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third_party_mesa3d/src/mesa/state_tracker/st_format.c
Marek Olšák 8e28d842d1 st/mesa: convert Mesa float formats to Gallium 
Squashed commit of the following:

Author: Marek Olšák <maraeo@gmail.com>

    st/mesa: require RGBA16F and RGBA32F to be renderable
    st/mesa: fix L32F and L16F format translation
    st/mesa: also convert the R/RG float formats

commit 49a9948b6a81b7d813304d081139d98e95ba5d1a
Author: Luca Barbieri <luca@luca-barbieri.com>
Date:   Fri Aug 20 10:36:17 2010 +0200

    mesa/st: enable ARB_texture_float if supported formats allow it

commit 7383632f7b6f9021b65f4973b7e7c99f0e8ce9b2
Author: Luca Barbieri <luca@luca-barbieri.com>
Date:   Tue Aug 24 21:00:46 2010 +0200

    mesa/st: support ARB_texture_float internal formats

commit 7c362cc06982586c2d29fac55f6bcc4bcd1550b5
Author: Luca Barbieri <luca@luca-barbieri.com>
Date:   Tue Aug 24 21:00:33 2010 +0200

    mesa/st: convert L/A/I floating point formats
2011-04-15 05:08:00 +02:00

1650 lines
55 KiB
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/**************************************************************************
*
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
* Copyright (c) 2008-2010 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, 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 (including the
* next paragraph) 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 NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.
*
**************************************************************************/
/**
* Mesa / Gallium format conversion and format selection code.
* \author Brian Paul
*/
#include "main/imports.h"
#include "main/context.h"
#include "main/texstore.h"
#include "main/image.h"
#include "main/macros.h"
#include "main/mfeatures.h"
#include "pipe/p_context.h"
#include "pipe/p_defines.h"
#include "pipe/p_screen.h"
#include "util/u_format.h"
#include "st_context.h"
#include "st_format.h"
static GLuint
format_max_bits(enum pipe_format format)
{
GLuint size = util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_RGB, 0);
size = MAX2(size, util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_RGB, 1));
size = MAX2(size, util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_RGB, 2));
size = MAX2(size, util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_RGB, 3));
size = MAX2(size, util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_ZS, 0));
size = MAX2(size, util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_ZS, 1));
return size;
}
/**
* Return basic GL datatype for the given gallium format.
*/
GLenum
st_format_datatype(enum pipe_format format)
{
const struct util_format_description *desc;
desc = util_format_description(format);
assert(desc);
if (desc->layout == UTIL_FORMAT_LAYOUT_PLAIN) {
if (format == PIPE_FORMAT_B5G5R5A1_UNORM ||
format == PIPE_FORMAT_B5G6R5_UNORM) {
return GL_UNSIGNED_SHORT;
}
else if (format == PIPE_FORMAT_Z24_UNORM_S8_USCALED ||
format == PIPE_FORMAT_S8_USCALED_Z24_UNORM ||
format == PIPE_FORMAT_Z24X8_UNORM ||
format == PIPE_FORMAT_X8Z24_UNORM) {
return GL_UNSIGNED_INT_24_8;
}
else {
const GLuint size = format_max_bits(format);
if (size == 8) {
if (desc->channel[0].type == UTIL_FORMAT_TYPE_UNSIGNED)
return GL_UNSIGNED_BYTE;
else
return GL_BYTE;
}
else if (size == 16) {
if (desc->channel[0].type == UTIL_FORMAT_TYPE_UNSIGNED)
return GL_UNSIGNED_SHORT;
else
return GL_SHORT;
}
else {
assert( size <= 32 );
if (desc->channel[0].type == UTIL_FORMAT_TYPE_UNSIGNED)
return GL_UNSIGNED_INT;
else
return GL_INT;
}
}
}
else if (format == PIPE_FORMAT_UYVY) {
return GL_UNSIGNED_SHORT;
}
else if (format == PIPE_FORMAT_YUYV) {
return GL_UNSIGNED_SHORT;
}
else {
/* probably a compressed format, unsupported anyway */
return GL_NONE;
}
}
/**
* Translate Mesa format to Gallium format.
*/
enum pipe_format
st_mesa_format_to_pipe_format(gl_format mesaFormat)
{
switch (mesaFormat) {
case MESA_FORMAT_RGBA8888:
return PIPE_FORMAT_A8B8G8R8_UNORM;
case MESA_FORMAT_RGBA8888_REV:
return PIPE_FORMAT_R8G8B8A8_UNORM;
case MESA_FORMAT_ARGB8888:
return PIPE_FORMAT_B8G8R8A8_UNORM;
case MESA_FORMAT_ARGB8888_REV:
return PIPE_FORMAT_A8R8G8B8_UNORM;
case MESA_FORMAT_XRGB8888:
return PIPE_FORMAT_B8G8R8X8_UNORM;
case MESA_FORMAT_XRGB8888_REV:
return PIPE_FORMAT_X8R8G8B8_UNORM;
case MESA_FORMAT_ARGB1555:
return PIPE_FORMAT_B5G5R5A1_UNORM;
case MESA_FORMAT_ARGB4444:
return PIPE_FORMAT_B4G4R4A4_UNORM;
case MESA_FORMAT_RGB565:
return PIPE_FORMAT_B5G6R5_UNORM;
case MESA_FORMAT_RGB332:
return PIPE_FORMAT_B2G3R3_UNORM;
case MESA_FORMAT_ARGB2101010:
return PIPE_FORMAT_B10G10R10A2_UNORM;
case MESA_FORMAT_AL44:
return PIPE_FORMAT_L4A4_UNORM;
case MESA_FORMAT_AL88:
return PIPE_FORMAT_L8A8_UNORM;
case MESA_FORMAT_AL1616:
return PIPE_FORMAT_L16A16_UNORM;
case MESA_FORMAT_A8:
return PIPE_FORMAT_A8_UNORM;
case MESA_FORMAT_A16:
return PIPE_FORMAT_A16_UNORM;
case MESA_FORMAT_L8:
return PIPE_FORMAT_L8_UNORM;
case MESA_FORMAT_L16:
return PIPE_FORMAT_L16_UNORM;
case MESA_FORMAT_I8:
return PIPE_FORMAT_I8_UNORM;
case MESA_FORMAT_I16:
return PIPE_FORMAT_I16_UNORM;
case MESA_FORMAT_Z16:
return PIPE_FORMAT_Z16_UNORM;
case MESA_FORMAT_Z32:
return PIPE_FORMAT_Z32_UNORM;
case MESA_FORMAT_Z24_S8:
return PIPE_FORMAT_S8_USCALED_Z24_UNORM;
case MESA_FORMAT_S8_Z24:
return PIPE_FORMAT_Z24_UNORM_S8_USCALED;
case MESA_FORMAT_Z24_X8:
return PIPE_FORMAT_X8Z24_UNORM;
case MESA_FORMAT_X8_Z24:
return PIPE_FORMAT_Z24X8_UNORM;
case MESA_FORMAT_S8:
return PIPE_FORMAT_S8_USCALED;
case MESA_FORMAT_YCBCR:
return PIPE_FORMAT_UYVY;
#if FEATURE_texture_s3tc
case MESA_FORMAT_RGB_DXT1:
return PIPE_FORMAT_DXT1_RGB;
case MESA_FORMAT_RGBA_DXT1:
return PIPE_FORMAT_DXT1_RGBA;
case MESA_FORMAT_RGBA_DXT3:
return PIPE_FORMAT_DXT3_RGBA;
case MESA_FORMAT_RGBA_DXT5:
return PIPE_FORMAT_DXT5_RGBA;
#if FEATURE_EXT_texture_sRGB
case MESA_FORMAT_SRGB_DXT1:
return PIPE_FORMAT_DXT1_SRGB;
case MESA_FORMAT_SRGBA_DXT1:
return PIPE_FORMAT_DXT1_SRGBA;
case MESA_FORMAT_SRGBA_DXT3:
return PIPE_FORMAT_DXT3_SRGBA;
case MESA_FORMAT_SRGBA_DXT5:
return PIPE_FORMAT_DXT5_SRGBA;
#endif
#endif
#if FEATURE_EXT_texture_sRGB
case MESA_FORMAT_SLA8:
return PIPE_FORMAT_L8A8_SRGB;
case MESA_FORMAT_SL8:
return PIPE_FORMAT_L8_SRGB;
case MESA_FORMAT_SRGB8:
return PIPE_FORMAT_R8G8B8_SRGB;
case MESA_FORMAT_SRGBA8:
return PIPE_FORMAT_A8B8G8R8_SRGB;
case MESA_FORMAT_SARGB8:
return PIPE_FORMAT_B8G8R8A8_SRGB;
#endif
case MESA_FORMAT_RGBA_FLOAT32:
return PIPE_FORMAT_R32G32B32A32_FLOAT;
case MESA_FORMAT_RGBA_FLOAT16:
return PIPE_FORMAT_R16G16B16A16_FLOAT;
case MESA_FORMAT_RGB_FLOAT32:
return PIPE_FORMAT_R32G32B32_FLOAT;
case MESA_FORMAT_RGB_FLOAT16:
return PIPE_FORMAT_R16G16B16_FLOAT;
case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32:
return PIPE_FORMAT_L32A32_FLOAT;
case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16:
return PIPE_FORMAT_L16A16_FLOAT;
case MESA_FORMAT_LUMINANCE_FLOAT32:
return PIPE_FORMAT_L32_FLOAT;
case MESA_FORMAT_LUMINANCE_FLOAT16:
return PIPE_FORMAT_L16_FLOAT;
case MESA_FORMAT_ALPHA_FLOAT32:
return PIPE_FORMAT_A32_FLOAT;
case MESA_FORMAT_ALPHA_FLOAT16:
return PIPE_FORMAT_A16_FLOAT;
case MESA_FORMAT_INTENSITY_FLOAT32:
return PIPE_FORMAT_I32_FLOAT;
case MESA_FORMAT_INTENSITY_FLOAT16:
return PIPE_FORMAT_I16_FLOAT;
case MESA_FORMAT_R_FLOAT32:
return PIPE_FORMAT_R32_FLOAT;
case MESA_FORMAT_R_FLOAT16:
return PIPE_FORMAT_R16_FLOAT;
case MESA_FORMAT_RG_FLOAT32:
return PIPE_FORMAT_R32G32_FLOAT;
case MESA_FORMAT_RG_FLOAT16:
return PIPE_FORMAT_R16G16_FLOAT;
case MESA_FORMAT_R8:
return PIPE_FORMAT_R8_UNORM;
case MESA_FORMAT_R16:
return PIPE_FORMAT_R16_UNORM;
case MESA_FORMAT_RG88:
return PIPE_FORMAT_R8G8_UNORM;
case MESA_FORMAT_RG1616:
return PIPE_FORMAT_R16G16_UNORM;
case MESA_FORMAT_RGBA_16:
return PIPE_FORMAT_R16G16B16A16_UNORM;
/* signed int formats */
case MESA_FORMAT_RGBA_INT8:
return PIPE_FORMAT_R8G8B8A8_SSCALED;
case MESA_FORMAT_RGBA_INT16:
return PIPE_FORMAT_R16G16B16A16_SSCALED;
case MESA_FORMAT_RGBA_INT32:
return PIPE_FORMAT_R32G32B32A32_SSCALED;
/* unsigned int formats */
case MESA_FORMAT_RGBA_UINT8:
return PIPE_FORMAT_R8G8B8A8_USCALED;
case MESA_FORMAT_RGBA_UINT16:
return PIPE_FORMAT_R16G16B16A16_USCALED;
case MESA_FORMAT_RGBA_UINT32:
return PIPE_FORMAT_R32G32B32A32_USCALED;
case MESA_FORMAT_RED_RGTC1:
return PIPE_FORMAT_RGTC1_UNORM;
case MESA_FORMAT_SIGNED_RED_RGTC1:
return PIPE_FORMAT_RGTC1_SNORM;
case MESA_FORMAT_RG_RGTC2:
return PIPE_FORMAT_RGTC2_UNORM;
case MESA_FORMAT_SIGNED_RG_RGTC2:
return PIPE_FORMAT_RGTC2_SNORM;
case MESA_FORMAT_L_LATC1:
return PIPE_FORMAT_LATC1_UNORM;
case MESA_FORMAT_SIGNED_L_LATC1:
return PIPE_FORMAT_LATC1_SNORM;
case MESA_FORMAT_LA_LATC2:
return PIPE_FORMAT_LATC2_UNORM;
case MESA_FORMAT_SIGNED_LA_LATC2:
return PIPE_FORMAT_LATC2_SNORM;
/* signed normalized formats */
case MESA_FORMAT_SIGNED_R8:
return PIPE_FORMAT_R8_SNORM;
case MESA_FORMAT_SIGNED_RG88_REV:
return PIPE_FORMAT_R8G8_SNORM;
case MESA_FORMAT_SIGNED_RGBA8888_REV:
return PIPE_FORMAT_R8G8B8A8_SNORM;
case MESA_FORMAT_SIGNED_A8:
return PIPE_FORMAT_A8_SNORM;
case MESA_FORMAT_SIGNED_L8:
return PIPE_FORMAT_L8_SNORM;
case MESA_FORMAT_SIGNED_AL88:
return PIPE_FORMAT_L8A8_SNORM;
case MESA_FORMAT_SIGNED_I8:
return PIPE_FORMAT_I8_SNORM;
case MESA_FORMAT_SIGNED_R16:
return PIPE_FORMAT_R16_SNORM;
case MESA_FORMAT_SIGNED_GR1616:
return PIPE_FORMAT_R16G16_SNORM;
case MESA_FORMAT_SIGNED_RGBA_16:
return PIPE_FORMAT_R16G16B16A16_SNORM;
case MESA_FORMAT_SIGNED_A16:
return PIPE_FORMAT_A16_SNORM;
case MESA_FORMAT_SIGNED_L16:
return PIPE_FORMAT_L16_SNORM;
case MESA_FORMAT_SIGNED_AL1616:
return PIPE_FORMAT_L16A16_SNORM;
case MESA_FORMAT_SIGNED_I16:
return PIPE_FORMAT_I16_SNORM;
default:
assert(0);
return PIPE_FORMAT_NONE;
}
}
/**
* Translate Gallium format to Mesa format.
*/
gl_format
st_pipe_format_to_mesa_format(enum pipe_format format)
{
switch (format) {
case PIPE_FORMAT_A8B8G8R8_UNORM:
return MESA_FORMAT_RGBA8888;
case PIPE_FORMAT_R8G8B8A8_UNORM:
return MESA_FORMAT_RGBA8888_REV;
case PIPE_FORMAT_B8G8R8A8_UNORM:
return MESA_FORMAT_ARGB8888;
case PIPE_FORMAT_A8R8G8B8_UNORM:
return MESA_FORMAT_ARGB8888_REV;
case PIPE_FORMAT_B8G8R8X8_UNORM:
return MESA_FORMAT_XRGB8888;
case PIPE_FORMAT_X8R8G8B8_UNORM:
return MESA_FORMAT_XRGB8888_REV;
case PIPE_FORMAT_B5G5R5A1_UNORM:
return MESA_FORMAT_ARGB1555;
case PIPE_FORMAT_B4G4R4A4_UNORM:
return MESA_FORMAT_ARGB4444;
case PIPE_FORMAT_B5G6R5_UNORM:
return MESA_FORMAT_RGB565;
case PIPE_FORMAT_B2G3R3_UNORM:
return MESA_FORMAT_RGB332;
case PIPE_FORMAT_B10G10R10A2_UNORM:
return MESA_FORMAT_ARGB2101010;
case PIPE_FORMAT_L4A4_UNORM:
return MESA_FORMAT_AL44;
case PIPE_FORMAT_L8A8_UNORM:
return MESA_FORMAT_AL88;
case PIPE_FORMAT_L16A16_UNORM:
return MESA_FORMAT_AL1616;
case PIPE_FORMAT_A8_UNORM:
return MESA_FORMAT_A8;
case PIPE_FORMAT_A16_UNORM:
return MESA_FORMAT_A16;
case PIPE_FORMAT_L8_UNORM:
return MESA_FORMAT_L8;
case PIPE_FORMAT_L16_UNORM:
return MESA_FORMAT_L16;
case PIPE_FORMAT_I8_UNORM:
return MESA_FORMAT_I8;
case PIPE_FORMAT_I16_UNORM:
return MESA_FORMAT_I16;
case PIPE_FORMAT_S8_USCALED:
return MESA_FORMAT_S8;
case PIPE_FORMAT_R16G16B16A16_UNORM:
return MESA_FORMAT_RGBA_16;
case PIPE_FORMAT_Z16_UNORM:
return MESA_FORMAT_Z16;
case PIPE_FORMAT_Z32_UNORM:
return MESA_FORMAT_Z32;
case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
return MESA_FORMAT_Z24_S8;
case PIPE_FORMAT_X8Z24_UNORM:
return MESA_FORMAT_Z24_X8;
case PIPE_FORMAT_Z24X8_UNORM:
return MESA_FORMAT_X8_Z24;
case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
return MESA_FORMAT_S8_Z24;
case PIPE_FORMAT_UYVY:
return MESA_FORMAT_YCBCR;
case PIPE_FORMAT_YUYV:
return MESA_FORMAT_YCBCR_REV;
#if FEATURE_texture_s3tc
case PIPE_FORMAT_DXT1_RGB:
return MESA_FORMAT_RGB_DXT1;
case PIPE_FORMAT_DXT1_RGBA:
return MESA_FORMAT_RGBA_DXT1;
case PIPE_FORMAT_DXT3_RGBA:
return MESA_FORMAT_RGBA_DXT3;
case PIPE_FORMAT_DXT5_RGBA:
return MESA_FORMAT_RGBA_DXT5;
#if FEATURE_EXT_texture_sRGB
case PIPE_FORMAT_DXT1_SRGB:
return MESA_FORMAT_SRGB_DXT1;
case PIPE_FORMAT_DXT1_SRGBA:
return MESA_FORMAT_SRGBA_DXT1;
case PIPE_FORMAT_DXT3_SRGBA:
return MESA_FORMAT_SRGBA_DXT3;
case PIPE_FORMAT_DXT5_SRGBA:
return MESA_FORMAT_SRGBA_DXT5;
#endif
#endif
#if FEATURE_EXT_texture_sRGB
case PIPE_FORMAT_L8A8_SRGB:
return MESA_FORMAT_SLA8;
case PIPE_FORMAT_L8_SRGB:
return MESA_FORMAT_SL8;
case PIPE_FORMAT_R8G8B8_SRGB:
return MESA_FORMAT_SRGB8;
case PIPE_FORMAT_A8B8G8R8_SRGB:
return MESA_FORMAT_SRGBA8;
case PIPE_FORMAT_B8G8R8A8_SRGB:
return MESA_FORMAT_SARGB8;
#endif
case PIPE_FORMAT_R32G32B32A32_FLOAT:
return MESA_FORMAT_RGBA_FLOAT32;
case PIPE_FORMAT_R16G16B16A16_FLOAT:
return MESA_FORMAT_RGBA_FLOAT16;
case PIPE_FORMAT_R32G32B32_FLOAT:
return MESA_FORMAT_RGB_FLOAT32;
case PIPE_FORMAT_R16G16B16_FLOAT:
return MESA_FORMAT_RGB_FLOAT16;
case PIPE_FORMAT_L32A32_FLOAT:
return MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32;
case PIPE_FORMAT_L16A16_FLOAT:
return MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16;
case PIPE_FORMAT_L32_FLOAT:
return MESA_FORMAT_LUMINANCE_FLOAT32;
case PIPE_FORMAT_L16_FLOAT:
return MESA_FORMAT_LUMINANCE_FLOAT16;
case PIPE_FORMAT_A32_FLOAT:
return MESA_FORMAT_ALPHA_FLOAT32;
case PIPE_FORMAT_A16_FLOAT:
return MESA_FORMAT_ALPHA_FLOAT16;
case PIPE_FORMAT_I32_FLOAT:
return MESA_FORMAT_INTENSITY_FLOAT32;
case PIPE_FORMAT_I16_FLOAT:
return MESA_FORMAT_INTENSITY_FLOAT16;
case PIPE_FORMAT_R32_FLOAT:
return MESA_FORMAT_R_FLOAT32;
case PIPE_FORMAT_R16_FLOAT:
return MESA_FORMAT_R_FLOAT16;
case PIPE_FORMAT_R32G32_FLOAT:
return MESA_FORMAT_RG_FLOAT32;
case PIPE_FORMAT_R16G16_FLOAT:
return MESA_FORMAT_RG_FLOAT16;
case PIPE_FORMAT_R8_UNORM:
return MESA_FORMAT_R8;
case PIPE_FORMAT_R16_UNORM:
return MESA_FORMAT_R16;
case PIPE_FORMAT_R8G8_UNORM:
return MESA_FORMAT_RG88;
case PIPE_FORMAT_R16G16_UNORM:
return MESA_FORMAT_RG1616;
/* signed int formats */
case PIPE_FORMAT_R8G8B8A8_SSCALED:
return MESA_FORMAT_RGBA_INT8;
case PIPE_FORMAT_R16G16B16A16_SSCALED:
return MESA_FORMAT_RGBA_INT16;
case PIPE_FORMAT_R32G32B32A32_SSCALED:
return MESA_FORMAT_RGBA_INT32;
/* unsigned int formats */
case PIPE_FORMAT_R8G8B8A8_USCALED:
return MESA_FORMAT_RGBA_UINT8;
case PIPE_FORMAT_R16G16B16A16_USCALED:
return MESA_FORMAT_RGBA_UINT16;
case PIPE_FORMAT_R32G32B32A32_USCALED:
return MESA_FORMAT_RGBA_UINT32;
case PIPE_FORMAT_RGTC1_UNORM:
return MESA_FORMAT_RED_RGTC1;
case PIPE_FORMAT_RGTC1_SNORM:
return MESA_FORMAT_SIGNED_RED_RGTC1;
case PIPE_FORMAT_RGTC2_UNORM:
return MESA_FORMAT_RG_RGTC2;
case PIPE_FORMAT_RGTC2_SNORM:
return MESA_FORMAT_SIGNED_RG_RGTC2;
case PIPE_FORMAT_LATC1_UNORM:
return MESA_FORMAT_L_LATC1;
case PIPE_FORMAT_LATC1_SNORM:
return MESA_FORMAT_SIGNED_L_LATC1;
case PIPE_FORMAT_LATC2_UNORM:
return MESA_FORMAT_LA_LATC2;
case PIPE_FORMAT_LATC2_SNORM:
return MESA_FORMAT_SIGNED_LA_LATC2;
/* signed normalized formats */
case PIPE_FORMAT_R8_SNORM:
return MESA_FORMAT_SIGNED_R8;
case PIPE_FORMAT_R8G8_SNORM:
return MESA_FORMAT_SIGNED_RG88_REV;
case PIPE_FORMAT_R8G8B8A8_SNORM:
return MESA_FORMAT_SIGNED_RGBA8888_REV;
case PIPE_FORMAT_A8_SNORM:
return MESA_FORMAT_SIGNED_A8;
case PIPE_FORMAT_L8_SNORM:
return MESA_FORMAT_SIGNED_L8;
case PIPE_FORMAT_L8A8_SNORM:
return MESA_FORMAT_SIGNED_AL88;
case PIPE_FORMAT_I8_SNORM:
return MESA_FORMAT_SIGNED_I8;
case PIPE_FORMAT_R16_SNORM:
return MESA_FORMAT_SIGNED_R16;
case PIPE_FORMAT_R16G16_SNORM:
return MESA_FORMAT_SIGNED_GR1616;
case PIPE_FORMAT_R16G16B16A16_SNORM:
return MESA_FORMAT_SIGNED_RGBA_16;
case PIPE_FORMAT_A16_SNORM:
return MESA_FORMAT_SIGNED_A16;
case PIPE_FORMAT_L16_SNORM:
return MESA_FORMAT_SIGNED_L16;
case PIPE_FORMAT_L16A16_SNORM:
return MESA_FORMAT_SIGNED_AL1616;
case PIPE_FORMAT_I16_SNORM:
return MESA_FORMAT_SIGNED_I16;
default:
assert(0);
return MESA_FORMAT_NONE;
}
}
/**
* Return first supported format from the given list.
*/
static enum pipe_format
find_supported_format(struct pipe_screen *screen,
const enum pipe_format formats[],
uint num_formats,
enum pipe_texture_target target,
unsigned sample_count,
unsigned tex_usage)
{
uint i;
for (i = 0; i < num_formats; i++) {
if (screen->is_format_supported(screen, formats[i], target,
sample_count, tex_usage)) {
return formats[i];
}
}
return PIPE_FORMAT_NONE;
}
/**
* Find an RGBA format supported by the context/winsys.
*/
static enum pipe_format
default_rgba_format(struct pipe_screen *screen,
enum pipe_texture_target target,
unsigned sample_count,
unsigned tex_usage)
{
static const enum pipe_format colorFormats[] = {
PIPE_FORMAT_B8G8R8A8_UNORM,
PIPE_FORMAT_A8R8G8B8_UNORM,
PIPE_FORMAT_A8B8G8R8_UNORM,
PIPE_FORMAT_B5G6R5_UNORM
};
return find_supported_format(screen, colorFormats, Elements(colorFormats),
target, sample_count, tex_usage);
}
/**
* Find an RGB format supported by the context/winsys.
*/
static enum pipe_format
default_rgb_format(struct pipe_screen *screen,
enum pipe_texture_target target,
unsigned sample_count,
unsigned tex_usage)
{
static const enum pipe_format colorFormats[] = {
PIPE_FORMAT_B8G8R8X8_UNORM,
PIPE_FORMAT_X8R8G8B8_UNORM,
PIPE_FORMAT_X8B8G8R8_UNORM,
PIPE_FORMAT_B8G8R8A8_UNORM,
PIPE_FORMAT_A8R8G8B8_UNORM,
PIPE_FORMAT_A8B8G8R8_UNORM,
PIPE_FORMAT_B5G6R5_UNORM
};
return find_supported_format(screen, colorFormats, Elements(colorFormats),
target, sample_count, tex_usage);
}
/**
* Find an sRGBA format supported by the context/winsys.
*/
static enum pipe_format
default_srgba_format(struct pipe_screen *screen,
enum pipe_texture_target target,
unsigned sample_count,
unsigned tex_usage)
{
static const enum pipe_format colorFormats[] = {
PIPE_FORMAT_B8G8R8A8_SRGB,
PIPE_FORMAT_A8R8G8B8_SRGB,
PIPE_FORMAT_A8B8G8R8_SRGB,
};
return find_supported_format(screen, colorFormats, Elements(colorFormats),
target, sample_count, tex_usage);
}
/**
* Given an OpenGL internalFormat value for a texture or surface, return
* the best matching PIPE_FORMAT_x, or PIPE_FORMAT_NONE if there's no match.
* This is called during glTexImage2D, for example.
*
* The bindings parameter typically has PIPE_BIND_SAMPLER_VIEW set, plus
* either PIPE_BINDING_RENDER_TARGET or PIPE_BINDING_DEPTH_STENCIL if
* we want render-to-texture ability.
*
* \param internalFormat the user value passed to glTexImage2D
* \param target one of PIPE_TEXTURE_x
* \param bindings bitmask of PIPE_BIND_x flags.
*/
enum pipe_format
st_choose_format(struct pipe_screen *screen, GLenum internalFormat,
enum pipe_texture_target target, unsigned sample_count,
unsigned bindings)
{
switch (internalFormat) {
case GL_RGB10:
case GL_RGB10_A2:
if (screen->is_format_supported( screen, PIPE_FORMAT_B10G10R10A2_UNORM,
target, sample_count, bindings))
return PIPE_FORMAT_B10G10R10A2_UNORM;
/* Pass through. */
case 4:
case GL_RGBA:
case GL_RGBA8:
return default_rgba_format( screen, target, sample_count, bindings);
case GL_BGRA:
if (screen->is_format_supported( screen, PIPE_FORMAT_B8G8R8A8_UNORM,
target, sample_count, bindings))
return PIPE_FORMAT_B8G8R8A8_UNORM;
return default_rgba_format( screen, target, sample_count, bindings);
case 3:
case GL_RGB:
case GL_RGB8:
return default_rgb_format( screen, target, sample_count, bindings);
case GL_RGB12:
case GL_RGB16:
case GL_RGBA12:
case GL_RGBA16:
if (screen->is_format_supported( screen, PIPE_FORMAT_R16G16B16A16_UNORM,
target, sample_count, bindings))
return PIPE_FORMAT_R16G16B16A16_UNORM;
return default_rgba_format( screen, target, sample_count, bindings);
case GL_RGBA4:
case GL_RGBA2:
if (screen->is_format_supported( screen, PIPE_FORMAT_B4G4R4A4_UNORM,
target, sample_count, bindings))
return PIPE_FORMAT_B4G4R4A4_UNORM;
return default_rgba_format( screen, target, sample_count, bindings);
case GL_RGB5_A1:
if (screen->is_format_supported( screen, PIPE_FORMAT_B5G5R5A1_UNORM,
target, sample_count, bindings))
return PIPE_FORMAT_B5G5R5A1_UNORM;
return default_rgba_format( screen, target, sample_count, bindings);
case GL_R3_G3_B2:
if (screen->is_format_supported( screen, PIPE_FORMAT_B2G3R3_UNORM,
target, sample_count, bindings))
return PIPE_FORMAT_B2G3R3_UNORM;
/* Pass through. */
case GL_RGB5:
case GL_RGB4:
if (screen->is_format_supported( screen, PIPE_FORMAT_B5G6R5_UNORM,
target, sample_count, bindings))
return PIPE_FORMAT_B5G6R5_UNORM;
if (screen->is_format_supported( screen, PIPE_FORMAT_B5G5R5A1_UNORM,
target, sample_count, bindings))
return PIPE_FORMAT_B5G5R5A1_UNORM;
return default_rgba_format( screen, target, sample_count, bindings);
case GL_ALPHA12:
case GL_ALPHA16:
if (screen->is_format_supported( screen, PIPE_FORMAT_A16_UNORM, target,
sample_count, bindings))
return PIPE_FORMAT_A16_UNORM;
/* Pass through. */
case GL_ALPHA:
case GL_ALPHA4:
case GL_ALPHA8:
case GL_COMPRESSED_ALPHA:
if (screen->is_format_supported( screen, PIPE_FORMAT_A8_UNORM, target,
sample_count, bindings))
return PIPE_FORMAT_A8_UNORM;
return default_rgba_format( screen, target, sample_count, bindings);
case GL_LUMINANCE12:
case GL_LUMINANCE16:
if (screen->is_format_supported( screen, PIPE_FORMAT_L16_UNORM, target,
sample_count, bindings))
return PIPE_FORMAT_L16_UNORM;
/* Pass through. */
case 1:
case GL_LUMINANCE:
case GL_LUMINANCE4:
case GL_LUMINANCE8:
if (screen->is_format_supported( screen, PIPE_FORMAT_L8_UNORM, target,
sample_count, bindings))
return PIPE_FORMAT_L8_UNORM;
return default_rgba_format( screen, target, sample_count, bindings);
case GL_LUMINANCE12_ALPHA4:
case GL_LUMINANCE12_ALPHA12:
case GL_LUMINANCE16_ALPHA16:
if (screen->is_format_supported( screen, PIPE_FORMAT_L16A16_UNORM, target,
sample_count, bindings))
return PIPE_FORMAT_L16A16_UNORM;
/* Pass through. */
case 2:
case GL_LUMINANCE_ALPHA:
case GL_LUMINANCE6_ALPHA2:
case GL_LUMINANCE8_ALPHA8:
if (screen->is_format_supported( screen, PIPE_FORMAT_L8A8_UNORM, target,
sample_count, bindings))
return PIPE_FORMAT_L8A8_UNORM;
return default_rgba_format( screen, target, sample_count, bindings);
case GL_LUMINANCE4_ALPHA4:
if (screen->is_format_supported( screen, PIPE_FORMAT_L4A4_UNORM, target,
sample_count, bindings))
return PIPE_FORMAT_L4A4_UNORM;
if (screen->is_format_supported( screen, PIPE_FORMAT_L8A8_UNORM, target,
sample_count, bindings))
return PIPE_FORMAT_L8A8_UNORM;
return default_rgba_format( screen, target, sample_count, bindings);
case GL_INTENSITY12:
case GL_INTENSITY16:
if (screen->is_format_supported( screen, PIPE_FORMAT_I16_UNORM, target,
sample_count, bindings))
return PIPE_FORMAT_I16_UNORM;
/* Pass through. */
case GL_INTENSITY:
case GL_INTENSITY4:
case GL_INTENSITY8:
case GL_COMPRESSED_INTENSITY:
if (screen->is_format_supported( screen, PIPE_FORMAT_I8_UNORM, target,
sample_count, bindings))
return PIPE_FORMAT_I8_UNORM;
return default_rgba_format( screen, target, sample_count, bindings);
case GL_YCBCR_MESA:
if (screen->is_format_supported(screen, PIPE_FORMAT_UYVY, target,
sample_count, bindings)) {
return PIPE_FORMAT_UYVY;
}
if (screen->is_format_supported(screen, PIPE_FORMAT_YUYV, target,
sample_count, bindings)) {
return PIPE_FORMAT_YUYV;
}
return PIPE_FORMAT_NONE;
case GL_COMPRESSED_RGB:
/* can only sample from compressed formats */
if (bindings & ~PIPE_BIND_SAMPLER_VIEW)
return PIPE_FORMAT_NONE;
else if (screen->is_format_supported(screen, PIPE_FORMAT_DXT1_RGB,
target, sample_count, bindings))
return PIPE_FORMAT_DXT1_RGB;
else
return default_rgb_format(screen, target, sample_count, bindings);
case GL_COMPRESSED_RGBA:
/* can only sample from compressed formats */
if (bindings & ~PIPE_BIND_SAMPLER_VIEW)
return PIPE_FORMAT_NONE;
else if (screen->is_format_supported(screen, PIPE_FORMAT_DXT3_RGBA,
target, sample_count, bindings))
return PIPE_FORMAT_DXT3_RGBA;
else
return default_rgba_format(screen, target, sample_count, bindings);
case GL_RGB_S3TC:
case GL_RGB4_S3TC:
case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
if (screen->is_format_supported(screen, PIPE_FORMAT_DXT1_RGB,
target, sample_count, bindings))
return PIPE_FORMAT_DXT1_RGB;
else
return PIPE_FORMAT_NONE;
case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
if (screen->is_format_supported(screen, PIPE_FORMAT_DXT1_RGBA,
target, sample_count, bindings))
return PIPE_FORMAT_DXT1_RGBA;
else
return PIPE_FORMAT_NONE;
case GL_RGBA_S3TC:
case GL_RGBA4_S3TC:
case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
if (screen->is_format_supported(screen, PIPE_FORMAT_DXT3_RGBA,
target, sample_count, bindings))
return PIPE_FORMAT_DXT3_RGBA;
else
return PIPE_FORMAT_NONE;
case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
if (screen->is_format_supported(screen, PIPE_FORMAT_DXT5_RGBA,
target, sample_count, bindings))
return PIPE_FORMAT_DXT5_RGBA;
else
return PIPE_FORMAT_NONE;
#if 0
case GL_COMPRESSED_RGB_FXT1_3DFX:
return PIPE_FORMAT_RGB_FXT1;
case GL_COMPRESSED_RGBA_FXT1_3DFX:
return PIPE_FORMAT_RGB_FXT1;
#endif
case GL_DEPTH_COMPONENT16:
if (screen->is_format_supported(screen, PIPE_FORMAT_Z16_UNORM, target,
sample_count, bindings))
return PIPE_FORMAT_Z16_UNORM;
/* fall-through */
case GL_DEPTH_COMPONENT24:
if (screen->is_format_supported(screen, PIPE_FORMAT_Z24_UNORM_S8_USCALED,
target, sample_count, bindings))
return PIPE_FORMAT_Z24_UNORM_S8_USCALED;
if (screen->is_format_supported(screen, PIPE_FORMAT_S8_USCALED_Z24_UNORM,
target, sample_count, bindings))
return PIPE_FORMAT_S8_USCALED_Z24_UNORM;
/* fall-through */
case GL_DEPTH_COMPONENT32:
if (screen->is_format_supported(screen, PIPE_FORMAT_Z32_UNORM, target,
sample_count, bindings))
return PIPE_FORMAT_Z32_UNORM;
/* fall-through */
case GL_DEPTH_COMPONENT:
{
static const enum pipe_format formats[] = {
PIPE_FORMAT_Z32_UNORM,
PIPE_FORMAT_Z24_UNORM_S8_USCALED,
PIPE_FORMAT_S8_USCALED_Z24_UNORM,
PIPE_FORMAT_Z16_UNORM
};
return find_supported_format(screen, formats, Elements(formats),
target, sample_count, bindings);
}
case GL_STENCIL_INDEX:
case GL_STENCIL_INDEX1_EXT:
case GL_STENCIL_INDEX4_EXT:
case GL_STENCIL_INDEX8_EXT:
case GL_STENCIL_INDEX16_EXT:
{
static const enum pipe_format formats[] = {
PIPE_FORMAT_S8_USCALED,
PIPE_FORMAT_Z24_UNORM_S8_USCALED,
PIPE_FORMAT_S8_USCALED_Z24_UNORM
};
return find_supported_format(screen, formats, Elements(formats),
target, sample_count, bindings);
}
case GL_DEPTH_STENCIL_EXT:
case GL_DEPTH24_STENCIL8_EXT:
{
static const enum pipe_format formats[] = {
PIPE_FORMAT_Z24_UNORM_S8_USCALED,
PIPE_FORMAT_S8_USCALED_Z24_UNORM
};
return find_supported_format(screen, formats, Elements(formats),
target, sample_count, bindings);
}
case GL_SRGB_EXT:
case GL_SRGB8_EXT:
case GL_SRGB_ALPHA_EXT:
case GL_SRGB8_ALPHA8_EXT:
return default_srgba_format( screen, target, sample_count, bindings);
case GL_COMPRESSED_SRGB_EXT:
case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
if (screen->is_format_supported(screen, PIPE_FORMAT_DXT1_SRGB, target,
sample_count, bindings))
return PIPE_FORMAT_DXT1_SRGB;
return default_srgba_format( screen, target, sample_count, bindings);
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
return PIPE_FORMAT_DXT1_SRGBA;
case GL_COMPRESSED_SRGB_ALPHA_EXT:
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
if (screen->is_format_supported(screen, PIPE_FORMAT_DXT3_SRGBA, target,
sample_count, bindings))
return PIPE_FORMAT_DXT3_SRGBA;
return default_srgba_format( screen, target, sample_count, bindings);
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
return PIPE_FORMAT_DXT5_SRGBA;
case GL_SLUMINANCE_ALPHA_EXT:
case GL_SLUMINANCE8_ALPHA8_EXT:
case GL_COMPRESSED_SLUMINANCE_EXT:
case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT:
if (screen->is_format_supported(screen, PIPE_FORMAT_L8A8_SRGB, target,
sample_count, bindings))
return PIPE_FORMAT_L8A8_SRGB;
return default_srgba_format( screen, target, sample_count, bindings);
case GL_SLUMINANCE_EXT:
case GL_SLUMINANCE8_EXT:
if (screen->is_format_supported(screen, PIPE_FORMAT_L8_SRGB, target,
sample_count, bindings))
return PIPE_FORMAT_L8_SRGB;
return default_srgba_format( screen, target, sample_count, bindings);
/* prefer formats in order of data size, choosing 16-bit ones if equal sized */
case GL_RGBA16F_ARB:
case GL_RGB16F_ARB:
{
static const enum pipe_format formats[] = {
PIPE_FORMAT_R16G16B16A16_FLOAT,
PIPE_FORMAT_R32G32B32A32_FLOAT
};
return find_supported_format(screen, formats, Elements(formats),
target, sample_count, bindings);
}
case GL_LUMINANCE_ALPHA16F_ARB:
{
static const enum pipe_format formats[] = {
PIPE_FORMAT_L16A16_FLOAT,
PIPE_FORMAT_R16G16B16A16_FLOAT,
PIPE_FORMAT_L32A32_FLOAT,
PIPE_FORMAT_R32G32B32A32_FLOAT
};
return find_supported_format(screen, formats, Elements(formats),
target, sample_count, bindings);
}
case GL_ALPHA16F_ARB:
{
static const enum pipe_format formats[] = {
PIPE_FORMAT_A16_FLOAT,
PIPE_FORMAT_L16A16_FLOAT,
PIPE_FORMAT_A32_FLOAT,
PIPE_FORMAT_R16G16B16A16_FLOAT,
PIPE_FORMAT_L32A32_FLOAT,
PIPE_FORMAT_R32G32B32A32_FLOAT
};
return find_supported_format(screen, formats, Elements(formats),
target, sample_count, bindings);
}
case GL_INTENSITY16F_ARB:
{
static const enum pipe_format formats[] = {
PIPE_FORMAT_I16_FLOAT,
PIPE_FORMAT_L16A16_FLOAT,
PIPE_FORMAT_I32_FLOAT,
PIPE_FORMAT_R16G16B16A16_FLOAT,
PIPE_FORMAT_L32A32_FLOAT,
PIPE_FORMAT_R32G32B32A32_FLOAT
};
return find_supported_format(screen, formats, Elements(formats),
target, sample_count, bindings);
}
case GL_LUMINANCE16F_ARB:
{
static const enum pipe_format formats[] = {
PIPE_FORMAT_L16_FLOAT,
PIPE_FORMAT_L16A16_FLOAT,
PIPE_FORMAT_L32_FLOAT,
PIPE_FORMAT_R16G16B16A16_FLOAT,
PIPE_FORMAT_L32A32_FLOAT,
PIPE_FORMAT_R32G32B32A32_FLOAT
};
return find_supported_format(screen, formats, Elements(formats),
target, sample_count, bindings);
}
case GL_R16F:
{
static const enum pipe_format formats[] = {
PIPE_FORMAT_R16_FLOAT,
PIPE_FORMAT_R16G16_FLOAT,
PIPE_FORMAT_R32_FLOAT,
PIPE_FORMAT_R16G16B16A16_FLOAT,
PIPE_FORMAT_R32G32_FLOAT,
PIPE_FORMAT_R32G32B32A32_FLOAT
};
return find_supported_format(screen, formats, Elements(formats),
target, sample_count, bindings);
}
case GL_RG16F:
{
static const enum pipe_format formats[] = {
PIPE_FORMAT_R16G16_FLOAT,
PIPE_FORMAT_R16G16B16A16_FLOAT,
PIPE_FORMAT_R32G32_FLOAT,
PIPE_FORMAT_R32G32B32A32_FLOAT
};
return find_supported_format(screen, formats, Elements(formats),
target, sample_count, bindings);
}
/* try a 32-bit format if available, otherwise fallback to a 16-bit one */
case GL_RGBA32F_ARB:
case GL_RGB32F_ARB:
{
static const enum pipe_format formats[] = {
PIPE_FORMAT_R32G32B32A32_FLOAT,
PIPE_FORMAT_R16G16B16A16_FLOAT
};
return find_supported_format(screen, formats, Elements(formats),
target, sample_count, bindings);
}
case GL_LUMINANCE_ALPHA32F_ARB:
{
static const enum pipe_format formats[] = {
PIPE_FORMAT_L32A32_FLOAT,
PIPE_FORMAT_R32G32B32A32_FLOAT,
PIPE_FORMAT_L16A16_FLOAT,
PIPE_FORMAT_R16G16B16A16_FLOAT
};
return find_supported_format(screen, formats, Elements(formats),
target, sample_count, bindings);
}
case GL_ALPHA32F_ARB:
{
static const enum pipe_format formats[] = {
PIPE_FORMAT_A32_FLOAT,
PIPE_FORMAT_L32A32_FLOAT,
PIPE_FORMAT_R32G32B32A32_FLOAT,
PIPE_FORMAT_A16_FLOAT,
PIPE_FORMAT_L16A16_FLOAT,
PIPE_FORMAT_R16G16B16A16_FLOAT
};
return find_supported_format(screen, formats, Elements(formats),
target, sample_count, bindings);
}
case GL_INTENSITY32F_ARB:
{
static const enum pipe_format formats[] = {
PIPE_FORMAT_I32_FLOAT,
PIPE_FORMAT_L32A32_FLOAT,
PIPE_FORMAT_R32G32B32A32_FLOAT,
PIPE_FORMAT_I16_FLOAT,
PIPE_FORMAT_L16A16_FLOAT,
PIPE_FORMAT_R16G16B16A16_FLOAT
};
return find_supported_format(screen, formats, Elements(formats),
target, sample_count, bindings);
}
case GL_LUMINANCE32F_ARB:
{
static const enum pipe_format formats[] = {
PIPE_FORMAT_L32_FLOAT,
PIPE_FORMAT_L32A32_FLOAT,
PIPE_FORMAT_R32G32B32A32_FLOAT,
PIPE_FORMAT_L16_FLOAT,
PIPE_FORMAT_L16A16_FLOAT,
PIPE_FORMAT_R16G16B16A16_FLOAT
};
return find_supported_format(screen, formats, Elements(formats),
target, sample_count, bindings);
}
case GL_R32F:
{
static const enum pipe_format formats[] = {
PIPE_FORMAT_R32_FLOAT,
PIPE_FORMAT_R32G32_FLOAT,
PIPE_FORMAT_R32G32B32A32_FLOAT,
PIPE_FORMAT_R16_FLOAT,
PIPE_FORMAT_R16G16_FLOAT,
PIPE_FORMAT_R16G16B16A16_FLOAT
};
return find_supported_format(screen, formats, Elements(formats),
target, sample_count, bindings);
}
case GL_RG32F:
{
static const enum pipe_format formats[] = {
PIPE_FORMAT_R32G32_FLOAT,
PIPE_FORMAT_R32G32B32A32_FLOAT,
PIPE_FORMAT_R16G16_FLOAT,
PIPE_FORMAT_R16G16B16A16_FLOAT
};
return find_supported_format(screen, formats, Elements(formats),
target, sample_count, bindings);
}
case GL_RED:
case GL_R8:
if (screen->is_format_supported(screen, PIPE_FORMAT_R8_UNORM, target,
sample_count, bindings))
return PIPE_FORMAT_R8_UNORM;
return PIPE_FORMAT_NONE;
case GL_RG:
case GL_RG8:
if (screen->is_format_supported(screen, PIPE_FORMAT_R8G8_UNORM, target,
sample_count, bindings))
return PIPE_FORMAT_R8G8_UNORM;
return PIPE_FORMAT_NONE;
case GL_R16:
if (screen->is_format_supported(screen, PIPE_FORMAT_R16_UNORM, target,
sample_count, bindings))
return PIPE_FORMAT_R16_UNORM;
return PIPE_FORMAT_NONE;
case GL_RG16:
if (screen->is_format_supported(screen, PIPE_FORMAT_R16G16_UNORM, target,
sample_count, bindings))
return PIPE_FORMAT_R16G16_UNORM;
return PIPE_FORMAT_NONE;
case GL_COMPRESSED_RED:
case GL_COMPRESSED_RED_RGTC1:
if (screen->is_format_supported(screen, PIPE_FORMAT_RGTC1_UNORM, target,
sample_count, bindings))
return PIPE_FORMAT_RGTC1_UNORM;
if (screen->is_format_supported(screen, PIPE_FORMAT_R8_UNORM, target,
sample_count, bindings))
return PIPE_FORMAT_R8_UNORM;
return PIPE_FORMAT_NONE;
case GL_COMPRESSED_SIGNED_RED_RGTC1:
if (screen->is_format_supported(screen, PIPE_FORMAT_RGTC1_SNORM, target,
sample_count, bindings))
return PIPE_FORMAT_RGTC1_SNORM;
return PIPE_FORMAT_NONE;
case GL_COMPRESSED_RG:
case GL_COMPRESSED_RG_RGTC2:
if (screen->is_format_supported(screen, PIPE_FORMAT_RGTC2_UNORM, target,
sample_count, bindings))
return PIPE_FORMAT_RGTC2_UNORM;
if (screen->is_format_supported(screen, PIPE_FORMAT_R8G8_UNORM, target,
sample_count, bindings))
return PIPE_FORMAT_R8G8_UNORM;
return PIPE_FORMAT_NONE;
case GL_COMPRESSED_SIGNED_RG_RGTC2:
if (screen->is_format_supported(screen, PIPE_FORMAT_RGTC2_SNORM, target,
sample_count, bindings))
return PIPE_FORMAT_RGTC2_SNORM;
return PIPE_FORMAT_NONE;
case GL_COMPRESSED_LUMINANCE:
case GL_COMPRESSED_LUMINANCE_LATC1_EXT:
if (screen->is_format_supported(screen, PIPE_FORMAT_LATC1_UNORM, target,
sample_count, bindings))
return PIPE_FORMAT_LATC1_UNORM;
if (screen->is_format_supported(screen, PIPE_FORMAT_L8_UNORM, target,
sample_count, bindings))
return PIPE_FORMAT_L8_UNORM;
return PIPE_FORMAT_NONE;
case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT:
if (screen->is_format_supported(screen, PIPE_FORMAT_LATC1_SNORM, target,
sample_count, bindings))
return PIPE_FORMAT_LATC1_SNORM;
return PIPE_FORMAT_NONE;
case GL_COMPRESSED_LUMINANCE_ALPHA:
case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT:
case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI:
if (screen->is_format_supported(screen, PIPE_FORMAT_LATC2_UNORM, target,
sample_count, bindings))
return PIPE_FORMAT_LATC2_UNORM;
if (screen->is_format_supported(screen, PIPE_FORMAT_L8A8_UNORM, target,
sample_count, bindings))
return PIPE_FORMAT_L8A8_UNORM;
return PIPE_FORMAT_NONE;
case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT:
if (screen->is_format_supported(screen, PIPE_FORMAT_LATC2_SNORM, target,
sample_count, bindings))
return PIPE_FORMAT_LATC2_SNORM;
return PIPE_FORMAT_NONE;
/* signed/unsigned integer formats.
* XXX Mesa only has formats for RGBA signed/unsigned integer formats.
* If/when new formats are added this code should be updated.
*/
case GL_RED_INTEGER_EXT:
case GL_GREEN_INTEGER_EXT:
case GL_BLUE_INTEGER_EXT:
case GL_ALPHA_INTEGER_EXT:
case GL_RGB_INTEGER_EXT:
case GL_RGBA_INTEGER_EXT:
case GL_BGR_INTEGER_EXT:
case GL_BGRA_INTEGER_EXT:
case GL_LUMINANCE_INTEGER_EXT:
case GL_LUMINANCE_ALPHA_INTEGER_EXT:
/* fall-through */
case GL_RGBA8I_EXT:
case GL_RGB8I_EXT:
case GL_ALPHA8I_EXT:
case GL_INTENSITY8I_EXT:
case GL_LUMINANCE8I_EXT:
case GL_LUMINANCE_ALPHA8I_EXT:
if (screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_SSCALED,
target,
sample_count, bindings))
return PIPE_FORMAT_R8G8B8A8_SSCALED;
return PIPE_FORMAT_NONE;
case GL_RGBA16I_EXT:
case GL_RGB16I_EXT:
case GL_ALPHA16I_EXT:
case GL_INTENSITY16I_EXT:
case GL_LUMINANCE16I_EXT:
case GL_LUMINANCE_ALPHA16I_EXT:
if (screen->is_format_supported(screen, PIPE_FORMAT_R16G16B16A16_SSCALED,
target,
sample_count, bindings))
return PIPE_FORMAT_R16G16B16A16_SSCALED;
return PIPE_FORMAT_NONE;
case GL_RGBA32I_EXT:
case GL_RGB32I_EXT:
case GL_ALPHA32I_EXT:
case GL_INTENSITY32I_EXT:
case GL_LUMINANCE32I_EXT:
case GL_LUMINANCE_ALPHA32I_EXT:
/* xxx */
if (screen->is_format_supported(screen, PIPE_FORMAT_R32G32B32A32_SSCALED,
target,
sample_count, bindings))
return PIPE_FORMAT_R32G32B32A32_SSCALED;
return PIPE_FORMAT_NONE;
case GL_RGBA8UI_EXT:
case GL_RGB8UI_EXT:
case GL_ALPHA8UI_EXT:
case GL_INTENSITY8UI_EXT:
case GL_LUMINANCE8UI_EXT:
case GL_LUMINANCE_ALPHA8UI_EXT:
if (screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_USCALED,
target,
sample_count, bindings))
return PIPE_FORMAT_R8G8B8A8_USCALED;
return PIPE_FORMAT_NONE;
case GL_RGBA16UI_EXT:
case GL_RGB16UI_EXT:
case GL_ALPHA16UI_EXT:
case GL_INTENSITY16UI_EXT:
case GL_LUMINANCE16UI_EXT:
case GL_LUMINANCE_ALPHA16UI_EXT:
if (screen->is_format_supported(screen, PIPE_FORMAT_R16G16B16A16_USCALED,
target,
sample_count, bindings))
return PIPE_FORMAT_R16G16B16A16_USCALED;
return PIPE_FORMAT_NONE;
case GL_RGBA32UI_EXT:
case GL_RGB32UI_EXT:
case GL_ALPHA32UI_EXT:
case GL_INTENSITY32UI_EXT:
case GL_LUMINANCE32UI_EXT:
case GL_LUMINANCE_ALPHA32UI_EXT:
if (screen->is_format_supported(screen, PIPE_FORMAT_R32G32B32A32_USCALED,
target,
sample_count, bindings))
return PIPE_FORMAT_R32G32B32A32_USCALED;
return PIPE_FORMAT_NONE;
/* signed normalized formats */
case GL_RED_SNORM:
case GL_R8_SNORM:
{
static const enum pipe_format formats[] = {
PIPE_FORMAT_R8_SNORM,
PIPE_FORMAT_R8G8_SNORM,
PIPE_FORMAT_R8G8B8A8_SNORM,
};
return find_supported_format(screen, formats, Elements(formats),
target, sample_count, bindings);
}
case GL_R16_SNORM:
{
static const enum pipe_format formats[] = {
PIPE_FORMAT_R16_SNORM,
PIPE_FORMAT_R16G16_SNORM,
PIPE_FORMAT_R16G16B16A16_SNORM,
PIPE_FORMAT_R8_SNORM,
PIPE_FORMAT_R8G8_SNORM,
PIPE_FORMAT_R8G8B8A8_SNORM,
};
return find_supported_format(screen, formats, Elements(formats),
target, sample_count, bindings);
}
case GL_RG_SNORM:
case GL_RG8_SNORM:
{
static const enum pipe_format formats[] = {
PIPE_FORMAT_R8G8_SNORM,
PIPE_FORMAT_R8G8B8A8_SNORM,
};
return find_supported_format(screen, formats, Elements(formats),
target, sample_count, bindings);
}
case GL_RG16_SNORM:
{
static const enum pipe_format formats[] = {
PIPE_FORMAT_R16G16_SNORM,
PIPE_FORMAT_R16G16B16A16_SNORM,
PIPE_FORMAT_R8G8_SNORM,
PIPE_FORMAT_R8G8B8A8_SNORM,
};
return find_supported_format(screen, formats, Elements(formats),
target, sample_count, bindings);
}
case GL_RGB_SNORM:
case GL_RGB8_SNORM:
case GL_RGBA_SNORM:
case GL_RGBA8_SNORM:
if (screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_SNORM,
target,
sample_count, bindings))
return PIPE_FORMAT_R8G8B8A8_SNORM;
return PIPE_FORMAT_NONE;
case GL_RGB16_SNORM:
case GL_RGBA16_SNORM:
{
static const enum pipe_format formats[] = {
PIPE_FORMAT_R16G16B16A16_SNORM,
PIPE_FORMAT_R8G8B8A8_SNORM,
};
return find_supported_format(screen, formats, Elements(formats),
target, sample_count, bindings);
}
case GL_ALPHA_SNORM:
case GL_ALPHA8_SNORM:
{
static const enum pipe_format formats[] = {
PIPE_FORMAT_A8_SNORM,
PIPE_FORMAT_R8G8B8A8_SNORM,
};
return find_supported_format(screen, formats, Elements(formats),
target, sample_count, bindings);
}
case GL_ALPHA16_SNORM:
{
static const enum pipe_format formats[] = {
PIPE_FORMAT_A16_SNORM,
PIPE_FORMAT_R16G16B16A16_SNORM,
PIPE_FORMAT_A8_SNORM,
PIPE_FORMAT_R8G8B8A8_SNORM,
};
return find_supported_format(screen, formats, Elements(formats),
target, sample_count, bindings);
}
case GL_LUMINANCE_SNORM:
case GL_LUMINANCE8_SNORM:
{
static const enum pipe_format formats[] = {
PIPE_FORMAT_L8_SNORM,
PIPE_FORMAT_R8G8B8A8_SNORM,
};
return find_supported_format(screen, formats, Elements(formats),
target, sample_count, bindings);
}
case GL_LUMINANCE16_SNORM:
{
static const enum pipe_format formats[] = {
PIPE_FORMAT_L16_SNORM,
PIPE_FORMAT_R16G16B16A16_SNORM,
PIPE_FORMAT_L8_SNORM,
PIPE_FORMAT_R8G8B8A8_SNORM,
};
return find_supported_format(screen, formats, Elements(formats),
target, sample_count, bindings);
}
case GL_LUMINANCE_ALPHA_SNORM:
case GL_LUMINANCE8_ALPHA8_SNORM:
{
static const enum pipe_format formats[] = {
PIPE_FORMAT_L8A8_SNORM,
PIPE_FORMAT_R8G8B8A8_SNORM,
};
return find_supported_format(screen, formats, Elements(formats),
target, sample_count, bindings);
}
case GL_LUMINANCE16_ALPHA16_SNORM:
{
static const enum pipe_format formats[] = {
PIPE_FORMAT_L16A16_SNORM,
PIPE_FORMAT_R16G16B16A16_SNORM,
PIPE_FORMAT_L8A8_SNORM,
PIPE_FORMAT_R8G8B8A8_SNORM,
};
return find_supported_format(screen, formats, Elements(formats),
target, sample_count, bindings);
}
case GL_INTENSITY_SNORM:
case GL_INTENSITY8_SNORM:
{
static const enum pipe_format formats[] = {
PIPE_FORMAT_I8_SNORM,
PIPE_FORMAT_R8G8B8A8_SNORM,
};
return find_supported_format(screen, formats, Elements(formats),
target, sample_count, bindings);
}
case GL_INTENSITY16_SNORM:
{
static const enum pipe_format formats[] = {
PIPE_FORMAT_I16_SNORM,
PIPE_FORMAT_R16G16B16A16_SNORM,
PIPE_FORMAT_I8_SNORM,
PIPE_FORMAT_R8G8B8A8_SNORM,
};
return find_supported_format(screen, formats, Elements(formats),
target, sample_count, bindings);
}
default:
return PIPE_FORMAT_NONE;
}
}
/**
* Called by FBO code to choose a PIPE_FORMAT_ for drawing surfaces.
*/
enum pipe_format
st_choose_renderbuffer_format(struct pipe_screen *screen,
GLenum internalFormat, unsigned sample_count)
{
uint usage;
if (_mesa_is_depth_or_stencil_format(internalFormat))
usage = PIPE_BIND_DEPTH_STENCIL;
else
usage = PIPE_BIND_RENDER_TARGET;
return st_choose_format(screen, internalFormat, PIPE_TEXTURE_2D,
sample_count, usage);
}
/**
* Called via ctx->Driver.chooseTextureFormat().
*/
gl_format
st_ChooseTextureFormat_renderable(struct gl_context *ctx, GLint internalFormat,
GLenum format, GLenum type, GLboolean renderable)
{
struct pipe_screen *screen = st_context(ctx)->pipe->screen;
enum pipe_format pFormat;
uint bindings;
(void) format;
(void) type;
/* GL textures may wind up being render targets, but we don't know
* that in advance. Specify potential render target flags now.
*/
bindings = PIPE_BIND_SAMPLER_VIEW;
if (renderable == GL_TRUE) {
if (_mesa_is_depth_format(internalFormat) ||
_mesa_is_depth_or_stencil_format(internalFormat))
bindings |= PIPE_BIND_DEPTH_STENCIL;
else
bindings |= PIPE_BIND_RENDER_TARGET;
}
pFormat = st_choose_format(screen, internalFormat,
PIPE_TEXTURE_2D, 0, bindings);
if (pFormat == PIPE_FORMAT_NONE) {
/* try choosing format again, this time without render target bindings */
pFormat = st_choose_format(screen, internalFormat,
PIPE_TEXTURE_2D, 0, PIPE_BIND_SAMPLER_VIEW);
}
if (pFormat == PIPE_FORMAT_NONE) {
/* no luck at all */
return MESA_FORMAT_NONE;
}
return st_pipe_format_to_mesa_format(pFormat);
}
gl_format
st_ChooseTextureFormat(struct gl_context *ctx, GLint internalFormat,
GLenum format, GLenum type)
{
boolean want_renderable =
internalFormat == 3 || internalFormat == 4 ||
internalFormat == GL_RGB || internalFormat == GL_RGBA ||
internalFormat == GL_RGB8 || internalFormat == GL_RGBA8 ||
internalFormat == GL_BGRA;
return st_ChooseTextureFormat_renderable(ctx, internalFormat,
format, type, want_renderable);
}
/**
* Test if a gallium format is equivalent to a GL format/type.
*/
GLboolean
st_equal_formats(enum pipe_format pFormat, GLenum format, GLenum type)
{
switch (pFormat) {
case PIPE_FORMAT_A8B8G8R8_UNORM:
return format == GL_RGBA && type == GL_UNSIGNED_BYTE;
case PIPE_FORMAT_A8R8G8B8_UNORM:
return format == GL_BGRA && type == GL_UNSIGNED_BYTE;
case PIPE_FORMAT_B5G6R5_UNORM:
return format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5;
/* XXX more combos... */
default:
return GL_FALSE;
}
}
GLboolean
st_sampler_compat_formats(enum pipe_format format1, enum pipe_format format2)
{
if (format1 == format2)
return GL_TRUE;
if (format1 == PIPE_FORMAT_B8G8R8A8_UNORM &&
format2 == PIPE_FORMAT_B8G8R8X8_UNORM)
return GL_TRUE;
if (format1 == PIPE_FORMAT_B8G8R8X8_UNORM &&
format2 == PIPE_FORMAT_B8G8R8A8_UNORM)
return GL_TRUE;
if (format1 == PIPE_FORMAT_A8B8G8R8_UNORM &&
format2 == PIPE_FORMAT_X8B8G8R8_UNORM)
return GL_TRUE;
if (format1 == PIPE_FORMAT_X8B8G8R8_UNORM &&
format2 == PIPE_FORMAT_A8B8G8R8_UNORM)
return GL_TRUE;
if (format1 == PIPE_FORMAT_A8R8G8B8_UNORM &&
format2 == PIPE_FORMAT_X8R8G8B8_UNORM)
return GL_TRUE;
if (format1 == PIPE_FORMAT_X8R8G8B8_UNORM &&
format2 == PIPE_FORMAT_A8R8G8B8_UNORM)
return GL_TRUE;
return GL_FALSE;
}
/**
* This is used for translating texture border color and the clear
* color. For example, the clear color is interpreted according to
* the renderbuffer's base format. For example, if clearing a
* GL_LUMINANCE buffer, ClearColor[0] = luminance and ClearColor[1] =
* alpha. Similarly for texture border colors.
*/
void
st_translate_color(const GLfloat colorIn[4], GLenum baseFormat,
GLfloat colorOut[4])
{
switch (baseFormat) {
case GL_RED:
colorOut[0] = colorIn[0];
colorOut[1] = 0.0F;
colorOut[2] = 0.0F;
colorOut[3] = 1.0F;
break;
case GL_RG:
colorOut[0] = colorIn[0];
colorOut[1] = colorIn[1];
colorOut[2] = 0.0F;
colorOut[3] = 1.0F;
break;
case GL_RGB:
colorOut[0] = colorIn[0];
colorOut[1] = colorIn[1];
colorOut[2] = colorIn[2];
colorOut[3] = 1.0F;
break;
case GL_ALPHA:
colorOut[0] = colorOut[1] = colorOut[2] = 0.0;
colorOut[3] = colorIn[3];
break;
case GL_LUMINANCE:
colorOut[0] = colorOut[1] = colorOut[2] = colorIn[0];
colorOut[3] = 1.0;
break;
case GL_LUMINANCE_ALPHA:
colorOut[0] = colorOut[1] = colorOut[2] = colorIn[0];
colorOut[3] = colorIn[3];
break;
case GL_INTENSITY:
colorOut[0] = colorOut[1] = colorOut[2] = colorOut[3] = colorIn[0];
break;
default:
COPY_4V(colorOut, colorIn);
}
}
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