0,0 → 1,805 |
/************************************************************************** |
* |
* 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 "u_math.h" |
#include "u_memory.h" |
#include "u_format.h" |
#include "u_format_s3tc.h" |
#include "u_surface.h" |
|
#include "pipe/p_defines.h" |
|
|
boolean |
util_format_is_float(enum pipe_format format) |
{ |
const struct util_format_description *desc = util_format_description(format); |
unsigned i; |
|
assert(desc); |
if (!desc) { |
return FALSE; |
} |
|
i = util_format_get_first_non_void_channel(format); |
if (i == -1) { |
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] != UTIL_FORMAT_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] == UTIL_FORMAT_SWIZZLE_X && |
desc->swizzle[1] == UTIL_FORMAT_SWIZZLE_X && |
desc->swizzle[2] == UTIL_FORMAT_SWIZZLE_X && |
desc->swizzle[3] == UTIL_FORMAT_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] == UTIL_FORMAT_SWIZZLE_0 && |
desc->swizzle[1] == UTIL_FORMAT_SWIZZLE_0 && |
desc->swizzle[2] == UTIL_FORMAT_SWIZZLE_0 && |
desc->swizzle[3] == UTIL_FORMAT_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; |
|
/* 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 all non-void channels are normalized signed. |
*/ |
boolean |
util_format_is_snorm(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; |
} |
|
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] == UTIL_FORMAT_SWIZZLE_X && |
desc->swizzle[1] == UTIL_FORMAT_SWIZZLE_X && |
desc->swizzle[2] == UTIL_FORMAT_SWIZZLE_X && |
desc->swizzle[3] == UTIL_FORMAT_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] == UTIL_FORMAT_SWIZZLE_X && |
desc->swizzle[1] == UTIL_FORMAT_SWIZZLE_X && |
desc->swizzle[2] == UTIL_FORMAT_SWIZZLE_X && |
desc->swizzle[3] == UTIL_FORMAT_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; |
} |
|
boolean |
util_format_is_supported(enum pipe_format format, unsigned bind) |
{ |
if (util_format_is_s3tc(format) && !util_format_s3tc_enabled) { |
return FALSE; |
} |
|
#ifndef TEXTURE_FLOAT_ENABLED |
if ((bind & PIPE_BIND_RENDER_TARGET) && |
format != PIPE_FORMAT_R9G9B9E5_FLOAT && |
format != PIPE_FORMAT_R11G11B10_FLOAT && |
util_format_is_float(format)) { |
return FALSE; |
} |
#endif |
|
return TRUE; |
} |
|
|
/** |
* 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; |
|
assert(desc); |
|
/* |
* 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_read_4f(enum pipe_format format, |
float *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; |
float *dst_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); |
dst_row = dst; |
|
format_desc->unpack_rgba_float(dst_row, dst_stride, src_row, src_stride, w, h); |
} |
|
|
void |
util_format_write_4f(enum pipe_format format, |
const float *src, unsigned src_stride, |
void *dst, unsigned dst_stride, |
unsigned x, unsigned y, unsigned w, unsigned h) |
{ |
const struct util_format_description *format_desc; |
uint8_t *dst_row; |
const float *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; |
|
format_desc->pack_rgba_float(dst_row, dst_stride, src_row, 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; |
uint8_t *dst_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); |
dst_row = dst; |
|
format_desc->unpack_rgba_8unorm(dst_row, 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; |
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; |
|
format_desc->pack_rgba_8unorm(dst_row, dst_stride, src_row, src_stride, w, h); |
} |
|
void |
util_format_read_4ui(enum pipe_format format, |
unsigned *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; |
uint32_t *dst_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); |
dst_row = dst; |
|
format_desc->unpack_rgba_uint(dst_row, dst_stride, src_row, src_stride, w, h); |
} |
|
void |
util_format_write_4ui(enum pipe_format format, |
const unsigned int *src, unsigned src_stride, |
void *dst, unsigned dst_stride, |
unsigned x, unsigned y, unsigned w, unsigned h) |
{ |
const struct util_format_description *format_desc; |
uint8_t *dst_row; |
const uint32_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; |
|
format_desc->pack_rgba_uint(dst_row, dst_stride, src_row, src_stride, w, h); |
} |
|
void |
util_format_read_4i(enum pipe_format format, |
int *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; |
int32_t *dst_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); |
dst_row = dst; |
|
format_desc->unpack_rgba_sint(dst_row, dst_stride, src_row, src_stride, w, h); |
} |
|
void |
util_format_write_4i(enum pipe_format format, |
const int *src, unsigned src_stride, |
void *dst, unsigned dst_stride, |
unsigned x, unsigned y, unsigned w, unsigned h) |
{ |
const struct util_format_description *format_desc; |
uint8_t *dst_row; |
const int32_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; |
|
format_desc->pack_rgba_sint(dst_row, dst_stride, src_row, src_stride, w, h); |
} |
|
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 util_format_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_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; |
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 (src_format_desc->unpack_z_float && |
dst_format_desc->pack_z_float) { |
tmp_z = MALLOC(width * sizeof *tmp_z); |
} |
|
if (src_format_desc->unpack_s_8uint && |
dst_format_desc->pack_s_8uint) { |
tmp_s = MALLOC(width * sizeof *tmp_s); |
} |
|
while (height--) { |
if (tmp_z) { |
src_format_desc->unpack_z_float(tmp_z, 0, src_row, src_stride, width, 1); |
dst_format_desc->pack_z_float(dst_row, dst_stride, tmp_z, 0, width, 1); |
} |
|
if (tmp_s) { |
src_format_desc->unpack_s_8uint(tmp_s, 0, src_row, src_stride, width, 1); |
dst_format_desc->pack_s_8uint(dst_row, dst_stride, tmp_s, 0, width, 1); |
} |
|
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 (!src_format_desc->unpack_rgba_8unorm || |
!dst_format_desc->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) { |
src_format_desc->unpack_rgba_8unorm(tmp_row, tmp_stride, src_row, src_stride, width, y_step); |
dst_format_desc->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) { |
src_format_desc->unpack_rgba_8unorm(tmp_row, tmp_stride, src_row, src_stride, width, height); |
dst_format_desc->pack_rgba_8unorm(dst_row, dst_stride, tmp_row, tmp_stride, width, height); |
} |
|
FREE(tmp_row); |
} |
else { |
unsigned tmp_stride; |
float *tmp_row; |
|
if (!src_format_desc->unpack_rgba_float || |
!dst_format_desc->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) { |
src_format_desc->unpack_rgba_float(tmp_row, tmp_stride, src_row, src_stride, width, y_step); |
dst_format_desc->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) { |
src_format_desc->unpack_rgba_float(tmp_row, tmp_stride, src_row, src_stride, width, height); |
dst_format_desc->pack_rgba_float(dst_row, dst_stride, tmp_row, tmp_stride, width, height); |
} |
|
FREE(tmp_row); |
} |
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] <= UTIL_FORMAT_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_RED: dst->ui[c] = src->ui[0]; break; |
case PIPE_SWIZZLE_GREEN: dst->ui[c] = src->ui[1]; break; |
case PIPE_SWIZZLE_BLUE: dst->ui[c] = src->ui[2]; break; |
case PIPE_SWIZZLE_ALPHA: dst->ui[c] = src->ui[3]; break; |
default: |
dst->ui[c] = (swz[c] == PIPE_SWIZZLE_ONE) ? 1 : 0; |
break; |
} |
} |
} else { |
for (c = 0; c < 4; ++c) { |
switch (swz[c]) { |
case PIPE_SWIZZLE_RED: dst->f[c] = src->f[0]; break; |
case PIPE_SWIZZLE_GREEN: dst->f[c] = src->f[1]; break; |
case PIPE_SWIZZLE_BLUE: dst->f[c] = src->f[2]; break; |
case PIPE_SWIZZLE_ALPHA: dst->f[c] = src->f[3]; break; |
default: |
dst->f[c] = (swz[c] == PIPE_SWIZZLE_ONE) ? 1.0f : 0.0f; |
break; |
} |
} |
} |
} |
|
void util_format_swizzle_4f(float *dst, const float *src, |
const unsigned char swz[4]) |
{ |
unsigned i; |
|
for (i = 0; i < 4; i++) { |
if (swz[i] <= UTIL_FORMAT_SWIZZLE_W) |
dst[i] = src[swz[i]]; |
else if (swz[i] == UTIL_FORMAT_SWIZZLE_0) |
dst[i] = 0; |
else if (swz[i] == UTIL_FORMAT_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 UTIL_FORMAT_SWIZZLE_X: |
dst[0] = src[i]; |
break; |
case UTIL_FORMAT_SWIZZLE_Y: |
dst[1] = src[i]; |
break; |
case UTIL_FORMAT_SWIZZLE_Z: |
dst[2] = src[i]; |
break; |
case UTIL_FORMAT_SWIZZLE_W: |
dst[3] = src[i]; |
break; |
} |
} |
} |