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fuchsia / third_party / mesa / 2cbf6ace6fb6b7c4b8ce2b886e8f58cd0107ce45 / . / src / util / format / u_format.h
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/**************************************************************************
*
* Copyright 2009-2010 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 VMWARE 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.
*
**************************************************************************/
#ifndef U_FORMAT_H
#define U_FORMAT_H
#include "pipe/p_format.h"
#include "pipe/p_defines.h"
#include "util/u_debug.h"
#include "c99_compat.h"
union pipe_color_union;
struct pipe_screen;
#ifdef __cplusplus
extern "C" {
#endif
/**
* Describe how to pack/unpack pixels into/from the prescribed format.
*
* XXX: This could be renamed to something like util_format_pack, or broke down
* in flags inside util_format_block that said exactly what we want.
*/
enum util_format_layout {
/**
* Formats with util_format_block::width == util_format_block::height == 1
* that can be described as an ordinary data structure.
*/
UTIL_FORMAT_LAYOUT_PLAIN,
/**
* Formats with sub-sampled channels.
*
* This is for formats like YVYU where there is less than one sample per
* pixel.
*/
UTIL_FORMAT_LAYOUT_SUBSAMPLED,
/**
* S3 Texture Compression formats.
*/
UTIL_FORMAT_LAYOUT_S3TC,
/**
* Red-Green Texture Compression formats.
*/
UTIL_FORMAT_LAYOUT_RGTC,
/**
* Ericsson Texture Compression
*/
UTIL_FORMAT_LAYOUT_ETC,
/**
* BC6/7 Texture Compression
*/
UTIL_FORMAT_LAYOUT_BPTC,
UTIL_FORMAT_LAYOUT_ASTC,
UTIL_FORMAT_LAYOUT_ATC,
/** Formats with 2 or more planes. */
UTIL_FORMAT_LAYOUT_PLANAR2,
UTIL_FORMAT_LAYOUT_PLANAR3,
UTIL_FORMAT_LAYOUT_FXT1 = 10,
/**
* Everything else that doesn't fit in any of the above layouts.
*/
UTIL_FORMAT_LAYOUT_OTHER,
};
struct util_format_block
{
/** Block width in pixels */
unsigned width;
/** Block height in pixels */
unsigned height;
/** Block depth in pixels */
unsigned depth;
/** Block size in bits */
unsigned bits;
};
enum util_format_type {
UTIL_FORMAT_TYPE_VOID = 0,
UTIL_FORMAT_TYPE_UNSIGNED = 1,
UTIL_FORMAT_TYPE_SIGNED = 2,
UTIL_FORMAT_TYPE_FIXED = 3,
UTIL_FORMAT_TYPE_FLOAT = 4
};
enum util_format_colorspace {
UTIL_FORMAT_COLORSPACE_RGB = 0,
UTIL_FORMAT_COLORSPACE_SRGB = 1,
UTIL_FORMAT_COLORSPACE_YUV = 2,
UTIL_FORMAT_COLORSPACE_ZS = 3
};
struct util_format_channel_description
{
unsigned type:5; /**< UTIL_FORMAT_TYPE_x */
unsigned normalized:1;
unsigned pure_integer:1;
unsigned size:9; /**< bits per channel */
unsigned shift:16; /** number of bits from lsb */
};
struct util_format_description
{
enum pipe_format format;
const char *name;
/**
* Short name, striped of the prefix, lower case.
*/
const char *short_name;
/**
* Pixel block dimensions.
*/
struct util_format_block block;
enum util_format_layout layout;
/**
* The number of channels.
*/
unsigned nr_channels:3;
/**
* Whether all channels have the same number of (whole) bytes and type.
*/
unsigned is_array:1;
/**
* Whether the pixel format can be described as a bitfield structure.
*
* In particular:
* - pixel depth must be 8, 16, or 32 bits;
* - all channels must be unsigned, signed, or void
*/
unsigned is_bitmask:1;
/**
* Whether channels have mixed types (ignoring UTIL_FORMAT_TYPE_VOID).
*/
unsigned is_mixed:1;
/**
* Whether the format contains UNORM channels
*/
unsigned is_unorm:1;
/**
* Whether the format contains SNORM channels
*/
unsigned is_snorm:1;
/**
* Input channel description, in the order XYZW.
*
* Only valid for UTIL_FORMAT_LAYOUT_PLAIN formats.
*
* If each channel is accessed as an individual N-byte value, X is always
* at the lowest address in memory, Y is always next, and so on. For all
* currently-defined formats, the N-byte value has native endianness.
*
* If instead a group of channels is accessed as a single N-byte value,
* the order of the channels within that value depends on endianness.
* For big-endian targets, X is the most significant subvalue,
* otherwise it is the least significant one.
*
* For example, if X is 8 bits and Y is 24 bits, the memory order is:
*
* 0 1 2 3
* little-endian: X Yl Ym Yu (l = lower, m = middle, u = upper)
* big-endian: X Yu Ym Yl
*
* If X is 5 bits, Y is 5 bits, Z is 5 bits and W is 1 bit, the layout is:
*
* 0 1
* msb lsb msb lsb
* little-endian: YYYXXXXX WZZZZZYY
* big-endian: XXXXXYYY YYZZZZZW
*/
struct util_format_channel_description channel[4];
/**
* Output channel swizzle.
*
* The order is either:
* - RGBA
* - YUV(A)
* - ZS
* depending on the colorspace.
*/
unsigned char swizzle[4];
/**
* Colorspace transformation.
*/
enum util_format_colorspace colorspace;
};
struct util_format_pack_description {
/**
* Pack pixel blocks from R8G8B8A8_UNORM.
* Note: strides are in bytes.
*
* Only defined for non-depth-stencil formats.
*/
void
(*pack_rgba_8unorm)(uint8_t *restrict dst, unsigned dst_stride,
const uint8_t *restrict src, unsigned src_stride,
unsigned width, unsigned height);
/**
* Pack pixel blocks from R32G32B32A32_FLOAT.
* Note: strides are in bytes.
*
* Only defined for non-depth-stencil formats.
*/
void
(*pack_rgba_float)(uint8_t *restrict dst, unsigned dst_stride,
const float *restrict src, unsigned src_stride,
unsigned width, unsigned height);
/**
* Pack pixels from Z32_FLOAT.
* Note: strides are in bytes.
*
* Only defined for depth formats.
*/
void
(*pack_z_32unorm)(uint8_t *restrict dst, unsigned dst_stride,
const uint32_t *restrict src, unsigned src_stride,
unsigned width, unsigned height);
/**
* Pack pixels from Z32_FLOAT.
* Note: strides are in bytes.
*
* Only defined for depth formats.
*/
void
(*pack_z_float)(uint8_t *restrict dst, unsigned dst_stride,
const float *restrict src, unsigned src_stride,
unsigned width, unsigned height);
/**
* Pack pixels from S8_UINT.
* Note: strides are in bytes.
*
* Only defined for stencil formats.
*/
void
(*pack_s_8uint)(uint8_t *restrict dst, unsigned dst_stride,
const uint8_t *restrict src, unsigned src_stride,
unsigned width, unsigned height);
void
(*pack_rgba_uint)(uint8_t *restrict dst, unsigned dst_stride,
const uint32_t *restrict src, unsigned src_stride,
unsigned width, unsigned height);
void
(*pack_rgba_sint)(uint8_t *restrict dst, unsigned dst_stride,
const int32_t *restrict src, unsigned src_stride,
unsigned width, unsigned height);
};
struct util_format_unpack_description {
/**
* Unpack pixel blocks to R8G8B8A8_UNORM.
* Note: strides are in bytes.
*
* Only defined for non-block non-depth-stencil formats.
*/
void
(*unpack_rgba_8unorm)(uint8_t *restrict dst, const uint8_t *restrict src,
unsigned width);
/**
* Unpack pixel blocks to R8G8B8A8_UNORM.
* Note: strides are in bytes.
*
* Only defined for block non-depth-stencil formats.
*/
void
(*unpack_rgba_8unorm_rect)(uint8_t *restrict dst, unsigned dst_stride,
const uint8_t *restrict src, unsigned src_stride,
unsigned width, unsigned height);
/**
* Fetch a single pixel (i, j) from a block.
*
* XXX: Only defined for a very few select formats.
*/
void
(*fetch_rgba_8unorm)(uint8_t *restrict dst,
const uint8_t *restrict src,
unsigned i, unsigned j);
/**
* Unpack pixel blocks to R32G32B32A32_UINT/_INT_FLOAT based on whether the
* type is pure uint, int, or other.
*
* Note: strides are in bytes.
*
* Only defined for non-block non-depth-stencil formats.
*/
void
(*unpack_rgba)(void *restrict dst, const uint8_t *restrict src,
unsigned width);
/**
* Unpack pixel blocks to R32G32B32A32_UINT/_INT_FLOAT based on whether the
* type is pure uint, int, or other.
*
* Note: strides are in bytes.
*
* Only defined for block non-depth-stencil formats.
*/
void
(*unpack_rgba_rect)(void *restrict dst, unsigned dst_stride,
const uint8_t *restrict src, unsigned src_stride,
unsigned width, unsigned height);
/**
* Unpack pixels to Z32_UNORM.
* Note: strides are in bytes.
*
* Only defined for depth formats.
*/
void
(*unpack_z_32unorm)(uint32_t *restrict dst, unsigned dst_stride,
const uint8_t *restrict src, unsigned src_stride,
unsigned width, unsigned height);
/**
* Unpack pixels to Z32_FLOAT.
* Note: strides are in bytes.
*
* Only defined for depth formats.
*/
void
(*unpack_z_float)(float *restrict dst, unsigned dst_stride,
const uint8_t *restrict src, unsigned src_stride,
unsigned width, unsigned height);
/**
* Unpack pixels to S8_UINT.
* Note: strides are in bytes.
*
* Only defined for stencil formats.
*/
void
(*unpack_s_8uint)(uint8_t *restrict dst, unsigned dst_stride,
const uint8_t *restrict src, unsigned src_stride,
unsigned width, unsigned height);
};
typedef void (*util_format_fetch_rgba_func_ptr)(void *restrict dst, const uint8_t *restrict src,
unsigned i, unsigned j);
/* Silence warnings triggered by sharing function/struct names */
#ifdef __GNUC__
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wshadow"
#endif
const struct util_format_description *
util_format_description(enum pipe_format format) ATTRIBUTE_CONST;
const struct util_format_pack_description *
util_format_pack_description(enum pipe_format format) ATTRIBUTE_CONST;
/* Lookup with CPU detection for choosing optimized paths. */
const struct util_format_unpack_description *
util_format_unpack_description(enum pipe_format format) ATTRIBUTE_CONST;
/* Codegenned table of CPU-agnostic unpack code. */
const struct util_format_unpack_description *
util_format_unpack_description_generic(enum pipe_format format) ATTRIBUTE_CONST;
const struct util_format_unpack_description *
util_format_unpack_description_neon(enum pipe_format format) ATTRIBUTE_CONST;
#ifdef __GNUC__
#pragma GCC diagnostic pop
#endif
/**
* Returns a function to fetch a single pixel (i, j) from a block.
*
* Only defined for non-depth-stencil and non-integer formats.
*/
util_format_fetch_rgba_func_ptr
util_format_fetch_rgba_func(enum pipe_format format) ATTRIBUTE_CONST;
/*
* Format query functions.
*/
static inline const char *
util_format_name(enum pipe_format format)
{
const struct util_format_description *desc = util_format_description(format);
assert(desc);
if (!desc) {
return "PIPE_FORMAT_???";
}
return desc->name;
}
static inline const char *
util_format_short_name(enum pipe_format format)
{
const struct util_format_description *desc = util_format_description(format);
assert(desc);
if (!desc) {
return "???";
}
return desc->short_name;
}
/**
* Whether this format is plain, see UTIL_FORMAT_LAYOUT_PLAIN for more info.
*/
static inline boolean
util_format_is_plain(enum pipe_format format)
{
const struct util_format_description *desc = util_format_description(format);
if (!format) {
return FALSE;
}
return desc->layout == UTIL_FORMAT_LAYOUT_PLAIN ? TRUE : FALSE;
}
static inline boolean
util_format_is_compressed(enum pipe_format format)
{
const struct util_format_description *desc = util_format_description(format);
assert(desc);
if (!desc) {
return FALSE;
}
switch (desc->layout) {
case UTIL_FORMAT_LAYOUT_S3TC:
case UTIL_FORMAT_LAYOUT_RGTC:
case UTIL_FORMAT_LAYOUT_ETC:
case UTIL_FORMAT_LAYOUT_BPTC:
case UTIL_FORMAT_LAYOUT_ASTC:
case UTIL_FORMAT_LAYOUT_ATC:
case UTIL_FORMAT_LAYOUT_FXT1:
/* XXX add other formats in the future */
return TRUE;
default:
return FALSE;
}
}
static inline boolean
util_format_is_s3tc(enum pipe_format format)
{
const struct util_format_description *desc = util_format_description(format);
assert(desc);
if (!desc) {
return FALSE;
}
return desc->layout == UTIL_FORMAT_LAYOUT_S3TC ? TRUE : FALSE;
}
static inline boolean
util_format_is_etc(enum pipe_format format)
{
const struct util_format_description *desc = util_format_description(format);
assert(desc);
if (!desc) {
return FALSE;
}
return desc->layout == UTIL_FORMAT_LAYOUT_ETC ? TRUE : FALSE;
}
static inline boolean
util_format_is_srgb(enum pipe_format format)
{
const struct util_format_description *desc = util_format_description(format);
return desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB;
}
static inline boolean
util_format_has_depth(const struct util_format_description *desc)
{
return desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS &&
desc->swizzle[0] != PIPE_SWIZZLE_NONE;
}
static inline boolean
util_format_has_stencil(const struct util_format_description *desc)
{
return desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS &&
desc->swizzle[1] != PIPE_SWIZZLE_NONE;
}
static inline boolean
util_format_is_depth_or_stencil(enum pipe_format format)
{
const struct util_format_description *desc = util_format_description(format);
assert(desc);
if (!desc) {
return FALSE;
}
return util_format_has_depth(desc) ||
util_format_has_stencil(desc);
}
static inline boolean
util_format_is_depth_and_stencil(enum pipe_format format)
{
const struct util_format_description *desc = util_format_description(format);
assert(desc);
if (!desc) {
return FALSE;
}
return util_format_has_depth(desc) &&
util_format_has_stencil(desc);
}
/**
* For depth-stencil formats, return the equivalent depth-only format.
*/
static inline enum pipe_format
util_format_get_depth_only(enum pipe_format format)
{
switch (format) {
case PIPE_FORMAT_Z24_UNORM_S8_UINT:
return PIPE_FORMAT_Z24X8_UNORM;
case PIPE_FORMAT_S8_UINT_Z24_UNORM:
return PIPE_FORMAT_X8Z24_UNORM;
case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT:
return PIPE_FORMAT_Z32_FLOAT;
default:
return format;
}
}
static inline boolean
util_format_is_yuv(enum pipe_format format)
{
const struct util_format_description *desc = util_format_description(format);
assert(desc);
if (!desc) {
return FALSE;
}
return desc->colorspace == UTIL_FORMAT_COLORSPACE_YUV;
}
/**
* Calculates the depth format type based upon the incoming format description.
*/
static inline unsigned
util_get_depth_format_type(const struct util_format_description *desc)
{
unsigned depth_channel = desc->swizzle[0];
if (desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS &&
depth_channel != PIPE_SWIZZLE_NONE) {
return desc->channel[depth_channel].type;
} else {
return UTIL_FORMAT_TYPE_VOID;
}
}
/**
* Calculates the MRD for the depth format. MRD is used in depth bias
* for UNORM and unbound depth buffers. When the depth buffer is floating
* point, the depth bias calculation does not use the MRD. However, the
* default MRD will be 1.0 / ((1 << 24) - 1).
*/
double
util_get_depth_format_mrd(const struct util_format_description *desc);
/**
* Return whether this is an RGBA, Z, S, or combined ZS format.
* Useful for initializing pipe_blit_info::mask.
*/
static inline unsigned
util_format_get_mask(enum pipe_format format)
{
const struct util_format_description *desc =
util_format_description(format);
if (!desc)
return 0;
if (util_format_has_depth(desc)) {
if (util_format_has_stencil(desc)) {
return PIPE_MASK_ZS;
} else {
return PIPE_MASK_Z;
}
} else {
if (util_format_has_stencil(desc)) {
return PIPE_MASK_S;
} else {
return PIPE_MASK_RGBA;
}
}
}
/**
* Give the RGBA colormask of the channels that can be represented in this
* format.
*
* That is, the channels whose values are preserved.
*/
static inline unsigned
util_format_colormask(const struct util_format_description *desc)
{
unsigned colormask;
unsigned chan;
switch (desc->colorspace) {
case UTIL_FORMAT_COLORSPACE_RGB:
case UTIL_FORMAT_COLORSPACE_SRGB:
case UTIL_FORMAT_COLORSPACE_YUV:
colormask = 0;
for (chan = 0; chan < 4; ++chan) {
if (desc->swizzle[chan] < 4) {
colormask |= (1 << chan);
}
}
return colormask;
case UTIL_FORMAT_COLORSPACE_ZS:
return 0;
default:
assert(0);
return 0;
}
}
/**
* Checks if color mask covers every channel for the specified format
*
* @param desc a format description to check colormask with
* @param colormask a bit mask for channels, matches format of PIPE_MASK_RGBA
*/
static inline boolean
util_format_colormask_full(const struct util_format_description *desc, unsigned colormask)
{
return (~colormask & util_format_colormask(desc)) == 0;
}
boolean
util_format_is_float(enum pipe_format format) ATTRIBUTE_CONST;
boolean
util_format_has_alpha(enum pipe_format format) ATTRIBUTE_CONST;
boolean
util_format_has_alpha1(enum pipe_format format) ATTRIBUTE_CONST;
boolean
util_format_is_luminance(enum pipe_format format) ATTRIBUTE_CONST;
boolean
util_format_is_alpha(enum pipe_format format) ATTRIBUTE_CONST;
boolean
util_format_is_luminance_alpha(enum pipe_format format) ATTRIBUTE_CONST;
boolean
util_format_is_intensity(enum pipe_format format) ATTRIBUTE_CONST;
boolean
util_format_is_subsampled_422(enum pipe_format format) ATTRIBUTE_CONST;
boolean
util_format_is_pure_integer(enum pipe_format format) ATTRIBUTE_CONST;
boolean
util_format_is_pure_sint(enum pipe_format format) ATTRIBUTE_CONST;
boolean
util_format_is_pure_uint(enum pipe_format format) ATTRIBUTE_CONST;
boolean
util_format_is_snorm(enum pipe_format format) ATTRIBUTE_CONST;
boolean
util_format_is_unorm(enum pipe_format format) ATTRIBUTE_CONST;
boolean
util_format_is_snorm8(enum pipe_format format) ATTRIBUTE_CONST;
boolean
util_format_is_scaled(enum pipe_format format) ATTRIBUTE_CONST;
/**
* Check if the src format can be blitted to the destination format with
* a simple memcpy. For example, blitting from RGBA to RGBx is OK, but not
* the reverse.
*/
boolean
util_is_format_compatible(const struct util_format_description *src_desc,
const struct util_format_description *dst_desc) ATTRIBUTE_CONST;
/**
* Whether this format is a rgab8 variant.
*
* That is, any format that matches the
*
* PIPE_FORMAT_?8?8?8?8_UNORM
*/
static inline boolean
util_format_is_rgba8_variant(const struct util_format_description *desc)
{
unsigned chan;
if(desc->block.width != 1 ||
desc->block.height != 1 ||
desc->block.bits != 32)
return FALSE;
for(chan = 0; chan < 4; ++chan) {
if(desc->channel[chan].type != UTIL_FORMAT_TYPE_UNSIGNED &&
desc->channel[chan].type != UTIL_FORMAT_TYPE_VOID)
return FALSE;
if(desc->channel[chan].type == UTIL_FORMAT_TYPE_UNSIGNED &&
!desc->channel[chan].normalized)
return FALSE;
if(desc->channel[chan].size != 8)
return FALSE;
}
return TRUE;
}
static inline bool
util_format_is_rgbx_or_bgrx(enum pipe_format format)
{
const struct util_format_description *desc = util_format_description(format);
return desc->layout == UTIL_FORMAT_LAYOUT_PLAIN &&
desc->nr_channels == 4 &&
(desc->swizzle[0] == PIPE_SWIZZLE_X || desc->swizzle[0] == PIPE_SWIZZLE_Z) &&
desc->swizzle[1] == PIPE_SWIZZLE_Y &&
(desc->swizzle[2] == PIPE_SWIZZLE_Z || desc->swizzle[2] == PIPE_SWIZZLE_X) &&
desc->swizzle[3] == PIPE_SWIZZLE_1;
}
/**
* Return total bits needed for the pixel format per block.
*/
static inline uint
util_format_get_blocksizebits(enum pipe_format format)
{
const struct util_format_description *desc = util_format_description(format);
assert(desc);
if (!desc) {
return 0;
}
return desc->block.bits;
}
/**
* Return bytes per block (not pixel) for the given format.
*/
static inline uint
util_format_get_blocksize(enum pipe_format format)
{
uint bits = util_format_get_blocksizebits(format);
uint bytes = bits / 8;
assert(bits % 8 == 0);
/* Some formats have bits set to 0, let's default to 1.*/
if (bytes == 0) {
bytes = 1;
}
return bytes;
}
static inline uint
util_format_get_blockwidth(enum pipe_format format)
{
const struct util_format_description *desc = util_format_description(format);
assert(desc);
if (!desc) {
return 1;
}
return desc->block.width;
}
static inline uint
util_format_get_blockheight(enum pipe_format format)
{
const struct util_format_description *desc = util_format_description(format);
assert(desc);
if (!desc) {
return 1;
}
return desc->block.height;
}
static inline uint
util_format_get_blockdepth(enum pipe_format format)
{
const struct util_format_description *desc = util_format_description(format);
assert(desc);
if (!desc) {
return 1;
}
return desc->block.depth;
}
static inline unsigned
util_format_get_nblocksx(enum pipe_format format,
unsigned x)
{
unsigned blockwidth = util_format_get_blockwidth(format);
return (x + blockwidth - 1) / blockwidth;
}
static inline unsigned
util_format_get_nblocksy(enum pipe_format format,
unsigned y)
{
unsigned blockheight = util_format_get_blockheight(format);
return (y + blockheight - 1) / blockheight;
}
static inline unsigned
util_format_get_nblocksz(enum pipe_format format,
unsigned z)
{
unsigned blockdepth = util_format_get_blockdepth(format);
return (z + blockdepth - 1) / blockdepth;
}
static inline unsigned
util_format_get_nblocks(enum pipe_format format,
unsigned width,
unsigned height)
{
assert(util_format_get_blockdepth(format) == 1);
return util_format_get_nblocksx(format, width) * util_format_get_nblocksy(format, height);
}
static inline size_t
util_format_get_stride(enum pipe_format format,
unsigned width)
{
return (size_t)util_format_get_nblocksx(format, width) * util_format_get_blocksize(format);
}
static inline size_t
util_format_get_2d_size(enum pipe_format format,
size_t stride,
unsigned height)
{
return util_format_get_nblocksy(format, height) * stride;
}
static inline uint
util_format_get_component_bits(enum pipe_format format,
enum util_format_colorspace colorspace,
uint component)
{
const struct util_format_description *desc = util_format_description(format);
enum util_format_colorspace desc_colorspace;
assert(format);
if (!format) {
return 0;
}
assert(component < 4);
/* Treat RGB and SRGB as equivalent. */
if (colorspace == UTIL_FORMAT_COLORSPACE_SRGB) {
colorspace = UTIL_FORMAT_COLORSPACE_RGB;
}
if (desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB) {
desc_colorspace = UTIL_FORMAT_COLORSPACE_RGB;
} else {
desc_colorspace = desc->colorspace;
}
if (desc_colorspace != colorspace) {
return 0;
}
switch (desc->swizzle[component]) {
case PIPE_SWIZZLE_X:
return desc->channel[0].size;
case PIPE_SWIZZLE_Y:
return desc->channel[1].size;
case PIPE_SWIZZLE_Z:
return desc->channel[2].size;
case PIPE_SWIZZLE_W:
return desc->channel[3].size;
default:
return 0;
}
}
/**
* Given a linear RGB colorspace format, return the corresponding SRGB
* format, or PIPE_FORMAT_NONE if none.
*/
static inline enum pipe_format
util_format_srgb(enum pipe_format format)
{
if (util_format_is_srgb(format))
return format;
switch (format) {
case PIPE_FORMAT_L8_UNORM:
return PIPE_FORMAT_L8_SRGB;
case PIPE_FORMAT_R8_UNORM:
return PIPE_FORMAT_R8_SRGB;
case PIPE_FORMAT_L8A8_UNORM:
return PIPE_FORMAT_L8A8_SRGB;
case PIPE_FORMAT_R8G8_UNORM:
return PIPE_FORMAT_R8G8_SRGB;
case PIPE_FORMAT_R8G8B8_UNORM:
return PIPE_FORMAT_R8G8B8_SRGB;
case PIPE_FORMAT_B8G8R8_UNORM:
return PIPE_FORMAT_B8G8R8_SRGB;
case PIPE_FORMAT_A8B8G8R8_UNORM:
return PIPE_FORMAT_A8B8G8R8_SRGB;
case PIPE_FORMAT_X8B8G8R8_UNORM:
return PIPE_FORMAT_X8B8G8R8_SRGB;
case PIPE_FORMAT_B8G8R8A8_UNORM:
return PIPE_FORMAT_B8G8R8A8_SRGB;
case PIPE_FORMAT_B8G8R8X8_UNORM:
return PIPE_FORMAT_B8G8R8X8_SRGB;
case PIPE_FORMAT_A8R8G8B8_UNORM:
return PIPE_FORMAT_A8R8G8B8_SRGB;
case PIPE_FORMAT_X8R8G8B8_UNORM:
return PIPE_FORMAT_X8R8G8B8_SRGB;
case PIPE_FORMAT_R8G8B8A8_UNORM:
return PIPE_FORMAT_R8G8B8A8_SRGB;
case PIPE_FORMAT_R8G8B8X8_UNORM:
return PIPE_FORMAT_R8G8B8X8_SRGB;
case PIPE_FORMAT_DXT1_RGB:
return PIPE_FORMAT_DXT1_SRGB;
case PIPE_FORMAT_DXT1_RGBA:
return PIPE_FORMAT_DXT1_SRGBA;
case PIPE_FORMAT_DXT3_RGBA:
return PIPE_FORMAT_DXT3_SRGBA;
case PIPE_FORMAT_DXT5_RGBA:
return PIPE_FORMAT_DXT5_SRGBA;
case PIPE_FORMAT_R5G6B5_UNORM:
return PIPE_FORMAT_R5G6B5_SRGB;
case PIPE_FORMAT_B5G6R5_UNORM:
return PIPE_FORMAT_B5G6R5_SRGB;
case PIPE_FORMAT_BPTC_RGBA_UNORM:
return PIPE_FORMAT_BPTC_SRGBA;
case PIPE_FORMAT_ETC2_RGB8:
return PIPE_FORMAT_ETC2_SRGB8;
case PIPE_FORMAT_ETC2_RGB8A1:
return PIPE_FORMAT_ETC2_SRGB8A1;
case PIPE_FORMAT_ETC2_RGBA8:
return PIPE_FORMAT_ETC2_SRGBA8;
case PIPE_FORMAT_ASTC_4x4:
return PIPE_FORMAT_ASTC_4x4_SRGB;
case PIPE_FORMAT_ASTC_5x4:
return PIPE_FORMAT_ASTC_5x4_SRGB;
case PIPE_FORMAT_ASTC_5x5:
return PIPE_FORMAT_ASTC_5x5_SRGB;
case PIPE_FORMAT_ASTC_6x5:
return PIPE_FORMAT_ASTC_6x5_SRGB;
case PIPE_FORMAT_ASTC_6x6:
return PIPE_FORMAT_ASTC_6x6_SRGB;
case PIPE_FORMAT_ASTC_8x5:
return PIPE_FORMAT_ASTC_8x5_SRGB;
case PIPE_FORMAT_ASTC_8x6:
return PIPE_FORMAT_ASTC_8x6_SRGB;
case PIPE_FORMAT_ASTC_8x8:
return PIPE_FORMAT_ASTC_8x8_SRGB;
case PIPE_FORMAT_ASTC_10x5:
return PIPE_FORMAT_ASTC_10x5_SRGB;
case PIPE_FORMAT_ASTC_10x6:
return PIPE_FORMAT_ASTC_10x6_SRGB;
case PIPE_FORMAT_ASTC_10x8:
return PIPE_FORMAT_ASTC_10x8_SRGB;
case PIPE_FORMAT_ASTC_10x10:
return PIPE_FORMAT_ASTC_10x10_SRGB;
case PIPE_FORMAT_ASTC_12x10:
return PIPE_FORMAT_ASTC_12x10_SRGB;
case PIPE_FORMAT_ASTC_12x12:
return PIPE_FORMAT_ASTC_12x12_SRGB;
case PIPE_FORMAT_ASTC_3x3x3:
return PIPE_FORMAT_ASTC_3x3x3_SRGB;
case PIPE_FORMAT_ASTC_4x3x3:
return PIPE_FORMAT_ASTC_4x3x3_SRGB;
case PIPE_FORMAT_ASTC_4x4x3:
return PIPE_FORMAT_ASTC_4x4x3_SRGB;
case PIPE_FORMAT_ASTC_4x4x4:
return PIPE_FORMAT_ASTC_4x4x4_SRGB;
case PIPE_FORMAT_ASTC_5x4x4:
return PIPE_FORMAT_ASTC_5x4x4_SRGB;
case PIPE_FORMAT_ASTC_5x5x4:
return PIPE_FORMAT_ASTC_5x5x4_SRGB;
case PIPE_FORMAT_ASTC_5x5x5:
return PIPE_FORMAT_ASTC_5x5x5_SRGB;
case PIPE_FORMAT_ASTC_6x5x5:
return PIPE_FORMAT_ASTC_6x5x5_SRGB;
case PIPE_FORMAT_ASTC_6x6x5:
return PIPE_FORMAT_ASTC_6x6x5_SRGB;
case PIPE_FORMAT_ASTC_6x6x6:
return PIPE_FORMAT_ASTC_6x6x6_SRGB;
default:
return PIPE_FORMAT_NONE;
}
}
/**
* Given an sRGB format, return the corresponding linear colorspace format.
* For non sRGB formats, return the format unchanged.
*/
static inline enum pipe_format
util_format_linear(enum pipe_format format)
{
switch (format) {
case PIPE_FORMAT_L8_SRGB:
return PIPE_FORMAT_L8_UNORM;
case PIPE_FORMAT_R8_SRGB:
return PIPE_FORMAT_R8_UNORM;
case PIPE_FORMAT_L8A8_SRGB:
return PIPE_FORMAT_L8A8_UNORM;
case PIPE_FORMAT_R8G8_SRGB:
return PIPE_FORMAT_R8G8_UNORM;
case PIPE_FORMAT_R8G8B8_SRGB:
return PIPE_FORMAT_R8G8B8_UNORM;
case PIPE_FORMAT_B8G8R8_SRGB:
return PIPE_FORMAT_B8G8R8_UNORM;
case PIPE_FORMAT_A8B8G8R8_SRGB:
return PIPE_FORMAT_A8B8G8R8_UNORM;
case PIPE_FORMAT_X8B8G8R8_SRGB:
return PIPE_FORMAT_X8B8G8R8_UNORM;
case PIPE_FORMAT_B8G8R8A8_SRGB:
return PIPE_FORMAT_B8G8R8A8_UNORM;
case PIPE_FORMAT_B8G8R8X8_SRGB:
return PIPE_FORMAT_B8G8R8X8_UNORM;
case PIPE_FORMAT_A8R8G8B8_SRGB:
return PIPE_FORMAT_A8R8G8B8_UNORM;
case PIPE_FORMAT_X8R8G8B8_SRGB:
return PIPE_FORMAT_X8R8G8B8_UNORM;
case PIPE_FORMAT_R8G8B8A8_SRGB:
return PIPE_FORMAT_R8G8B8A8_UNORM;
case PIPE_FORMAT_R8G8B8X8_SRGB:
return PIPE_FORMAT_R8G8B8X8_UNORM;
case PIPE_FORMAT_DXT1_SRGB:
return PIPE_FORMAT_DXT1_RGB;
case PIPE_FORMAT_DXT1_SRGBA:
return PIPE_FORMAT_DXT1_RGBA;
case PIPE_FORMAT_DXT3_SRGBA:
return PIPE_FORMAT_DXT3_RGBA;
case PIPE_FORMAT_DXT5_SRGBA:
return PIPE_FORMAT_DXT5_RGBA;
case PIPE_FORMAT_R5G6B5_SRGB:
return PIPE_FORMAT_R5G6B5_UNORM;
case PIPE_FORMAT_B5G6R5_SRGB:
return PIPE_FORMAT_B5G6R5_UNORM;
case PIPE_FORMAT_BPTC_SRGBA:
return PIPE_FORMAT_BPTC_RGBA_UNORM;
case PIPE_FORMAT_ETC2_SRGB8:
return PIPE_FORMAT_ETC2_RGB8;
case PIPE_FORMAT_ETC2_SRGB8A1:
return PIPE_FORMAT_ETC2_RGB8A1;
case PIPE_FORMAT_ETC2_SRGBA8:
return PIPE_FORMAT_ETC2_RGBA8;
case PIPE_FORMAT_ASTC_4x4_SRGB:
return PIPE_FORMAT_ASTC_4x4;
case PIPE_FORMAT_ASTC_5x4_SRGB:
return PIPE_FORMAT_ASTC_5x4;
case PIPE_FORMAT_ASTC_5x5_SRGB:
return PIPE_FORMAT_ASTC_5x5;
case PIPE_FORMAT_ASTC_6x5_SRGB:
return PIPE_FORMAT_ASTC_6x5;
case PIPE_FORMAT_ASTC_6x6_SRGB:
return PIPE_FORMAT_ASTC_6x6;
case PIPE_FORMAT_ASTC_8x5_SRGB:
return PIPE_FORMAT_ASTC_8x5;
case PIPE_FORMAT_ASTC_8x6_SRGB:
return PIPE_FORMAT_ASTC_8x6;
case PIPE_FORMAT_ASTC_8x8_SRGB:
return PIPE_FORMAT_ASTC_8x8;
case PIPE_FORMAT_ASTC_10x5_SRGB:
return PIPE_FORMAT_ASTC_10x5;
case PIPE_FORMAT_ASTC_10x6_SRGB:
return PIPE_FORMAT_ASTC_10x6;
case PIPE_FORMAT_ASTC_10x8_SRGB:
return PIPE_FORMAT_ASTC_10x8;
case PIPE_FORMAT_ASTC_10x10_SRGB:
return PIPE_FORMAT_ASTC_10x10;
case PIPE_FORMAT_ASTC_12x10_SRGB:
return PIPE_FORMAT_ASTC_12x10;
case PIPE_FORMAT_ASTC_12x12_SRGB:
return PIPE_FORMAT_ASTC_12x12;
case PIPE_FORMAT_ASTC_3x3x3_SRGB:
return PIPE_FORMAT_ASTC_3x3x3;
case PIPE_FORMAT_ASTC_4x3x3_SRGB:
return PIPE_FORMAT_ASTC_4x3x3;
case PIPE_FORMAT_ASTC_4x4x3_SRGB:
return PIPE_FORMAT_ASTC_4x4x3;
case PIPE_FORMAT_ASTC_4x4x4_SRGB:
return PIPE_FORMAT_ASTC_4x4x4;
case PIPE_FORMAT_ASTC_5x4x4_SRGB:
return PIPE_FORMAT_ASTC_5x4x4;
case PIPE_FORMAT_ASTC_5x5x4_SRGB:
return PIPE_FORMAT_ASTC_5x5x4;
case PIPE_FORMAT_ASTC_5x5x5_SRGB:
return PIPE_FORMAT_ASTC_5x5x5;
case PIPE_FORMAT_ASTC_6x5x5_SRGB:
return PIPE_FORMAT_ASTC_6x5x5;
case PIPE_FORMAT_ASTC_6x6x5_SRGB:
return PIPE_FORMAT_ASTC_6x6x5;
case PIPE_FORMAT_ASTC_6x6x6_SRGB:
return PIPE_FORMAT_ASTC_6x6x6;
default:
assert(!util_format_is_srgb(format));
return format;
}
}
/**
* Given a depth-stencil format, return the corresponding stencil-only format.
* For stencil-only formats, return the format unchanged.
*/
static inline enum pipe_format
util_format_stencil_only(enum pipe_format format)
{
switch (format) {
/* mask out the depth component */
case PIPE_FORMAT_Z24_UNORM_S8_UINT:
return PIPE_FORMAT_X24S8_UINT;
case PIPE_FORMAT_S8_UINT_Z24_UNORM:
return PIPE_FORMAT_S8X24_UINT;
case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT:
return PIPE_FORMAT_X32_S8X24_UINT;
/* stencil only formats */
case PIPE_FORMAT_X24S8_UINT:
case PIPE_FORMAT_S8X24_UINT:
case PIPE_FORMAT_X32_S8X24_UINT:
case PIPE_FORMAT_S8_UINT:
return format;
default:
assert(0);
return PIPE_FORMAT_NONE;
}
}
/**
* Converts PIPE_FORMAT_*I* to PIPE_FORMAT_*R*.
* This is identity for non-intensity formats.
*/
static inline enum pipe_format
util_format_intensity_to_red(enum pipe_format format)
{
switch (format) {
case PIPE_FORMAT_I8_UNORM:
return PIPE_FORMAT_R8_UNORM;
case PIPE_FORMAT_I8_SNORM:
return PIPE_FORMAT_R8_SNORM;
case PIPE_FORMAT_I16_UNORM:
return PIPE_FORMAT_R16_UNORM;
case PIPE_FORMAT_I16_SNORM:
return PIPE_FORMAT_R16_SNORM;
case PIPE_FORMAT_I16_FLOAT:
return PIPE_FORMAT_R16_FLOAT;
case PIPE_FORMAT_I32_FLOAT:
return PIPE_FORMAT_R32_FLOAT;
case PIPE_FORMAT_I8_UINT:
return PIPE_FORMAT_R8_UINT;
case PIPE_FORMAT_I8_SINT:
return PIPE_FORMAT_R8_SINT;
case PIPE_FORMAT_I16_UINT:
return PIPE_FORMAT_R16_UINT;
case PIPE_FORMAT_I16_SINT:
return PIPE_FORMAT_R16_SINT;
case PIPE_FORMAT_I32_UINT:
return PIPE_FORMAT_R32_UINT;
case PIPE_FORMAT_I32_SINT:
return PIPE_FORMAT_R32_SINT;
default:
assert(!util_format_is_intensity(format));
return format;
}
}
/**
* Converts PIPE_FORMAT_*L* to PIPE_FORMAT_*R*.
* This is identity for non-luminance formats.
*/
static inline enum pipe_format
util_format_luminance_to_red(enum pipe_format format)
{
switch (format) {
case PIPE_FORMAT_L8_UNORM:
return PIPE_FORMAT_R8_UNORM;
case PIPE_FORMAT_L8_SNORM:
return PIPE_FORMAT_R8_SNORM;
case PIPE_FORMAT_L16_UNORM:
return PIPE_FORMAT_R16_UNORM;
case PIPE_FORMAT_L16_SNORM:
return PIPE_FORMAT_R16_SNORM;
case PIPE_FORMAT_L16_FLOAT:
return PIPE_FORMAT_R16_FLOAT;
case PIPE_FORMAT_L32_FLOAT:
return PIPE_FORMAT_R32_FLOAT;
case PIPE_FORMAT_L8_UINT:
return PIPE_FORMAT_R8_UINT;
case PIPE_FORMAT_L8_SINT:
return PIPE_FORMAT_R8_SINT;
case PIPE_FORMAT_L16_UINT:
return PIPE_FORMAT_R16_UINT;
case PIPE_FORMAT_L16_SINT:
return PIPE_FORMAT_R16_SINT;
case PIPE_FORMAT_L32_UINT:
return PIPE_FORMAT_R32_UINT;
case PIPE_FORMAT_L32_SINT:
return PIPE_FORMAT_R32_SINT;
case PIPE_FORMAT_LATC1_UNORM:
return PIPE_FORMAT_RGTC1_UNORM;
case PIPE_FORMAT_LATC1_SNORM:
return PIPE_FORMAT_RGTC1_SNORM;
case PIPE_FORMAT_L4A4_UNORM:
return PIPE_FORMAT_R4A4_UNORM;
case PIPE_FORMAT_L8A8_UNORM:
return PIPE_FORMAT_R8A8_UNORM;
case PIPE_FORMAT_L8A8_SNORM:
return PIPE_FORMAT_R8A8_SNORM;
case PIPE_FORMAT_L16A16_UNORM:
return PIPE_FORMAT_R16A16_UNORM;
case PIPE_FORMAT_L16A16_SNORM:
return PIPE_FORMAT_R16A16_SNORM;
case PIPE_FORMAT_L16A16_FLOAT:
return PIPE_FORMAT_R16A16_FLOAT;
case PIPE_FORMAT_L32A32_FLOAT:
return PIPE_FORMAT_R32A32_FLOAT;
case PIPE_FORMAT_L8A8_UINT:
return PIPE_FORMAT_R8A8_UINT;
case PIPE_FORMAT_L8A8_SINT:
return PIPE_FORMAT_R8A8_SINT;
case PIPE_FORMAT_L16A16_UINT:
return PIPE_FORMAT_R16A16_UINT;
case PIPE_FORMAT_L16A16_SINT:
return PIPE_FORMAT_R16A16_SINT;
case PIPE_FORMAT_L32A32_UINT:
return PIPE_FORMAT_R32A32_UINT;
case PIPE_FORMAT_L32A32_SINT:
return PIPE_FORMAT_R32A32_SINT;
case PIPE_FORMAT_L8_SRGB:
return PIPE_FORMAT_R8_SRGB;
case PIPE_FORMAT_L8A8_SRGB:
return PIPE_FORMAT_R8G8_SRGB;
/* We don't have compressed red-alpha variants for these. */
case PIPE_FORMAT_LATC2_UNORM:
case PIPE_FORMAT_LATC2_SNORM:
return PIPE_FORMAT_NONE;
default:
assert(!util_format_is_luminance(format) &&
!util_format_is_luminance_alpha(format));
return format;
}
}
static inline unsigned
util_format_get_num_planes(enum pipe_format format)
{
switch (util_format_description(format)->layout) {
case UTIL_FORMAT_LAYOUT_PLANAR3:
return 3;
case UTIL_FORMAT_LAYOUT_PLANAR2:
return 2;
default:
return 1;
}
}
static inline enum pipe_format
util_format_get_plane_format(enum pipe_format format, unsigned plane)
{
switch (format) {
case PIPE_FORMAT_YV12:
case PIPE_FORMAT_YV16:
case PIPE_FORMAT_IYUV:
case PIPE_FORMAT_Y8_U8_V8_422_UNORM:
case PIPE_FORMAT_Y8_U8_V8_444_UNORM:
case PIPE_FORMAT_Y8_400_UNORM:
return PIPE_FORMAT_R8_UNORM;
case PIPE_FORMAT_NV12:
case PIPE_FORMAT_Y8_U8V8_422_UNORM:
return !plane ? PIPE_FORMAT_R8_UNORM : PIPE_FORMAT_RG88_UNORM;
case PIPE_FORMAT_NV21:
return !plane ? PIPE_FORMAT_R8_UNORM : PIPE_FORMAT_GR88_UNORM;
case PIPE_FORMAT_Y16_U16_V16_420_UNORM:
case PIPE_FORMAT_Y16_U16_V16_422_UNORM:
case PIPE_FORMAT_Y16_U16_V16_444_UNORM:
return PIPE_FORMAT_R16_UNORM;
case PIPE_FORMAT_P010:
case PIPE_FORMAT_P012:
case PIPE_FORMAT_P016:
case PIPE_FORMAT_Y16_U16V16_422_UNORM:
return !plane ? PIPE_FORMAT_R16_UNORM : PIPE_FORMAT_R16G16_UNORM;
default:
return format;
}
}
static inline unsigned
util_format_get_plane_width(enum pipe_format format, unsigned plane,
unsigned width)
{
switch (format) {
case PIPE_FORMAT_YV12:
case PIPE_FORMAT_YV16:
case PIPE_FORMAT_IYUV:
case PIPE_FORMAT_NV12:
case PIPE_FORMAT_NV21:
case PIPE_FORMAT_P010:
case PIPE_FORMAT_P012:
case PIPE_FORMAT_P016:
case PIPE_FORMAT_Y8_U8_V8_422_UNORM:
case PIPE_FORMAT_Y8_U8V8_422_UNORM:
case PIPE_FORMAT_Y16_U16_V16_420_UNORM:
case PIPE_FORMAT_Y16_U16_V16_422_UNORM:
case PIPE_FORMAT_Y16_U16V16_422_UNORM:
return !plane ? width : (width + 1) / 2;
default:
return width;
}
}
static inline unsigned
util_format_get_plane_height(enum pipe_format format, unsigned plane,
unsigned height)
{
switch (format) {
case PIPE_FORMAT_YV12:
case PIPE_FORMAT_IYUV:
case PIPE_FORMAT_NV12:
case PIPE_FORMAT_NV21:
case PIPE_FORMAT_P010:
case PIPE_FORMAT_P012:
case PIPE_FORMAT_P016:
case PIPE_FORMAT_Y16_U16_V16_420_UNORM:
return !plane ? height : (height + 1) / 2;
case PIPE_FORMAT_YV16:
default:
return height;
}
}
/**
* Return the number of components stored.
* Formats with block size != 1x1 will always have 1 component (the block).
*/
static inline unsigned
util_format_get_nr_components(enum pipe_format format)
{
const struct util_format_description *desc = util_format_description(format);
return desc->nr_channels;
}
/**
* Return the index of the first non-void channel
* -1 if no non-void channels
*/
static inline int
util_format_get_first_non_void_channel(enum pipe_format format)
{
const struct util_format_description *desc = util_format_description(format);
int i;
for (i = 0; i < 4; i++)
if (desc->channel[i].type != UTIL_FORMAT_TYPE_VOID)
break;
if (i == 4)
return -1;
return i;
}
/**
* Whether this format is any 8-bit UNORM variant. Looser than
* util_is_rgba8_variant (also includes alpha textures, for instance).
*/
static inline bool
util_format_is_unorm8(const struct util_format_description *desc)
{
int c = util_format_get_first_non_void_channel(desc->format);
if (c == -1)
return false;
return desc->is_unorm && desc->is_array && desc->channel[c].size == 8;
}
static inline void
util_format_unpack_z_float(enum pipe_format format, float *dst,
const void *src, unsigned w)
{
const struct util_format_unpack_description *desc =
util_format_unpack_description(format);
desc->unpack_z_float(dst, 0, (const uint8_t *)src, 0, w, 1);
}
static inline void
util_format_unpack_z_32unorm(enum pipe_format format, uint32_t *dst,
const void *src, unsigned w)
{
const struct util_format_unpack_description *desc =
util_format_unpack_description(format);
desc->unpack_z_32unorm(dst, 0, (const uint8_t *)src, 0, w, 1);
}
static inline void
util_format_unpack_s_8uint(enum pipe_format format, uint8_t *dst,
const void *src, unsigned w)
{
const struct util_format_unpack_description *desc =
util_format_unpack_description(format);
desc->unpack_s_8uint(dst, 0, (const uint8_t *)src, 0, w, 1);
}
/**
* Unpacks a row of color data to 32-bit RGBA, either integers for pure
* integer formats (sign-extended for signed data), or 32-bit floats.
*/
static inline void
util_format_unpack_rgba(enum pipe_format format, void *dst,
const void *src, unsigned w)
{
const struct util_format_unpack_description *desc =
util_format_unpack_description(format);
desc->unpack_rgba(dst, (const uint8_t *)src, w);
}
static inline void
util_format_pack_z_float(enum pipe_format format, void *dst,
const float *src, unsigned w)
{
const struct util_format_pack_description *desc =
util_format_pack_description(format);
desc->pack_z_float((uint8_t *)dst, 0, src, 0, w, 1);
}
static inline void
util_format_pack_z_32unorm(enum pipe_format format, void *dst,
const uint32_t *src, unsigned w)
{
const struct util_format_pack_description *desc =
util_format_pack_description(format);
desc->pack_z_32unorm((uint8_t *)dst, 0, src, 0, w, 1);
}
static inline void
util_format_pack_s_8uint(enum pipe_format format, void *dst,
const uint8_t *src, unsigned w)
{
const struct util_format_pack_description *desc =
util_format_pack_description(format);
desc->pack_s_8uint((uint8_t *)dst, 0, src, 0, w, 1);
}
/**
* Packs a row of color data from 32-bit RGBA, either integers for pure
* integer formats, or 32-bit floats. Values are clamped to the packed
* representation's range.
*/
static inline void
util_format_pack_rgba(enum pipe_format format, void *dst,
const void *src, unsigned w)
{
const struct util_format_pack_description *desc =
util_format_pack_description(format);
if (util_format_is_pure_uint(format))
desc->pack_rgba_uint((uint8_t *)dst, 0, (const uint32_t *)src, 0, w, 1);
else if (util_format_is_pure_sint(format))
desc->pack_rgba_sint((uint8_t *)dst, 0, (const int32_t *)src, 0, w, 1);
else
desc->pack_rgba_float((uint8_t *)dst, 0, (const float *)src, 0, w, 1);
}
/*
* Format access functions for subrectangles
*/
void
util_format_read_4(enum pipe_format format,
void *dst, unsigned dst_stride,
const void *src, unsigned src_stride,
unsigned x, unsigned y, unsigned w, unsigned h);
void
util_format_write_4(enum pipe_format format,
const void *src, unsigned src_stride,
void *dst, unsigned dst_stride,
unsigned x, unsigned y, unsigned w, unsigned h);
void
util_format_read_4ub(enum pipe_format format,
uint8_t *dst, unsigned dst_stride,
const void *src, unsigned src_stride,
unsigned x, unsigned y, unsigned w, unsigned h);
void
util_format_write_4ub(enum pipe_format format,
const uint8_t *src, unsigned src_stride,
void *dst, unsigned dst_stride,
unsigned x, unsigned y, unsigned w, unsigned h);
void
util_format_unpack_rgba_rect(enum pipe_format format,
void *dst, unsigned dst_stride,
const void *src, unsigned src_stride,
unsigned w, unsigned h);
void
util_format_unpack_rgba_8unorm_rect(enum pipe_format format,
void *dst, unsigned dst_stride,
const void *src, unsigned src_stride,
unsigned w, unsigned h);
/*
* Generic format conversion;
*/
boolean
util_format_fits_8unorm(const struct util_format_description *format_desc) ATTRIBUTE_CONST;
boolean
util_format_translate(enum pipe_format dst_format,
void *dst, unsigned dst_stride,
unsigned dst_x, unsigned dst_y,
enum pipe_format src_format,
const void *src, unsigned src_stride,
unsigned src_x, unsigned src_y,
unsigned width, unsigned height);
boolean
util_format_translate_3d(enum pipe_format dst_format,
void *dst, unsigned dst_stride,
unsigned dst_slice_stride,
unsigned dst_x, unsigned dst_y,
unsigned dst_z,
enum pipe_format src_format,
const void *src, unsigned src_stride,
unsigned src_slice_stride,
unsigned src_x, unsigned src_y,
unsigned src_z, unsigned width,
unsigned height, unsigned depth);
/*
* Swizzle operations.
*/
/* Compose two sets of swizzles.
* If V is a 4D vector and the function parameters represent functions that
* swizzle vector components, this holds:
* swz2(swz1(V)) = dst(V)
*/
void util_format_compose_swizzles(const unsigned char swz1[4],
const unsigned char swz2[4],
unsigned char dst[4]);
/* Apply the swizzle provided in \param swz (which is one of PIPE_SWIZZLE_x)
* to \param src and store the result in \param dst.
* \param is_integer determines the value written for PIPE_SWIZZLE_1.
*/
void util_format_apply_color_swizzle(union pipe_color_union *dst,
const union pipe_color_union *src,
const unsigned char swz[4],
const boolean is_integer);
void pipe_swizzle_4f(float *dst, const float *src,
const unsigned char swz[4]);
void util_format_unswizzle_4f(float *dst, const float *src,
const unsigned char swz[4]);
enum pipe_format
util_format_snorm_to_sint(enum pipe_format format) ATTRIBUTE_CONST;
extern void
util_copy_rect(ubyte * dst, enum pipe_format format,
unsigned dst_stride, unsigned dst_x, unsigned dst_y,
unsigned width, unsigned height, const ubyte * src,
int src_stride, unsigned src_x, unsigned src_y);
/**
* If the format is RGB, return BGR. If the format is BGR, return RGB.
* This may fail by returning PIPE_FORMAT_NONE.
*/
enum pipe_format
util_format_rgb_to_bgr(enum pipe_format format);
/* Returns the pipe format with SNORM formats cast to UNORM, otherwise the original pipe format. */
enum pipe_format
util_format_snorm_to_unorm(enum pipe_format format);
enum pipe_format
util_format_rgbx_to_rgba(enum pipe_format format);
#ifdef __cplusplus
} // extern "C" {
#endif
#endif /* ! U_FORMAT_H */