytesPerBlock);
- return sz;
- }
-}
-
-
-
-GLint
-_mesa_format_row_stride(gl_format format, GLsizei width)
-{
- const struct gl_format_info *info = _mesa_get_format_info(format);
- /* Strictly speaking, a conditional isn't needed here */
- if (info->BlockWidth > 1 || info->BlockHeight > 1) {
- /* compressed format */
- const GLuint bw = info->BlockWidth;
- const GLuint wblocks = (width + bw - 1) / bw;
- const GLint stride = wblocks * info->BytesPerBlock;
- return stride;
- }
- else {
- const GLint stride = width * info->BytesPerBlock;
- return stride;
- }
-}
-
-
-/**
- * Debug/test: check that all formats are handled in the
- * _mesa_format_to_type_and_comps() function. When new pixel formats
- * are added to Mesa, that function needs to be updated.
- * This is a no-op after the first call.
- */
-static void
-check_format_to_type_and_comps(void)
-{
- gl_format f;
-
- for (f = MESA_FORMAT_NONE + 1; f < MESA_FORMAT_COUNT; f++) {
- GLenum datatype = 0;
- GLuint comps = 0;
- /* This function will emit a problem/warning if the format is
- * not handled.
- */
- _mesa_format_to_type_and_comps(f, &datatype, &comps);
- }
-}
-
-
-/**
- * Do sanity checking of the format info table.
- */
-void
-_mesa_test_formats(void)
-{
- GLuint i;
-
- assert(Elements(format_info) == MESA_FORMAT_COUNT);
-
- for (i = 0; i < MESA_FORMAT_COUNT; i++) {
- const struct gl_format_info *info = _mesa_get_format_info(i);
- assert(info);
-
- assert(info->Name == i);
-
- if (info->Name == MESA_FORMAT_NONE)
- continue;
-
- if (info->BlockWidth == 1 && info->BlockHeight == 1) {
- if (info->RedBits > 0) {
- GLuint t = info->RedBits + info->GreenBits
- + info->BlueBits + info->AlphaBits;
- assert(t / 8 <= info->BytesPerBlock);
- (void) t;
- }
- }
-
- assert(info->DataType == GL_UNSIGNED_NORMALIZED ||
- info->DataType == GL_SIGNED_NORMALIZED ||
- info->DataType == GL_UNSIGNED_INT ||
- info->DataType == GL_INT ||
- info->DataType == GL_FLOAT ||
- /* Z32_FLOAT_X24S8 has DataType of GL_NONE */
- info->DataType == GL_NONE);
-
- if (info->BaseFormat == GL_RGB) {
- assert(info->RedBits > 0);
- assert(info->GreenBits > 0);
- assert(info->BlueBits > 0);
- assert(info->AlphaBits == 0);
- assert(info->LuminanceBits == 0);
- assert(info->IntensityBits == 0);
- }
- else if (info->BaseFormat == GL_RGBA) {
- assert(info->RedBits > 0);
- assert(info->GreenBits > 0);
- assert(info->BlueBits > 0);
- assert(info->AlphaBits > 0);
- assert(info->LuminanceBits == 0);
- assert(info->IntensityBits == 0);
- }
- else if (info->BaseFormat == GL_RG) {
- assert(info->RedBits > 0);
- assert(info->GreenBits > 0);
- assert(info->BlueBits == 0);
- assert(info->AlphaBits == 0);
- assert(info->LuminanceBits == 0);
- assert(info->IntensityBits == 0);
- }
- else if (info->BaseFormat == GL_RED) {
- assert(info->RedBits > 0);
- assert(info->GreenBits == 0);
- assert(info->BlueBits == 0);
- assert(info->AlphaBits == 0);
- assert(info->LuminanceBits == 0);
- assert(info->IntensityBits == 0);
- }
- else if (info->BaseFormat == GL_LUMINANCE) {
- assert(info->RedBits == 0);
- assert(info->GreenBits == 0);
- assert(info->BlueBits == 0);
- assert(info->AlphaBits == 0);
- assert(info->LuminanceBits > 0);
- assert(info->IntensityBits == 0);
- }
- else if (info->BaseFormat == GL_INTENSITY) {
- assert(info->RedBits == 0);
- assert(info->GreenBits == 0);
- assert(info->BlueBits == 0);
- assert(info->AlphaBits == 0);
- assert(info->LuminanceBits == 0);
- assert(info->IntensityBits > 0);
- }
- }
-
- check_format_to_type_and_comps();
-}
-
-
-
-/**
- * Return datatype and number of components per texel for the given gl_format.
- * Only used for mipmap generation code.
- */
-void
-_mesa_format_to_type_and_comps(gl_format format,
- GLenum *datatype, GLuint *comps)
-{
- switch (format) {
- case MESA_FORMAT_RGBA8888:
- case MESA_FORMAT_RGBA8888_REV:
- case MESA_FORMAT_ARGB8888:
- case MESA_FORMAT_ARGB8888_REV:
- case MESA_FORMAT_XRGB8888:
- case MESA_FORMAT_XRGB8888_REV:
- *datatype = GL_UNSIGNED_BYTE;
- *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_ARGB2101010:
- *datatype = GL_UNSIGNED_INT_2_10_10_10_REV;
- *comps = 4;
- return;
-
- case MESA_FORMAT_RGBA5551:
- *datatype = GL_UNSIGNED_SHORT_5_5_5_1;
- *comps = 4;
- return;
-
- case MESA_FORMAT_AL44:
- *datatype = MESA_UNSIGNED_BYTE_4_4;
- *comps = 2;
- return;
-
- case MESA_FORMAT_AL88:
- case MESA_FORMAT_AL88_REV:
- case MESA_FORMAT_RG88:
- case MESA_FORMAT_RG88_REV:
- *datatype = GL_UNSIGNED_BYTE;
- *comps = 2;
- return;
-
- case MESA_FORMAT_AL1616:
- case MESA_FORMAT_AL1616_REV:
- case MESA_FORMAT_RG1616:
- case MESA_FORMAT_RG1616_REV:
- *datatype = GL_UNSIGNED_SHORT;
- *comps = 2;
- return;
-
- case MESA_FORMAT_R16:
- case MESA_FORMAT_A16:
- case MESA_FORMAT_L16:
- case MESA_FORMAT_I16:
- *datatype = GL_UNSIGNED_SHORT;
- *comps = 1;
- 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_R8:
- case MESA_FORMAT_S8:
- *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_X8_Z24:
- *datatype = GL_UNSIGNED_INT;
- *comps = 1;
- return;
-
- case MESA_FORMAT_Z24_X8:
- *datatype = GL_UNSIGNED_INT;
- *comps = 1;
- return;
-
- case MESA_FORMAT_Z32:
- *datatype = GL_UNSIGNED_INT;
- *comps = 1;
- return;
-
- case MESA_FORMAT_Z32_FLOAT:
- *datatype = GL_FLOAT;
- *comps = 1;
- return;
-
- case MESA_FORMAT_Z32_FLOAT_X24S8:
- *datatype = GL_FLOAT_32_UNSIGNED_INT_24_8_REV;
- *comps = 1;
- return;
-
- case MESA_FORMAT_DUDV8:
- *datatype = GL_BYTE;
- *comps = 2;
- return;
-
- case MESA_FORMAT_SIGNED_R8:
- case MESA_FORMAT_SIGNED_A8:
- case MESA_FORMAT_SIGNED_L8:
- case MESA_FORMAT_SIGNED_I8:
- *datatype = GL_BYTE;
- *comps = 1;
- return;
- case MESA_FORMAT_SIGNED_RG88_REV:
- case MESA_FORMAT_SIGNED_AL88:
- *datatype = GL_BYTE;
- *comps = 2;
- return;
- case MESA_FORMAT_SIGNED_RGBA8888:
- case MESA_FORMAT_SIGNED_RGBA8888_REV:
- case MESA_FORMAT_SIGNED_RGBX8888:
- *datatype = GL_BYTE;
- *comps = 4;
- return;
-
- case MESA_FORMAT_RGBA_16:
- *datatype = GL_UNSIGNED_SHORT;
- *comps = 4;
- return;
-
- case MESA_FORMAT_SIGNED_R16:
- case MESA_FORMAT_SIGNED_A16:
- case MESA_FORMAT_SIGNED_L16:
- case MESA_FORMAT_SIGNED_I16:
- *datatype = GL_SHORT;
- *comps = 1;
- return;
- case MESA_FORMAT_SIGNED_GR1616:
- case MESA_FORMAT_SIGNED_AL1616:
- *datatype = GL_SHORT;
- *comps = 2;
- return;
- case MESA_FORMAT_SIGNED_RGB_16:
- *datatype = GL_SHORT;
- *comps = 3;
- return;
- case MESA_FORMAT_SIGNED_RGBA_16:
- *datatype = GL_SHORT;
- *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
-#endif
- case MESA_FORMAT_RED_RGTC1:
- case MESA_FORMAT_SIGNED_RED_RGTC1:
- case MESA_FORMAT_RG_RGTC2:
- case MESA_FORMAT_SIGNED_RG_RGTC2:
- case MESA_FORMAT_L_LATC1:
- case MESA_FORMAT_SIGNED_L_LATC1:
- case MESA_FORMAT_LA_LATC2:
- case MESA_FORMAT_SIGNED_LA_LATC2:
- /* XXX generate error instead? */
- *datatype = GL_UNSIGNED_BYTE;
- *comps = 0;
- 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:
- case MESA_FORMAT_RG_FLOAT32:
- *datatype = GL_FLOAT;
- *comps = 2;
- return;
- case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16:
- case MESA_FORMAT_RG_FLOAT16:
- *datatype = GL_HALF_FLOAT_ARB;
- *comps = 2;
- return;
- case MESA_FORMAT_ALPHA_FLOAT32:
- case MESA_FORMAT_LUMINANCE_FLOAT32:
- case MESA_FORMAT_INTENSITY_FLOAT32:
- case MESA_FORMAT_R_FLOAT32:
- *datatype = GL_FLOAT;
- *comps = 1;
- return;
- case MESA_FORMAT_ALPHA_FLOAT16:
- case MESA_FORMAT_LUMINANCE_FLOAT16:
- case MESA_FORMAT_INTENSITY_FLOAT16:
- case MESA_FORMAT_R_FLOAT16:
- *datatype = GL_HALF_FLOAT_ARB;
- *comps = 1;
- return;
-
- case MESA_FORMAT_RGBA_INT8:
- *datatype = GL_BYTE;
- *comps = 4;
- return;
- case MESA_FORMAT_RGBA_INT16:
- *datatype = GL_SHORT;
- *comps = 4;
- return;
- case MESA_FORMAT_RGBA_INT32:
- *datatype = GL_INT;
- *comps = 4;
- return;
-
- /**
- * \name Non-normalized unsigned integer formats.
- */
- case MESA_FORMAT_RGBA_UINT8:
- *datatype = GL_UNSIGNED_BYTE;
- *comps = 4;
- return;
- case MESA_FORMAT_RGBA_UINT16:
- *datatype = GL_UNSIGNED_SHORT;
- *comps = 4;
- return;
- case MESA_FORMAT_RGBA_UINT32:
- *datatype = GL_UNSIGNED_INT;
- *comps = 4;
- return;
-
- case MESA_FORMAT_RGB9_E5_FLOAT:
- *datatype = GL_UNSIGNED_INT_5_9_9_9_REV;
- *comps = 3;
- return;
-
- case MESA_FORMAT_R11_G11_B10_FLOAT:
- *datatype = GL_UNSIGNED_INT_10F_11F_11F_REV;
- *comps = 3;
- return;
-
- case MESA_FORMAT_COUNT:
- assert(0);
- return;
-
- case MESA_FORMAT_NONE:
- /* For debug builds, warn if any formats are not handled */
-#ifdef DEBUG
- default:
-#endif
- _mesa_problem(NULL, "bad format %s in _mesa_format_to_type_and_comps",
- _mesa_get_format_name(format));
- *datatype = 0;
- *comps = 1;
- }
-}
+/*
+ * 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.
+ */
+
+
+#include "imports.h"
+#include "formats.h"
+#include "mfeatures.h"
+
+
+/**
+ * Information about texture formats.
+ */
+struct gl_format_info
+{
+ gl_format Name;
+
+ /** text name for debugging */
+ const char *StrName;
+
+ /**
+ * Base format is one of GL_RED, GL_RG, GL_RGB, GL_RGBA, GL_ALPHA,
+ * GL_LUMINANCE, GL_LUMINANCE_ALPHA, GL_INTENSITY, GL_YCBCR_MESA,
+ * GL_DEPTH_COMPONENT, GL_STENCIL_INDEX, GL_DEPTH_STENCIL, GL_DUDV_ATI.
+ */
+ GLenum BaseFormat;
+
+ /**
+ * Logical data type: one of GL_UNSIGNED_NORMALIZED, GL_SIGNED_NORMALIZED,
+ * GL_UNSIGNED_INT, GL_INT, GL_FLOAT.
+ */
+ GLenum DataType;
+
+ GLubyte RedBits;
+ GLubyte GreenBits;
+ GLubyte BlueBits;
+ GLubyte AlphaBits;
+ GLubyte LuminanceBits;
+ GLubyte IntensityBits;
+ GLubyte IndexBits;
+ GLubyte DepthBits;
+ GLubyte StencilBits;
+
+ /**
+ * To describe compressed formats. If not compressed, Width=Height=1.
+ */
+ GLubyte BlockWidth, BlockHeight;
+ GLubyte BytesPerBlock;
+};
+
+
+/**
+ * Info about each format.
+ * These must be in the same order as the MESA_FORMAT_* enums so that
+ * we can do lookups without searching.
+ */
+static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
+{
+ {
+ MESA_FORMAT_NONE, /* Name */
+ "MESA_FORMAT_NONE", /* StrName */
+ GL_NONE, /* BaseFormat */
+ GL_NONE, /* DataType */
+ 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 0, 0, 0 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_RGBA8888, /* Name */
+ "MESA_FORMAT_RGBA8888", /* StrName */
+ GL_RGBA, /* BaseFormat */
+ GL_UNSIGNED_NORMALIZED, /* DataType */
+ 8, 8, 8, 8, /* Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 4 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_RGBA8888_REV, /* Name */
+ "MESA_FORMAT_RGBA8888_REV", /* StrName */
+ GL_RGBA, /* BaseFormat */
+ GL_UNSIGNED_NORMALIZED, /* DataType */
+ 8, 8, 8, 8, /* Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 4 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_ARGB8888, /* Name */
+ "MESA_FORMAT_ARGB8888", /* StrName */
+ GL_RGBA, /* BaseFormat */
+ GL_UNSIGNED_NORMALIZED, /* DataType */
+ 8, 8, 8, 8, /* Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 4 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_ARGB8888_REV, /* Name */
+ "MESA_FORMAT_ARGB8888_REV", /* StrName */
+ GL_RGBA, /* BaseFormat */
+ GL_UNSIGNED_NORMALIZED, /* DataType */
+ 8, 8, 8, 8, /* Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 4 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_XRGB8888, /* Name */
+ "MESA_FORMAT_XRGB8888", /* StrName */
+ GL_RGB, /* BaseFormat */
+ GL_UNSIGNED_NORMALIZED, /* DataType */
+ 8, 8, 8, 0, /* Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 4 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_XRGB8888_REV, /* Name */
+ "MESA_FORMAT_XRGB8888_REV", /* StrName */
+ GL_RGB, /* BaseFormat */
+ GL_UNSIGNED_NORMALIZED, /* DataType */
+ 8, 8, 8, 0, /* Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 4 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_RGB888, /* Name */
+ "MESA_FORMAT_RGB888", /* StrName */
+ GL_RGB, /* BaseFormat */
+ GL_UNSIGNED_NORMALIZED, /* DataType */
+ 8, 8, 8, 0, /* Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 3 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_BGR888, /* Name */
+ "MESA_FORMAT_BGR888", /* StrName */
+ GL_RGB, /* BaseFormat */
+ GL_UNSIGNED_NORMALIZED, /* DataType */
+ 8, 8, 8, 0, /* Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 3 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_RGB565, /* Name */
+ "MESA_FORMAT_RGB565", /* StrName */
+ GL_RGB, /* BaseFormat */
+ GL_UNSIGNED_NORMALIZED, /* DataType */
+ 5, 6, 5, 0, /* Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 2 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_RGB565_REV, /* Name */
+ "MESA_FORMAT_RGB565_REV", /* StrName */
+ GL_RGB, /* BaseFormat */
+ GL_UNSIGNED_NORMALIZED, /* DataType */
+ 5, 6, 5, 0, /* Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 2 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_ARGB4444, /* Name */
+ "MESA_FORMAT_ARGB4444", /* StrName */
+ GL_RGBA, /* BaseFormat */
+ GL_UNSIGNED_NORMALIZED, /* DataType */
+ 4, 4, 4, 4, /* Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 2 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_ARGB4444_REV, /* Name */
+ "MESA_FORMAT_ARGB4444_REV", /* StrName */
+ GL_RGBA, /* BaseFormat */
+ GL_UNSIGNED_NORMALIZED, /* DataType */
+ 4, 4, 4, 4, /* Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 2 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_RGBA5551, /* Name */
+ "MESA_FORMAT_RGBA5551", /* StrName */
+ GL_RGBA, /* BaseFormat */
+ GL_UNSIGNED_NORMALIZED, /* DataType */
+ 5, 5, 5, 1, /* Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 2 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_ARGB1555, /* Name */
+ "MESA_FORMAT_ARGB1555", /* StrName */
+ GL_RGBA, /* BaseFormat */
+ GL_UNSIGNED_NORMALIZED, /* DataType */
+ 5, 5, 5, 1, /* Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 2 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_ARGB1555_REV, /* Name */
+ "MESA_FORMAT_ARGB1555_REV", /* StrName */
+ GL_RGBA, /* BaseFormat */
+ GL_UNSIGNED_NORMALIZED, /* DataType */
+ 5, 5, 5, 1, /* Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 2 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_AL44, /* Name */
+ "MESA_FORMAT_AL44", /* StrName */
+ GL_LUMINANCE_ALPHA, /* BaseFormat */
+ GL_UNSIGNED_NORMALIZED, /* DataType */
+ 0, 0, 0, 4, /* Red/Green/Blue/AlphaBits */
+ 4, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 1 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_AL88, /* Name */
+ "MESA_FORMAT_AL88", /* StrName */
+ GL_LUMINANCE_ALPHA, /* BaseFormat */
+ GL_UNSIGNED_NORMALIZED, /* DataType */
+ 0, 0, 0, 8, /* Red/Green/Blue/AlphaBits */
+ 8, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 2 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_AL88_REV, /* Name */
+ "MESA_FORMAT_AL88_REV", /* StrName */
+ GL_LUMINANCE_ALPHA, /* BaseFormat */
+ GL_UNSIGNED_NORMALIZED, /* DataType */
+ 0, 0, 0, 8, /* Red/Green/Blue/AlphaBits */
+ 8, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 2 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_AL1616, /* Name */
+ "MESA_FORMAT_AL1616", /* StrName */
+ GL_LUMINANCE_ALPHA, /* BaseFormat */
+ GL_UNSIGNED_NORMALIZED, /* DataType */
+ 0, 0, 0, 16, /* Red/Green/Blue/AlphaBits */
+ 16, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 4 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_AL1616_REV, /* Name */
+ "MESA_FORMAT_AL1616_REV", /* StrName */
+ GL_LUMINANCE_ALPHA, /* BaseFormat */
+ GL_UNSIGNED_NORMALIZED, /* DataType */
+ 0, 0, 0, 16, /* Red/Green/Blue/AlphaBits */
+ 16, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 4 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_RGB332, /* Name */
+ "MESA_FORMAT_RGB332", /* StrName */
+ GL_RGB, /* BaseFormat */
+ GL_UNSIGNED_NORMALIZED, /* DataType */
+ 3, 3, 2, 0, /* Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 1 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_A8, /* Name */
+ "MESA_FORMAT_A8", /* StrName */
+ GL_ALPHA, /* BaseFormat */
+ GL_UNSIGNED_NORMALIZED, /* DataType */
+ 0, 0, 0, 8, /* Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 1 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_A16, /* Name */
+ "MESA_FORMAT_A16", /* StrName */
+ GL_ALPHA, /* BaseFormat */
+ GL_UNSIGNED_NORMALIZED, /* DataType */
+ 0, 0, 0, 16, /* Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 2 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_L8, /* Name */
+ "MESA_FORMAT_L8", /* StrName */
+ GL_LUMINANCE, /* BaseFormat */
+ GL_UNSIGNED_NORMALIZED, /* DataType */
+ 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
+ 8, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 1 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_L16, /* Name */
+ "MESA_FORMAT_L16", /* StrName */
+ GL_LUMINANCE, /* BaseFormat */
+ GL_UNSIGNED_NORMALIZED, /* DataType */
+ 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
+ 16, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 2 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_I8, /* Name */
+ "MESA_FORMAT_I8", /* StrName */
+ GL_INTENSITY, /* BaseFormat */
+ GL_UNSIGNED_NORMALIZED, /* DataType */
+ 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
+ 0, 8, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 1 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_I16, /* Name */
+ "MESA_FORMAT_I16", /* StrName */
+ GL_INTENSITY, /* BaseFormat */
+ GL_UNSIGNED_NORMALIZED, /* DataType */
+ 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
+ 0, 16, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 2 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_YCBCR, /* Name */
+ "MESA_FORMAT_YCBCR", /* StrName */
+ GL_YCBCR_MESA, /* BaseFormat */
+ GL_UNSIGNED_NORMALIZED, /* DataType */
+ 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 2 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_YCBCR_REV, /* Name */
+ "MESA_FORMAT_YCBCR_REV", /* StrName */
+ GL_YCBCR_MESA, /* BaseFormat */
+ GL_UNSIGNED_NORMALIZED, /* DataType */
+ 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 2 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_R8,
+ "MESA_FORMAT_R8",
+ GL_RED,
+ GL_UNSIGNED_NORMALIZED,
+ 8, 0, 0, 0,
+ 0, 0, 0, 0, 0,
+ 1, 1, 1
+ },
+ {
+ MESA_FORMAT_RG88,
+ "MESA_FORMAT_RG88",
+ GL_RG,
+ GL_UNSIGNED_NORMALIZED,
+ 8, 8, 0, 0,
+ 0, 0, 0, 0, 0,
+ 1, 1, 2
+ },
+ {
+ MESA_FORMAT_RG88_REV,
+ "MESA_FORMAT_RG88_REV",
+ GL_RG,
+ GL_UNSIGNED_NORMALIZED,
+ 8, 8, 0, 0,
+ 0, 0, 0, 0, 0,
+ 1, 1, 2
+ },
+ {
+ MESA_FORMAT_R16,
+ "MESA_FORMAT_R16",
+ GL_RED,
+ GL_UNSIGNED_NORMALIZED,
+ 16, 0, 0, 0,
+ 0, 0, 0, 0, 0,
+ 1, 1, 2
+ },
+ {
+ MESA_FORMAT_RG1616,
+ "MESA_FORMAT_RG1616",
+ GL_RG,
+ GL_UNSIGNED_NORMALIZED,
+ 16, 16, 0, 0,
+ 0, 0, 0, 0, 0,
+ 1, 1, 4
+ },
+ {
+ MESA_FORMAT_RG1616_REV,
+ "MESA_FORMAT_RG1616_REV",
+ GL_RG,
+ GL_UNSIGNED_NORMALIZED,
+ 16, 16, 0, 0,
+ 0, 0, 0, 0, 0,
+ 1, 1, 4
+ },
+ {
+ MESA_FORMAT_ARGB2101010,
+ "MESA_FORMAT_ARGB2101010",
+ GL_RGBA,
+ GL_UNSIGNED_NORMALIZED,
+ 10, 10, 10, 2,
+ 0, 0, 0, 0, 0,
+ 1, 1, 4
+ },
+ {
+ MESA_FORMAT_Z24_S8, /* Name */
+ "MESA_FORMAT_Z24_S8", /* StrName */
+ GL_DEPTH_STENCIL, /* BaseFormat */
+ GL_UNSIGNED_INT, /* DataType */
+ 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 24, 8, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 4 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_S8_Z24, /* Name */
+ "MESA_FORMAT_S8_Z24", /* StrName */
+ GL_DEPTH_STENCIL, /* BaseFormat */
+ GL_UNSIGNED_INT, /* DataType */
+ 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 24, 8, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 4 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_Z16, /* Name */
+ "MESA_FORMAT_Z16", /* StrName */
+ GL_DEPTH_COMPONENT, /* BaseFormat */
+ GL_UNSIGNED_INT, /* DataType */
+ 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 16, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 2 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_X8_Z24, /* Name */
+ "MESA_FORMAT_X8_Z24", /* StrName */
+ GL_DEPTH_COMPONENT, /* BaseFormat */
+ GL_UNSIGNED_INT, /* DataType */
+ 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 24, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 4 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_Z24_X8, /* Name */
+ "MESA_FORMAT_Z24_X8", /* StrName */
+ GL_DEPTH_COMPONENT, /* BaseFormat */
+ GL_UNSIGNED_INT, /* DataType */
+ 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 24, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 4 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_Z32, /* Name */
+ "MESA_FORMAT_Z32", /* StrName */
+ GL_DEPTH_COMPONENT, /* BaseFormat */
+ GL_UNSIGNED_INT, /* DataType */
+ 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 32, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 4 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_S8, /* Name */
+ "MESA_FORMAT_S8", /* StrName */
+ GL_STENCIL_INDEX, /* BaseFormat */
+ GL_UNSIGNED_INT, /* DataType */
+ 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 0, 8, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 1 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_SRGB8,
+ "MESA_FORMAT_SRGB8",
+ GL_RGB,
+ GL_UNSIGNED_NORMALIZED,
+ 8, 8, 8, 0,
+ 0, 0, 0, 0, 0,
+ 1, 1, 3
+ },
+ {
+ MESA_FORMAT_SRGBA8,
+ "MESA_FORMAT_SRGBA8",
+ GL_RGBA,
+ GL_UNSIGNED_NORMALIZED,
+ 8, 8, 8, 8,
+ 0, 0, 0, 0, 0,
+ 1, 1, 4
+ },
+ {
+ MESA_FORMAT_SARGB8,
+ "MESA_FORMAT_SARGB8",
+ GL_RGBA,
+ GL_UNSIGNED_NORMALIZED,
+ 8, 8, 8, 8,
+ 0, 0, 0, 0, 0,
+ 1, 1, 4
+ },
+ {
+ MESA_FORMAT_SL8,
+ "MESA_FORMAT_SL8",
+ GL_LUMINANCE,
+ GL_UNSIGNED_NORMALIZED,
+ 0, 0, 0, 0,
+ 8, 0, 0, 0, 0,
+ 1, 1, 1
+ },
+ {
+ MESA_FORMAT_SLA8,
+ "MESA_FORMAT_SLA8",
+ GL_LUMINANCE_ALPHA,
+ GL_UNSIGNED_NORMALIZED,
+ 0, 0, 0, 8,
+ 8, 0, 0, 0, 0,
+ 1, 1, 2
+ },
+ {
+ MESA_FORMAT_SRGB_DXT1, /* Name */
+ "MESA_FORMAT_SRGB_DXT1", /* StrName */
+ GL_RGB, /* BaseFormat */
+ GL_UNSIGNED_NORMALIZED, /* DataType */
+ 4, 4, 4, 0, /* approx Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 4, 4, 8 /* 8 bytes per 4x4 block */
+ },
+ {
+ MESA_FORMAT_SRGBA_DXT1,
+ "MESA_FORMAT_SRGBA_DXT1",
+ GL_RGBA,
+ GL_UNSIGNED_NORMALIZED,
+ 4, 4, 4, 4,
+ 0, 0, 0, 0, 0,
+ 4, 4, 8 /* 8 bytes per 4x4 block */
+ },
+ {
+ MESA_FORMAT_SRGBA_DXT3,
+ "MESA_FORMAT_SRGBA_DXT3",
+ GL_RGBA,
+ GL_UNSIGNED_NORMALIZED,
+ 4, 4, 4, 4,
+ 0, 0, 0, 0, 0,
+ 4, 4, 16 /* 16 bytes per 4x4 block */
+ },
+ {
+ MESA_FORMAT_SRGBA_DXT5,
+ "MESA_FORMAT_SRGBA_DXT5",
+ GL_RGBA,
+ GL_UNSIGNED_NORMALIZED,
+ 4, 4, 4, 4,
+ 0, 0, 0, 0, 0,
+ 4, 4, 16 /* 16 bytes per 4x4 block */
+ },
+
+ {
+ MESA_FORMAT_RGB_FXT1,
+ "MESA_FORMAT_RGB_FXT1",
+ GL_RGB,
+ GL_UNSIGNED_NORMALIZED,
+ 4, 4, 4, 0, /* approx Red/Green/BlueBits */
+ 0, 0, 0, 0, 0,
+ 8, 4, 16 /* 16 bytes per 8x4 block */
+ },
+ {
+ MESA_FORMAT_RGBA_FXT1,
+ "MESA_FORMAT_RGBA_FXT1",
+ GL_RGBA,
+ GL_UNSIGNED_NORMALIZED,
+ 4, 4, 4, 1, /* approx Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 0, 0,
+ 8, 4, 16 /* 16 bytes per 8x4 block */
+ },
+
+ {
+ MESA_FORMAT_RGB_DXT1, /* Name */
+ "MESA_FORMAT_RGB_DXT1", /* StrName */
+ GL_RGB, /* BaseFormat */
+ GL_UNSIGNED_NORMALIZED, /* DataType */
+ 4, 4, 4, 0, /* approx Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 4, 4, 8 /* 8 bytes per 4x4 block */
+ },
+ {
+ MESA_FORMAT_RGBA_DXT1,
+ "MESA_FORMAT_RGBA_DXT1",
+ GL_RGBA,
+ GL_UNSIGNED_NORMALIZED,
+ 4, 4, 4, 4,
+ 0, 0, 0, 0, 0,
+ 4, 4, 8 /* 8 bytes per 4x4 block */
+ },
+ {
+ MESA_FORMAT_RGBA_DXT3,
+ "MESA_FORMAT_RGBA_DXT3",
+ GL_RGBA,
+ GL_UNSIGNED_NORMALIZED,
+ 4, 4, 4, 4,
+ 0, 0, 0, 0, 0,
+ 4, 4, 16 /* 16 bytes per 4x4 block */
+ },
+ {
+ MESA_FORMAT_RGBA_DXT5,
+ "MESA_FORMAT_RGBA_DXT5",
+ GL_RGBA,
+ GL_UNSIGNED_NORMALIZED,
+ 4, 4, 4, 4,
+ 0, 0, 0, 0, 0,
+ 4, 4, 16 /* 16 bytes per 4x4 block */
+ },
+ {
+ MESA_FORMAT_RGBA_FLOAT32,
+ "MESA_FORMAT_RGBA_FLOAT32",
+ GL_RGBA,
+ GL_FLOAT,
+ 32, 32, 32, 32,
+ 0, 0, 0, 0, 0,
+ 1, 1, 16
+ },
+ {
+ MESA_FORMAT_RGBA_FLOAT16,
+ "MESA_FORMAT_RGBA_FLOAT16",
+ GL_RGBA,
+ GL_FLOAT,
+ 16, 16, 16, 16,
+ 0, 0, 0, 0, 0,
+ 1, 1, 8
+ },
+ {
+ MESA_FORMAT_RGB_FLOAT32,
+ "MESA_FORMAT_RGB_FLOAT32",
+ GL_RGB,
+ GL_FLOAT,
+ 32, 32, 32, 0,
+ 0, 0, 0, 0, 0,
+ 1, 1, 12
+ },
+ {
+ MESA_FORMAT_RGB_FLOAT16,
+ "MESA_FORMAT_RGB_FLOAT16",
+ GL_RGB,
+ GL_FLOAT,
+ 16, 16, 16, 0,
+ 0, 0, 0, 0, 0,
+ 1, 1, 6
+ },
+ {
+ MESA_FORMAT_ALPHA_FLOAT32,
+ "MESA_FORMAT_ALPHA_FLOAT32",
+ GL_ALPHA,
+ GL_FLOAT,
+ 0, 0, 0, 32,
+ 0, 0, 0, 0, 0,
+ 1, 1, 4
+ },
+ {
+ MESA_FORMAT_ALPHA_FLOAT16,
+ "MESA_FORMAT_ALPHA_FLOAT16",
+ GL_ALPHA,
+ GL_FLOAT,
+ 0, 0, 0, 16,
+ 0, 0, 0, 0, 0,
+ 1, 1, 2
+ },
+ {
+ MESA_FORMAT_LUMINANCE_FLOAT32,
+ "MESA_FORMAT_LUMINANCE_FLOAT32",
+ GL_LUMINANCE,
+ GL_FLOAT,
+ 0, 0, 0, 0,
+ 32, 0, 0, 0, 0,
+ 1, 1, 4
+ },
+ {
+ MESA_FORMAT_LUMINANCE_FLOAT16,
+ "MESA_FORMAT_LUMINANCE_FLOAT16",
+ GL_LUMINANCE,
+ GL_FLOAT,
+ 0, 0, 0, 0,
+ 16, 0, 0, 0, 0,
+ 1, 1, 2
+ },
+ {
+ MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32,
+ "MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32",
+ GL_LUMINANCE_ALPHA,
+ GL_FLOAT,
+ 0, 0, 0, 32,
+ 32, 0, 0, 0, 0,
+ 1, 1, 8
+ },
+ {
+ MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16,
+ "MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16",
+ GL_LUMINANCE_ALPHA,
+ GL_FLOAT,
+ 0, 0, 0, 16,
+ 16, 0, 0, 0, 0,
+ 1, 1, 4
+ },
+ {
+ MESA_FORMAT_INTENSITY_FLOAT32,
+ "MESA_FORMAT_INTENSITY_FLOAT32",
+ GL_INTENSITY,
+ GL_FLOAT,
+ 0, 0, 0, 0,
+ 0, 32, 0, 0, 0,
+ 1, 1, 4
+ },
+ {
+ MESA_FORMAT_INTENSITY_FLOAT16,
+ "MESA_FORMAT_INTENSITY_FLOAT16",
+ GL_INTENSITY,
+ GL_FLOAT,
+ 0, 0, 0, 0,
+ 0, 16, 0, 0, 0,
+ 1, 1, 2
+ },
+ {
+ MESA_FORMAT_R_FLOAT32,
+ "MESA_FORMAT_R_FLOAT32",
+ GL_RED,
+ GL_FLOAT,
+ 32, 0, 0, 0,
+ 0, 0, 0, 0, 0,
+ 1, 1, 4
+ },
+ {
+ MESA_FORMAT_R_FLOAT16,
+ "MESA_FORMAT_R_FLOAT16",
+ GL_RED,
+ GL_FLOAT,
+ 16, 0, 0, 0,
+ 0, 0, 0, 0, 0,
+ 1, 1, 2
+ },
+ {
+ MESA_FORMAT_RG_FLOAT32,
+ "MESA_FORMAT_RG_FLOAT32",
+ GL_RG,
+ GL_FLOAT,
+ 32, 32, 0, 0,
+ 0, 0, 0, 0, 0,
+ 1, 1, 8
+ },
+ {
+ MESA_FORMAT_RG_FLOAT16,
+ "MESA_FORMAT_RG_FLOAT16",
+ GL_RG,
+ GL_FLOAT,
+ 16, 16, 0, 0,
+ 0, 0, 0, 0, 0,
+ 1, 1, 4
+ },
+
+ /* unnormalized signed int formats */
+ {
+ MESA_FORMAT_RGBA_INT8,
+ "MESA_FORMAT_RGBA_INT8",
+ GL_RGBA,
+ GL_INT,
+ 8, 8, 8, 8,
+ 0, 0, 0, 0, 0,
+ 1, 1, 4
+ },
+ {
+ MESA_FORMAT_RGBA_INT16,
+ "MESA_FORMAT_RGBA_INT16",
+ GL_RGBA,
+ GL_INT,
+ 16, 16, 16, 16,
+ 0, 0, 0, 0, 0,
+ 1, 1, 8
+ },
+ {
+ MESA_FORMAT_RGBA_INT32,
+ "MESA_FORMAT_RGBA_INT32",
+ GL_RGBA,
+ GL_INT,
+ 32, 32, 32, 32,
+ 0, 0, 0, 0, 0,
+ 1, 1, 16
+ },
+
+ /* unnormalized unsigned int formats */
+ {
+ MESA_FORMAT_RGBA_UINT8,
+ "MESA_FORMAT_RGBA_UINT8",
+ GL_RGBA,
+ GL_UNSIGNED_INT,
+ 8, 8, 8, 8,
+ 0, 0, 0, 0, 0,
+ 1, 1, 4
+ },
+ {
+ MESA_FORMAT_RGBA_UINT16,
+ "MESA_FORMAT_RGBA_UINT16",
+ GL_RGBA,
+ GL_UNSIGNED_INT,
+ 16, 16, 16, 16,
+ 0, 0, 0, 0, 0,
+ 1, 1, 8
+ },
+ {
+ MESA_FORMAT_RGBA_UINT32,
+ "MESA_FORMAT_RGBA_UINT32",
+ GL_RGBA,
+ GL_UNSIGNED_INT,
+ 32, 32, 32, 32,
+ 0, 0, 0, 0, 0,
+ 1, 1, 16
+ },
+
+
+ {
+ MESA_FORMAT_DUDV8,
+ "MESA_FORMAT_DUDV8",
+ GL_DUDV_ATI,
+ GL_SIGNED_NORMALIZED,
+ 0, 0, 0, 0,
+ 0, 0, 0, 0, 0,
+ 1, 1, 2
+ },
+
+ /* Signed 8 bits / channel */
+ {
+ MESA_FORMAT_SIGNED_R8, /* Name */
+ "MESA_FORMAT_SIGNED_R8", /* StrName */
+ GL_RED, /* BaseFormat */
+ GL_SIGNED_NORMALIZED, /* DataType */
+ 8, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 1 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_SIGNED_RG88_REV,
+ "MESA_FORMAT_SIGNED_RG88_REV",
+ GL_RG,
+ GL_SIGNED_NORMALIZED,
+ 8, 8, 0, 0,
+ 0, 0, 0, 0, 0,
+ 1, 1, 2
+ },
+ {
+ MESA_FORMAT_SIGNED_RGBX8888,
+ "MESA_FORMAT_SIGNED_RGBX8888",
+ GL_RGB,
+ GL_SIGNED_NORMALIZED,
+ 8, 8, 8, 0,
+ 0, 0, 0, 0, 0,
+ 1, 1, 4 /* 4 bpp, but no alpha */
+ },
+ {
+ MESA_FORMAT_SIGNED_RGBA8888,
+ "MESA_FORMAT_SIGNED_RGBA8888",
+ GL_RGBA,
+ GL_SIGNED_NORMALIZED,
+ 8, 8, 8, 8,
+ 0, 0, 0, 0, 0,
+ 1, 1, 4
+ },
+ {
+ MESA_FORMAT_SIGNED_RGBA8888_REV,
+ "MESA_FORMAT_SIGNED_RGBA8888_REV",
+ GL_RGBA,
+ GL_SIGNED_NORMALIZED,
+ 8, 8, 8, 8,
+ 0, 0, 0, 0, 0,
+ 1, 1, 4
+ },
+
+ /* Signed 16 bits / channel */
+ {
+ MESA_FORMAT_SIGNED_R16,
+ "MESA_FORMAT_SIGNED_R16",
+ GL_RED,
+ GL_SIGNED_NORMALIZED,
+ 16, 0, 0, 0,
+ 0, 0, 0, 0, 0,
+ 1, 1, 2
+ },
+ {
+ MESA_FORMAT_SIGNED_GR1616,
+ "MESA_FORMAT_SIGNED_GR1616",
+ GL_RG,
+ GL_SIGNED_NORMALIZED,
+ 16, 16, 0, 0,
+ 0, 0, 0, 0, 0,
+ 1, 1, 4
+ },
+ {
+ MESA_FORMAT_SIGNED_RGB_16,
+ "MESA_FORMAT_SIGNED_RGB_16",
+ GL_RGB,
+ GL_SIGNED_NORMALIZED,
+ 16, 16, 16, 0,
+ 0, 0, 0, 0, 0,
+ 1, 1, 6
+ },
+ {
+ MESA_FORMAT_SIGNED_RGBA_16,
+ "MESA_FORMAT_SIGNED_RGBA_16",
+ GL_RGBA,
+ GL_SIGNED_NORMALIZED,
+ 16, 16, 16, 16,
+ 0, 0, 0, 0, 0,
+ 1, 1, 8
+ },
+ {
+ MESA_FORMAT_RGBA_16,
+ "MESA_FORMAT_RGBA_16",
+ GL_RGBA,
+ GL_UNSIGNED_NORMALIZED,
+ 16, 16, 16, 16,
+ 0, 0, 0, 0, 0,
+ 1, 1, 8
+ },
+ {
+ MESA_FORMAT_RED_RGTC1,
+ "MESA_FORMAT_RED_RGTC1",
+ GL_RED,
+ GL_UNSIGNED_NORMALIZED,
+ 4, 0, 0, 0,
+ 0, 0, 0, 0, 0,
+ 4, 4, 8 /* 8 bytes per 4x4 block */
+ },
+ {
+ MESA_FORMAT_SIGNED_RED_RGTC1,
+ "MESA_FORMAT_SIGNED_RED_RGTC1",
+ GL_RED,
+ GL_SIGNED_NORMALIZED,
+ 4, 0, 0, 0,
+ 0, 0, 0, 0, 0,
+ 4, 4, 8 /* 8 bytes per 4x4 block */
+ },
+ {
+ MESA_FORMAT_RG_RGTC2,
+ "MESA_FORMAT_RG_RGTC2",
+ GL_RG,
+ GL_UNSIGNED_NORMALIZED,
+ 4, 4, 0, 0,
+ 0, 0, 0, 0, 0,
+ 4, 4, 16 /* 16 bytes per 4x4 block */
+ },
+ {
+ MESA_FORMAT_SIGNED_RG_RGTC2,
+ "MESA_FORMAT_SIGNED_RG_RGTC2",
+ GL_RG,
+ GL_SIGNED_NORMALIZED,
+ 4, 4, 0, 0,
+ 0, 0, 0, 0, 0,
+ 4, 4, 16 /* 16 bytes per 4x4 block */
+ },
+ {
+ MESA_FORMAT_L_LATC1,
+ "MESA_FORMAT_L_LATC1",
+ GL_LUMINANCE,
+ GL_UNSIGNED_NORMALIZED,
+ 0, 0, 0, 0,
+ 4, 0, 0, 0, 0,
+ 4, 4, 8 /* 8 bytes per 4x4 block */
+ },
+ {
+ MESA_FORMAT_SIGNED_L_LATC1,
+ "MESA_FORMAT_SIGNED_L_LATC1",
+ GL_LUMINANCE,
+ GL_SIGNED_NORMALIZED,
+ 0, 0, 0, 0,
+ 4, 0, 0, 0, 0,
+ 4, 4, 8 /* 8 bytes per 4x4 block */
+ },
+ {
+ MESA_FORMAT_LA_LATC2,
+ "MESA_FORMAT_LA_LATC2",
+ GL_LUMINANCE_ALPHA,
+ GL_UNSIGNED_NORMALIZED,
+ 0, 0, 0, 4,
+ 4, 0, 0, 0, 0,
+ 4, 4, 16 /* 16 bytes per 4x4 block */
+ },
+ {
+ MESA_FORMAT_SIGNED_LA_LATC2,
+ "MESA_FORMAT_SIGNED_LA_LATC2",
+ GL_LUMINANCE_ALPHA,
+ GL_SIGNED_NORMALIZED,
+ 0, 0, 0, 4,
+ 4, 0, 0, 0, 0,
+ 4, 4, 16 /* 16 bytes per 4x4 block */
+ },
+
+ /* Signed formats from EXT_texture_snorm that are not in GL3.1 */
+ {
+ MESA_FORMAT_SIGNED_A8,
+ "MESA_FORMAT_SIGNED_A8",
+ GL_ALPHA,
+ GL_SIGNED_NORMALIZED,
+ 0, 0, 0, 8,
+ 0, 0, 0, 0, 0,
+ 1, 1, 1
+ },
+ {
+ MESA_FORMAT_SIGNED_L8,
+ "MESA_FORMAT_SIGNED_L8",
+ GL_LUMINANCE,
+ GL_SIGNED_NORMALIZED,
+ 0, 0, 0, 0,
+ 8, 0, 0, 0, 0,
+ 1, 1, 1
+ },
+ {
+ MESA_FORMAT_SIGNED_AL88,
+ "MESA_FORMAT_SIGNED_AL88",
+ GL_LUMINANCE_ALPHA,
+ GL_SIGNED_NORMALIZED,
+ 0, 0, 0, 8,
+ 8, 0, 0, 0, 0,
+ 1, 1, 2
+ },
+ {
+ MESA_FORMAT_SIGNED_I8,
+ "MESA_FORMAT_SIGNED_I8",
+ GL_INTENSITY,
+ GL_SIGNED_NORMALIZED,
+ 0, 0, 0, 0,
+ 0, 8, 0, 0, 0,
+ 1, 1, 1
+ },
+ {
+ MESA_FORMAT_SIGNED_A16,
+ "MESA_FORMAT_SIGNED_A16",
+ GL_ALPHA,
+ GL_SIGNED_NORMALIZED,
+ 0, 0, 0, 16,
+ 0, 0, 0, 0, 0,
+ 1, 1, 2
+ },
+ {
+ MESA_FORMAT_SIGNED_L16,
+ "MESA_FORMAT_SIGNED_L16",
+ GL_LUMINANCE,
+ GL_SIGNED_NORMALIZED,
+ 0, 0, 0, 0,
+ 16, 0, 0, 0, 0,
+ 1, 1, 2
+ },
+ {
+ MESA_FORMAT_SIGNED_AL1616,
+ "MESA_FORMAT_SIGNED_AL1616",
+ GL_LUMINANCE_ALPHA,
+ GL_SIGNED_NORMALIZED,
+ 0, 0, 0, 16,
+ 16, 0, 0, 0, 0,
+ 1, 1, 4
+ },
+ {
+ MESA_FORMAT_SIGNED_I16,
+ "MESA_FORMAT_SIGNED_I16",
+ GL_INTENSITY,
+ GL_SIGNED_NORMALIZED,
+ 0, 0, 0, 0,
+ 0, 16, 0, 0, 0,
+ 1, 1, 2
+ },
+ {
+ MESA_FORMAT_RGB9_E5_FLOAT,
+ "MESA_FORMAT_RGB9_E5",
+ GL_RGB,
+ GL_FLOAT,
+ 9, 9, 9, 0,
+ 0, 0, 0, 0, 0,
+ 1, 1, 4
+ },
+ {
+ MESA_FORMAT_R11_G11_B10_FLOAT,
+ "MESA_FORMAT_R11_G11_B10_FLOAT",
+ GL_RGB,
+ GL_FLOAT,
+ 11, 11, 10, 0,
+ 0, 0, 0, 0, 0,
+ 1, 1, 4
+ },
+ /* ARB_depth_buffer_float */
+ {
+ MESA_FORMAT_Z32_FLOAT, /* Name */
+ "MESA_FORMAT_Z32_FLOAT", /* StrName */
+ GL_DEPTH_COMPONENT, /* BaseFormat */
+ GL_FLOAT, /* DataType */
+ 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 32, 0, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 4 /* BlockWidth/Height,Bytes */
+ },
+ {
+ MESA_FORMAT_Z32_FLOAT_X24S8, /* Name */
+ "MESA_FORMAT_Z32_FLOAT_X24S8", /* StrName */
+ GL_DEPTH_STENCIL, /* BaseFormat */
+ GL_NONE /* XXX */, /* DataType */
+ 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
+ 0, 0, 0, 32, 8, /* Lum/Int/Index/Depth/StencilBits */
+ 1, 1, 8 /* BlockWidth/Height,Bytes */
+ },
+};
+
+
+
+static const struct gl_format_info *
+_mesa_get_format_info(gl_format format)
+{
+ const struct gl_format_info *info = &format_info[format];
+ assert(info->Name == format);
+ return info;
+}
+
+
+/** Return string name of format (for debugging) */
+const char *
+_mesa_get_format_name(gl_format format)
+{
+ const struct gl_format_info *info = _mesa_get_format_info(format);
+ return info->StrName;
+}
+
+
+
+/**
+ * Return bytes needed to store a block of pixels in the given format.
+ * Normally, a block is 1x1 (a single pixel). But for compressed formats
+ * a block may be 4x4 or 8x4, etc.
+ *
+ * Note: not GLuint, so as not to coerce math to unsigned. cf. fdo #37351
+ */
+GLint
+_mesa_get_format_bytes(gl_format format)
+{
+ const struct gl_format_info *info = _mesa_get_format_info(format);
+ ASSERT(info->BytesPerBlock);
+ return info->BytesPerBlock;
+}
+
+
+/**
+ * Return bits per component for the given format.
+ * \param format one of MESA_FORMAT_x
+ * \param pname the component, such as GL_RED_BITS, GL_TEXTURE_BLUE_BITS, etc.
+ */
+GLint
+_mesa_get_format_bits(gl_format format, GLenum pname)
+{
+ const struct gl_format_info *info = _mesa_get_format_info(format);
+
+ switch (pname) {
+ case GL_RED_BITS:
+ case GL_TEXTURE_RED_SIZE:
+ case GL_RENDERBUFFER_RED_SIZE_EXT:
+ case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:
+ return info->RedBits;
+ case GL_GREEN_BITS:
+ case GL_TEXTURE_GREEN_SIZE:
+ case GL_RENDERBUFFER_GREEN_SIZE_EXT:
+ case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:
+ return info->GreenBits;
+ case GL_BLUE_BITS:
+ case GL_TEXTURE_BLUE_SIZE:
+ case GL_RENDERBUFFER_BLUE_SIZE_EXT:
+ case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:
+ return info->BlueBits;
+ case GL_ALPHA_BITS:
+ case GL_TEXTURE_ALPHA_SIZE:
+ case GL_RENDERBUFFER_ALPHA_SIZE_EXT:
+ case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:
+ return info->AlphaBits;
+ case GL_TEXTURE_INTENSITY_SIZE:
+ return info->IntensityBits;
+ case GL_TEXTURE_LUMINANCE_SIZE:
+ return info->LuminanceBits;
+ case GL_INDEX_BITS:
+ case GL_TEXTURE_INDEX_SIZE_EXT:
+ return info->IndexBits;
+ case GL_DEPTH_BITS:
+ case GL_TEXTURE_DEPTH_SIZE_ARB:
+ case GL_RENDERBUFFER_DEPTH_SIZE_EXT:
+ case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
+ return info->DepthBits;
+ case GL_STENCIL_BITS:
+ case GL_TEXTURE_STENCIL_SIZE_EXT:
+ case GL_RENDERBUFFER_STENCIL_SIZE_EXT:
+ case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:
+ return info->StencilBits;
+ default:
+ _mesa_problem(NULL, "bad pname in _mesa_get_format_bits()");
+ return 0;
+ }
+}
+
+
+/**
+ * Return the data type (or more specifically, the data representation)
+ * for the given format.
+ * The return value will be one of:
+ * GL_UNSIGNED_NORMALIZED = unsigned int representing [0,1]
+ * GL_SIGNED_NORMALIZED = signed int representing [-1, 1]
+ * GL_UNSIGNED_INT = an ordinary unsigned integer
+ * GL_INT = an ordinary signed integer
+ * GL_FLOAT = an ordinary float
+ */
+GLenum
+_mesa_get_format_datatype(gl_format format)
+{
+ const struct gl_format_info *info = _mesa_get_format_info(format);
+ return info->DataType;
+}
+
+
+/**
+ * Return the basic format for the given type. The result will be one of
+ * GL_RGB, GL_RGBA, GL_ALPHA, GL_LUMINANCE, GL_LUMINANCE_ALPHA, GL_INTENSITY,
+ * GL_YCBCR_MESA, GL_DEPTH_COMPONENT, GL_STENCIL_INDEX, GL_DEPTH_STENCIL.
+ */
+GLenum
+_mesa_get_format_base_format(gl_format format)
+{
+ const struct gl_format_info *info = _mesa_get_format_info(format);
+ return info->BaseFormat;
+}
+
+
+/**
+ * Return the block size (in pixels) for the given format. Normally
+ * the block size is 1x1. But compressed formats will have block sizes
+ * of 4x4 or 8x4 pixels, etc.
+ * \param bw returns block width in pixels
+ * \param bh returns block height in pixels
+ */
+void
+_mesa_get_format_block_size(gl_format format, GLuint *bw, GLuint *bh)
+{
+ const struct gl_format_info *info = _mesa_get_format_info(format);
+ *bw = info->BlockWidth;
+ *bh = info->BlockHeight;
+}
+
+
+/** Is the given format a compressed format? */
+GLboolean
+_mesa_is_format_compressed(gl_format format)
+{
+ const struct gl_format_info *info = _mesa_get_format_info(format);
+ return info->BlockWidth > 1 || info->BlockHeight > 1;
+}
+
+
+/**
+ * Determine if the given format represents a packed depth/stencil buffer.
+ */
+GLboolean
+_mesa_is_format_packed_depth_stencil(gl_format format)
+{
+ const struct gl_format_info *info = _mesa_get_format_info(format);
+
+ return info->BaseFormat == GL_DEPTH_STENCIL;
+}
+
+
+/**
+ * Is the given format a signed/unsigned integer color format?
+ */
+GLboolean
+_mesa_is_format_integer_color(gl_format format)
+{
+ const struct gl_format_info *info = _mesa_get_format_info(format);
+ return (info->DataType == GL_INT || info->DataType == GL_UNSIGNED_INT) &&
+ info->BaseFormat != GL_DEPTH_COMPONENT &&
+ info->BaseFormat != GL_DEPTH_STENCIL &&
+ info->BaseFormat != GL_STENCIL_INDEX;
+}
+
+
+/**
+ * Return color encoding for given format.
+ * \return GL_LINEAR or GL_SRGB
+ */
+GLenum
+_mesa_get_format_color_encoding(gl_format format)
+{
+ /* XXX this info should be encoded in gl_format_info */
+ switch (format) {
+ case MESA_FORMAT_SRGB8:
+ case MESA_FORMAT_SRGBA8:
+ case MESA_FORMAT_SARGB8:
+ case MESA_FORMAT_SL8:
+ case MESA_FORMAT_SLA8:
+ case MESA_FORMAT_SRGB_DXT1:
+ case MESA_FORMAT_SRGBA_DXT1:
+ case MESA_FORMAT_SRGBA_DXT3:
+ case MESA_FORMAT_SRGBA_DXT5:
+ return GL_SRGB;
+ default:
+ return GL_LINEAR;
+ }
+}
+
+
+/**
+ * For an sRGB format, return the corresponding linear color space format.
+ * For non-sRGB formats, return the format as-is.
+ */
+gl_format
+_mesa_get_srgb_format_linear(gl_format format)
+{
+ switch (format) {
+ case MESA_FORMAT_SRGB8:
+ format = MESA_FORMAT_RGB888;
+ break;
+ case MESA_FORMAT_SRGBA8:
+ format = MESA_FORMAT_RGBA8888;
+ break;
+ case MESA_FORMAT_SARGB8:
+ format = MESA_FORMAT_ARGB8888;
+ break;
+ case MESA_FORMAT_SL8:
+ format = MESA_FORMAT_L8;
+ break;
+ case MESA_FORMAT_SLA8:
+ format = MESA_FORMAT_AL88;
+ break;
+ case MESA_FORMAT_SRGB_DXT1:
+ format = MESA_FORMAT_RGB_DXT1;
+ break;
+ case MESA_FORMAT_SRGBA_DXT1:
+ format = MESA_FORMAT_RGBA_DXT1;
+ break;
+ case MESA_FORMAT_SRGBA_DXT3:
+ format = MESA_FORMAT_RGBA_DXT3;
+ break;
+ case MESA_FORMAT_SRGBA_DXT5:
+ format = MESA_FORMAT_RGBA_DXT5;
+ break;
+ default:
+ break;
+ }
+ return format;
+}
+
+
+/**
+ * Return number of bytes needed to store an image of the given size
+ * in the given format.
+ */
+GLuint
+_mesa_format_image_size(gl_format format, GLsizei width,
+ GLsizei height, GLsizei depth)
+{
+ const struct gl_format_info *info = _mesa_get_format_info(format);
+ /* Strictly speaking, a conditional isn't needed here */
+ if (info->BlockWidth > 1 || info->BlockHeight > 1) {
+ /* compressed format (2D only for now) */
+ const GLuint bw = info->BlockWidth, bh = info->BlockHeight;
+ const GLuint wblocks = (width + bw - 1) / bw;
+ const GLuint hblocks = (height + bh - 1) / bh;
+ const GLuint sz = wblocks * hblocks * info->BytesPerBlock;
+ assert(depth == 1);
+ return sz;
+ }
+ else {
+ /* non-compressed */
+ const GLuint sz = width * height * depth * info->BytesPerBlock;
+ return sz;
+ }
+}
+
+
+/**
+ * Same as _mesa_format_image_size() but returns a 64-bit value to
+ * accomodate very large textures.
+ */
+uint64_t
+_mesa_format_image_size64(gl_format format, GLsizei width,
+ GLsizei height, GLsizei depth)
+{
+ const struct gl_format_info *info = _mesa_get_format_info(format);
+ /* Strictly speaking, a conditional isn't needed here */
+ if (info->BlockWidth > 1 || info->BlockHeight > 1) {
+ /* compressed format (2D only for now) */
+ const uint64_t bw = info->BlockWidth, bh = info->BlockHeight;
+ const uint64_t wblocks = (width + bw - 1) / bw;
+ const uint64_t hblocks = (height + bh - 1) / bh;
+ const uint64_t sz = wblocks * hblocks * info->BytesPerBlock;
+ assert(depth == 1);
+ return sz;
+ }
+ else {
+ /* non-compressed */
+ const uint64_t sz = ((uint64_t) width *
+ (uint64_t) height *
+ (uint64_t) depth *
+ info->BytesPerBlock);
+ return sz;
+ }
+}
+
+
+
+GLint
+_mesa_format_row_stride(gl_format format, GLsizei width)
+{
+ const struct gl_format_info *info = _mesa_get_format_info(format);
+ /* Strictly speaking, a conditional isn't needed here */
+ if (info->BlockWidth > 1 || info->BlockHeight > 1) {
+ /* compressed format */
+ const GLuint bw = info->BlockWidth;
+ const GLuint wblocks = (width + bw - 1) / bw;
+ const GLint stride = wblocks * info->BytesPerBlock;
+ return stride;
+ }
+ else {
+ const GLint stride = width * info->BytesPerBlock;
+ return stride;
+ }
+}
+
+
+/**
+ * Debug/test: check that all formats are handled in the
+ * _mesa_format_to_type_and_comps() function. When new pixel formats
+ * are added to Mesa, that function needs to be updated.
+ * This is a no-op after the first call.
+ */
+static void
+check_format_to_type_and_comps(void)
+{
+ gl_format f;
+
+ for (f = MESA_FORMAT_NONE + 1; f < MESA_FORMAT_COUNT; f++) {
+ GLenum datatype = 0;
+ GLuint comps = 0;
+ /* This function will emit a problem/warning if the format is
+ * not handled.
+ */
+ _mesa_format_to_type_and_comps(f, &datatype, &comps);
+ }
+}
+
+
+/**
+ * Do sanity checking of the format info table.
+ */
+void
+_mesa_test_formats(void)
+{
+ GLuint i;
+
+ assert(Elements(format_info) == MESA_FORMAT_COUNT);
+
+ for (i = 0; i < MESA_FORMAT_COUNT; i++) {
+ const struct gl_format_info *info = _mesa_get_format_info(i);
+ assert(info);
+
+ assert(info->Name == i);
+
+ if (info->Name == MESA_FORMAT_NONE)
+ continue;
+
+ if (info->BlockWidth == 1 && info->BlockHeight == 1) {
+ if (info->RedBits > 0) {
+ GLuint t = info->RedBits + info->GreenBits
+ + info->BlueBits + info->AlphaBits;
+ assert(t / 8 <= info->BytesPerBlock);
+ (void) t;
+ }
+ }
+
+ assert(info->DataType == GL_UNSIGNED_NORMALIZED ||
+ info->DataType == GL_SIGNED_NORMALIZED ||
+ info->DataType == GL_UNSIGNED_INT ||
+ info->DataType == GL_INT ||
+ info->DataType == GL_FLOAT ||
+ /* Z32_FLOAT_X24S8 has DataType of GL_NONE */
+ info->DataType == GL_NONE);
+
+ if (info->BaseFormat == GL_RGB) {
+ assert(info->RedBits > 0);
+ assert(info->GreenBits > 0);
+ assert(info->BlueBits > 0);
+ assert(info->AlphaBits == 0);
+ assert(info->LuminanceBits == 0);
+ assert(info->IntensityBits == 0);
+ }
+ else if (info->BaseFormat == GL_RGBA) {
+ assert(info->RedBits > 0);
+ assert(info->GreenBits > 0);
+ assert(info->BlueBits > 0);
+ assert(info->AlphaBits > 0);
+ assert(info->LuminanceBits == 0);
+ assert(info->IntensityBits == 0);
+ }
+ else if (info->BaseFormat == GL_RG) {
+ assert(info->RedBits > 0);
+ assert(info->GreenBits > 0);
+ assert(info->BlueBits == 0);
+ assert(info->AlphaBits == 0);
+ assert(info->LuminanceBits == 0);
+ assert(info->IntensityBits == 0);
+ }
+ else if (info->BaseFormat == GL_RED) {
+ assert(info->RedBits > 0);
+ assert(info->GreenBits == 0);
+ assert(info->BlueBits == 0);
+ assert(info->AlphaBits == 0);
+ assert(info->LuminanceBits == 0);
+ assert(info->IntensityBits == 0);
+ }
+ else if (info->BaseFormat == GL_LUMINANCE) {
+ assert(info->RedBits == 0);
+ assert(info->GreenBits == 0);
+ assert(info->BlueBits == 0);
+ assert(info->AlphaBits == 0);
+ assert(info->LuminanceBits > 0);
+ assert(info->IntensityBits == 0);
+ }
+ else if (info->BaseFormat == GL_INTENSITY) {
+ assert(info->RedBits == 0);
+ assert(info->GreenBits == 0);
+ assert(info->BlueBits == 0);
+ assert(info->AlphaBits == 0);
+ assert(info->LuminanceBits == 0);
+ assert(info->IntensityBits > 0);
+ }
+ }
+
+ check_format_to_type_and_comps();
+}
+
+
+
+/**
+ * Return datatype and number of components per texel for the given gl_format.
+ * Only used for mipmap generation code.
+ */
+void
+_mesa_format_to_type_and_comps(gl_format format,
+ GLenum *datatype, GLuint *comps)
+{
+ switch (format) {
+ case MESA_FORMAT_RGBA8888:
+ case MESA_FORMAT_RGBA8888_REV:
+ case MESA_FORMAT_ARGB8888:
+ case MESA_FORMAT_ARGB8888_REV:
+ case MESA_FORMAT_XRGB8888:
+ case MESA_FORMAT_XRGB8888_REV:
+ *datatype = GL_UNSIGNED_BYTE;
+ *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_ARGB2101010:
+ *datatype = GL_UNSIGNED_INT_2_10_10_10_REV;
+ *comps = 4;
+ return;
+
+ case MESA_FORMAT_RGBA5551:
+ *datatype = GL_UNSIGNED_SHORT_5_5_5_1;
+ *comps = 4;
+ return;
+
+ case MESA_FORMAT_AL44:
+ *datatype = MESA_UNSIGNED_BYTE_4_4;
+ *comps = 2;
+ return;
+
+ case MESA_FORMAT_AL88:
+ case MESA_FORMAT_AL88_REV:
+ case MESA_FORMAT_RG88:
+ case MESA_FORMAT_RG88_REV:
+ *datatype = GL_UNSIGNED_BYTE;
+ *comps = 2;
+ return;
+
+ case MESA_FORMAT_AL1616:
+ case MESA_FORMAT_AL1616_REV:
+ case MESA_FORMAT_RG1616:
+ case MESA_FORMAT_RG1616_REV:
+ *datatype = GL_UNSIGNED_SHORT;
+ *comps = 2;
+ return;
+
+ case MESA_FORMAT_R16:
+ case MESA_FORMAT_A16:
+ case MESA_FORMAT_L16:
+ case MESA_FORMAT_I16:
+ *datatype = GL_UNSIGNED_SHORT;
+ *comps = 1;
+ 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_R8:
+ case MESA_FORMAT_S8:
+ *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_X8_Z24:
+ *datatype = GL_UNSIGNED_INT;
+ *comps = 1;
+ return;
+
+ case MESA_FORMAT_Z24_X8:
+ *datatype = GL_UNSIGNED_INT;
+ *comps = 1;
+ return;
+
+ case MESA_FORMAT_Z32:
+ *datatype = GL_UNSIGNED_INT;
+ *comps = 1;
+ return;
+
+ case MESA_FORMAT_Z32_FLOAT:
+ *datatype = GL_FLOAT;
+ *comps = 1;
+ return;
+
+ case MESA_FORMAT_Z32_FLOAT_X24S8:
+ *datatype = GL_FLOAT_32_UNSIGNED_INT_24_8_REV;
+ *comps = 1;
+ return;
+
+ case MESA_FORMAT_DUDV8:
+ *datatype = GL_BYTE;
+ *comps = 2;
+ return;
+
+ case MESA_FORMAT_SIGNED_R8:
+ case MESA_FORMAT_SIGNED_A8:
+ case MESA_FORMAT_SIGNED_L8:
+ case MESA_FORMAT_SIGNED_I8:
+ *datatype = GL_BYTE;
+ *comps = 1;
+ return;
+ case MESA_FORMAT_SIGNED_RG88_REV:
+ case MESA_FORMAT_SIGNED_AL88:
+ *datatype = GL_BYTE;
+ *comps = 2;
+ return;
+ case MESA_FORMAT_SIGNED_RGBA8888:
+ case MESA_FORMAT_SIGNED_RGBA8888_REV:
+ case MESA_FORMAT_SIGNED_RGBX8888:
+ *datatype = GL_BYTE;
+ *comps = 4;
+ return;
+
+ case MESA_FORMAT_RGBA_16:
+ *datatype = GL_UNSIGNED_SHORT;
+ *comps = 4;
+ return;
+
+ case MESA_FORMAT_SIGNED_R16:
+ case MESA_FORMAT_SIGNED_A16:
+ case MESA_FORMAT_SIGNED_L16:
+ case MESA_FORMAT_SIGNED_I16:
+ *datatype = GL_SHORT;
+ *comps = 1;
+ return;
+ case MESA_FORMAT_SIGNED_GR1616:
+ case MESA_FORMAT_SIGNED_AL1616:
+ *datatype = GL_SHORT;
+ *comps = 2;
+ return;
+ case MESA_FORMAT_SIGNED_RGB_16:
+ *datatype = GL_SHORT;
+ *comps = 3;
+ return;
+ case MESA_FORMAT_SIGNED_RGBA_16:
+ *datatype = GL_SHORT;
+ *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
+#endif
+ case MESA_FORMAT_RED_RGTC1:
+ case MESA_FORMAT_SIGNED_RED_RGTC1:
+ case MESA_FORMAT_RG_RGTC2:
+ case MESA_FORMAT_SIGNED_RG_RGTC2:
+ case MESA_FORMAT_L_LATC1:
+ case MESA_FORMAT_SIGNED_L_LATC1:
+ case MESA_FORMAT_LA_LATC2:
+ case MESA_FORMAT_SIGNED_LA_LATC2:
+ /* XXX generate error instead? */
+ *datatype = GL_UNSIGNED_BYTE;
+ *comps = 0;
+ 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:
+ case MESA_FORMAT_RG_FLOAT32:
+ *datatype = GL_FLOAT;
+ *comps = 2;
+ return;
+ case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16:
+ case MESA_FORMAT_RG_FLOAT16:
+ *datatype = GL_HALF_FLOAT_ARB;
+ *comps = 2;
+ return;
+ case MESA_FORMAT_ALPHA_FLOAT32:
+ case MESA_FORMAT_LUMINANCE_FLOAT32:
+ case MESA_FORMAT_INTENSITY_FLOAT32:
+ case MESA_FORMAT_R_FLOAT32:
+ *datatype = GL_FLOAT;
+ *comps = 1;
+ return;
+ case MESA_FORMAT_ALPHA_FLOAT16:
+ case MESA_FORMAT_LUMINANCE_FLOAT16:
+ case MESA_FORMAT_INTENSITY_FLOAT16:
+ case MESA_FORMAT_R_FLOAT16:
+ *datatype = GL_HALF_FLOAT_ARB;
+ *comps = 1;
+ return;
+
+ case MESA_FORMAT_RGBA_INT8:
+ *datatype = GL_BYTE;
+ *comps = 4;
+ return;
+ case MESA_FORMAT_RGBA_INT16:
+ *datatype = GL_SHORT;
+ *comps = 4;
+ return;
+ case MESA_FORMAT_RGBA_INT32:
+ *datatype = GL_INT;
+ *comps = 4;
+ return;
+
+ /**
+ * \name Non-normalized unsigned integer formats.
+ */
+ case MESA_FORMAT_RGBA_UINT8:
+ *datatype = GL_UNSIGNED_BYTE;
+ *comps = 4;
+ return;
+ case MESA_FORMAT_RGBA_UINT16:
+ *datatype = GL_UNSIGNED_SHORT;
+ *comps = 4;
+ return;
+ case MESA_FORMAT_RGBA_UINT32:
+ *datatype = GL_UNSIGNED_INT;
+ *comps = 4;
+ return;
+
+ case MESA_FORMAT_RGB9_E5_FLOAT:
+ *datatype = GL_UNSIGNED_INT_5_9_9_9_REV;
+ *comps = 3;
+ return;
+
+ case MESA_FORMAT_R11_G11_B10_FLOAT:
+ *datatype = GL_UNSIGNED_INT_10F_11F_11F_REV;
+ *comps = 3;
+ return;
+
+ case MESA_FORMAT_COUNT:
+ assert(0);
+ return;
+
+ case MESA_FORMAT_NONE:
+ /* For debug builds, warn if any formats are not handled */
+#ifdef DEBUG
+ default:
+#endif
+ _mesa_problem(NULL, "bad format %s in _mesa_format_to_type_and_comps",
+ _mesa_get_format_name(format));
+ *datatype = 0;
+ *comps = 1;
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-06 23:08:58 +0000