/*
* Mesa 3-D graphics library
*
* 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
* THE AUTHORS OR COPYRIGHT HOLDERS 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 "macros.h"
#include "glformats.h"
#include "c11/threads.h"
#include "util/hash_table.h"
/**
* Information about texture formats.
*/
struct gl_format_info
{
mesa_format Name;
/** text name for debugging */
const char *StrName;
enum mesa_format_layout Layout;
/**
* 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.
*/
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 DepthBits;
GLubyte StencilBits;
bool IsSRGBFormat;
/**
* To describe compressed formats. If not compressed, Width=Height=Depth=1.
*/
GLubyte BlockWidth, BlockHeight, BlockDepth;
GLubyte BytesPerBlock;
uint8_t Swizzle[4];
mesa_array_format ArrayFormat;
};
#include "format_info.h"
static const struct gl_format_info *
_mesa_get_format_info(mesa_format format)
{
const struct gl_format_info *info = &format_info[format];
STATIC_ASSERT(ARRAY_SIZE(format_info) == MESA_FORMAT_COUNT);
assert(info->Name == format);
return info;
}
/** Return string name of format (for debugging) */
const char *
_mesa_get_format_name(mesa_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(mesa_format format)
{
const struct gl_format_info *info = _mesa_get_format_info(format);
assert(info->BytesPerBlock);
assert(info->BytesPerBlock <= MAX_PIXEL_BYTES ||
_mesa_is_format_compressed(format));
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(mesa_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:
case GL_INTERNALFORMAT_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:
case GL_INTERNALFORMAT_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:
case GL_INTERNALFORMAT_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:
case GL_INTERNALFORMAT_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:
return 0;
case GL_DEPTH_BITS:
case GL_TEXTURE_DEPTH_SIZE_ARB:
case GL_RENDERBUFFER_DEPTH_SIZE_EXT:
case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
case GL_INTERNALFORMAT_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:
case GL_INTERNALFORMAT_STENCIL_SIZE:
return info->StencilBits;
default:
_mesa_problem(NULL, "bad pname in _mesa_get_format_bits()");
return 0;
}
}
GLuint
_mesa_get_format_max_bits(mesa_format format)
{
const struct gl_format_info *info = _mesa_get_format_info(format);
GLuint max = MAX2(info->RedBits, info->GreenBits);
max = MAX2(max, info->BlueBits);
max = MAX2(max, info->AlphaBits);
max = MAX2(max, info->LuminanceBits);
max = MAX2(max, info->IntensityBits);
max = MAX2(max, info->DepthBits);
max = MAX2(max, info->StencilBits);
return max;
}
/**
* Return the layout type of the given format.
*/
extern enum mesa_format_layout
_mesa_get_format_layout(mesa_format format)
{
const struct gl_format_info *info = _mesa_get_format_info(format);
return info->Layout;
}
/**
* 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(mesa_format format)
{
const struct gl_format_info *info = _mesa_get_format_info(format);
return info->DataType;
}
static GLenum
get_base_format_for_array_format(mesa_array_format format)
{
uint8_t swizzle[4];
int num_channels;
_mesa_array_format_get_swizzle(format, swizzle);
num_channels = _mesa_array_format_get_num_channels(format);
switch (num_channels) {
case 4:
/* FIXME: RGBX formats have 4 channels, but their base format is GL_RGB.
* This is not really a problem for now because we only create array
* formats from GL format/type combinations, and these cannot specify
* RGBX formats.
*/
return GL_RGBA;
case 3:
return GL_RGB;
case 2:
if (swizzle[0] == 0 &&
swizzle[1] == 0 &&
swizzle[2] == 0 &&
swizzle[3] == 1)
return GL_LUMINANCE_ALPHA;
if (swizzle[0] == 1 &&
swizzle[1] == 1 &&
swizzle[2] == 1 &&
swizzle[3] == 0)
return GL_LUMINANCE_ALPHA;
if (swizzle[0] == 0 &&
swizzle[1] == 1 &&
swizzle[2] == 4 &&
swizzle[3] == 5)
return GL_RG;
if (swizzle[0] == 1 &&
swizzle[1] == 0 &&
swizzle[2] == 4 &&
swizzle[3] == 5)
return GL_RG;
break;
case 1:
if (swizzle[0] == 0 &&
swizzle[1] == 0 &&
swizzle[2] == 0 &&
swizzle[3] == 5)
return GL_LUMINANCE;
if (swizzle[0] == 0 &&
swizzle[1] == 0 &&
swizzle[2] == 0 &&
swizzle[3] == 0)
return GL_INTENSITY;
if (swizzle[0] <= MESA_FORMAT_SWIZZLE_W)
return GL_RED;
if (swizzle[1] <= MESA_FORMAT_SWIZZLE_W)
return GL_GREEN;
if (swizzle[2] <= MESA_FORMAT_SWIZZLE_W)
return GL_BLUE;
if (swizzle[3] <= MESA_FORMAT_SWIZZLE_W)
return GL_ALPHA;
break;
}
unreachable("Unsupported format");
}
/**
* 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.
* This functions accepts a mesa_format or a mesa_array_format.
*/
GLenum
_mesa_get_format_base_format(uint32_t format)
{
if (!_mesa_format_is_mesa_array_format(format)) {
const struct gl_format_info *info = _mesa_get_format_info(format);
return info->BaseFormat;
} else {
return get_base_format_for_array_format(format);
}
}
/**
* 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(mesa_format format, GLuint *bw, GLuint *bh)
{
const struct gl_format_info *info = _mesa_get_format_info(format);
/* Use _mesa_get_format_block_size_3d() for 3D blocks. */
assert(info->BlockDepth == 1);
*bw = info->BlockWidth;
*bh = info->BlockHeight;
}
/**
* Return the block size (in pixels) for the given format. Normally
* the block size is 1x1x1. But compressed formats will have block
* sizes of 4x4x4, 3x3x3 pixels, etc.
* \param bw returns block width in pixels
* \param bh returns block height in pixels
* \param bd returns block depth in pixels
*/
void
_mesa_get_format_block_size_3d(mesa_format format,
GLuint *bw,
GLuint *bh,
GLuint *bd)
{
const struct gl_format_info *info = _mesa_get_format_info(format);
*bw = info->BlockWidth;
*bh = info->BlockHeight;
*bd = info->BlockDepth;
}
/**
* Returns the an array of four numbers representing the transformation
* from the RGBA or SZ colorspace to the given format. For array formats,
* the i'th RGBA component is given by:
*
* if (swizzle[i] <= MESA_FORMAT_SWIZZLE_W)
* comp = data[swizzle[i]];
* else if (swizzle[i] == MESA_FORMAT_SWIZZLE_ZERO)
* comp = 0;
* else if (swizzle[i] == MESA_FORMAT_SWIZZLE_ONE)
* comp = 1;
* else if (swizzle[i] == MESA_FORMAT_SWIZZLE_NONE)
* // data does not contain a channel of this format
*
* For packed formats, the swizzle gives the number of components left of
* the least significant bit.
*
* Compressed formats have no swizzle.
*/
void
_mesa_get_format_swizzle(mesa_format format, uint8_t swizzle_out[4])
{
const struct gl_format_info *info = _mesa_get_format_info(format);
memcpy(swizzle_out, info->Swizzle, sizeof(info->Swizzle));
}
mesa_array_format
_mesa_array_format_flip_channels(mesa_array_format format)
{
int num_channels;
uint8_t swizzle[4];
num_channels = _mesa_array_format_get_num_channels(format);
_mesa_array_format_get_swizzle(format, swizzle);
if (num_channels == 1)
return format;
if (num_channels == 2) {
/* Assert that the swizzle makes sense for 2 channels */
for (unsigned i = 0; i < 4; i++)
assert(swizzle[i] != 2 && swizzle[i] != 3);
static const uint8_t flip_xy[6] = { 1, 0, 2, 3, 4, 5 };
_mesa_array_format_set_swizzle(&format,
flip_xy[swizzle[0]], flip_xy[swizzle[1]],
flip_xy[swizzle[2]], flip_xy[swizzle[3]]);
return format;
}
if (num_channels == 4) {
static const uint8_t flip[6] = { 3, 2, 1, 0, 4, 5 };
_mesa_array_format_set_swizzle(&format,
flip[swizzle[0]], flip[swizzle[1]],
flip[swizzle[2]], flip[swizzle[3]]);
return format;
}
unreachable("Invalid array format");
}
uint32_t
_mesa_format_to_array_format(mesa_format format)
{
const struct gl_format_info *info = _mesa_get_format_info(format);
if (info->ArrayFormat && !_mesa_little_endian() &&
info->Layout == MESA_FORMAT_LAYOUT_PACKED)
return _mesa_array_format_flip_channels(info->ArrayFormat);
else
return info->ArrayFormat;
}
static struct hash_table *format_array_format_table;
static once_flag format_array_format_table_exists = ONCE_FLAG_INIT;
static bool
array_formats_equal(const void *a, const void *b)
{
return (intptr_t)a == (intptr_t)b;
}
static void
format_array_format_table_init(void)
{
const struct gl_format_info *info;
mesa_array_format array_format;
unsigned f;
format_array_format_table = _mesa_hash_table_create(NULL, NULL,
array_formats_equal);
if (!format_array_format_table) {
_mesa_error_no_memory(__func__);
return;
}
for (f = 1; f < MESA_FORMAT_COUNT; ++f) {
info = _mesa_get_format_info(f);
if (!info->ArrayFormat)
continue;
if (_mesa_little_endian()) {
array_format = info->ArrayFormat;
} else {
array_format = _mesa_array_format_flip_channels(info->ArrayFormat);
}
/* This can happen and does for some of the BGR formats. Let's take
* the first one in the list.
*/
if (_mesa_hash_table_search_pre_hashed(format_array_format_table,
array_format,
(void *)(intptr_t)array_format))
continue;
_mesa_hash_table_insert_pre_hashed(format_array_format_table,
array_format,
(void *)(intptr_t)array_format,
(void *)(intptr_t)f);
}
}
mesa_format
_mesa_format_from_array_format(uint32_t array_format)
{
struct hash_entry *entry;
assert(_mesa_format_is_mesa_array_format(array_format));
call_once(&format_array_format_table_exists, format_array_format_table_init);
if (!format_array_format_table) {
static const once_flag once_flag_init = ONCE_FLAG_INIT;
format_array_format_table_exists = once_flag_init;
return MESA_FORMAT_NONE;
}
entry = _mesa_hash_table_search_pre_hashed(format_array_format_table,
array_format,
(void *)(intptr_t)array_format);
if (entry)
return (intptr_t)entry->data;
else
return MESA_FORMAT_NONE;
}
/** Is the given format a compressed format? */
GLboolean
_mesa_is_format_compressed(mesa_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(mesa_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(mesa_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;
}
/**
* Is the given format an unsigned integer format?
*/
GLboolean
_mesa_is_format_unsigned(mesa_format format)
{
const struct gl_format_info *info = _mesa_get_format_info(format);
return _mesa_is_type_unsigned(info->DataType);
}
/**
* Does the given format store signed values?
*/
GLboolean
_mesa_is_format_signed(mesa_format format)
{
if (format == MESA_FORMAT_R11G11B10_FLOAT ||
format == MESA_FORMAT_R9G9B9E5_FLOAT) {
/* these packed float formats only store unsigned values */
return GL_FALSE;
}
else {
const struct gl_format_info *info = _mesa_get_format_info(format);
return (info->DataType == GL_SIGNED_NORMALIZED ||
info->DataType == GL_INT ||
info->DataType == GL_FLOAT);
}
}
/**
* Is the given format an integer format?
*/
GLboolean
_mesa_is_format_integer(mesa_format format)
{
const struct gl_format_info *info = _mesa_get_format_info(format);
return (info->DataType == GL_INT || info->DataType == GL_UNSIGNED_INT);
}
/**
* Return true if the given format is a color format.
*/
GLenum
_mesa_is_format_color_format(mesa_format format)
{
const struct gl_format_info *info = _mesa_get_format_info(format);
switch (info->BaseFormat) {
case GL_DEPTH_COMPONENT:
case GL_STENCIL_INDEX:
case GL_DEPTH_STENCIL:
return false;
default:
return true;
}
}
/**
* Return color encoding for given format.
* \return GL_LINEAR or GL_SRGB
*/
GLenum
_mesa_get_format_color_encoding(mesa_format format)
{
const struct gl_format_info *info = _mesa_get_format_info(format);
return info->IsSRGBFormat ? GL_SRGB : GL_LINEAR;
}
/**
* Return TRUE if format is an ETC2 compressed format specified
* by GL_ARB_ES3_compatibility.
*/
bool
_mesa_is_format_etc2(mesa_format format)
{
switch (format) {
case MESA_FORMAT_ETC2_RGB8:
case MESA_FORMAT_ETC2_SRGB8:
case MESA_FORMAT_ETC2_RGBA8_EAC:
case MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC:
case MESA_FORMAT_ETC2_R11_EAC:
case MESA_FORMAT_ETC2_RG11_EAC:
case MESA_FORMAT_ETC2_SIGNED_R11_EAC:
case MESA_FORMAT_ETC2_SIGNED_RG11_EAC:
case MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1:
case MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1:
return GL_TRUE;
default:
return GL_FALSE;
}
}
/**
* For an sRGB format, return the corresponding linear color space format.
* For non-sRGB formats, return the format as-is.
*/
mesa_format
_mesa_get_srgb_format_linear(mesa_format format)
{
switch (format) {
case MESA_FORMAT_BGR_SRGB8:
format = MESA_FORMAT_BGR_UNORM8;
break;
case MESA_FORMAT_A8B8G8R8_SRGB:
format = MESA_FORMAT_A8B8G8R8_UNORM;
break;
case MESA_FORMAT_B8G8R8A8_SRGB:
format = MESA_FORMAT_B8G8R8A8_UNORM;
break;
case MESA_FORMAT_A8R8G8B8_SRGB:
format = MESA_FORMAT_A8R8G8B8_UNORM;
break;
case MESA_FORMAT_R8G8B8A8_SRGB:
format = MESA_FORMAT_R8G8B8A8_UNORM;
break;
case MESA_FORMAT_L_SRGB8:
format = MESA_FORMAT_L_UNORM8;
break;
case MESA_FORMAT_L8A8_SRGB:
format = MESA_FORMAT_L8A8_UNORM;
break;
case MESA_FORMAT_A8L8_SRGB:
format = MESA_FORMAT_A8L8_UNORM;
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;
case MESA_FORMAT_R8G8B8X8_SRGB:
format = MESA_FORMAT_R8G8B8X8_UNORM;
break;
case MESA_FORMAT_X8B8G8R8_SRGB:
format = MESA_FORMAT_X8B8G8R8_UNORM;
break;
case MESA_FORMAT_ETC2_SRGB8:
format = MESA_FORMAT_ETC2_RGB8;
break;
case MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC:
format = MESA_FORMAT_ETC2_RGBA8_EAC;
break;
case MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1:
format = MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1;
break;
case MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM:
format = MESA_FORMAT_BPTC_RGBA_UNORM;
break;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_4x4:
format = MESA_FORMAT_RGBA_ASTC_4x4;
break;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_5x4:
format = MESA_FORMAT_RGBA_ASTC_5x4;
break;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_5x5:
format = MESA_FORMAT_RGBA_ASTC_5x5;
break;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_6x5:
format = MESA_FORMAT_RGBA_ASTC_6x5;
break;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_6x6:
format = MESA_FORMAT_RGBA_ASTC_6x6;
break;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_8x5:
format = MESA_FORMAT_RGBA_ASTC_8x5;
break;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_8x6:
format = MESA_FORMAT_RGBA_ASTC_8x6;
break;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_8x8:
format = MESA_FORMAT_RGBA_ASTC_8x8;
break;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x5:
format = MESA_FORMAT_RGBA_ASTC_10x5;
break;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x6:
format = MESA_FORMAT_RGBA_ASTC_10x6;
break;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x8:
format = MESA_FORMAT_RGBA_ASTC_10x8;
break;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x10:
format = MESA_FORMAT_RGBA_ASTC_10x10;
break;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_12x10:
format = MESA_FORMAT_RGBA_ASTC_12x10;
break;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_12x12:
format = MESA_FORMAT_RGBA_ASTC_12x12;
break;
case MESA_FORMAT_B8G8R8X8_SRGB:
format = MESA_FORMAT_B8G8R8X8_UNORM;
break;
case MESA_FORMAT_X8R8G8B8_SRGB:
format = MESA_FORMAT_X8R8G8B8_UNORM;
break;
default:
break;
}
return format;
}
/**
* If the given format is a compressed format, return a corresponding
* uncompressed format.
*/
mesa_format
_mesa_get_uncompressed_format(mesa_format format)
{
switch (format) {
case MESA_FORMAT_RGB_FXT1:
return MESA_FORMAT_BGR_UNORM8;
case MESA_FORMAT_RGBA_FXT1:
return MESA_FORMAT_A8B8G8R8_UNORM;
case MESA_FORMAT_RGB_DXT1:
case MESA_FORMAT_SRGB_DXT1:
return MESA_FORMAT_BGR_UNORM8;
case MESA_FORMAT_RGBA_DXT1:
case MESA_FORMAT_SRGBA_DXT1:
return MESA_FORMAT_A8B8G8R8_UNORM;
case MESA_FORMAT_RGBA_DXT3:
case MESA_FORMAT_SRGBA_DXT3:
return MESA_FORMAT_A8B8G8R8_UNORM;
case MESA_FORMAT_RGBA_DXT5:
case MESA_FORMAT_SRGBA_DXT5:
return MESA_FORMAT_A8B8G8R8_UNORM;
case MESA_FORMAT_R_RGTC1_UNORM:
return MESA_FORMAT_R_UNORM8;
case MESA_FORMAT_R_RGTC1_SNORM:
return MESA_FORMAT_R_SNORM8;
case MESA_FORMAT_RG_RGTC2_UNORM:
return MESA_FORMAT_R8G8_UNORM;
case MESA_FORMAT_RG_RGTC2_SNORM:
return MESA_FORMAT_R8G8_SNORM;
case MESA_FORMAT_L_LATC1_UNORM:
return MESA_FORMAT_L_UNORM8;
case MESA_FORMAT_L_LATC1_SNORM:
return MESA_FORMAT_L_SNORM8;
case MESA_FORMAT_LA_LATC2_UNORM:
return MESA_FORMAT_L8A8_UNORM;
case MESA_FORMAT_LA_LATC2_SNORM:
return MESA_FORMAT_L8A8_SNORM;
case MESA_FORMAT_ETC1_RGB8:
case MESA_FORMAT_ETC2_RGB8:
case MESA_FORMAT_ETC2_SRGB8:
return MESA_FORMAT_BGR_UNORM8;
case MESA_FORMAT_ETC2_RGBA8_EAC:
case MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC:
case MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1:
case MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1:
return MESA_FORMAT_A8B8G8R8_UNORM;
case MESA_FORMAT_ETC2_R11_EAC:
case MESA_FORMAT_ETC2_SIGNED_R11_EAC:
return MESA_FORMAT_R_UNORM16;
case MESA_FORMAT_ETC2_RG11_EAC:
case MESA_FORMAT_ETC2_SIGNED_RG11_EAC:
return MESA_FORMAT_R16G16_UNORM;
case MESA_FORMAT_BPTC_RGBA_UNORM:
case MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM:
return MESA_FORMAT_A8B8G8R8_UNORM;
case MESA_FORMAT_BPTC_RGB_UNSIGNED_FLOAT:
case MESA_FORMAT_BPTC_RGB_SIGNED_FLOAT:
return MESA_FORMAT_RGB_FLOAT32;
default:
#ifdef DEBUG
assert(!_mesa_is_format_compressed(format));
#endif
return format;
}
}
GLuint
_mesa_format_num_components(mesa_format format)
{
const struct gl_format_info *info = _mesa_get_format_info(format);
return ((info->RedBits > 0) +
(info->GreenBits > 0) +
(info->BlueBits > 0) +
(info->AlphaBits > 0) +
(info->LuminanceBits > 0) +
(info->IntensityBits > 0) +
(info->DepthBits > 0) +
(info->StencilBits > 0));
}
/**
* Returns true if a color format has data stored in the R/G/B/A channels,
* given an index from 0 to 3.
*/
bool
_mesa_format_has_color_component(mesa_format format, int component)
{
const struct gl_format_info *info = _mesa_get_format_info(format);
assert(info->BaseFormat != GL_DEPTH_COMPONENT &&
info->BaseFormat != GL_DEPTH_STENCIL &&
info->BaseFormat != GL_STENCIL_INDEX);
switch (component) {
case 0:
return (info->RedBits + info->IntensityBits + info->LuminanceBits) > 0;
case 1:
return (info->GreenBits + info->IntensityBits + info->LuminanceBits) > 0;
case 2:
return (info->BlueBits + info->IntensityBits + info->LuminanceBits) > 0;
case 3:
return (info->AlphaBits + info->IntensityBits) > 0;
default:
assert(!"Invalid color component: must be 0..3");
return false;
}
}
/**
* Return number of bytes needed to store an image of the given size
* in the given format.
*/
GLuint
_mesa_format_image_size(mesa_format format, GLsizei width,
GLsizei height, GLsizei depth)
{
const struct gl_format_info *info = _mesa_get_format_info(format);
GLuint sz;
/* Strictly speaking, a conditional isn't needed here */
if (info->BlockWidth > 1 || info->BlockHeight > 1 || info->BlockDepth > 1) {
/* compressed format (2D only for now) */
const GLuint bw = info->BlockWidth;
const GLuint bh = info->BlockHeight;
const GLuint bd = info->BlockDepth;
const GLuint wblocks = (width + bw - 1) / bw;
const GLuint hblocks = (height + bh - 1) / bh;
const GLuint dblocks = (depth + bd - 1) / bd;
sz = wblocks * hblocks * dblocks * info->BytesPerBlock;
} else
/* non-compressed */
sz = width * height * depth * info->BytesPerBlock;
return sz;
}
/**
* Same as _mesa_format_image_size() but returns a 64-bit value to
* accommodate very large textures.
*/
uint64_t
_mesa_format_image_size64(mesa_format format, GLsizei width,
GLsizei height, GLsizei depth)
{
const struct gl_format_info *info = _mesa_get_format_info(format);
uint64_t sz;
/* Strictly speaking, a conditional isn't needed here */
if (info->BlockWidth > 1 || info->BlockHeight > 1 || info->BlockDepth > 1) {
/* compressed format (2D only for now) */
const uint64_t bw = info->BlockWidth;
const uint64_t bh = info->BlockHeight;
const uint64_t bd = info->BlockDepth;
const uint64_t wblocks = (width + bw - 1) / bw;
const uint64_t hblocks = (height + bh - 1) / bh;
const uint64_t dblocks = (depth + bd - 1) / bd;
sz = wblocks * hblocks * dblocks * info->BytesPerBlock;
} else
/* non-compressed */
sz = ((uint64_t) width * (uint64_t) height *
(uint64_t) depth * info->BytesPerBlock);
return sz;
}
GLint
_mesa_format_row_stride(mesa_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;
}
}
/**
* Return datatype and number of components per texel for the given
* uncompressed mesa_format. Only used for mipmap generation code.
*/
void
_mesa_uncompressed_format_to_type_and_comps(mesa_format format,
GLenum *datatype, GLuint *comps)
{
switch (format) {
case MESA_FORMAT_A8B8G8R8_UNORM:
case MESA_FORMAT_R8G8B8A8_UNORM:
case MESA_FORMAT_B8G8R8A8_UNORM:
case MESA_FORMAT_A8R8G8B8_UNORM:
case MESA_FORMAT_X8B8G8R8_UNORM:
case MESA_FORMAT_R8G8B8X8_UNORM:
case MESA_FORMAT_B8G8R8X8_UNORM:
case MESA_FORMAT_X8R8G8B8_UNORM:
case MESA_FORMAT_A8B8G8R8_UINT:
case MESA_FORMAT_R8G8B8A8_UINT:
case MESA_FORMAT_B8G8R8A8_UINT:
case MESA_FORMAT_A8R8G8B8_UINT:
*datatype = GL_UNSIGNED_BYTE;
*comps = 4;
return;
case MESA_FORMAT_BGR_UNORM8:
case MESA_FORMAT_RGB_UNORM8:
*datatype = GL_UNSIGNED_BYTE;
*comps = 3;
return;
case MESA_FORMAT_B5G6R5_UNORM:
case MESA_FORMAT_R5G6B5_UNORM:
case MESA_FORMAT_B5G6R5_UINT:
case MESA_FORMAT_R5G6B5_UINT:
*datatype = GL_UNSIGNED_SHORT_5_6_5;
*comps = 3;
return;
case MESA_FORMAT_B4G4R4A4_UNORM:
case MESA_FORMAT_A4R4G4B4_UNORM:
case MESA_FORMAT_B4G4R4X4_UNORM:
case MESA_FORMAT_B4G4R4A4_UINT:
case MESA_FORMAT_A4R4G4B4_UINT:
*datatype = GL_UNSIGNED_SHORT_4_4_4_4;
*comps = 4;
return;
case MESA_FORMAT_B5G5R5A1_UNORM:
case MESA_FORMAT_A1R5G5B5_UNORM:
case MESA_FORMAT_B5G5R5X1_UNORM:
case MESA_FORMAT_B5G5R5A1_UINT:
case MESA_FORMAT_A1R5G5B5_UINT:
*datatype = GL_UNSIGNED_SHORT_1_5_5_5_REV;
*comps = 4;
return;
case MESA_FORMAT_B10G10R10A2_UNORM:
*datatype = GL_UNSIGNED_INT_2_10_10_10_REV;
*comps = 4;
return;
case MESA_FORMAT_A1B5G5R5_UNORM:
case MESA_FORMAT_A1B5G5R5_UINT:
*datatype = GL_UNSIGNED_SHORT_5_5_5_1;
*comps = 4;
return;
case MESA_FORMAT_L4A4_UNORM:
*datatype = MESA_UNSIGNED_BYTE_4_4;
*comps = 2;
return;
case MESA_FORMAT_L8A8_UNORM:
case MESA_FORMAT_A8L8_UNORM:
case MESA_FORMAT_R8G8_UNORM:
case MESA_FORMAT_G8R8_UNORM:
*datatype = GL_UNSIGNED_BYTE;
*comps = 2;
return;
case MESA_FORMAT_L16A16_UNORM:
case MESA_FORMAT_A16L16_UNORM:
case MESA_FORMAT_R16G16_UNORM:
case MESA_FORMAT_G16R16_UNORM:
*datatype = GL_UNSIGNED_SHORT;
*comps = 2;
return;
case MESA_FORMAT_R_UNORM16:
case MESA_FORMAT_A_UNORM16:
case MESA_FORMAT_L_UNORM16:
case MESA_FORMAT_I_UNORM16:
*datatype = GL_UNSIGNED_SHORT;
*comps = 1;
return;
case MESA_FORMAT_R3G3B2_UNORM:
case MESA_FORMAT_R3G3B2_UINT:
*datatype = GL_UNSIGNED_BYTE_2_3_3_REV;
*comps = 3;
return;
case MESA_FORMAT_A4B4G4R4_UNORM:
case MESA_FORMAT_A4B4G4R4_UINT:
*datatype = GL_UNSIGNED_SHORT_4_4_4_4;
*comps = 4;
return;
case MESA_FORMAT_R4G4B4A4_UNORM:
case MESA_FORMAT_R4G4B4A4_UINT:
*datatype = GL_UNSIGNED_SHORT_4_4_4_4;
*comps = 4;
return;
case MESA_FORMAT_R5G5B5A1_UNORM:
case MESA_FORMAT_R5G5B5A1_UINT:
*datatype = GL_UNSIGNED_SHORT_1_5_5_5_REV;
*comps = 4;
return;
case MESA_FORMAT_A2B10G10R10_UNORM:
case MESA_FORMAT_A2B10G10R10_UINT:
*datatype = GL_UNSIGNED_INT_10_10_10_2;
*comps = 4;
return;
case MESA_FORMAT_A2R10G10B10_UNORM:
case MESA_FORMAT_A2R10G10B10_UINT:
*datatype = GL_UNSIGNED_INT_10_10_10_2;
*comps = 4;
return;
case MESA_FORMAT_B2G3R3_UNORM:
case MESA_FORMAT_B2G3R3_UINT:
*datatype = GL_UNSIGNED_BYTE_3_3_2;
*comps = 3;
return;
case MESA_FORMAT_A_UNORM8:
case MESA_FORMAT_L_UNORM8:
case MESA_FORMAT_I_UNORM8:
case MESA_FORMAT_R_UNORM8:
case MESA_FORMAT_S_UINT8:
*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_S8_UINT_Z24_UNORM:
*datatype = GL_UNSIGNED_INT_24_8_MESA;
*comps = 2;
return;
case MESA_FORMAT_Z24_UNORM_S8_UINT:
*datatype = GL_UNSIGNED_INT_8_24_REV_MESA;
*comps = 2;
return;
case MESA_FORMAT_Z_UNORM16:
*datatype = GL_UNSIGNED_SHORT;
*comps = 1;
return;
case MESA_FORMAT_Z24_UNORM_X8_UINT:
*datatype = GL_UNSIGNED_INT;
*comps = 1;
return;
case MESA_FORMAT_X8_UINT_Z24_UNORM:
*datatype = GL_UNSIGNED_INT;
*comps = 1;
return;
case MESA_FORMAT_Z_UNORM32:
*datatype = GL_UNSIGNED_INT;
*comps = 1;
return;
case MESA_FORMAT_Z_FLOAT32:
*datatype = GL_FLOAT;
*comps = 1;
return;
case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
*datatype = GL_FLOAT_32_UNSIGNED_INT_24_8_REV;
*comps = 1;
return;
case MESA_FORMAT_R_SNORM8:
case MESA_FORMAT_A_SNORM8:
case MESA_FORMAT_L_SNORM8:
case MESA_FORMAT_I_SNORM8:
*datatype = GL_BYTE;
*comps = 1;
return;
case MESA_FORMAT_R8G8_SNORM:
case MESA_FORMAT_L8A8_SNORM:
case MESA_FORMAT_A8L8_SNORM:
*datatype = GL_BYTE;
*comps = 2;
return;
case MESA_FORMAT_A8B8G8R8_SNORM:
case MESA_FORMAT_R8G8B8A8_SNORM:
case MESA_FORMAT_X8B8G8R8_SNORM:
*datatype = GL_BYTE;
*comps = 4;
return;
case MESA_FORMAT_RGBA_UNORM16:
*datatype = GL_UNSIGNED_SHORT;
*comps = 4;
return;
case MESA_FORMAT_R_SNORM16:
case MESA_FORMAT_A_SNORM16:
case MESA_FORMAT_L_SNORM16:
case MESA_FORMAT_I_SNORM16:
*datatype = GL_SHORT;
*comps = 1;
return;
case MESA_FORMAT_R16G16_SNORM:
case MESA_FORMAT_LA_SNORM16:
*datatype = GL_SHORT;
*comps = 2;
return;
case MESA_FORMAT_RGB_SNORM16:
*datatype = GL_SHORT;
*comps = 3;
return;
case MESA_FORMAT_RGBA_SNORM16:
*datatype = GL_SHORT;
*comps = 4;
return;
case MESA_FORMAT_BGR_SRGB8:
*datatype = GL_UNSIGNED_BYTE;
*comps = 3;
return;
case MESA_FORMAT_A8B8G8R8_SRGB:
case MESA_FORMAT_B8G8R8A8_SRGB:
case MESA_FORMAT_A8R8G8B8_SRGB:
case MESA_FORMAT_R8G8B8A8_SRGB:
*datatype = GL_UNSIGNED_BYTE;
*comps = 4;
return;
case MESA_FORMAT_L_SRGB8:
*datatype = GL_UNSIGNED_BYTE;
*comps = 1;
return;
case MESA_FORMAT_L8A8_SRGB:
case MESA_FORMAT_A8L8_SRGB:
*datatype = GL_UNSIGNED_BYTE;
*comps = 2;
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_LA_FLOAT32:
case MESA_FORMAT_RG_FLOAT32:
*datatype = GL_FLOAT;
*comps = 2;
return;
case MESA_FORMAT_LA_FLOAT16:
case MESA_FORMAT_RG_FLOAT16:
*datatype = GL_HALF_FLOAT_ARB;
*comps = 2;
return;
case MESA_FORMAT_A_FLOAT32:
case MESA_FORMAT_L_FLOAT32:
case MESA_FORMAT_I_FLOAT32:
case MESA_FORMAT_R_FLOAT32:
*datatype = GL_FLOAT;
*comps = 1;
return;
case MESA_FORMAT_A_FLOAT16:
case MESA_FORMAT_L_FLOAT16:
case MESA_FORMAT_I_FLOAT16:
case MESA_FORMAT_R_FLOAT16:
*datatype = GL_HALF_FLOAT_ARB;
*comps = 1;
return;
case MESA_FORMAT_A_UINT8:
case MESA_FORMAT_L_UINT8:
case MESA_FORMAT_I_UINT8:
*datatype = GL_UNSIGNED_BYTE;
*comps = 1;
return;
case MESA_FORMAT_LA_UINT8:
*datatype = GL_UNSIGNED_BYTE;
*comps = 2;
return;
case MESA_FORMAT_A_UINT16:
case MESA_FORMAT_L_UINT16:
case MESA_FORMAT_I_UINT16:
*datatype = GL_UNSIGNED_SHORT;
*comps = 1;
return;
case MESA_FORMAT_LA_UINT16:
*datatype = GL_UNSIGNED_SHORT;
*comps = 2;
return;
case MESA_FORMAT_A_UINT32:
case MESA_FORMAT_L_UINT32:
case MESA_FORMAT_I_UINT32:
*datatype = GL_UNSIGNED_INT;
*comps = 1;
return;
case MESA_FORMAT_LA_UINT32:
*datatype = GL_UNSIGNED_INT;
*comps = 2;
return;
case MESA_FORMAT_A_SINT8:
case MESA_FORMAT_L_SINT8:
case MESA_FORMAT_I_SINT8:
*datatype = GL_BYTE;
*comps = 1;
return;
case MESA_FORMAT_LA_SINT8:
*datatype = GL_BYTE;
*comps = 2;
return;
case MESA_FORMAT_A_SINT16:
case MESA_FORMAT_L_SINT16:
case MESA_FORMAT_I_SINT16:
*datatype = GL_SHORT;
*comps = 1;
return;
case MESA_FORMAT_LA_SINT16:
*datatype = GL_SHORT;
*comps = 2;
return;
case MESA_FORMAT_A_SINT32:
case MESA_FORMAT_L_SINT32:
case MESA_FORMAT_I_SINT32:
*datatype = GL_INT;
*comps = 1;
return;
case MESA_FORMAT_LA_SINT32:
*datatype = GL_INT;
*comps = 2;
return;
case MESA_FORMAT_R_SINT8:
*datatype = GL_BYTE;
*comps = 1;
return;
case MESA_FORMAT_RG_SINT8:
*datatype = GL_BYTE;
*comps = 2;
return;
case MESA_FORMAT_RGB_SINT8:
*datatype = GL_BYTE;
*comps = 3;
return;
case MESA_FORMAT_RGBA_SINT8:
*datatype = GL_BYTE;
*comps = 4;
return;
case MESA_FORMAT_R_SINT16:
*datatype = GL_SHORT;
*comps = 1;
return;
case MESA_FORMAT_RG_SINT16:
*datatype = GL_SHORT;
*comps = 2;
return;
case MESA_FORMAT_RGB_SINT16:
*datatype = GL_SHORT;
*comps = 3;
return;
case MESA_FORMAT_RGBA_SINT16:
*datatype = GL_SHORT;
*comps = 4;
return;
case MESA_FORMAT_R_SINT32:
*datatype = GL_INT;
*comps = 1;
return;
case MESA_FORMAT_RG_SINT32:
*datatype = GL_INT;
*comps = 2;
return;
case MESA_FORMAT_RGB_SINT32:
*datatype = GL_INT;
*comps = 3;
return;
case MESA_FORMAT_RGBA_SINT32:
*datatype = GL_INT;
*comps = 4;
return;
/**
* \name Non-normalized unsigned integer formats.
*/
case MESA_FORMAT_R_UINT8:
*datatype = GL_UNSIGNED_BYTE;
*comps = 1;
return;
case MESA_FORMAT_RG_UINT8:
*datatype = GL_UNSIGNED_BYTE;
*comps = 2;
return;
case MESA_FORMAT_RGB_UINT8:
*datatype = GL_UNSIGNED_BYTE;
*comps = 3;
return;
case MESA_FORMAT_RGBA_UINT8:
*datatype = GL_UNSIGNED_BYTE;
*comps = 4;
return;
case MESA_FORMAT_R_UINT16:
*datatype = GL_UNSIGNED_SHORT;
*comps = 1;
return;
case MESA_FORMAT_RG_UINT16:
*datatype = GL_UNSIGNED_SHORT;
*comps = 2;
return;
case MESA_FORMAT_RGB_UINT16:
*datatype = GL_UNSIGNED_SHORT;
*comps = 3;
return;
case MESA_FORMAT_RGBA_UINT16:
*datatype = GL_UNSIGNED_SHORT;
*comps = 4;
return;
case MESA_FORMAT_R_UINT32:
*datatype = GL_UNSIGNED_INT;
*comps = 1;
return;
case MESA_FORMAT_RG_UINT32:
*datatype = GL_UNSIGNED_INT;
*comps = 2;
return;
case MESA_FORMAT_RGB_UINT32:
*datatype = GL_UNSIGNED_INT;
*comps = 3;
return;
case MESA_FORMAT_RGBA_UINT32:
*datatype = GL_UNSIGNED_INT;
*comps = 4;
return;
case MESA_FORMAT_R9G9B9E5_FLOAT:
*datatype = GL_UNSIGNED_INT_5_9_9_9_REV;
*comps = 3;
return;
case MESA_FORMAT_R11G11B10_FLOAT:
*datatype = GL_UNSIGNED_INT_10F_11F_11F_REV;
*comps = 3;
return;
case MESA_FORMAT_B10G10R10A2_UINT:
case MESA_FORMAT_R10G10B10A2_UINT:
*datatype = GL_UNSIGNED_INT_2_10_10_10_REV;
*comps = 4;
return;
case MESA_FORMAT_R8G8B8X8_SRGB:
case MESA_FORMAT_X8B8G8R8_SRGB:
case MESA_FORMAT_RGBX_UINT8:
*datatype = GL_UNSIGNED_BYTE;
*comps = 4;
return;
case MESA_FORMAT_R8G8B8X8_SNORM:
case MESA_FORMAT_RGBX_SINT8:
*datatype = GL_BYTE;
*comps = 4;
return;
case MESA_FORMAT_B10G10R10X2_UNORM:
case MESA_FORMAT_R10G10B10X2_UNORM:
*datatype = GL_UNSIGNED_INT_2_10_10_10_REV;
*comps = 4;
return;
case MESA_FORMAT_RGBX_UNORM16:
case MESA_FORMAT_RGBX_UINT16:
*datatype = GL_UNSIGNED_SHORT;
*comps = 4;
return;
case MESA_FORMAT_RGBX_SNORM16:
case MESA_FORMAT_RGBX_SINT16:
*datatype = GL_SHORT;
*comps = 4;
return;
case MESA_FORMAT_RGBX_FLOAT16:
*datatype = GL_HALF_FLOAT;
*comps = 4;
return;
case MESA_FORMAT_RGBX_FLOAT32:
*datatype = GL_FLOAT;
*comps = 4;
return;
case MESA_FORMAT_RGBX_UINT32:
*datatype = GL_UNSIGNED_INT;
*comps = 4;
return;
case MESA_FORMAT_RGBX_SINT32:
*datatype = GL_INT;
*comps = 4;
return;
case MESA_FORMAT_R10G10B10A2_UNORM:
*datatype = GL_UNSIGNED_INT_2_10_10_10_REV;
*comps = 4;
return;
case MESA_FORMAT_G8R8_SNORM:
*datatype = GL_BYTE;
*comps = 2;
return;
case MESA_FORMAT_G16R16_SNORM:
*datatype = GL_SHORT;
*comps = 2;
return;
case MESA_FORMAT_B8G8R8X8_SRGB:
case MESA_FORMAT_X8R8G8B8_SRGB:
*datatype = GL_UNSIGNED_BYTE;
*comps = 4;
return;
case MESA_FORMAT_COUNT:
assert(0);
return;
default:
/* Warn if any formats are not handled */
_mesa_problem(NULL, "bad format %s in _mesa_uncompressed_format_to_type_and_comps",
_mesa_get_format_name(format));
assert(format == MESA_FORMAT_NONE ||
_mesa_is_format_compressed(format));
*datatype = 0;
*comps = 1;
}
}
/**
* Check if a mesa_format exactly matches a GL format/type combination
* such that we can use memcpy() from one to the other.
* \param mesa_format a MESA_FORMAT_x value
* \param format the user-specified image format
* \param type the user-specified image datatype
* \param swapBytes typically the current pixel pack/unpack byteswap state
* \param[out] error GL_NO_ERROR if format is an expected input.
* GL_INVALID_ENUM if format is an unexpected input.
* \return GL_TRUE if the formats match, GL_FALSE otherwise.
*/
GLboolean
_mesa_format_matches_format_and_type(mesa_format mesa_format,
GLenum format, GLenum type,
GLboolean swapBytes, GLenum *error)
{
const GLboolean littleEndian = _mesa_little_endian();
if (error)
*error = GL_NO_ERROR;
/* Note: When reading a GL format/type combination, the format lists channel
* assignments from most significant channel in the type to least
* significant. A type with _REV indicates that the assignments are
* swapped, so they are listed from least significant to most significant.
*
* Compressed formats will fall through and return GL_FALSE.
*
* For sanity, please keep this switch statement ordered the same as the
* enums in formats.h.
*/
switch (mesa_format) {
case MESA_FORMAT_NONE:
case MESA_FORMAT_COUNT:
return GL_FALSE;
case MESA_FORMAT_A8B8G8R8_UNORM:
case MESA_FORMAT_A8B8G8R8_SRGB:
if (format == GL_RGBA && type == GL_UNSIGNED_INT_8_8_8_8 && !swapBytes)
return GL_TRUE;
if (format == GL_RGBA && type == GL_UNSIGNED_INT_8_8_8_8_REV && swapBytes)
return GL_TRUE;
if (format == GL_RGBA && type == GL_UNSIGNED_BYTE && !littleEndian)
return GL_TRUE;
if (format == GL_ABGR_EXT && type == GL_UNSIGNED_INT_8_8_8_8_REV
&& !swapBytes)
return GL_TRUE;
if (format == GL_ABGR_EXT && type == GL_UNSIGNED_INT_8_8_8_8
&& swapBytes)
return GL_TRUE;
if (format == GL_ABGR_EXT && type == GL_UNSIGNED_BYTE && littleEndian)
return GL_TRUE;
return GL_FALSE;
case MESA_FORMAT_R8G8B8A8_UNORM:
case MESA_FORMAT_R8G8B8A8_SRGB:
if (format == GL_RGBA && type == GL_UNSIGNED_INT_8_8_8_8_REV &&
!swapBytes)
return GL_TRUE;
if (format == GL_RGBA && type == GL_UNSIGNED_INT_8_8_8_8 && swapBytes)
return GL_TRUE;
if (format == GL_RGBA && type == GL_UNSIGNED_BYTE && littleEndian)
return GL_TRUE;
if (format == GL_ABGR_EXT && type == GL_UNSIGNED_INT_8_8_8_8 &&
!swapBytes)
return GL_TRUE;
if (format == GL_ABGR_EXT && type == GL_UNSIGNED_INT_8_8_8_8_REV &&
swapBytes)
return GL_TRUE;
if (format == GL_ABGR_EXT && type == GL_UNSIGNED_BYTE && !littleEndian)
return GL_TRUE;
return GL_FALSE;
case MESA_FORMAT_B8G8R8A8_UNORM:
case MESA_FORMAT_B8G8R8A8_SRGB:
if (format == GL_BGRA && type == GL_UNSIGNED_INT_8_8_8_8_REV &&
!swapBytes)
return GL_TRUE;
if (format == GL_BGRA && type == GL_UNSIGNED_INT_8_8_8_8 && swapBytes)
return GL_TRUE;
if (format == GL_BGRA && type == GL_UNSIGNED_BYTE && littleEndian)
return GL_TRUE;
return GL_FALSE;
case MESA_FORMAT_A8R8G8B8_UNORM:
case MESA_FORMAT_A8R8G8B8_SRGB:
if (format == GL_BGRA && type == GL_UNSIGNED_INT_8_8_8_8 && !swapBytes)
return GL_TRUE;
if (format == GL_BGRA && type == GL_UNSIGNED_INT_8_8_8_8_REV &&
swapBytes)
return GL_TRUE;
if (format == GL_BGRA && type == GL_UNSIGNED_BYTE && !littleEndian)
return GL_TRUE;
return GL_FALSE;
case MESA_FORMAT_X8B8G8R8_UNORM:
case MESA_FORMAT_R8G8B8X8_UNORM:
return GL_FALSE;
case MESA_FORMAT_B8G8R8X8_UNORM:
case MESA_FORMAT_X8R8G8B8_UNORM:
return GL_FALSE;
case MESA_FORMAT_BGR_UNORM8:
case MESA_FORMAT_BGR_SRGB8:
return format == GL_BGR && type == GL_UNSIGNED_BYTE && littleEndian;
case MESA_FORMAT_RGB_UNORM8:
return format == GL_RGB && type == GL_UNSIGNED_BYTE && littleEndian;
case MESA_FORMAT_B5G6R5_UNORM:
return ((format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5) ||
(format == GL_BGR && type == GL_UNSIGNED_SHORT_5_6_5_REV)) &&
!swapBytes;
case MESA_FORMAT_R5G6B5_UNORM:
return ((format == GL_BGR && type == GL_UNSIGNED_SHORT_5_6_5) ||
(format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5_REV)) &&
!swapBytes;
case MESA_FORMAT_B4G4R4A4_UNORM:
return format == GL_BGRA && type == GL_UNSIGNED_SHORT_4_4_4_4_REV &&
!swapBytes;
case MESA_FORMAT_A4R4G4B4_UNORM:
return GL_FALSE;
case MESA_FORMAT_A1B5G5R5_UNORM:
return format == GL_RGBA && type == GL_UNSIGNED_SHORT_5_5_5_1 &&
!swapBytes;
case MESA_FORMAT_B5G5R5A1_UNORM:
return format == GL_BGRA && type == GL_UNSIGNED_SHORT_1_5_5_5_REV &&
!swapBytes;
case MESA_FORMAT_A1R5G5B5_UNORM:
return format == GL_BGRA && type == GL_UNSIGNED_SHORT_5_5_5_1 &&
!swapBytes;
case MESA_FORMAT_L4A4_UNORM:
return GL_FALSE;
case MESA_FORMAT_L8A8_UNORM:
case MESA_FORMAT_L8A8_SRGB:
return format == GL_LUMINANCE_ALPHA && type == GL_UNSIGNED_BYTE && littleEndian;
case MESA_FORMAT_A8L8_UNORM:
case MESA_FORMAT_A8L8_SRGB:
return GL_FALSE;
case MESA_FORMAT_L16A16_UNORM:
return format == GL_LUMINANCE_ALPHA && type == GL_UNSIGNED_SHORT && littleEndian && !swapBytes;
case MESA_FORMAT_A16L16_UNORM:
return GL_FALSE;
case MESA_FORMAT_B2G3R3_UNORM:
return format == GL_RGB && type == GL_UNSIGNED_BYTE_3_3_2;
case MESA_FORMAT_R3G3B2_UNORM:
return format == GL_RGB && type == GL_UNSIGNED_BYTE_2_3_3_REV;
case MESA_FORMAT_A4B4G4R4_UNORM:
if (format == GL_RGBA && type == GL_UNSIGNED_SHORT_4_4_4_4 && !swapBytes)
return GL_TRUE;
if (format == GL_RGBA && type == GL_UNSIGNED_SHORT_4_4_4_4_REV && swapBytes)
return GL_TRUE;
if (format == GL_ABGR_EXT && type == GL_UNSIGNED_SHORT_4_4_4_4_REV && !swapBytes)
return GL_TRUE;
if (format == GL_ABGR_EXT && type == GL_UNSIGNED_SHORT_4_4_4_4 && swapBytes)
return GL_TRUE;
return GL_FALSE;
case MESA_FORMAT_R4G4B4A4_UNORM:
if (format == GL_ABGR_EXT && type == GL_UNSIGNED_SHORT_4_4_4_4 && !swapBytes)
return GL_TRUE;
if (format == GL_ABGR_EXT && type == GL_UNSIGNED_SHORT_4_4_4_4_REV && swapBytes)
return GL_TRUE;
if (format == GL_RGBA && type == GL_UNSIGNED_SHORT_4_4_4_4_REV && !swapBytes)
return GL_TRUE;
if (format == GL_RGBA && type == GL_UNSIGNED_SHORT_4_4_4_4 && swapBytes)
return GL_TRUE;
return GL_FALSE;
case MESA_FORMAT_R5G5B5A1_UNORM:
return format == GL_RGBA && type == GL_UNSIGNED_SHORT_1_5_5_5_REV;
case MESA_FORMAT_A2B10G10R10_UNORM:
return format == GL_RGBA && type == GL_UNSIGNED_INT_10_10_10_2;
case MESA_FORMAT_A2B10G10R10_UINT:
return format == GL_RGBA_INTEGER_EXT && type == GL_UNSIGNED_INT_10_10_10_2;
case MESA_FORMAT_A2R10G10B10_UNORM:
return format == GL_BGRA && type == GL_UNSIGNED_INT_10_10_10_2;
case MESA_FORMAT_A2R10G10B10_UINT:
return format == GL_BGRA_INTEGER_EXT && type == GL_UNSIGNED_INT_10_10_10_2;
case MESA_FORMAT_A_UNORM8:
return format == GL_ALPHA && type == GL_UNSIGNED_BYTE;
case MESA_FORMAT_A_UNORM16:
return format == GL_ALPHA && type == GL_UNSIGNED_SHORT && !swapBytes;
case MESA_FORMAT_L_UNORM8:
case MESA_FORMAT_L_SRGB8:
return format == GL_LUMINANCE && type == GL_UNSIGNED_BYTE;
case MESA_FORMAT_L_UNORM16:
return format == GL_LUMINANCE && type == GL_UNSIGNED_SHORT && !swapBytes;
case MESA_FORMAT_I_UNORM8:
return format == GL_RED && type == GL_UNSIGNED_BYTE;
case MESA_FORMAT_I_UNORM16:
return format == GL_RED && type == GL_UNSIGNED_SHORT && !swapBytes;
case MESA_FORMAT_YCBCR:
return format == GL_YCBCR_MESA &&
((type == GL_UNSIGNED_SHORT_8_8_MESA && littleEndian != swapBytes) ||
(type == GL_UNSIGNED_SHORT_8_8_REV_MESA && littleEndian == swapBytes));
case MESA_FORMAT_YCBCR_REV:
return format == GL_YCBCR_MESA &&
((type == GL_UNSIGNED_SHORT_8_8_MESA && littleEndian == swapBytes) ||
(type == GL_UNSIGNED_SHORT_8_8_REV_MESA && littleEndian != swapBytes));
case MESA_FORMAT_R_UNORM8:
return format == GL_RED && type == GL_UNSIGNED_BYTE;
case MESA_FORMAT_R8G8_UNORM:
return format == GL_RG && type == GL_UNSIGNED_BYTE && littleEndian;
case MESA_FORMAT_G8R8_UNORM:
return GL_FALSE;
case MESA_FORMAT_R_UNORM16:
return format == GL_RED && type == GL_UNSIGNED_SHORT &&
!swapBytes;
case MESA_FORMAT_R16G16_UNORM:
return format == GL_RG && type == GL_UNSIGNED_SHORT && littleEndian &&
!swapBytes;
case MESA_FORMAT_G16R16_UNORM:
return GL_FALSE;
case MESA_FORMAT_B10G10R10A2_UNORM:
return format == GL_BGRA && type == GL_UNSIGNED_INT_2_10_10_10_REV &&
!swapBytes;
case MESA_FORMAT_S8_UINT_Z24_UNORM:
return format == GL_DEPTH_STENCIL && type == GL_UNSIGNED_INT_24_8 &&
!swapBytes;
case MESA_FORMAT_X8_UINT_Z24_UNORM:
case MESA_FORMAT_Z24_UNORM_S8_UINT:
return GL_FALSE;
case MESA_FORMAT_Z_UNORM16:
return format == GL_DEPTH_COMPONENT && type == GL_UNSIGNED_SHORT &&
!swapBytes;
case MESA_FORMAT_Z24_UNORM_X8_UINT:
return GL_FALSE;
case MESA_FORMAT_Z_UNORM32:
return format == GL_DEPTH_COMPONENT && type == GL_UNSIGNED_INT &&
!swapBytes;
case MESA_FORMAT_S_UINT8:
return format == GL_STENCIL_INDEX && type == GL_UNSIGNED_BYTE;
case MESA_FORMAT_RGBA_FLOAT32:
return format == GL_RGBA && type == GL_FLOAT && !swapBytes;
case MESA_FORMAT_RGBA_FLOAT16:
return format == GL_RGBA && type == GL_HALF_FLOAT && !swapBytes;
case MESA_FORMAT_RGB_FLOAT32:
return format == GL_RGB && type == GL_FLOAT && !swapBytes;
case MESA_FORMAT_RGB_FLOAT16:
return format == GL_RGB && type == GL_HALF_FLOAT && !swapBytes;
case MESA_FORMAT_A_FLOAT32:
return format == GL_ALPHA && type == GL_FLOAT && !swapBytes;
case MESA_FORMAT_A_FLOAT16:
return format == GL_ALPHA && type == GL_HALF_FLOAT && !swapBytes;
case MESA_FORMAT_L_FLOAT32:
return format == GL_LUMINANCE && type == GL_FLOAT && !swapBytes;
case MESA_FORMAT_L_FLOAT16:
return format == GL_LUMINANCE && type == GL_HALF_FLOAT && !swapBytes;
case MESA_FORMAT_LA_FLOAT32:
return format == GL_LUMINANCE_ALPHA && type == GL_FLOAT && !swapBytes;
case MESA_FORMAT_LA_FLOAT16:
return format == GL_LUMINANCE_ALPHA && type == GL_HALF_FLOAT && !swapBytes;
case MESA_FORMAT_I_FLOAT32:
return format == GL_RED && type == GL_FLOAT && !swapBytes;
case MESA_FORMAT_I_FLOAT16:
return format == GL_RED && type == GL_HALF_FLOAT && !swapBytes;
case MESA_FORMAT_R_FLOAT32:
return format == GL_RED && type == GL_FLOAT && !swapBytes;
case MESA_FORMAT_R_FLOAT16:
return format == GL_RED && type == GL_HALF_FLOAT && !swapBytes;
case MESA_FORMAT_RG_FLOAT32:
return format == GL_RG && type == GL_FLOAT && !swapBytes;
case MESA_FORMAT_RG_FLOAT16:
return format == GL_RG && type == GL_HALF_FLOAT && !swapBytes;
case MESA_FORMAT_A_UINT8:
return format == GL_ALPHA_INTEGER && type == GL_UNSIGNED_BYTE;
case MESA_FORMAT_A_UINT16:
return format == GL_ALPHA_INTEGER && type == GL_UNSIGNED_SHORT &&
!swapBytes;
case MESA_FORMAT_A_UINT32:
return format == GL_ALPHA_INTEGER && type == GL_UNSIGNED_INT &&
!swapBytes;
case MESA_FORMAT_A_SINT8:
return format == GL_ALPHA_INTEGER && type == GL_BYTE;
case MESA_FORMAT_A_SINT16:
return format == GL_ALPHA_INTEGER && type == GL_SHORT && !swapBytes;
case MESA_FORMAT_A_SINT32:
return format == GL_ALPHA_INTEGER && type == GL_INT && !swapBytes;
case MESA_FORMAT_I_UINT8:
return format == GL_RED_INTEGER && type == GL_UNSIGNED_BYTE;
case MESA_FORMAT_I_UINT16:
return format == GL_RED_INTEGER && type == GL_UNSIGNED_SHORT && !swapBytes;
case MESA_FORMAT_I_UINT32:
return format == GL_RED_INTEGER && type == GL_UNSIGNED_INT && !swapBytes;
case MESA_FORMAT_I_SINT8:
return format == GL_RED_INTEGER && type == GL_BYTE;
case MESA_FORMAT_I_SINT16:
return format == GL_RED_INTEGER && type == GL_SHORT && !swapBytes;
case MESA_FORMAT_I_SINT32:
return format == GL_RED_INTEGER && type == GL_INT && !swapBytes;
case MESA_FORMAT_L_UINT8:
return format == GL_LUMINANCE_INTEGER_EXT && type == GL_UNSIGNED_BYTE;
case MESA_FORMAT_L_UINT16:
return format == GL_LUMINANCE_INTEGER_EXT && type == GL_UNSIGNED_SHORT &&
!swapBytes;
case MESA_FORMAT_L_UINT32:
return format == GL_LUMINANCE_INTEGER_EXT && type == GL_UNSIGNED_INT &&
!swapBytes;
case MESA_FORMAT_L_SINT8:
return format == GL_LUMINANCE_INTEGER_EXT && type == GL_BYTE;
case MESA_FORMAT_L_SINT16:
return format == GL_LUMINANCE_INTEGER_EXT && type == GL_SHORT &&
!swapBytes;
case MESA_FORMAT_L_SINT32:
return format == GL_LUMINANCE_INTEGER_EXT && type == GL_INT && !swapBytes;
case MESA_FORMAT_LA_UINT8:
return format == GL_LUMINANCE_ALPHA_INTEGER_EXT &&
type == GL_UNSIGNED_BYTE && !swapBytes;
case MESA_FORMAT_LA_UINT16:
return format == GL_LUMINANCE_ALPHA_INTEGER_EXT &&
type == GL_UNSIGNED_SHORT && !swapBytes;
case MESA_FORMAT_LA_UINT32:
return format == GL_LUMINANCE_ALPHA_INTEGER_EXT &&
type == GL_UNSIGNED_INT && !swapBytes;
case MESA_FORMAT_LA_SINT8:
return format == GL_LUMINANCE_ALPHA_INTEGER_EXT && type == GL_BYTE &&
!swapBytes;
case MESA_FORMAT_LA_SINT16:
return format == GL_LUMINANCE_ALPHA_INTEGER_EXT && type == GL_SHORT &&
!swapBytes;
case MESA_FORMAT_LA_SINT32:
return format == GL_LUMINANCE_ALPHA_INTEGER_EXT && type == GL_INT &&
!swapBytes;
case MESA_FORMAT_R_SINT8:
return format == GL_RED_INTEGER && type == GL_BYTE;
case MESA_FORMAT_RG_SINT8:
return format == GL_RG_INTEGER && type == GL_BYTE && !swapBytes;
case MESA_FORMAT_RGB_SINT8:
return format == GL_RGB_INTEGER && type == GL_BYTE && !swapBytes;
case MESA_FORMAT_RGBA_SINT8:
return format == GL_RGBA_INTEGER && type == GL_BYTE && !swapBytes;
case MESA_FORMAT_R_SINT16:
return format == GL_RED_INTEGER && type == GL_SHORT && !swapBytes;
case MESA_FORMAT_RG_SINT16:
return format == GL_RG_INTEGER && type == GL_SHORT && !swapBytes;
case MESA_FORMAT_RGB_SINT16:
return format == GL_RGB_INTEGER && type == GL_SHORT && !swapBytes;
case MESA_FORMAT_RGBA_SINT16:
return format == GL_RGBA_INTEGER && type == GL_SHORT && !swapBytes;
case MESA_FORMAT_R_SINT32:
return format == GL_RED_INTEGER && type == GL_INT && !swapBytes;
case MESA_FORMAT_RG_SINT32:
return format == GL_RG_INTEGER && type == GL_INT && !swapBytes;
case MESA_FORMAT_RGB_SINT32:
return format == GL_RGB_INTEGER && type == GL_INT && !swapBytes;
case MESA_FORMAT_RGBA_SINT32:
return format == GL_RGBA_INTEGER && type == GL_INT && !swapBytes;
case MESA_FORMAT_R_UINT8:
return format == GL_RED_INTEGER && type == GL_UNSIGNED_BYTE;
case MESA_FORMAT_RG_UINT8:
return format == GL_RG_INTEGER && type == GL_UNSIGNED_BYTE && !swapBytes;
case MESA_FORMAT_RGB_UINT8:
return format == GL_RGB_INTEGER && type == GL_UNSIGNED_BYTE && !swapBytes;
case MESA_FORMAT_RGBA_UINT8:
return format == GL_RGBA_INTEGER && type == GL_UNSIGNED_BYTE &&
!swapBytes;
case MESA_FORMAT_R_UINT16:
return format == GL_RED_INTEGER && type == GL_UNSIGNED_SHORT &&
!swapBytes;
case MESA_FORMAT_RG_UINT16:
return format == GL_RG_INTEGER && type == GL_UNSIGNED_SHORT && !swapBytes;
case MESA_FORMAT_RGB_UINT16:
return format == GL_RGB_INTEGER && type == GL_UNSIGNED_SHORT &&
!swapBytes;
case MESA_FORMAT_RGBA_UINT16:
return format == GL_RGBA_INTEGER && type == GL_UNSIGNED_SHORT &&
!swapBytes;
case MESA_FORMAT_R_UINT32:
return format == GL_RED_INTEGER && type == GL_UNSIGNED_INT && !swapBytes;
case MESA_FORMAT_RG_UINT32:
return format == GL_RG_INTEGER && type == GL_UNSIGNED_INT && !swapBytes;
case MESA_FORMAT_RGB_UINT32:
return format == GL_RGB_INTEGER && type == GL_UNSIGNED_INT && !swapBytes;
case MESA_FORMAT_RGBA_UINT32:
return format == GL_RGBA_INTEGER && type == GL_UNSIGNED_INT && !swapBytes;
case MESA_FORMAT_R_SNORM8:
return format == GL_RED && type == GL_BYTE;
case MESA_FORMAT_R8G8_SNORM:
return format == GL_RG && type == GL_BYTE && littleEndian &&
!swapBytes;
case MESA_FORMAT_X8B8G8R8_SNORM:
return GL_FALSE;
case MESA_FORMAT_A8B8G8R8_SNORM:
if (format == GL_RGBA && type == GL_BYTE && !littleEndian)
return GL_TRUE;
if (format == GL_ABGR_EXT && type == GL_BYTE && littleEndian)
return GL_TRUE;
return GL_FALSE;
case MESA_FORMAT_R8G8B8A8_SNORM:
if (format == GL_RGBA && type == GL_BYTE && littleEndian)
return GL_TRUE;
if (format == GL_ABGR_EXT && type == GL_BYTE && !littleEndian)
return GL_TRUE;
return GL_FALSE;
case MESA_FORMAT_R_SNORM16:
return format == GL_RED && type == GL_SHORT &&
!swapBytes;
case MESA_FORMAT_R16G16_SNORM:
return format == GL_RG && type == GL_SHORT && littleEndian && !swapBytes;
case MESA_FORMAT_RGB_SNORM16:
return format == GL_RGB && type == GL_SHORT && !swapBytes;
case MESA_FORMAT_RGBA_SNORM16:
return format == GL_RGBA && type == GL_SHORT && !swapBytes;
case MESA_FORMAT_RGBA_UNORM16:
return format == GL_RGBA && type == GL_UNSIGNED_SHORT &&
!swapBytes;
case MESA_FORMAT_A_SNORM8:
return format == GL_ALPHA && type == GL_BYTE;
case MESA_FORMAT_L_SNORM8:
return format == GL_LUMINANCE && type == GL_BYTE;
case MESA_FORMAT_L8A8_SNORM:
return format == GL_LUMINANCE_ALPHA && type == GL_BYTE &&
littleEndian && !swapBytes;
case MESA_FORMAT_A8L8_SNORM:
return format == GL_LUMINANCE_ALPHA && type == GL_BYTE &&
!littleEndian && !swapBytes;
case MESA_FORMAT_I_SNORM8:
return format == GL_RED && type == GL_BYTE;
case MESA_FORMAT_A_SNORM16:
return format == GL_ALPHA && type == GL_SHORT && !swapBytes;
case MESA_FORMAT_L_SNORM16:
return format == GL_LUMINANCE && type == GL_SHORT && !swapBytes;
case MESA_FORMAT_LA_SNORM16:
return format == GL_LUMINANCE_ALPHA && type == GL_SHORT &&
littleEndian && !swapBytes;
case MESA_FORMAT_I_SNORM16:
return format == GL_RED && type == GL_SHORT && littleEndian &&
!swapBytes;
case MESA_FORMAT_B10G10R10A2_UINT:
return (format == GL_BGRA_INTEGER_EXT &&
type == GL_UNSIGNED_INT_2_10_10_10_REV &&
!swapBytes);
case MESA_FORMAT_R10G10B10A2_UINT:
return (format == GL_RGBA_INTEGER_EXT &&
type == GL_UNSIGNED_INT_2_10_10_10_REV &&
!swapBytes);
case MESA_FORMAT_B5G6R5_UINT:
return format == GL_RGB_INTEGER && type == GL_UNSIGNED_SHORT_5_6_5;
case MESA_FORMAT_R5G6B5_UINT:
return format == GL_RGB_INTEGER && type == GL_UNSIGNED_SHORT_5_6_5_REV;
case MESA_FORMAT_B2G3R3_UINT:
return format == GL_RGB_INTEGER && type == GL_UNSIGNED_BYTE_3_3_2;
case MESA_FORMAT_R3G3B2_UINT:
return format == GL_RGB_INTEGER && type == GL_UNSIGNED_BYTE_2_3_3_REV;
case MESA_FORMAT_A4B4G4R4_UINT:
if (format == GL_RGBA_INTEGER && type == GL_UNSIGNED_SHORT_4_4_4_4 && !swapBytes)
return GL_TRUE;
if (format == GL_RGBA_INTEGER && type == GL_UNSIGNED_SHORT_4_4_4_4_REV && swapBytes)
return GL_TRUE;
return GL_FALSE;
case MESA_FORMAT_R4G4B4A4_UINT:
if (format == GL_RGBA_INTEGER && type == GL_UNSIGNED_SHORT_4_4_4_4_REV && !swapBytes)
return GL_TRUE;
if (format == GL_RGBA_INTEGER && type == GL_UNSIGNED_SHORT_4_4_4_4 && swapBytes)
return GL_TRUE;
return GL_FALSE;
case MESA_FORMAT_B4G4R4A4_UINT:
return format == GL_BGRA_INTEGER && type == GL_UNSIGNED_SHORT_4_4_4_4_REV &&
!swapBytes;
case MESA_FORMAT_A4R4G4B4_UINT:
return GL_FALSE;
case MESA_FORMAT_A1B5G5R5_UINT:
return format == GL_RGBA_INTEGER && type == GL_UNSIGNED_SHORT_5_5_5_1 &&
!swapBytes;
case MESA_FORMAT_B5G5R5A1_UINT:
return format == GL_BGRA_INTEGER && type == GL_UNSIGNED_SHORT_1_5_5_5_REV &&
!swapBytes;
case MESA_FORMAT_A1R5G5B5_UINT:
return format == GL_BGRA_INTEGER && type == GL_UNSIGNED_SHORT_5_5_5_1 &&
!swapBytes;
case MESA_FORMAT_R5G5B5A1_UINT:
return format == GL_RGBA_INTEGER && type == GL_UNSIGNED_SHORT_1_5_5_5_REV;
case MESA_FORMAT_A8B8G8R8_UINT:
if (format == GL_RGBA_INTEGER && type == GL_UNSIGNED_INT_8_8_8_8 && !swapBytes)
return GL_TRUE;
if (format == GL_RGBA_INTEGER && type == GL_UNSIGNED_INT_8_8_8_8_REV && swapBytes)
return GL_TRUE;
return GL_FALSE;
case MESA_FORMAT_A8R8G8B8_UINT:
if (format == GL_BGRA_INTEGER && type == GL_UNSIGNED_INT_8_8_8_8 &&
!swapBytes)
return GL_TRUE;
if (format == GL_BGRA_INTEGER && type == GL_UNSIGNED_INT_8_8_8_8_REV &&
swapBytes)
return GL_TRUE;
return GL_FALSE;
case MESA_FORMAT_R8G8B8A8_UINT:
if (format == GL_RGBA_INTEGER && type == GL_UNSIGNED_INT_8_8_8_8_REV &&
!swapBytes)
return GL_TRUE;
if (format == GL_RGBA_INTEGER && type == GL_UNSIGNED_INT_8_8_8_8 && swapBytes)
return GL_TRUE;
return GL_FALSE;
case MESA_FORMAT_B8G8R8A8_UINT:
if (format == GL_BGRA_INTEGER && type == GL_UNSIGNED_INT_8_8_8_8_REV &&
!swapBytes)
return GL_TRUE;
if (format == GL_BGRA_INTEGER && type == GL_UNSIGNED_INT_8_8_8_8 && swapBytes)
return GL_TRUE;
return GL_FALSE;
case MESA_FORMAT_R9G9B9E5_FLOAT:
return format == GL_RGB && type == GL_UNSIGNED_INT_5_9_9_9_REV &&
!swapBytes;
case MESA_FORMAT_R11G11B10_FLOAT:
return format == GL_RGB && type == GL_UNSIGNED_INT_10F_11F_11F_REV &&
!swapBytes;
case MESA_FORMAT_Z_FLOAT32:
return format == GL_DEPTH_COMPONENT && type == GL_FLOAT && !swapBytes;
case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
return format == GL_DEPTH_STENCIL &&
type == GL_FLOAT_32_UNSIGNED_INT_24_8_REV && !swapBytes;
case MESA_FORMAT_B4G4R4X4_UNORM:
case MESA_FORMAT_B5G5R5X1_UNORM:
case MESA_FORMAT_R8G8B8X8_SNORM:
case MESA_FORMAT_R8G8B8X8_SRGB:
case MESA_FORMAT_X8B8G8R8_SRGB:
case MESA_FORMAT_RGBX_UINT8:
case MESA_FORMAT_RGBX_SINT8:
case MESA_FORMAT_B10G10R10X2_UNORM:
case MESA_FORMAT_R10G10B10X2_UNORM:
case MESA_FORMAT_RGBX_UNORM16:
case MESA_FORMAT_RGBX_SNORM16:
case MESA_FORMAT_RGBX_FLOAT16:
case MESA_FORMAT_RGBX_UINT16:
case MESA_FORMAT_RGBX_SINT16:
case MESA_FORMAT_RGBX_FLOAT32:
case MESA_FORMAT_RGBX_UINT32:
case MESA_FORMAT_RGBX_SINT32:
return GL_FALSE;
case MESA_FORMAT_R10G10B10A2_UNORM:
return format == GL_RGBA && type == GL_UNSIGNED_INT_2_10_10_10_REV &&
!swapBytes;
case MESA_FORMAT_G8R8_SNORM:
return format == GL_RG && type == GL_BYTE && !littleEndian &&
!swapBytes;
case MESA_FORMAT_G16R16_SNORM:
return format == GL_RG && type == GL_SHORT && !littleEndian &&
!swapBytes;
case MESA_FORMAT_B8G8R8X8_SRGB:
case MESA_FORMAT_X8R8G8B8_SRGB:
return GL_FALSE;
default:
assert(_mesa_is_format_compressed(mesa_format));
if (error)
*error = GL_INVALID_ENUM;
}
return GL_FALSE;
}