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fuchsia / third_party / mesa / 2cbf6ace6fb6b7c4b8ce2b886e8f58cd0107ce45 / . / src / util / format / u_format.c
blob: d4873a5fd59dd5afc060a0e700d5e1bdd93078a3 [file] [log] [blame]
/**************************************************************************
*
* Copyright 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.
*
**************************************************************************/
/**
* @file
* Pixel format accessor functions.
*
* @author Jose Fonseca <jfonseca@vmware.com>
*/
#include "c11/threads.h"
#include "util/format/u_format.h"
#include "util/format/u_format_s3tc.h"
#include "util/u_math.h"
#include "pipe/p_defines.h"
#include "pipe/p_screen.h"
/**
* Copy 2D rect from one place to another.
* Position and sizes are in pixels.
* src_stride may be negative to do vertical flip of pixels from source.
*/
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)
{
unsigned i;
int src_stride_pos = src_stride < 0 ? -src_stride : src_stride;
int blocksize = util_format_get_blocksize(format);
int blockwidth = util_format_get_blockwidth(format);
int blockheight = util_format_get_blockheight(format);
assert(blocksize > 0);
assert(blockwidth > 0);
assert(blockheight > 0);
dst_x /= blockwidth;
dst_y /= blockheight;
width = (width + blockwidth - 1)/blockwidth;
height = (height + blockheight - 1)/blockheight;
src_x /= blockwidth;
src_y /= blockheight;
dst += dst_x * blocksize;
src += src_x * blocksize;
dst += dst_y * dst_stride;
src += src_y * src_stride_pos;
width *= blocksize;
if (width == dst_stride && width == (unsigned)src_stride)
memcpy(dst, src, height * width);
else {
for (i = 0; i < height; i++) {
memcpy(dst, src, width);
dst += dst_stride;
src += src_stride;
}
}
}
boolean
util_format_is_float(enum pipe_format format)
{
const struct util_format_description *desc = util_format_description(format);
int i;
i = util_format_get_first_non_void_channel(format);
if (i < 0) {
return FALSE;
}
return desc->channel[i].type == UTIL_FORMAT_TYPE_FLOAT ? TRUE : FALSE;
}
/** Test if the format contains RGB, but not alpha */
boolean
util_format_has_alpha(enum pipe_format format)
{
const struct util_format_description *desc =
util_format_description(format);
return (desc->colorspace == UTIL_FORMAT_COLORSPACE_RGB ||
desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB) &&
desc->swizzle[3] != PIPE_SWIZZLE_1;
}
/** Test if format has alpha as 1 (like RGBX) */
boolean
util_format_has_alpha1(enum pipe_format format)
{
const struct util_format_description *desc =
util_format_description(format);
return (desc->colorspace == UTIL_FORMAT_COLORSPACE_RGB ||
desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB) &&
desc->nr_channels == 4 &&
desc->swizzle[3] == PIPE_SWIZZLE_1;
}
boolean
util_format_is_luminance(enum pipe_format format)
{
const struct util_format_description *desc =
util_format_description(format);
if ((desc->colorspace == UTIL_FORMAT_COLORSPACE_RGB ||
desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB) &&
desc->swizzle[0] == PIPE_SWIZZLE_X &&
desc->swizzle[1] == PIPE_SWIZZLE_X &&
desc->swizzle[2] == PIPE_SWIZZLE_X &&
desc->swizzle[3] == PIPE_SWIZZLE_1) {
return TRUE;
}
return FALSE;
}
boolean
util_format_is_alpha(enum pipe_format format)
{
const struct util_format_description *desc =
util_format_description(format);
if ((desc->colorspace == UTIL_FORMAT_COLORSPACE_RGB ||
desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB) &&
desc->swizzle[0] == PIPE_SWIZZLE_0 &&
desc->swizzle[1] == PIPE_SWIZZLE_0 &&
desc->swizzle[2] == PIPE_SWIZZLE_0 &&
desc->swizzle[3] == PIPE_SWIZZLE_X) {
return TRUE;
}
return FALSE;
}
boolean
util_format_is_pure_integer(enum pipe_format format)
{
const struct util_format_description *desc = util_format_description(format);
int i;
if (desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS) {
if (util_format_has_depth(desc))
return false;
assert(util_format_has_stencil(desc));
return true;
}
/* Find the first non-void channel. */
i = util_format_get_first_non_void_channel(format);
if (i == -1)
return FALSE;
return desc->channel[i].pure_integer ? TRUE : FALSE;
}
boolean
util_format_is_pure_sint(enum pipe_format format)
{
const struct util_format_description *desc = util_format_description(format);
int i;
i = util_format_get_first_non_void_channel(format);
if (i == -1)
return FALSE;
return (desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED && desc->channel[i].pure_integer) ? TRUE : FALSE;
}
boolean
util_format_is_pure_uint(enum pipe_format format)
{
const struct util_format_description *desc = util_format_description(format);
int i;
i = util_format_get_first_non_void_channel(format);
if (i == -1)
return FALSE;
return (desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED && desc->channel[i].pure_integer) ? TRUE : FALSE;
}
/**
* Returns true if the format contains normalized signed channels.
*/
boolean
util_format_is_snorm(enum pipe_format format)
{
const struct util_format_description *desc = util_format_description(format);
return desc->is_snorm;
}
/**
* Returns true if the format contains normalized unsigned channels.
*/
boolean
util_format_is_unorm(enum pipe_format format)
{
const struct util_format_description *desc = util_format_description(format);
return desc->is_unorm;
}
/**
* Returns true if the format contains scaled integer format channels.
*/
boolean
util_format_is_scaled(enum pipe_format format)
{
const struct util_format_description *desc = util_format_description(format);
int i;
/* format none is described as scaled but not for this check */
if (format == PIPE_FORMAT_NONE)
return FALSE;
/* Find the first non-void channel. */
i = util_format_get_first_non_void_channel(format);
if (i == -1)
return FALSE;
return !desc->channel[i].pure_integer && !desc->channel[i].normalized &&
(desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED ||
desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED);
}
boolean
util_format_is_snorm8(enum pipe_format format)
{
const struct util_format_description *desc = util_format_description(format);
int i;
if (desc->is_mixed)
return FALSE;
i = util_format_get_first_non_void_channel(format);
if (i == -1)
return FALSE;
return desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED &&
!desc->channel[i].pure_integer &&
desc->channel[i].normalized &&
desc->channel[i].size == 8;
}
boolean
util_format_is_luminance_alpha(enum pipe_format format)
{
const struct util_format_description *desc =
util_format_description(format);
if ((desc->colorspace == UTIL_FORMAT_COLORSPACE_RGB ||
desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB) &&
desc->swizzle[0] == PIPE_SWIZZLE_X &&
desc->swizzle[1] == PIPE_SWIZZLE_X &&
desc->swizzle[2] == PIPE_SWIZZLE_X &&
desc->swizzle[3] == PIPE_SWIZZLE_Y) {
return TRUE;
}
return FALSE;
}
boolean
util_format_is_intensity(enum pipe_format format)
{
const struct util_format_description *desc =
util_format_description(format);
if ((desc->colorspace == UTIL_FORMAT_COLORSPACE_RGB ||
desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB) &&
desc->swizzle[0] == PIPE_SWIZZLE_X &&
desc->swizzle[1] == PIPE_SWIZZLE_X &&
desc->swizzle[2] == PIPE_SWIZZLE_X &&
desc->swizzle[3] == PIPE_SWIZZLE_X) {
return TRUE;
}
return FALSE;
}
boolean
util_format_is_subsampled_422(enum pipe_format format)
{
const struct util_format_description *desc =
util_format_description(format);
return desc->layout == UTIL_FORMAT_LAYOUT_SUBSAMPLED &&
desc->block.width == 2 &&
desc->block.height == 1 &&
desc->block.bits == 32;
}
/**
* 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)
{
/*
* Depth buffer formats without a depth component OR scenarios
* without a bound depth buffer default to D24.
*/
double mrd = 1.0 / ((1 << 24) - 1);
unsigned depth_channel;
/*
* Some depth formats do not store the depth component in the first
* channel, detect the format and adjust the depth channel. Get the
* swizzled depth component channel.
*/
depth_channel = desc->swizzle[0];
if (desc->channel[depth_channel].type == UTIL_FORMAT_TYPE_UNSIGNED &&
desc->channel[depth_channel].normalized) {
int depth_bits;
depth_bits = desc->channel[depth_channel].size;
mrd = 1.0 / ((1ULL << depth_bits) - 1);
}
return mrd;
}
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)
{
const struct util_format_unpack_description *unpack =
util_format_unpack_description(format);
/* Optimized function for block-compressed formats */
if (unpack->unpack_rgba_rect) {
unpack->unpack_rgba_rect(dst, dst_stride, src, src_stride, w, h);
} else {
for (unsigned y = 0; y < h; y++) {
unpack->unpack_rgba(dst, src, w);
src = (const char *)src + src_stride;
dst = (char *)dst + dst_stride;
}
}
}
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)
{
const struct util_format_unpack_description *unpack =
util_format_unpack_description(format);
/* Optimized function for block-compressed formats */
if (unpack->unpack_rgba_8unorm_rect) {
unpack->unpack_rgba_8unorm_rect(dst, dst_stride, src, src_stride, w, h);
} else {
for (unsigned y = 0; y < h; y++) {
unpack->unpack_rgba_8unorm(dst, src, w);
src = (const char *)src + src_stride;
dst = (char *)dst + dst_stride;
}
}
}
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)
{
const struct util_format_description *format_desc;
const uint8_t *src_row;
format_desc = util_format_description(format);
assert(x % format_desc->block.width == 0);
assert(y % format_desc->block.height == 0);
src_row = (const uint8_t *)src + y*src_stride + x*(format_desc->block.bits/8);
util_format_unpack_rgba_rect(format, dst, dst_stride, src_row, src_stride, w, 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)
{
const struct util_format_description *format_desc;
const struct util_format_pack_description *pack =
util_format_pack_description(format);
uint8_t *dst_row;
format_desc = util_format_description(format);
assert(x % format_desc->block.width == 0);
assert(y % format_desc->block.height == 0);
dst_row = (uint8_t *)dst + y*dst_stride + x*(format_desc->block.bits/8);
if (util_format_is_pure_uint(format))
pack->pack_rgba_uint(dst_row, dst_stride, src, src_stride, w, h);
else if (util_format_is_pure_sint(format))
pack->pack_rgba_sint(dst_row, dst_stride, src, src_stride, w, h);
else
pack->pack_rgba_float(dst_row, dst_stride, src, src_stride, w, 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)
{
const struct util_format_description *format_desc;
const uint8_t *src_row;
format_desc = util_format_description(format);
assert(x % format_desc->block.width == 0);
assert(y % format_desc->block.height == 0);
src_row = (const uint8_t *)src + y*src_stride + x*(format_desc->block.bits/8);
util_format_unpack_rgba_8unorm_rect(format, dst, dst_stride, src_row, src_stride, w, 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)
{
const struct util_format_description *format_desc;
const struct util_format_pack_description *pack =
util_format_pack_description(format);
uint8_t *dst_row;
const uint8_t *src_row;
format_desc = util_format_description(format);
assert(x % format_desc->block.width == 0);
assert(y % format_desc->block.height == 0);
dst_row = (uint8_t *)dst + y*dst_stride + x*(format_desc->block.bits/8);
src_row = src;
pack->pack_rgba_8unorm(dst_row, dst_stride, src_row, src_stride, w, h);
}
/**
* Check if we can safely memcopy from the source format to the dest format.
* This basically covers the cases of a "used" channel copied to a typeless
* channel, plus some 1-channel cases.
* Examples of compatible copy formats include:
* b8g8r8a8_unorm -> b8g8r8x8_unorm
* a8r8g8b8_unorm -> x8r8g8b8_unorm
* b5g5r5a1_unorm -> b5g5r5x1_unorm
* b4g4r4a4_unorm -> b4g4r4x4_unorm
* l8_unorm -> r8_unorm
* i8_unorm -> l8_unorm
* i8_unorm -> a8_unorm
* i8_unorm -> r8_unorm
* l16_unorm -> r16_unorm
* z24_unorm_s8_uint -> z24x8_unorm
* s8_uint_z24_unorm -> x8z24_unorm
* r8g8b8a8_unorm -> r8g8b8x8_unorm
* a8b8g8r8_srgb -> x8b8g8r8_srgb
* b8g8r8a8_srgb -> b8g8r8x8_srgb
* a8r8g8b8_srgb -> x8r8g8b8_srgb
* a8b8g8r8_unorm -> x8b8g8r8_unorm
* r10g10b10a2_uscaled -> r10g10b10x2_uscaled
* r10sg10sb10sa2u_norm -> r10g10b10x2_snorm
*/
boolean
util_is_format_compatible(const struct util_format_description *src_desc,
const struct util_format_description *dst_desc)
{
unsigned chan;
if (src_desc->format == dst_desc->format) {
return TRUE;
}
if (src_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN ||
dst_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN) {
return FALSE;
}
if (src_desc->block.bits != dst_desc->block.bits ||
src_desc->nr_channels != dst_desc->nr_channels ||
src_desc->colorspace != dst_desc->colorspace) {
return FALSE;
}
for (chan = 0; chan < 4; ++chan) {
if (src_desc->channel[chan].size !=
dst_desc->channel[chan].size) {
return FALSE;
}
}
for (chan = 0; chan < 4; ++chan) {
enum pipe_swizzle swizzle = dst_desc->swizzle[chan];
if (swizzle < 4) {
if (src_desc->swizzle[chan] != swizzle) {
return FALSE;
}
if ((src_desc->channel[swizzle].type !=
dst_desc->channel[swizzle].type) ||
(src_desc->channel[swizzle].normalized !=
dst_desc->channel[swizzle].normalized)) {
return FALSE;
}
}
}
return TRUE;
}
boolean
util_format_fits_8unorm(const struct util_format_description *format_desc)
{
unsigned chan;
/*
* After linearized sRGB values require more than 8bits.
*/
if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB) {
return FALSE;
}
switch (format_desc->layout) {
case UTIL_FORMAT_LAYOUT_S3TC:
/*
* These are straight forward.
*/
return TRUE;
case UTIL_FORMAT_LAYOUT_RGTC:
if (format_desc->format == PIPE_FORMAT_RGTC1_SNORM ||
format_desc->format == PIPE_FORMAT_RGTC2_SNORM ||
format_desc->format == PIPE_FORMAT_LATC1_SNORM ||
format_desc->format == PIPE_FORMAT_LATC2_SNORM)
return FALSE;
return TRUE;
case UTIL_FORMAT_LAYOUT_BPTC:
if (format_desc->format == PIPE_FORMAT_BPTC_RGBA_UNORM)
return TRUE;
return FALSE;
case UTIL_FORMAT_LAYOUT_ETC:
if (format_desc->format == PIPE_FORMAT_ETC1_RGB8)
return TRUE;
return FALSE;
case UTIL_FORMAT_LAYOUT_PLAIN:
/*
* For these we can find a generic rule.
*/
for (chan = 0; chan < format_desc->nr_channels; ++chan) {
switch (format_desc->channel[chan].type) {
case UTIL_FORMAT_TYPE_VOID:
break;
case UTIL_FORMAT_TYPE_UNSIGNED:
if (!format_desc->channel[chan].normalized ||
format_desc->channel[chan].size > 8) {
return FALSE;
}
break;
default:
return FALSE;
}
}
return TRUE;
default:
/*
* Handle all others on a case by case basis.
*/
switch (format_desc->format) {
case PIPE_FORMAT_R1_UNORM:
case PIPE_FORMAT_UYVY:
case PIPE_FORMAT_YUYV:
case PIPE_FORMAT_R8G8_B8G8_UNORM:
case PIPE_FORMAT_G8R8_G8B8_UNORM:
return TRUE;
default:
return FALSE;
}
}
}
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)
{
const struct util_format_description *dst_format_desc;
const struct util_format_description *src_format_desc;
const struct util_format_pack_description *pack =
util_format_pack_description(dst_format);
const struct util_format_unpack_description *unpack =
util_format_unpack_description(src_format);
uint8_t *dst_row;
const uint8_t *src_row;
unsigned x_step, y_step;
unsigned dst_step;
unsigned src_step;
dst_format_desc = util_format_description(dst_format);
src_format_desc = util_format_description(src_format);
if (util_is_format_compatible(src_format_desc, dst_format_desc)) {
/*
* Trivial case.
*/
util_copy_rect(dst, dst_format, dst_stride, dst_x, dst_y,
width, height, src, (int)src_stride,
src_x, src_y);
return TRUE;
}
assert(dst_x % dst_format_desc->block.width == 0);
assert(dst_y % dst_format_desc->block.height == 0);
assert(src_x % src_format_desc->block.width == 0);
assert(src_y % src_format_desc->block.height == 0);
dst_row = (uint8_t *)dst + dst_y*dst_stride + dst_x*(dst_format_desc->block.bits/8);
src_row = (const uint8_t *)src + src_y*src_stride + src_x*(src_format_desc->block.bits/8);
/*
* This works because all pixel formats have pixel blocks with power of two
* sizes.
*/
y_step = MAX2(dst_format_desc->block.height, src_format_desc->block.height);
x_step = MAX2(dst_format_desc->block.width, src_format_desc->block.width);
assert(y_step % dst_format_desc->block.height == 0);
assert(y_step % src_format_desc->block.height == 0);
dst_step = y_step / dst_format_desc->block.height * dst_stride;
src_step = y_step / src_format_desc->block.height * src_stride;
/*
* TODO: double formats will loose precision
* TODO: Add a special case for formats that are mere swizzles of each other
*/
if (src_format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS ||
dst_format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS) {
float *tmp_z = NULL;
uint8_t *tmp_s = NULL;
assert(x_step == 1);
assert(y_step == 1);
if (unpack->unpack_z_float && pack->pack_z_float) {
tmp_z = malloc(width * sizeof *tmp_z);
}
if (unpack->unpack_s_8uint && pack->pack_s_8uint) {
tmp_s = malloc(width * sizeof *tmp_s);
}
while (height--) {
if (tmp_z) {
util_format_unpack_z_float(src_format, tmp_z, src_row, width);
util_format_pack_z_float(dst_format, dst_row, tmp_z, width);
}
if (tmp_s) {
util_format_unpack_s_8uint(src_format, tmp_s, src_row, width);
util_format_pack_s_8uint(dst_format, dst_row, tmp_s, width);
}
dst_row += dst_step;
src_row += src_step;
}
free(tmp_s);
free(tmp_z);
return TRUE;
}
if (util_format_fits_8unorm(src_format_desc) ||
util_format_fits_8unorm(dst_format_desc)) {
unsigned tmp_stride;
uint8_t *tmp_row;
if ((!unpack->unpack_rgba_8unorm && !unpack->unpack_rgba_8unorm_rect) ||
!pack->pack_rgba_8unorm) {
return FALSE;
}
tmp_stride = MAX2(width, x_step) * 4 * sizeof *tmp_row;
tmp_row = malloc(y_step * tmp_stride);
if (!tmp_row)
return FALSE;
while (height >= y_step) {
util_format_unpack_rgba_8unorm_rect(src_format, tmp_row, tmp_stride, src_row, src_stride, width, y_step);
pack->pack_rgba_8unorm(dst_row, dst_stride, tmp_row, tmp_stride, width, y_step);
dst_row += dst_step;
src_row += src_step;
height -= y_step;
}
if (height) {
util_format_unpack_rgba_8unorm_rect(src_format, tmp_row, tmp_stride, src_row, src_stride, width, height);
pack->pack_rgba_8unorm(dst_row, dst_stride, tmp_row, tmp_stride, width, height);
}
free(tmp_row);
}
else if (util_format_is_pure_sint(src_format) ||
util_format_is_pure_sint(dst_format)) {
unsigned tmp_stride;
int *tmp_row;
if (util_format_is_pure_sint(src_format) !=
util_format_is_pure_sint(dst_format)) {
return FALSE;
}
tmp_stride = MAX2(width, x_step) * 4 * sizeof *tmp_row;
tmp_row = malloc(y_step * tmp_stride);
if (!tmp_row)
return FALSE;
while (height >= y_step) {
util_format_unpack_rgba_rect(src_format, tmp_row, tmp_stride, src_row, src_stride, width, y_step);
pack->pack_rgba_sint(dst_row, dst_stride, tmp_row, tmp_stride, width, y_step);
dst_row += dst_step;
src_row += src_step;
height -= y_step;
}
if (height) {
util_format_unpack_rgba_rect(src_format, tmp_row, tmp_stride, src_row, src_stride, width, height);
pack->pack_rgba_sint(dst_row, dst_stride, tmp_row, tmp_stride, width, height);
}
free(tmp_row);
}
else if (util_format_is_pure_uint(src_format) ||
util_format_is_pure_uint(dst_format)) {
unsigned tmp_stride;
unsigned int *tmp_row;
if ((!unpack->unpack_rgba && !unpack->unpack_rgba_rect) ||
!pack->pack_rgba_uint) {
return FALSE;
}
tmp_stride = MAX2(width, x_step) * 4 * sizeof *tmp_row;
tmp_row = malloc(y_step * tmp_stride);
if (!tmp_row)
return FALSE;
while (height >= y_step) {
util_format_unpack_rgba_rect(src_format, tmp_row, tmp_stride, src_row, src_stride, width, y_step);
pack->pack_rgba_uint(dst_row, dst_stride, tmp_row, tmp_stride, width, y_step);
dst_row += dst_step;
src_row += src_step;
height -= y_step;
}
if (height) {
util_format_unpack_rgba_rect(src_format, tmp_row, tmp_stride, src_row, src_stride, width, height);
pack->pack_rgba_uint(dst_row, dst_stride, tmp_row, tmp_stride, width, height);
}
free(tmp_row);
}
else {
unsigned tmp_stride;
float *tmp_row;
if ((!unpack->unpack_rgba && !unpack->unpack_rgba_rect) ||
!pack->pack_rgba_float) {
return FALSE;
}
tmp_stride = MAX2(width, x_step) * 4 * sizeof *tmp_row;
tmp_row = malloc(y_step * tmp_stride);
if (!tmp_row)
return FALSE;
while (height >= y_step) {
util_format_unpack_rgba_rect(src_format, tmp_row, tmp_stride, src_row, src_stride, width, y_step);
pack->pack_rgba_float(dst_row, dst_stride, tmp_row, tmp_stride, width, y_step);
dst_row += dst_step;
src_row += src_step;
height -= y_step;
}
if (height) {
util_format_unpack_rgba_rect(src_format, tmp_row, tmp_stride, src_row, src_stride, width, height);
pack->pack_rgba_float(dst_row, dst_stride, tmp_row, tmp_stride, width, height);
}
free(tmp_row);
}
return TRUE;
}
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)
{
uint8_t *dst_layer;
const uint8_t *src_layer;
unsigned z;
dst_layer = dst;
src_layer = src;
dst_layer += dst_z * dst_slice_stride;
src_layer += src_z * src_slice_stride;
for (z = 0; z < depth; ++z) {
if (!util_format_translate(dst_format, dst_layer, dst_stride,
dst_x, dst_y,
src_format, src_layer, src_stride,
src_x, src_y,
width, height))
return FALSE;
dst_layer += dst_slice_stride;
src_layer += src_slice_stride;
}
return TRUE;
}
void util_format_compose_swizzles(const unsigned char swz1[4],
const unsigned char swz2[4],
unsigned char dst[4])
{
unsigned i;
for (i = 0; i < 4; i++) {
dst[i] = swz2[i] <= PIPE_SWIZZLE_W ?
swz1[swz2[i]] : swz2[i];
}
}
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)
{
unsigned c;
if (is_integer) {
for (c = 0; c < 4; ++c) {
switch (swz[c]) {
case PIPE_SWIZZLE_X: dst->ui[c] = src->ui[0]; break;
case PIPE_SWIZZLE_Y: dst->ui[c] = src->ui[1]; break;
case PIPE_SWIZZLE_Z: dst->ui[c] = src->ui[2]; break;
case PIPE_SWIZZLE_W: dst->ui[c] = src->ui[3]; break;
default:
dst->ui[c] = (swz[c] == PIPE_SWIZZLE_1) ? 1 : 0;
break;
}
}
} else {
for (c = 0; c < 4; ++c) {
switch (swz[c]) {
case PIPE_SWIZZLE_X: dst->f[c] = src->f[0]; break;
case PIPE_SWIZZLE_Y: dst->f[c] = src->f[1]; break;
case PIPE_SWIZZLE_Z: dst->f[c] = src->f[2]; break;
case PIPE_SWIZZLE_W: dst->f[c] = src->f[3]; break;
default:
dst->f[c] = (swz[c] == PIPE_SWIZZLE_1) ? 1.0f : 0.0f;
break;
}
}
}
}
void pipe_swizzle_4f(float *dst, const float *src,
const unsigned char swz[4])
{
unsigned i;
for (i = 0; i < 4; i++) {
if (swz[i] <= PIPE_SWIZZLE_W)
dst[i] = src[swz[i]];
else if (swz[i] == PIPE_SWIZZLE_0)
dst[i] = 0;
else if (swz[i] == PIPE_SWIZZLE_1)
dst[i] = 1;
}
}
void util_format_unswizzle_4f(float *dst, const float *src,
const unsigned char swz[4])
{
unsigned i;
for (i = 0; i < 4; i++) {
switch (swz[i]) {
case PIPE_SWIZZLE_X:
dst[0] = src[i];
break;
case PIPE_SWIZZLE_Y:
dst[1] = src[i];
break;
case PIPE_SWIZZLE_Z:
dst[2] = src[i];
break;
case PIPE_SWIZZLE_W:
dst[3] = src[i];
break;
}
}
}
enum pipe_format
util_format_snorm_to_sint(enum pipe_format format)
{
switch (format) {
case PIPE_FORMAT_R32_SNORM:
return PIPE_FORMAT_R32_SINT;
case PIPE_FORMAT_R32G32_SNORM:
return PIPE_FORMAT_R32G32_SINT;
case PIPE_FORMAT_R32G32B32_SNORM:
return PIPE_FORMAT_R32G32B32_SINT;
case PIPE_FORMAT_R32G32B32A32_SNORM:
return PIPE_FORMAT_R32G32B32A32_SINT;
case PIPE_FORMAT_R16_SNORM:
return PIPE_FORMAT_R16_SINT;
case PIPE_FORMAT_R16G16_SNORM:
return PIPE_FORMAT_R16G16_SINT;
case PIPE_FORMAT_R16G16B16_SNORM:
return PIPE_FORMAT_R16G16B16_SINT;
case PIPE_FORMAT_R16G16B16A16_SNORM:
return PIPE_FORMAT_R16G16B16A16_SINT;
case PIPE_FORMAT_R8_SNORM:
return PIPE_FORMAT_R8_SINT;
case PIPE_FORMAT_R8G8_SNORM:
return PIPE_FORMAT_R8G8_SINT;
case PIPE_FORMAT_R8G8B8_SNORM:
return PIPE_FORMAT_R8G8B8_SINT;
case PIPE_FORMAT_B8G8R8_SNORM:
return PIPE_FORMAT_B8G8R8_SINT;
case PIPE_FORMAT_R8G8B8A8_SNORM:
return PIPE_FORMAT_R8G8B8A8_SINT;
case PIPE_FORMAT_B8G8R8A8_SNORM:
return PIPE_FORMAT_B8G8R8A8_SINT;
case PIPE_FORMAT_R10G10B10A2_SNORM:
return PIPE_FORMAT_R10G10B10A2_SINT;
case PIPE_FORMAT_B10G10R10A2_SNORM:
return PIPE_FORMAT_B10G10R10A2_SINT;
case PIPE_FORMAT_R10G10B10X2_SNORM:
return PIPE_FORMAT_R10G10B10X2_SINT;
case PIPE_FORMAT_A8_SNORM:
return PIPE_FORMAT_A8_SINT;
case PIPE_FORMAT_L8_SNORM:
return PIPE_FORMAT_L8_SINT;
case PIPE_FORMAT_L8A8_SNORM:
return PIPE_FORMAT_L8A8_SINT;
case PIPE_FORMAT_I8_SNORM:
return PIPE_FORMAT_I8_SINT;
case PIPE_FORMAT_A16_SNORM:
return PIPE_FORMAT_A16_SINT;
case PIPE_FORMAT_L16_SNORM:
return PIPE_FORMAT_L16_SINT;
case PIPE_FORMAT_L16A16_SNORM:
return PIPE_FORMAT_L16A16_SINT;
case PIPE_FORMAT_I16_SNORM:
return PIPE_FORMAT_I16_SINT;
case PIPE_FORMAT_R8G8B8X8_SNORM:
return PIPE_FORMAT_R8G8B8X8_SINT;
case PIPE_FORMAT_R16G16B16X16_SNORM:
return PIPE_FORMAT_R16G16B16X16_SINT;
case PIPE_FORMAT_R8A8_SNORM:
return PIPE_FORMAT_R8A8_SINT;
case PIPE_FORMAT_R16A16_SNORM:
return PIPE_FORMAT_R16A16_SINT;
case PIPE_FORMAT_G8R8_SNORM:
return PIPE_FORMAT_G8R8_SINT;
case PIPE_FORMAT_G16R16_SNORM:
return PIPE_FORMAT_G16R16_SINT;
case PIPE_FORMAT_A8B8G8R8_SNORM:
return PIPE_FORMAT_A8B8G8R8_SINT;
case PIPE_FORMAT_X8B8G8R8_SNORM:
return PIPE_FORMAT_X8B8G8R8_SINT;
case PIPE_FORMAT_B8G8R8X8_SNORM:
return PIPE_FORMAT_B8G8R8X8_SINT;
case PIPE_FORMAT_A8R8G8B8_SNORM:
return PIPE_FORMAT_A8R8G8B8_SINT;
case PIPE_FORMAT_X8R8G8B8_SNORM:
return PIPE_FORMAT_X8R8G8B8_SINT;
case PIPE_FORMAT_B10G10R10X2_SNORM:
return PIPE_FORMAT_B10G10R10X2_SINT;
default:
return format;
}
}
/**
* 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)
{
#define REMAP_RGB_ONE(r, rs, g, gs, b, bs, type) \
case PIPE_FORMAT_##r##rs##g##gs##b##bs##_##type: \
return PIPE_FORMAT_##b##bs##g##gs##r##rs##_##type;
#define REMAP_RGB(rs, gs, bs, type) \
REMAP_RGB_ONE(R, rs, G, gs, B, bs, type) \
REMAP_RGB_ONE(B, bs, G, gs, R, rs, type) \
#define REMAP_RGBA_ONE(r, rs, g, gs, b, bs, a, as, type) \
case PIPE_FORMAT_##r##rs##g##gs##b##bs##a##as##_##type: \
return PIPE_FORMAT_##b##bs##g##gs##r##rs##a##as##_##type;
#define REMAP_ARGB_ONE(a, as, r, rs, g, gs, b, bs, type) \
case PIPE_FORMAT_##a##as##r##rs##g##gs##b##bs##_##type: \
return PIPE_FORMAT_##a##as##b##bs##g##gs##r##rs##_##type;
#define REMAP_RGB_AX(A, rs, gs, bs, as, type) \
REMAP_RGBA_ONE(R, rs, G, gs, B, bs, A, as, type) \
REMAP_RGBA_ONE(B, bs, G, gs, R, rs, A, as, type) \
#define REMAP_AX_RGB(A, rs, gs, bs, as, type) \
REMAP_ARGB_ONE(A, as, R, rs, G, gs, B, bs, type) \
REMAP_ARGB_ONE(A, as, B, bs, G, gs, R, rs, type) \
#define REMAP_RGBA(rs, gs, bs, as, type) REMAP_RGB_AX(A, rs, gs, bs, as, type)
#define REMAP_RGBX(rs, gs, bs, as, type) REMAP_RGB_AX(X, rs, gs, bs, as, type)
#define REMAP_ARGB(rs, gs, bs, as, type) REMAP_AX_RGB(A, rs, gs, bs, as, type)
#define REMAP_XRGB(rs, gs, bs, as, type) REMAP_AX_RGB(X, rs, gs, bs, as, type)
#define REMAP_RGBA_ALL(rs, gs, bs, as, type) \
REMAP_RGBA(rs, gs, bs, as, type) \
REMAP_RGBX(rs, gs, bs, as, type) \
REMAP_ARGB(rs, gs, bs, as, type) \
REMAP_XRGB(rs, gs, bs, as, type)
switch (format) {
REMAP_RGB(3, 3, 2, UNORM);
REMAP_RGB(3, 3, 2, UINT);
REMAP_RGB(5, 6, 5, SRGB);
REMAP_RGB(5, 6, 5, UNORM);
REMAP_RGB(5, 6, 5, UINT);
REMAP_RGB(8, 8, 8, SRGB);
REMAP_RGB(8, 8, 8, UNORM);
REMAP_RGB(8, 8, 8, SNORM);
REMAP_RGB(8, 8, 8, UINT);
REMAP_RGB(8, 8, 8, SINT);
REMAP_RGB(8, 8, 8, USCALED);
REMAP_RGB(8, 8, 8, SSCALED);
/* Complete format sets. */
REMAP_RGBA_ALL(5, 5, 5, 1, UNORM);
REMAP_RGBA_ALL(8, 8, 8, 8, SRGB);
REMAP_RGBA_ALL(8, 8, 8, 8, UNORM);
REMAP_RGBA_ALL(8, 8, 8, 8, SNORM);
REMAP_RGBA_ALL(8, 8, 8, 8, SINT);
/* Format sets missing XRGB/XBGR. */
REMAP_RGBA(4, 4, 4, 4, UNORM);
REMAP_RGBX(4, 4, 4, 4, UNORM);
REMAP_ARGB(4, 4, 4, 4, UNORM);
REMAP_RGBA(8, 8, 8, 8, UINT);
REMAP_RGBX(8, 8, 8, 8, UINT);
REMAP_ARGB(8, 8, 8, 8, UINT);
REMAP_RGBA(10, 10, 10, 2, UNORM);
REMAP_RGBX(10, 10, 10, 2, UNORM);
REMAP_ARGB(10, 10, 10, 2, UNORM);
/* Format sets missing a half of combinations. */
REMAP_RGBA(4, 4, 4, 4, UINT);
REMAP_ARGB(4, 4, 4, 4, UINT);
REMAP_RGBA(5, 5, 5, 1, UINT);
REMAP_ARGB(5, 5, 5, 1, UINT);
REMAP_RGBA(10, 10, 10, 2, SNORM);
REMAP_RGBX(10, 10, 10, 2, SNORM);
REMAP_RGBA(10, 10, 10, 2, UINT);
REMAP_ARGB(10, 10, 10, 2, UINT);
REMAP_RGBA(10, 10, 10, 2, SINT);
REMAP_RGBX(10, 10, 10, 2, SINT);
/* Format sets having only RGBA/BGRA. */
REMAP_RGBA(8, 8, 8, 8, USCALED);
REMAP_RGBA(8, 8, 8, 8, SSCALED);
REMAP_RGBA(10, 10, 10, 2, USCALED);
REMAP_RGBA(10, 10, 10, 2, SSCALED);
default:
return PIPE_FORMAT_NONE;
}
}
static const struct util_format_unpack_description *util_format_unpack_table[PIPE_FORMAT_COUNT];
static void
util_format_unpack_table_init(void)
{
for (enum pipe_format format = PIPE_FORMAT_NONE; format < PIPE_FORMAT_COUNT; format++) {
#if (defined(PIPE_ARCH_AARCH64) || defined(PIPE_ARCH_ARM)) && !defined(NO_FORMAT_ASM) && !defined(__SOFTFP__)
const struct util_format_unpack_description *unpack = util_format_unpack_description_neon(format);
if (unpack) {
util_format_unpack_table[format] = unpack;
continue;
}
#endif
util_format_unpack_table[format] = util_format_unpack_description_generic(format);
}
}
const struct util_format_unpack_description *
util_format_unpack_description(enum pipe_format format)
{
static once_flag flag = ONCE_FLAG_INIT;
call_once(&flag, util_format_unpack_table_init);
return util_format_unpack_table[format];
}
enum pipe_format
util_format_snorm_to_unorm(enum pipe_format format)
{
#define CASE(x) case PIPE_FORMAT_##x##_SNORM: return PIPE_FORMAT_##x##_UNORM
switch (format) {
CASE(R8G8B8A8);
CASE(R8G8B8X8);
CASE(B8G8R8A8);
CASE(B8G8R8X8);
CASE(A8R8G8B8);
CASE(X8R8G8B8);
CASE(A8B8G8R8);
CASE(X8B8G8R8);
CASE(R10G10B10A2);
CASE(R10G10B10X2);
CASE(B10G10R10A2);
CASE(B10G10R10X2);
CASE(R8);
CASE(R8G8);
CASE(G8R8);
CASE(R8G8B8);
CASE(B8G8R8);
CASE(R16);
CASE(R16G16);
CASE(G16R16);
CASE(R16G16B16);
CASE(R16G16B16A16);
CASE(R16G16B16X16);
CASE(R32);
CASE(R32G32);
CASE(R32G32B32);
CASE(R32G32B32A32);
CASE(RGTC1);
CASE(RGTC2);
CASE(ETC2_R11);
CASE(ETC2_RG11);
CASE(A8);
CASE(A16);
CASE(L8);
CASE(L16);
CASE(I8);
CASE(I16);
CASE(L8A8);
CASE(L16A16);
CASE(R8A8);
CASE(R16A16);
CASE(LATC1);
CASE(LATC2);
default:
return format;
}
#undef CASE
}
enum pipe_format
util_format_rgbx_to_rgba(enum pipe_format format)
{
switch (format) {
case PIPE_FORMAT_B8G8R8X8_UNORM:
return PIPE_FORMAT_B8G8R8A8_UNORM;
case PIPE_FORMAT_X8B8G8R8_UNORM:
return PIPE_FORMAT_A8B8G8R8_UNORM;
case PIPE_FORMAT_X8R8G8B8_UNORM:
return PIPE_FORMAT_A8R8G8B8_UNORM;
case PIPE_FORMAT_X8B8G8R8_SRGB:
return PIPE_FORMAT_A8B8G8R8_SRGB;
case PIPE_FORMAT_B8G8R8X8_SRGB:
return PIPE_FORMAT_B8G8R8A8_SRGB;
case PIPE_FORMAT_X8R8G8B8_SRGB:
return PIPE_FORMAT_A8R8G8B8_SRGB;
case PIPE_FORMAT_B5G5R5X1_UNORM:
return PIPE_FORMAT_B5G5R5A1_UNORM;
case PIPE_FORMAT_R10G10B10X2_USCALED:
return PIPE_FORMAT_R10G10B10A2_USCALED;
case PIPE_FORMAT_R10G10B10X2_SNORM:
return PIPE_FORMAT_R10G10B10A2_SNORM;
case PIPE_FORMAT_R8G8B8X8_UNORM:
return PIPE_FORMAT_R8G8B8A8_UNORM;
case PIPE_FORMAT_B4G4R4X4_UNORM:
return PIPE_FORMAT_B4G4R4A4_UNORM;
case PIPE_FORMAT_R8G8B8X8_SNORM:
return PIPE_FORMAT_R8G8B8A8_SNORM;
case PIPE_FORMAT_R8G8B8X8_SRGB:
return PIPE_FORMAT_R8G8B8A8_SRGB;
case PIPE_FORMAT_R8G8B8X8_UINT:
return PIPE_FORMAT_R8G8B8A8_UINT;
case PIPE_FORMAT_R8G8B8X8_SINT:
return PIPE_FORMAT_R8G8B8A8_SINT;
case PIPE_FORMAT_B10G10R10X2_UNORM:
return PIPE_FORMAT_B10G10R10A2_UNORM;
case PIPE_FORMAT_R16G16B16X16_UNORM:
return PIPE_FORMAT_R16G16B16A16_UNORM;
case PIPE_FORMAT_R16G16B16X16_SNORM:
return PIPE_FORMAT_R16G16B16A16_SNORM;
case PIPE_FORMAT_R16G16B16X16_FLOAT:
return PIPE_FORMAT_R16G16B16A16_FLOAT;
case PIPE_FORMAT_R16G16B16X16_UINT:
return PIPE_FORMAT_R16G16B16A16_UINT;
case PIPE_FORMAT_R16G16B16X16_SINT:
return PIPE_FORMAT_R16G16B16A16_SINT;
case PIPE_FORMAT_R32G32B32X32_FLOAT:
return PIPE_FORMAT_R32G32B32A32_FLOAT;
case PIPE_FORMAT_R32G32B32X32_UINT:
return PIPE_FORMAT_R32G32B32A32_UINT;
case PIPE_FORMAT_R32G32B32X32_SINT:
return PIPE_FORMAT_R32G32B32A32_SINT;
case PIPE_FORMAT_X8B8G8R8_SNORM:
return PIPE_FORMAT_A8B8G8R8_SNORM;
case PIPE_FORMAT_R10G10B10X2_UNORM:
return PIPE_FORMAT_R10G10B10A2_UNORM;
case PIPE_FORMAT_X1B5G5R5_UNORM:
return PIPE_FORMAT_A1B5G5R5_UNORM;
case PIPE_FORMAT_X8B8G8R8_SINT:
return PIPE_FORMAT_A8B8G8R8_SINT;
case PIPE_FORMAT_B8G8R8X8_SNORM:
return PIPE_FORMAT_B8G8R8A8_SNORM;
case PIPE_FORMAT_B8G8R8X8_UINT:
return PIPE_FORMAT_B8G8R8A8_UINT;
case PIPE_FORMAT_B8G8R8X8_SINT:
return PIPE_FORMAT_B8G8R8A8_SINT;
case PIPE_FORMAT_X8R8G8B8_SNORM:
return PIPE_FORMAT_A8R8G8B8_SNORM;
case PIPE_FORMAT_X8R8G8B8_SINT:
return PIPE_FORMAT_A8R8G8B8_SINT;
case PIPE_FORMAT_R5G5B5X1_UNORM:
return PIPE_FORMAT_R5G5B5A1_UNORM;
case PIPE_FORMAT_X1R5G5B5_UNORM:
return PIPE_FORMAT_A1R5G5B5_UNORM;
case PIPE_FORMAT_R4G4B4X4_UNORM:
return PIPE_FORMAT_R4G4B4A4_UNORM;
case PIPE_FORMAT_B10G10R10X2_SNORM:
return PIPE_FORMAT_B10G10R10A2_SNORM;
case PIPE_FORMAT_R10G10B10X2_SINT:
return PIPE_FORMAT_R10G10B10A2_SINT;
case PIPE_FORMAT_B10G10R10X2_SINT:
return PIPE_FORMAT_B10G10R10A2_SINT;
default: {
ASSERTED const struct util_format_description *desc = util_format_description(format);
/* Assert that the format doesn't contain X instead of A. */
assert(desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS ||
(desc->channel[0].type != UTIL_FORMAT_TYPE_VOID &&
desc->channel[desc->nr_channels - 1].type != UTIL_FORMAT_TYPE_VOID));
return format;
}
}
}