/**************************************************************************
*
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
* 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 "pipe/p_context.h"
#include "pipe/p_defines.h"
#include "st_context.h"
#include "st_format.h"
/*
* XXX temporary here
*/
const struct pipe_format_info *
st_get_format_info(GLuint format)
{
static const struct pipe_format_info info[] = {
{
PIPE_FORMAT_U_R8_G8_B8_A8, /* format */
GL_RGBA, /* base_format */
GL_UNSIGNED_BYTE, /* datatype for renderbuffers */
8, 8, 8, 8, 0, 0, /* color bits */
0, 0, /* depth, stencil */
4 /* size in bytes */
},
{
PIPE_FORMAT_U_A8_R8_G8_B8,
GL_RGBA, /* base_format */
GL_UNSIGNED_BYTE, /* datatype for renderbuffers */
8, 8, 8, 8, 0, 0, /* color bits */
0, 0, /* depth, stencil */
4 /* size in bytes */
},
{
PIPE_FORMAT_U_A1_R5_G5_B5,
GL_RGBA, /* base_format */
GL_UNSIGNED_SHORT, /* datatype for renderbuffers */
5, 5, 5, 1, 0, 0, /* color bits */
0, 0, /* depth, stencil */
2 /* size in bytes */
},
{
PIPE_FORMAT_U_R5_G6_B5,
GL_RGBA, /* base_format */
GL_UNSIGNED_SHORT, /* datatype for renderbuffers */
5, 6, 5, 0, 0, 0, /* color bits */
0, 0, /* depth, stencil */
2 /* size in bytes */
},
{
PIPE_FORMAT_S_R16_G16_B16_A16,
GL_RGBA, /* base_format */
GL_UNSIGNED_SHORT, /* datatype for renderbuffers */
16, 16, 16, 16, 0, 0, /* color bits */
0, 0, /* depth, stencil */
8 /* size in bytes */
},
{
PIPE_FORMAT_U_Z16,
GL_DEPTH_COMPONENT, /* base_format */
GL_UNSIGNED_SHORT, /* datatype for renderbuffers */
0, 0, 0, 0, 0, 0, /* color bits */
16, 0, /* depth, stencil */
2 /* size in bytes */
},
{
PIPE_FORMAT_U_Z32,
GL_DEPTH_COMPONENT, /* base_format */
GL_UNSIGNED_INT, /* datatype for renderbuffers */
0, 0, 0, 0, 0, 0, /* color bits */
32, 0, /* depth, stencil */
4 /* size in bytes */
},
{
PIPE_FORMAT_S8_Z24,
GL_DEPTH_STENCIL_EXT, /* base_format */
GL_UNSIGNED_INT, /* datatype for renderbuffers */
0, 0, 0, 0, 0, 0, /* color bits */
24, 8, /* depth, stencil */
4 /* size in bytes */
}
/* XXX lots more cases to add */
};
GLuint i;
for (i = 0; i < sizeof(info) / sizeof(info[0]); i++) {
if (info[i].format == format)
return info + i;
}
return NULL;
}
/**
* Return bytes per pixel for the given format.
*/
GLuint
st_sizeof_format(GLuint pipeFormat)
{
const struct pipe_format_info *info = st_get_format_info(pipeFormat);
assert(info);
return info->size;
}
/**
* Return bytes per pixel for the given format.
*/
GLenum
st_format_datatype(GLuint pipeFormat)
{
const struct pipe_format_info *info = st_get_format_info(pipeFormat);
assert(info);
return info->datatype;
}
GLuint
st_mesa_format_to_pipe_format(GLuint mesaFormat)
{
switch (mesaFormat) {
/* fix this */
case MESA_FORMAT_ARGB8888_REV:
case MESA_FORMAT_ARGB8888:
return PIPE_FORMAT_U_A8_R8_G8_B8;
case MESA_FORMAT_AL88:
return PIPE_FORMAT_U_A8_L8;
case MESA_FORMAT_A8:
return PIPE_FORMAT_U_A8;
case MESA_FORMAT_L8:
return PIPE_FORMAT_U_L8;
case MESA_FORMAT_I8:
return PIPE_FORMAT_U_I8;
case MESA_FORMAT_Z16:
return PIPE_FORMAT_U_Z16;
default:
assert(0);
return 0;
}
}
/**
* Search list of formats for first RGBA format.
*/
static GLuint
default_rgba_format(const GLuint formats[], GLuint num)
{
GLuint i;
for (i = 0; i < num; i++) {
if (formats[i] == PIPE_FORMAT_U_R8_G8_B8_A8 ||
formats[i] == PIPE_FORMAT_U_A8_R8_G8_B8 ||
formats[i] == PIPE_FORMAT_U_R5_G6_B5) {
return formats[i];
}
}
return PIPE_FORMAT_NONE;
}
/**
* Search list of formats for first RGBA format with >8 bits/channel.
*/
static GLuint
default_deep_rgba_format(const GLuint formats[], GLuint num)
{
GLuint i;
for (i = 0; i < num; i++) {
if (formats[i] == PIPE_FORMAT_S_R16_G16_B16_A16) {
return formats[i];
}
}
return PIPE_FORMAT_NONE;
}
/**
* Search list of formats for first depth/Z format.
*/
static GLuint
default_depth_format(const GLuint formats[], GLuint num)
{
GLuint i;
for (i = 0; i < num; i++) {
if (formats[i] == PIPE_FORMAT_U_Z16 ||
formats[i] == PIPE_FORMAT_U_Z32 ||
formats[i] == PIPE_FORMAT_S8_Z24) {
return formats[i];
}
}
return PIPE_FORMAT_NONE;
}
/**
* Choose the PIPE_FORMAT_ to use for storing a texture image based
* on the user's internalFormat, format and type parameters.
* We query the pipe device for a list of formats which it supports
* and choose from them.
* If we find a device that needs a more intricate selection mechanism,
* this function _could_ get pushed down into the pipe device.
*
* Note: also used for glRenderbufferStorageEXT()
*
* Note: format and type may be GL_NONE (see renderbuffers)
*
* \return PIPE_FORMAT_NONE if error/problem.
*/
GLuint
st_choose_pipe_format(struct pipe_context *pipe, GLint internalFormat,
GLenum format, GLenum type)
{
const GLuint *supported;
GLboolean allow[PIPE_FORMAT_COUNT];
GLuint i, n;
/* query supported formats and fill in bool allow[] table */
supported = pipe->supported_formats(pipe, &n);
assert(n < PIPE_FORMAT_COUNT); /* sanity check */
memset(allow, 0, sizeof(allow));
for (i = 0; i < n; i++) {
allow[supported[i]] = 1;
}
switch (internalFormat) {
case 4:
case GL_RGBA:
case GL_COMPRESSED_RGBA:
if (format == GL_BGRA) {
if (type == GL_UNSIGNED_BYTE || type == GL_UNSIGNED_INT_8_8_8_8_REV) {
if (allow[PIPE_FORMAT_U_A8_R8_G8_B8])
return PIPE_FORMAT_U_A8_R8_G8_B8;
}
else if (type == GL_UNSIGNED_SHORT_4_4_4_4_REV) {
if (allow[PIPE_FORMAT_U_A4_R4_G4_B4])
return PIPE_FORMAT_U_A4_R4_G4_B4;
}
else if (type == GL_UNSIGNED_SHORT_1_5_5_5_REV) {
if (allow[PIPE_FORMAT_U_A1_R5_G5_B5])
return PIPE_FORMAT_U_A1_R5_G5_B5;
}
}
return default_rgba_format(supported, n);
case 3:
case GL_RGB:
case GL_COMPRESSED_RGB:
if (format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5) {
if (allow[PIPE_FORMAT_U_R5_G6_B5])
return PIPE_FORMAT_U_R5_G6_B5;
}
return default_rgba_format(supported, n);
case GL_RGBA8:
case GL_RGB10_A2:
case GL_RGBA12:
return default_rgba_format(supported, n);
case GL_RGBA16:
return default_deep_rgba_format(supported, n);
case GL_RGBA4:
case GL_RGBA2:
if (allow[PIPE_FORMAT_U_A4_R4_G4_B4])
return PIPE_FORMAT_U_A4_R4_G4_B4;
return default_rgba_format(supported, n);
case GL_RGB5_A1:
if (allow[PIPE_FORMAT_U_A1_R5_G5_B5])
return PIPE_FORMAT_U_A1_R5_G5_B5;
return default_rgba_format(supported, n);
case GL_RGB8:
case GL_RGB10:
case GL_RGB12:
case GL_RGB16:
return default_rgba_format(supported, n);
case GL_RGB5:
case GL_RGB4:
case GL_R3_G3_B2:
if (allow[PIPE_FORMAT_U_A1_R5_G5_B5])
return PIPE_FORMAT_U_A1_R5_G5_B5;
return default_rgba_format(supported, n);
case GL_ALPHA:
case GL_ALPHA4:
case GL_ALPHA8:
case GL_ALPHA12:
case GL_ALPHA16:
case GL_COMPRESSED_ALPHA:
if (allow[PIPE_FORMAT_U_A8])
return PIPE_FORMAT_U_A8;
return default_rgba_format(supported, n);
case 1:
case GL_LUMINANCE:
case GL_LUMINANCE4:
case GL_LUMINANCE8:
case GL_LUMINANCE12:
case GL_LUMINANCE16:
case GL_COMPRESSED_LUMINANCE:
if (allow[PIPE_FORMAT_U_A8])
return PIPE_FORMAT_U_A8;
return default_rgba_format(supported, n);
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 (allow[PIPE_FORMAT_U_A8_L8])
return PIPE_FORMAT_U_A8_L8;
return default_rgba_format(supported, n);
case GL_INTENSITY:
case GL_INTENSITY4:
case GL_INTENSITY8:
case GL_INTENSITY12:
case GL_INTENSITY16:
case GL_COMPRESSED_INTENSITY:
if (allow[PIPE_FORMAT_U_I8])
return PIPE_FORMAT_U_I8;
return default_rgba_format(supported, n);
case GL_YCBCR_MESA:
if (type == GL_UNSIGNED_SHORT_8_8_MESA || type == GL_UNSIGNED_BYTE) {
if (allow[PIPE_FORMAT_YCBCR])
return PIPE_FORMAT_YCBCR;
}
else {
if (allow[PIPE_FORMAT_YCBCR_REV])
return PIPE_FORMAT_YCBCR_REV;
}
return PIPE_FORMAT_NONE;
#if 0
case GL_COMPRESSED_RGB_FXT1_3DFX:
return &_mesa_texformat_rgb_fxt1;
case GL_COMPRESSED_RGBA_FXT1_3DFX:
return &_mesa_texformat_rgba_fxt1;
case GL_RGB_S3TC:
case GL_RGB4_S3TC:
case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
return &_mesa_texformat_rgb_dxt1;
case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
return &_mesa_texformat_rgba_dxt1;
case GL_RGBA_S3TC:
case GL_RGBA4_S3TC:
case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
return &_mesa_texformat_rgba_dxt3;
case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
return &_mesa_texformat_rgba_dxt5;
#endif
case GL_DEPTH_COMPONENT16:
if (allow[PIPE_FORMAT_U_Z16])
return PIPE_FORMAT_U_Z16;
/* fall-through */
case GL_DEPTH_COMPONENT24:
if (allow[PIPE_FORMAT_S8_Z24])
return PIPE_FORMAT_S8_Z24;
/* fall-through */
case GL_DEPTH_COMPONENT32:
if (allow[PIPE_FORMAT_U_Z32])
return PIPE_FORMAT_U_Z32;
/* fall-through */
case GL_DEPTH_COMPONENT:
return default_depth_format(supported, n);
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 (allow[PIPE_FORMAT_U_S8])
return PIPE_FORMAT_U_S8;
if (allow[PIPE_FORMAT_S8_Z24])
return PIPE_FORMAT_S8_Z24;
return PIPE_FORMAT_NONE;
case GL_DEPTH_STENCIL_EXT:
case GL_DEPTH24_STENCIL8_EXT:
if (allow[PIPE_FORMAT_S8_Z24])
return PIPE_FORMAT_S8_Z24;
return PIPE_FORMAT_NONE;
default:
return PIPE_FORMAT_NONE;
}
}
/* It works out that this function is fine for all the supported
* hardware. However, there is still a need to map the formats onto
* hardware descriptors.
*/
/* Note that the i915 can actually support many more formats than
* these if we take the step of simply swizzling the colors
* immediately after sampling...
*/
const struct gl_texture_format *
st_ChooseTextureFormat(GLcontext * ctx, GLint internalFormat,
GLenum format, GLenum type)
{
#if 0
struct intel_context *intel = intel_context(ctx);
const GLboolean do32bpt = (intel->intelScreen->front.cpp == 4);
#else
const GLboolean do32bpt = 1;
#endif
switch (internalFormat) {
case 4:
case GL_RGBA:
case GL_COMPRESSED_RGBA:
if (format == GL_BGRA) {
if (type == GL_UNSIGNED_BYTE || type == GL_UNSIGNED_INT_8_8_8_8_REV) {
return &_mesa_texformat_argb8888;
}
else if (type == GL_UNSIGNED_SHORT_4_4_4_4_REV) {
return &_mesa_texformat_argb4444;
}
else if (type == GL_UNSIGNED_SHORT_1_5_5_5_REV) {
return &_mesa_texformat_argb1555;
}
}
return do32bpt ? &_mesa_texformat_argb8888 : &_mesa_texformat_argb4444;
case 3:
case GL_RGB:
case GL_COMPRESSED_RGB:
if (format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5) {
return &_mesa_texformat_rgb565;
}
return do32bpt ? &_mesa_texformat_argb8888 : &_mesa_texformat_rgb565;
case GL_RGBA8:
case GL_RGB10_A2:
case GL_RGBA12:
case GL_RGBA16:
return do32bpt ? &_mesa_texformat_argb8888 : &_mesa_texformat_argb4444;
case GL_RGBA4:
case GL_RGBA2:
return &_mesa_texformat_argb4444;
case GL_RGB5_A1:
return &_mesa_texformat_argb1555;
case GL_RGB8:
case GL_RGB10:
case GL_RGB12:
case GL_RGB16:
return &_mesa_texformat_argb8888;
case GL_RGB5:
case GL_RGB4:
case GL_R3_G3_B2:
return &_mesa_texformat_rgb565;
case GL_ALPHA:
case GL_ALPHA4:
case GL_ALPHA8:
case GL_ALPHA12:
case GL_ALPHA16:
case GL_COMPRESSED_ALPHA:
return &_mesa_texformat_a8;
case 1:
case GL_LUMINANCE:
case GL_LUMINANCE4:
case GL_LUMINANCE8:
case GL_LUMINANCE12:
case GL_LUMINANCE16:
case GL_COMPRESSED_LUMINANCE:
return &_mesa_texformat_l8;
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:
return &_mesa_texformat_al88;
case GL_INTENSITY:
case GL_INTENSITY4:
case GL_INTENSITY8:
case GL_INTENSITY12:
case GL_INTENSITY16:
case GL_COMPRESSED_INTENSITY:
return &_mesa_texformat_i8;
case GL_YCBCR_MESA:
if (type == GL_UNSIGNED_SHORT_8_8_MESA || type == GL_UNSIGNED_BYTE)
return &_mesa_texformat_ycbcr;
else
return &_mesa_texformat_ycbcr_rev;
case GL_COMPRESSED_RGB_FXT1_3DFX:
return &_mesa_texformat_rgb_fxt1;
case GL_COMPRESSED_RGBA_FXT1_3DFX:
return &_mesa_texformat_rgba_fxt1;
case GL_RGB_S3TC:
case GL_RGB4_S3TC:
case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
return &_mesa_texformat_rgb_dxt1;
case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
return &_mesa_texformat_rgba_dxt1;
case GL_RGBA_S3TC:
case GL_RGBA4_S3TC:
case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
return &_mesa_texformat_rgba_dxt3;
case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
return &_mesa_texformat_rgba_dxt5;
case GL_DEPTH_COMPONENT:
case GL_DEPTH_COMPONENT16:
case GL_DEPTH_COMPONENT24:
case GL_DEPTH_COMPONENT32:
return &_mesa_texformat_z16;
case GL_DEPTH_STENCIL_EXT:
case GL_DEPTH24_STENCIL8_EXT:
return &_mesa_texformat_z24_s8;
default:
fprintf(stderr, "unexpected texture format %s in %s\n",
_mesa_lookup_enum_by_nr(internalFormat), __FUNCTION__);
return NULL;
}
return NULL; /* never get here */
}