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|
/**************************************************************************
*
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
* Copyright (c) 2008 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.
*
**************************************************************************/
/**
* Texture Image-related functions.
* \author Brian Paul
*/
#include "main/imports.h"
#include "main/context.h"
#include "main/texstore.h"
#include "main/texformat.h"
#include "main/enums.h"
#include "main/macros.h"
#include "pipe/p_context.h"
#include "pipe/p_defines.h"
#include "pipe/p_screen.h"
#include "st_context.h"
#include "st_format.h"
static GLuint
format_bits(
pipe_format_rgbazs_t info,
GLuint comp )
{
return pf_get_component_bits( (enum pipe_format) info, comp );
}
static GLuint
format_max_bits(
pipe_format_rgbazs_t info )
{
GLuint size = format_bits( info, PIPE_FORMAT_COMP_R );
size = MAX2( size, format_bits( info, PIPE_FORMAT_COMP_G ) );
size = MAX2( size, format_bits( info, PIPE_FORMAT_COMP_B ) );
size = MAX2( size, format_bits( info, PIPE_FORMAT_COMP_A ) );
size = MAX2( size, format_bits( info, PIPE_FORMAT_COMP_Z ) );
size = MAX2( size, format_bits( info, PIPE_FORMAT_COMP_S ) );
return size;
}
static GLuint
format_size(
pipe_format_rgbazs_t info )
{
return
format_bits( info, PIPE_FORMAT_COMP_R ) +
format_bits( info, PIPE_FORMAT_COMP_G ) +
format_bits( info, PIPE_FORMAT_COMP_B ) +
format_bits( info, PIPE_FORMAT_COMP_A ) +
format_bits( info, PIPE_FORMAT_COMP_Z ) +
format_bits( info, PIPE_FORMAT_COMP_S );
}
/*
* XXX temporary here
*/
GLboolean
st_get_format_info(enum pipe_format format, struct pipe_format_info *pinfo)
{
if (pf_layout(format) == PIPE_FORMAT_LAYOUT_RGBAZS) {
pipe_format_rgbazs_t info;
info = format;
#if 0
printf("%s\n", pf_name( format ) );
#endif
/* Data type */
if (format == PIPE_FORMAT_A1R5G5B5_UNORM || format == PIPE_FORMAT_R5G6B5_UNORM) {
pinfo->datatype = GL_UNSIGNED_SHORT;
}
else {
GLuint size;
size = format_max_bits( info );
if (size == 8) {
if (pf_type(info) == PIPE_FORMAT_TYPE_UNORM)
pinfo->datatype = GL_UNSIGNED_BYTE;
else
pinfo->datatype = GL_BYTE;
}
else if (size == 16) {
if (pf_type(info) == PIPE_FORMAT_TYPE_UNORM)
pinfo->datatype = GL_UNSIGNED_SHORT;
else
pinfo->datatype = GL_SHORT;
}
else {
assert( size <= 32 );
if (pf_type(info) == PIPE_FORMAT_TYPE_UNORM)
pinfo->datatype = GL_UNSIGNED_INT;
else
pinfo->datatype = GL_INT;
}
}
/* Component bits */
pinfo->red_bits = format_bits( info, PIPE_FORMAT_COMP_R );
pinfo->green_bits = format_bits( info, PIPE_FORMAT_COMP_G );
pinfo->blue_bits = format_bits( info, PIPE_FORMAT_COMP_B );
pinfo->alpha_bits = format_bits( info, PIPE_FORMAT_COMP_A );
pinfo->depth_bits = format_bits( info, PIPE_FORMAT_COMP_Z );
pinfo->stencil_bits = format_bits( info, PIPE_FORMAT_COMP_S );
pinfo->luminance_bits = 0;
pinfo->intensity_bits = 0;
/* Format size */
pinfo->size = format_size( info ) / 8;
/* Luminance & Intensity bits */
if( pf_swizzle_x(info) == PIPE_FORMAT_COMP_R &&
pf_swizzle_y(info) == PIPE_FORMAT_COMP_R &&
pf_swizzle_z(info) == PIPE_FORMAT_COMP_R ) {
if( pf_swizzle_w(info) == PIPE_FORMAT_COMP_R ) {
pinfo->intensity_bits = pinfo->red_bits;
}
else {
pinfo->luminance_bits = pinfo->red_bits;
}
pinfo->red_bits = 0;
}
/* Base format */
if (pinfo->depth_bits) {
if (pinfo->stencil_bits) {
pinfo->base_format = GL_DEPTH_STENCIL_EXT;
}
else {
pinfo->base_format = GL_DEPTH_COMPONENT;
}
}
else if (pinfo->stencil_bits) {
pinfo->base_format = GL_STENCIL_INDEX;
}
else {
pinfo->base_format = GL_RGBA;
}
}
else if (pf_layout(format) == PIPE_FORMAT_LAYOUT_YCBCR) {
pinfo->base_format = GL_YCBCR_MESA;
pinfo->datatype = GL_UNSIGNED_SHORT;
pinfo->size = 2; /* two bytes per "texel" */
}
else {
/* compressed format? */
assert(0);
}
#if 0
printf(
"ST_FORMAT: R(%u), G(%u), B(%u), A(%u), Z(%u), S(%u)\n",
pinfo->red_bits,
pinfo->green_bits,
pinfo->blue_bits,
pinfo->alpha_bits,
pinfo->depth_bits,
pinfo->stencil_bits );
#endif
pinfo->format = format;
return GL_TRUE;
}
/**
* Return bytes per pixel for the given format.
*/
GLuint
st_sizeof_format(enum pipe_format format)
{
struct pipe_format_info info;
if (!st_get_format_info( format, &info )) {
assert( 0 );
return 0;
}
return info.size;
}
/**
* Return bytes per pixel for the given format.
*/
GLenum
st_format_datatype(enum pipe_format format)
{
struct pipe_format_info info;
if (!st_get_format_info( format, &info )) {
assert( 0 );
return 0;
}
return info.datatype;
}
enum pipe_format
st_mesa_format_to_pipe_format(GLuint mesaFormat)
{
switch (mesaFormat) {
/* fix this */
case MESA_FORMAT_ARGB8888_REV:
case MESA_FORMAT_ARGB8888:
return PIPE_FORMAT_A8R8G8B8_UNORM;
case MESA_FORMAT_ARGB1555:
return PIPE_FORMAT_A1R5G5B5_UNORM;
case MESA_FORMAT_ARGB4444:
return PIPE_FORMAT_A4R4G4B4_UNORM;
case MESA_FORMAT_RGB565:
return PIPE_FORMAT_R5G6B5_UNORM;
case MESA_FORMAT_AL88:
return PIPE_FORMAT_A8L8_UNORM;
case MESA_FORMAT_A8:
return PIPE_FORMAT_A8_UNORM;
case MESA_FORMAT_L8:
return PIPE_FORMAT_L8_UNORM;
case MESA_FORMAT_I8:
return PIPE_FORMAT_I8_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_Z24S8_UNORM;
case MESA_FORMAT_S8_Z24:
return PIPE_FORMAT_S8Z24_UNORM;
case MESA_FORMAT_YCBCR:
return PIPE_FORMAT_YCBCR;
#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_A8L8_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_R8G8B8A8_SRGB;
case MESA_FORMAT_SARGB8:
return PIPE_FORMAT_A8R8G8B8_SRGB;
#endif
default:
assert(0);
return 0;
}
}
/**
* 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 tex_usage,
unsigned geom_flags)
{
static const enum pipe_format colorFormats[] = {
PIPE_FORMAT_A8R8G8B8_UNORM,
PIPE_FORMAT_B8G8R8A8_UNORM,
PIPE_FORMAT_R8G8B8A8_UNORM,
PIPE_FORMAT_R5G6B5_UNORM
};
uint i;
for (i = 0; i < Elements(colorFormats); i++) {
if (screen->is_format_supported( screen, colorFormats[i], target, tex_usage, geom_flags )) {
return colorFormats[i];
}
}
return PIPE_FORMAT_NONE;
}
/**
* 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 tex_usage,
unsigned geom_flags)
{
static const enum pipe_format colorFormats[] = {
PIPE_FORMAT_A8R8G8B8_SRGB,
PIPE_FORMAT_B8G8R8A8_SRGB,
PIPE_FORMAT_R8G8B8A8_SRGB,
};
uint i;
for (i = 0; i < Elements(colorFormats); i++) {
if (screen->is_format_supported( screen, colorFormats[i], target, tex_usage, geom_flags )) {
return colorFormats[i];
}
}
return PIPE_FORMAT_NONE;
}
/**
* Search list of formats for first RGBA format with >8 bits/channel.
*/
static enum pipe_format
default_deep_rgba_format(struct pipe_screen *screen,
enum pipe_texture_target target,
unsigned tex_usage,
unsigned geom_flags)
{
if (screen->is_format_supported(screen, PIPE_FORMAT_R16G16B16A16_SNORM, target, tex_usage, geom_flags)) {
return PIPE_FORMAT_R16G16B16A16_SNORM;
}
if (tex_usage & PIPE_TEXTURE_USAGE_RENDER_TARGET)
return default_rgba_format(screen, target, tex_usage, geom_flags);
else
return PIPE_FORMAT_NONE;
}
/**
* Find an Z format supported by the context/winsys.
*/
static enum pipe_format
default_depth_format(struct pipe_screen *screen,
enum pipe_texture_target target,
unsigned tex_usage,
unsigned geom_flags)
{
static const enum pipe_format zFormats[] = {
PIPE_FORMAT_Z16_UNORM,
PIPE_FORMAT_Z32_UNORM,
PIPE_FORMAT_S8Z24_UNORM,
PIPE_FORMAT_Z24S8_UNORM
};
uint i;
for (i = 0; i < Elements(zFormats); i++) {
if (screen->is_format_supported( screen, zFormats[i], target, tex_usage, geom_flags )) {
return zFormats[i];
}
}
return PIPE_FORMAT_NONE;
}
/**
* 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.
* \param target one of PIPE_TEXTURE_x
* \param tex_usage either PIPE_TEXTURE_USAGE_RENDER_TARGET
* or PIPE_TEXTURE_USAGE_SAMPLER
*/
enum pipe_format
st_choose_format(struct pipe_screen *screen, GLenum internalFormat,
enum pipe_texture_target target, unsigned tex_usage)
{
unsigned geom_flags = 0;
switch (internalFormat) {
case 4:
case GL_RGBA:
case GL_COMPRESSED_RGBA:
case 3:
case GL_RGB:
case GL_COMPRESSED_RGB:
case GL_RGBA8:
case GL_RGB10_A2:
case GL_RGBA12:
return default_rgba_format( screen, target, tex_usage, geom_flags );
case GL_RGBA16:
if (tex_usage & PIPE_TEXTURE_USAGE_RENDER_TARGET)
return default_deep_rgba_format( screen, target, tex_usage, geom_flags );
else
return default_rgba_format( screen, target, tex_usage, geom_flags );
case GL_RGBA4:
case GL_RGBA2:
if (screen->is_format_supported( screen, PIPE_FORMAT_A4R4G4B4_UNORM, target, tex_usage, geom_flags ))
return PIPE_FORMAT_A4R4G4B4_UNORM;
return default_rgba_format( screen, target, tex_usage, geom_flags );
case GL_RGB5_A1:
if (screen->is_format_supported( screen, PIPE_FORMAT_A1R5G5B5_UNORM, target, tex_usage, geom_flags ))
return PIPE_FORMAT_A1R5G5B5_UNORM;
return default_rgba_format( screen, target, tex_usage, geom_flags );
case GL_RGB8:
case GL_RGB10:
case GL_RGB12:
case GL_RGB16:
return default_rgba_format( screen, target, tex_usage, geom_flags );
case GL_RGB5:
case GL_RGB4:
case GL_R3_G3_B2:
if (screen->is_format_supported( screen, PIPE_FORMAT_R5G6B5_UNORM, target, tex_usage, geom_flags ))
return PIPE_FORMAT_R5G6B5_UNORM;
if (screen->is_format_supported( screen, PIPE_FORMAT_A1R5G5B5_UNORM, target, tex_usage, geom_flags ))
return PIPE_FORMAT_A1R5G5B5_UNORM;
return default_rgba_format( screen, target, tex_usage, geom_flags );
case GL_ALPHA:
case GL_ALPHA4:
case GL_ALPHA8:
case GL_ALPHA12:
case GL_ALPHA16:
case GL_COMPRESSED_ALPHA:
if (screen->is_format_supported( screen, PIPE_FORMAT_A8_UNORM, target, tex_usage, geom_flags ))
return PIPE_FORMAT_A8_UNORM;
return default_rgba_format( screen, target, tex_usage, geom_flags );
case 1:
case GL_LUMINANCE:
case GL_LUMINANCE4:
case GL_LUMINANCE8:
case GL_LUMINANCE12:
case GL_LUMINANCE16:
case GL_COMPRESSED_LUMINANCE:
if (screen->is_format_supported( screen, PIPE_FORMAT_L8_UNORM, target, tex_usage, geom_flags ))
return PIPE_FORMAT_L8_UNORM;
return default_rgba_format( screen, target, tex_usage, geom_flags );
case 2:
case GL_LUMINANCE_ALPHA:
case GL_LUMINANCE4_ALPHA4:
case GL_LUMINANCE6_ALPHA2:
case GL_LUMINANCE8_ALPHA8:
case GL_LUMINANCE12_ALPHA4:
case GL_LUMINANCE12_ALPHA12:
case GL_LUMINANCE16_ALPHA16:
case GL_COMPRESSED_LUMINANCE_ALPHA:
if (screen->is_format_supported( screen, PIPE_FORMAT_A8L8_UNORM, target, tex_usage, geom_flags ))
return PIPE_FORMAT_A8L8_UNORM;
return default_rgba_format( screen, target, tex_usage, geom_flags );
case GL_INTENSITY:
case GL_INTENSITY4:
case GL_INTENSITY8:
case GL_INTENSITY12:
case GL_INTENSITY16:
case GL_COMPRESSED_INTENSITY:
if (screen->is_format_supported( screen, PIPE_FORMAT_I8_UNORM, target, tex_usage, geom_flags ))
return PIPE_FORMAT_I8_UNORM;
return default_rgba_format( screen, target, tex_usage, geom_flags );
case GL_YCBCR_MESA:
if (screen->is_format_supported(screen, PIPE_FORMAT_YCBCR,
target, tex_usage, geom_flags)) {
return PIPE_FORMAT_YCBCR;
}
if (screen->is_format_supported(screen, PIPE_FORMAT_YCBCR_REV,
target, tex_usage, geom_flags)) {
return PIPE_FORMAT_YCBCR_REV;
}
return PIPE_FORMAT_NONE;
case GL_RGB_S3TC:
case GL_RGB4_S3TC:
case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
return PIPE_FORMAT_DXT1_RGB;
case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
return PIPE_FORMAT_DXT1_RGBA;
case GL_RGBA_S3TC:
case GL_RGBA4_S3TC:
case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
return PIPE_FORMAT_DXT3_RGBA;
case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
return PIPE_FORMAT_DXT5_RGBA;
#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, tex_usage, geom_flags ))
return PIPE_FORMAT_Z16_UNORM;
/* fall-through */
case GL_DEPTH_COMPONENT24:
if (screen->is_format_supported( screen, PIPE_FORMAT_S8Z24_UNORM, target, tex_usage, geom_flags ))
return PIPE_FORMAT_S8Z24_UNORM;
if (screen->is_format_supported( screen, PIPE_FORMAT_Z24S8_UNORM, target, tex_usage, geom_flags ))
return PIPE_FORMAT_Z24S8_UNORM;
/* fall-through */
case GL_DEPTH_COMPONENT32:
if (screen->is_format_supported( screen, PIPE_FORMAT_Z32_UNORM, target, tex_usage, geom_flags ))
return PIPE_FORMAT_Z32_UNORM;
/* fall-through */
case GL_DEPTH_COMPONENT:
return default_depth_format( screen, target, tex_usage, geom_flags );
case GL_STENCIL_INDEX:
case GL_STENCIL_INDEX1_EXT:
case GL_STENCIL_INDEX4_EXT:
case GL_STENCIL_INDEX8_EXT:
case GL_STENCIL_INDEX16_EXT:
if (screen->is_format_supported( screen, PIPE_FORMAT_S8_UNORM, target, tex_usage, geom_flags ))
return PIPE_FORMAT_S8_UNORM;
if (screen->is_format_supported( screen, PIPE_FORMAT_S8Z24_UNORM, target, tex_usage, geom_flags ))
return PIPE_FORMAT_S8Z24_UNORM;
if (screen->is_format_supported( screen, PIPE_FORMAT_Z24S8_UNORM, target, tex_usage, geom_flags ))
return PIPE_FORMAT_Z24S8_UNORM;
return PIPE_FORMAT_NONE;
case GL_DEPTH_STENCIL_EXT:
case GL_DEPTH24_STENCIL8_EXT:
if (screen->is_format_supported( screen, PIPE_FORMAT_S8Z24_UNORM, target, tex_usage, geom_flags ))
return PIPE_FORMAT_S8Z24_UNORM;
if (screen->is_format_supported( screen, PIPE_FORMAT_Z24S8_UNORM, target, tex_usage, geom_flags ))
return PIPE_FORMAT_Z24S8_UNORM;
return PIPE_FORMAT_NONE;
case GL_SRGB_EXT:
case GL_SRGB8_EXT:
case GL_COMPRESSED_SRGB_EXT:
case GL_COMPRESSED_SRGB_ALPHA_EXT:
case GL_SRGB_ALPHA_EXT:
case GL_SRGB8_ALPHA8_EXT:
return default_srgba_format( screen, target, tex_usage, geom_flags );
case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
return PIPE_FORMAT_DXT1_SRGB;
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
return PIPE_FORMAT_DXT1_SRGBA;
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
return PIPE_FORMAT_DXT3_SRGBA;
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_A8L8_SRGB, target, tex_usage, geom_flags ))
return PIPE_FORMAT_A8L8_SRGB;
return default_srgba_format( screen, target, tex_usage, geom_flags );
case GL_SLUMINANCE_EXT:
case GL_SLUMINANCE8_EXT:
if (screen->is_format_supported( screen, PIPE_FORMAT_L8_SRGB, target, tex_usage, geom_flags ))
return PIPE_FORMAT_L8_SRGB;
return default_srgba_format( screen, target, tex_usage, geom_flags );
default:
return PIPE_FORMAT_NONE;
}
}
static GLboolean
is_depth_or_stencil_format(GLenum internalFormat)
{
switch (internalFormat) {
case GL_DEPTH_COMPONENT:
case GL_DEPTH_COMPONENT16:
case GL_DEPTH_COMPONENT24:
case GL_DEPTH_COMPONENT32:
case GL_STENCIL_INDEX:
case GL_STENCIL_INDEX1_EXT:
case GL_STENCIL_INDEX4_EXT:
case GL_STENCIL_INDEX8_EXT:
case GL_STENCIL_INDEX16_EXT:
case GL_DEPTH_STENCIL_EXT:
case GL_DEPTH24_STENCIL8_EXT:
return GL_TRUE;
default:
return GL_FALSE;
}
}
/**
* 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)
{
uint usage;
if (is_depth_or_stencil_format(internalFormat))
usage = PIPE_TEXTURE_USAGE_DEPTH_STENCIL;
else
usage = PIPE_TEXTURE_USAGE_RENDER_TARGET;
return st_choose_format(screen, internalFormat, PIPE_TEXTURE_2D, usage);
}
static const struct gl_texture_format *
translate_gallium_format_to_mesa_format(enum pipe_format format)
{
switch (format) {
case PIPE_FORMAT_A8R8G8B8_UNORM:
return &_mesa_texformat_argb8888;
case PIPE_FORMAT_A1R5G5B5_UNORM:
return &_mesa_texformat_argb1555;
case PIPE_FORMAT_A4R4G4B4_UNORM:
return &_mesa_texformat_argb4444;
case PIPE_FORMAT_R5G6B5_UNORM:
return &_mesa_texformat_rgb565;
case PIPE_FORMAT_A8L8_UNORM:
return &_mesa_texformat_al88;
case PIPE_FORMAT_A8_UNORM:
return &_mesa_texformat_a8;
case PIPE_FORMAT_L8_UNORM:
return &_mesa_texformat_l8;
case PIPE_FORMAT_I8_UNORM:
return &_mesa_texformat_i8;
case PIPE_FORMAT_Z16_UNORM:
return &_mesa_texformat_z16;
case PIPE_FORMAT_Z32_UNORM:
return &_mesa_texformat_z32;
case PIPE_FORMAT_Z24S8_UNORM:
return &_mesa_texformat_z24_s8;
case PIPE_FORMAT_S8Z24_UNORM:
return &_mesa_texformat_s8_z24;
case PIPE_FORMAT_YCBCR:
return &_mesa_texformat_ycbcr;
case PIPE_FORMAT_YCBCR_REV:
return &_mesa_texformat_ycbcr_rev;
#if FEATURE_texture_s3tc
case PIPE_FORMAT_DXT1_RGB:
return &_mesa_texformat_rgb_dxt1;
case PIPE_FORMAT_DXT1_RGBA:
return &_mesa_texformat_rgba_dxt1;
case PIPE_FORMAT_DXT3_RGBA:
return &_mesa_texformat_rgba_dxt3;
case PIPE_FORMAT_DXT5_RGBA:
return &_mesa_texformat_rgba_dxt5;
#if FEATURE_EXT_texture_sRGB
case PIPE_FORMAT_DXT1_SRGB:
return &_mesa_texformat_srgb_dxt1;
case PIPE_FORMAT_DXT1_SRGBA:
return &_mesa_texformat_srgba_dxt1;
case PIPE_FORMAT_DXT3_SRGBA:
return &_mesa_texformat_srgba_dxt3;
case PIPE_FORMAT_DXT5_SRGBA:
return &_mesa_texformat_srgba_dxt5;
#endif
#endif
#if FEATURE_EXT_texture_sRGB
case PIPE_FORMAT_A8L8_SRGB:
return &_mesa_texformat_sla8;
case PIPE_FORMAT_L8_SRGB:
return &_mesa_texformat_sl8;
case PIPE_FORMAT_R8G8B8_SRGB:
return &_mesa_texformat_srgb8;
case PIPE_FORMAT_R8G8B8A8_SRGB:
return &_mesa_texformat_srgba8;
case PIPE_FORMAT_A8R8G8B8_SRGB:
return &_mesa_texformat_sargb8;
#endif
/* XXX add additional cases */
default:
assert(0);
return NULL;
}
}
/**
* Called via ctx->Driver.chooseTextureFormat().
*/
const struct gl_texture_format *
st_ChooseTextureFormat(GLcontext *ctx, GLint internalFormat,
GLenum format, GLenum type)
{
enum pipe_format pFormat;
(void) format;
(void) type;
pFormat = st_choose_format(ctx->st->pipe->screen, internalFormat,
PIPE_TEXTURE_2D, PIPE_TEXTURE_USAGE_SAMPLER);
if (pFormat == PIPE_FORMAT_NONE)
return NULL;
return translate_gallium_format_to_mesa_format(pFormat);
}
/**
* 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_R8G8B8A8_UNORM:
return format == GL_RGBA && type == GL_UNSIGNED_BYTE;
case PIPE_FORMAT_B8G8R8A8_UNORM:
return format == GL_BGRA && type == GL_UNSIGNED_BYTE;
case PIPE_FORMAT_R5G6B5_UNORM:
return format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5;
/* XXX more combos... */
default:
return GL_FALSE;
}
}
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