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android / platform / external / mesa3d / 217def3ac67 / . / src / mesa / main / format_unpack.py
blob: 161a402156733392f1113e3743acccf05218aa44 [file] [log] [blame]
from __future__ import print_function
from mako.template import Template
from sys import argv
string = """/*
* Mesa 3-D graphics library
*
* Copyright (c) 2011 VMware, Inc.
* Copyright (c) 2014 Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
/**
* Color, depth, stencil packing functions.
* Used to pack basic color, depth and stencil formats to specific
* hardware formats.
*
* There are both per-pixel and per-row packing functions:
* - The former will be used by swrast to write values to the color, depth,
* stencil buffers when drawing points, lines and masked spans.
* - The later will be used for image-oriented functions like glDrawPixels,
* glAccum, and glTexImage.
*/
#include <stdint.h>
#include <stdlib.h>
#include "format_unpack.h"
#include "format_utils.h"
#include "macros.h"
#include "util/format_rgb9e5.h"
#include "util/format_r11g11b10f.h"
#include "util/format_srgb.h"
#define UNPACK(SRC, OFFSET, BITS) (((SRC) >> (OFFSET)) & MAX_UINT(BITS))
<%
import format_parser as parser
formats = parser.parse(argv[1])
rgb_formats = []
for f in formats:
if f.name == 'MESA_FORMAT_NONE':
continue
if f.colorspace not in ('rgb', 'srgb'):
continue
rgb_formats.append(f)
%>
/* float unpacking functions */
%for f in rgb_formats:
%if f.name in ('MESA_FORMAT_R9G9B9E5_FLOAT', 'MESA_FORMAT_R11G11B10_FLOAT'):
<% continue %>
%elif f.is_int() and not f.is_normalized():
<% continue %>
%elif f.is_compressed():
<% continue %>
%endif
static inline void
unpack_float_${f.short_name()}(const void *void_src, float dst[4])
{
${f.datatype()} *src = (${f.datatype()} *)void_src;
%if f.layout == parser.PACKED:
%for c in f.channels:
%if c.type != 'x':
${c.datatype()} ${c.name} = UNPACK(*src, ${c.shift}, ${c.size});
%endif
%endfor
%elif f.layout == parser.ARRAY:
%for (i, c) in enumerate(f.channels):
%if c.type != 'x':
${c.datatype()} ${c.name} = src[${i}];
%endif
%endfor
%else:
<% assert False %>
%endif
%for i in range(4):
<% s = f.swizzle[i] %>
%if 0 <= s and s <= parser.Swizzle.SWIZZLE_W:
<% c = f.channels[s] %>
%if c.type == parser.UNSIGNED:
%if f.colorspace == 'srgb' and c.name in 'rgb':
<% assert c.size == 8 %>
dst[${i}] = util_format_srgb_8unorm_to_linear_float(${c.name});
%else:
dst[${i}] = _mesa_unorm_to_float(${c.name}, ${c.size});
%endif
%elif c.type == parser.SIGNED:
dst[${i}] = _mesa_snorm_to_float(${c.name}, ${c.size});
%elif c.type == parser.FLOAT:
%if c.size == 32:
dst[${i}] = ${c.name};
%elif c.size == 16:
dst[${i}] = _mesa_half_to_float(${c.name});
%else:
<% assert False %>
%endif
%else:
<% assert False %>
%endif
%elif s == parser.Swizzle.SWIZZLE_ZERO:
dst[${i}] = 0.0f;
%elif s == parser.Swizzle.SWIZZLE_ONE:
dst[${i}] = 1.0f;
%else:
<% assert False %>
%endif
%endfor
}
%endfor
static void
unpack_float_r9g9b9e5_float(const void *src, float dst[4])
{
rgb9e5_to_float3(*(const uint32_t *)src, dst);
dst[3] = 1.0f;
}
static void
unpack_float_r11g11b10_float(const void *src, float dst[4])
{
r11g11b10f_to_float3(*(const uint32_t *)src, dst);
dst[3] = 1.0f;
}
static void
unpack_float_ycbcr(const void *src, float dst[][4], uint32_t n)
{
uint32_t i;
for (i = 0; i < n; i++) {
const uint16_t *src0 = ((const uint16_t *) src) + i * 2; /* even */
const uint16_t *src1 = src0 + 1; /* odd */
const uint8_t y0 = (*src0 >> 8) & 0xff; /* luminance */
const uint8_t cb = *src0 & 0xff; /* chroma U */
const uint8_t y1 = (*src1 >> 8) & 0xff; /* luminance */
const uint8_t cr = *src1 & 0xff; /* chroma V */
const uint8_t y = (i & 1) ? y1 : y0; /* choose even/odd luminance */
float r = 1.164F * (y - 16) + 1.596F * (cr - 128);
float g = 1.164F * (y - 16) - 0.813F * (cr - 128) - 0.391F * (cb - 128);
float b = 1.164F * (y - 16) + 2.018F * (cb - 128);
r *= (1.0F / 255.0F);
g *= (1.0F / 255.0F);
b *= (1.0F / 255.0F);
dst[i][0] = CLAMP(r, 0.0F, 1.0F);
dst[i][1] = CLAMP(g, 0.0F, 1.0F);
dst[i][2] = CLAMP(b, 0.0F, 1.0F);
dst[i][3] = 1.0F;
}
}
static void
unpack_float_ycbcr_rev(const void *src, float dst[][4], uint32_t n)
{
uint32_t i;
for (i = 0; i < n; i++) {
const uint16_t *src0 = ((const uint16_t *) src) + i * 2; /* even */
const uint16_t *src1 = src0 + 1; /* odd */
const uint8_t y0 = *src0 & 0xff; /* luminance */
const uint8_t cr = (*src0 >> 8) & 0xff; /* chroma V */
const uint8_t y1 = *src1 & 0xff; /* luminance */
const uint8_t cb = (*src1 >> 8) & 0xff; /* chroma U */
const uint8_t y = (i & 1) ? y1 : y0; /* choose even/odd luminance */
float r = 1.164F * (y - 16) + 1.596F * (cr - 128);
float g = 1.164F * (y - 16) - 0.813F * (cr - 128) - 0.391F * (cb - 128);
float b = 1.164F * (y - 16) + 2.018F * (cb - 128);
r *= (1.0F / 255.0F);
g *= (1.0F / 255.0F);
b *= (1.0F / 255.0F);
dst[i][0] = CLAMP(r, 0.0F, 1.0F);
dst[i][1] = CLAMP(g, 0.0F, 1.0F);
dst[i][2] = CLAMP(b, 0.0F, 1.0F);
dst[i][3] = 1.0F;
}
}
/* ubyte packing functions */
%for f in rgb_formats:
%if not f.is_normalized():
<% continue %>
%endif
static inline void
unpack_ubyte_${f.short_name()}(const void *void_src, uint8_t dst[4])
{
${f.datatype()} *src = (${f.datatype()} *)void_src;
%if f.layout == parser.PACKED:
%for c in f.channels:
%if c.type != 'x':
${c.datatype()} ${c.name} = UNPACK(*src, ${c.shift}, ${c.size});
%endif
%endfor
%elif f.layout == parser.ARRAY:
%for (i, c) in enumerate(f.channels):
%if c.type != 'x':
${c.datatype()} ${c.name} = src[${i}];
%endif
%endfor
%else:
<% assert False %>
%endif
%for i in range(4):
<% s = f.swizzle[i] %>
%if 0 <= s and s <= parser.Swizzle.SWIZZLE_W:
<% c = f.channels[s] %>
%if c.type == parser.UNSIGNED:
%if f.colorspace == 'srgb' and c.name in 'rgb':
<% assert c.size == 8 %>
dst[${i}] = util_format_srgb_to_linear_8unorm(${c.name});
%else:
dst[${i}] = _mesa_unorm_to_unorm(${c.name}, ${c.size}, 8);
%endif
%elif c.type == parser.SIGNED:
dst[${i}] = _mesa_snorm_to_unorm(${c.name}, ${c.size}, 8);
%elif c.type == parser.FLOAT:
%if c.size == 32:
dst[${i}] = _mesa_float_to_unorm(${c.name}, 8);
%elif c.size == 16:
dst[${i}] = _mesa_half_to_unorm(${c.name}, 8);
%else:
<% assert False %>
%endif
%else:
<% assert False %>
%endif
%elif s == parser.Swizzle.SWIZZLE_ZERO:
dst[${i}] = 0;
%elif s == parser.Swizzle.SWIZZLE_ONE:
dst[${i}] = 255;
%else:
<% assert False %>
%endif
%endfor
}
%endfor
/* integer packing functions */
%for f in rgb_formats:
%if not f.is_int():
<% continue %>
%elif f.is_normalized():
<% continue %>
%endif
static inline void
unpack_int_${f.short_name()}(const void *void_src, uint32_t dst[4])
{
${f.datatype()} *src = (${f.datatype()} *)void_src;
%if f.layout == parser.PACKED:
%for c in f.channels:
%if c.type != 'x':
${c.datatype()} ${c.name} = UNPACK(*src, ${c.shift}, ${c.size});
%endif
%endfor
%elif f.layout == parser.ARRAY:
%for (i, c) in enumerate(f.channels):
%if c.type != 'x':
${c.datatype()} ${c.name} = src[${i}];
%endif
%endfor
%else:
<% assert False %>
%endif
%for i in range(4):
<% s = f.swizzle[i] %>
%if 0 <= s and s <= parser.Swizzle.SWIZZLE_W:
dst[${i}] = ${f.channels[s].name};
%elif s == parser.Swizzle.SWIZZLE_ZERO:
dst[${i}] = 0;
%elif s == parser.Swizzle.SWIZZLE_ONE:
dst[${i}] = 1;
%else:
<% assert False %>
%endif
%endfor
}
%endfor
void
_mesa_unpack_rgba_row(mesa_format format, uint32_t n,
const void *src, float dst[][4])
{
uint8_t *s = (uint8_t *)src;
uint32_t i;
switch (format) {
%for f in rgb_formats:
%if f.is_compressed():
<% continue %>
%elif f.is_int() and not f.is_normalized():
<% continue %>
%endif
case ${f.name}:
for (i = 0; i < n; ++i) {
unpack_float_${f.short_name()}(s, dst[i]);
s += ${f.block_size() // 8};
}
break;
%endfor
case MESA_FORMAT_YCBCR:
unpack_float_ycbcr(src, dst, n);
break;
case MESA_FORMAT_YCBCR_REV:
unpack_float_ycbcr_rev(src, dst, n);
break;
default:
unreachable("bad format");
}
}
void
_mesa_unpack_ubyte_rgba_row(mesa_format format, uint32_t n,
const void *src, uint8_t dst[][4])
{
uint8_t *s = (uint8_t *)src;
uint32_t i;
switch (format) {
%for f in rgb_formats:
%if not f.is_normalized():
<% continue %>
%endif
case ${f.name}:
for (i = 0; i < n; ++i) {
unpack_ubyte_${f.short_name()}(s, dst[i]);
s += ${f.block_size() // 8};
}
break;
%endfor
default:
/* get float values, convert to ubyte */
{
float *tmp = malloc(n * 4 * sizeof(float));
if (tmp) {
uint32_t i;
_mesa_unpack_rgba_row(format, n, src, (float (*)[4]) tmp);
for (i = 0; i < n; i++) {
dst[i][0] = _mesa_float_to_unorm(tmp[i*4+0], 8);
dst[i][1] = _mesa_float_to_unorm(tmp[i*4+1], 8);
dst[i][2] = _mesa_float_to_unorm(tmp[i*4+2], 8);
dst[i][3] = _mesa_float_to_unorm(tmp[i*4+3], 8);
}
free(tmp);
}
}
break;
}
}
void
_mesa_unpack_uint_rgba_row(mesa_format format, uint32_t n,
const void *src, uint32_t dst[][4])
{
uint8_t *s = (uint8_t *)src;
uint32_t i;
switch (format) {
%for f in rgb_formats:
%if not f.is_int():
<% continue %>
%elif f.is_normalized():
<% continue %>
%endif
case ${f.name}:
for (i = 0; i < n; ++i) {
unpack_int_${f.short_name()}(s, dst[i]);
s += ${f.block_size() // 8};
}
break;
%endfor
default:
unreachable("bad format");
}
}
/**
* Unpack a 2D rect of pixels returning float RGBA colors.
* \param format the source image format
* \param src start address of the source image
* \param srcRowStride source image row stride in bytes
* \param dst start address of the dest image
* \param dstRowStride dest image row stride in bytes
* \param x source image start X pos
* \param y source image start Y pos
* \param width width of rect region to convert
* \param height height of rect region to convert
*/
void
_mesa_unpack_rgba_block(mesa_format format,
const void *src, int32_t srcRowStride,
float dst[][4], int32_t dstRowStride,
uint32_t x, uint32_t y, uint32_t width, uint32_t height)
{
const uint32_t srcPixStride = _mesa_get_format_bytes(format);
const uint32_t dstPixStride = 4 * sizeof(float);
const uint8_t *srcRow;
uint8_t *dstRow;
uint32_t i;
/* XXX needs to be fixed for compressed formats */
srcRow = ((const uint8_t *) src) + srcRowStride * y + srcPixStride * x;
dstRow = ((uint8_t *) dst) + dstRowStride * y + dstPixStride * x;
for (i = 0; i < height; i++) {
_mesa_unpack_rgba_row(format, width, srcRow, (float (*)[4]) dstRow);
dstRow += dstRowStride;
srcRow += srcRowStride;
}
}
/** Helper struct for MESA_FORMAT_Z32_FLOAT_S8X24_UINT */
struct z32f_x24s8
{
float z;
uint32_t x24s8;
};
typedef void (*unpack_float_z_func)(uint32_t n, const void *src, float *dst);
static void
unpack_float_z_X8_UINT_Z24_UNORM(uint32_t n, const void *src, float *dst)
{
/* only return Z, not stencil data */
const uint32_t *s = ((const uint32_t *) src);
const double scale = 1.0 / (double) 0xffffff;
uint32_t i;
for (i = 0; i < n; i++) {
dst[i] = (float) ((s[i] >> 8) * scale);
assert(dst[i] >= 0.0F);
assert(dst[i] <= 1.0F);
}
}
static void
unpack_float_z_Z24_UNORM_X8_UINT(uint32_t n, const void *src, float *dst)
{
/* only return Z, not stencil data */
const uint32_t *s = ((const uint32_t *) src);
const double scale = 1.0 / (double) 0xffffff;
uint32_t i;
for (i = 0; i < n; i++) {
dst[i] = (float) ((s[i] & 0x00ffffff) * scale);
assert(dst[i] >= 0.0F);
assert(dst[i] <= 1.0F);
}
}
static void
unpack_float_Z_UNORM16(uint32_t n, const void *src, float *dst)
{
const uint16_t *s = ((const uint16_t *) src);
uint32_t i;
for (i = 0; i < n; i++) {
dst[i] = s[i] * (1.0F / 65535.0F);
}
}
static void
unpack_float_Z_UNORM32(uint32_t n, const void *src, float *dst)
{
const uint32_t *s = ((const uint32_t *) src);
uint32_t i;
for (i = 0; i < n; i++) {
dst[i] = s[i] * (1.0F / 0xffffffff);
}
}
static void
unpack_float_Z_FLOAT32(uint32_t n, const void *src, float *dst)
{
memcpy(dst, src, n * sizeof(float));
}
static void
unpack_float_z_Z32X24S8(uint32_t n, const void *src, float *dst)
{
const struct z32f_x24s8 *s = (const struct z32f_x24s8 *) src;
uint32_t i;
for (i = 0; i < n; i++) {
dst[i] = s[i].z;
}
}
/**
* Unpack Z values.
* The returned values will always be in the range [0.0, 1.0].
*/
void
_mesa_unpack_float_z_row(mesa_format format, uint32_t n,
const void *src, float *dst)
{
unpack_float_z_func unpack;
switch (format) {
case MESA_FORMAT_S8_UINT_Z24_UNORM:
case MESA_FORMAT_X8_UINT_Z24_UNORM:
unpack = unpack_float_z_X8_UINT_Z24_UNORM;
break;
case MESA_FORMAT_Z24_UNORM_S8_UINT:
case MESA_FORMAT_Z24_UNORM_X8_UINT:
unpack = unpack_float_z_Z24_UNORM_X8_UINT;
break;
case MESA_FORMAT_Z_UNORM16:
unpack = unpack_float_Z_UNORM16;
break;
case MESA_FORMAT_Z_UNORM32:
unpack = unpack_float_Z_UNORM32;
break;
case MESA_FORMAT_Z_FLOAT32:
unpack = unpack_float_Z_FLOAT32;
break;
case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
unpack = unpack_float_z_Z32X24S8;
break;
default:
unreachable("bad format in _mesa_unpack_float_z_row");
}
unpack(n, src, dst);
}
typedef void (*unpack_uint_z_func)(const void *src, uint32_t *dst, uint32_t n);
static void
unpack_uint_z_X8_UINT_Z24_UNORM(const void *src, uint32_t *dst, uint32_t n)
{
/* only return Z, not stencil data */
const uint32_t *s = ((const uint32_t *) src);
uint32_t i;
for (i = 0; i < n; i++) {
dst[i] = (s[i] & 0xffffff00) | (s[i] >> 24);
}
}
static void
unpack_uint_z_Z24_UNORM_X8_UINT(const void *src, uint32_t *dst, uint32_t n)
{
/* only return Z, not stencil data */
const uint32_t *s = ((const uint32_t *) src);
uint32_t i;
for (i = 0; i < n; i++) {
dst[i] = (s[i] << 8) | ((s[i] >> 16) & 0xff);
}
}
static void
unpack_uint_Z_UNORM16(const void *src, uint32_t *dst, uint32_t n)
{
const uint16_t *s = ((const uint16_t *)src);
uint32_t i;
for (i = 0; i < n; i++) {
dst[i] = (s[i] << 16) | s[i];
}
}
static void
unpack_uint_Z_UNORM32(const void *src, uint32_t *dst, uint32_t n)
{
memcpy(dst, src, n * sizeof(uint32_t));
}
static void
unpack_uint_Z_FLOAT32(const void *src, uint32_t *dst, uint32_t n)
{
const float *s = (const float *)src;
uint32_t i;
for (i = 0; i < n; i++) {
dst[i] = FLOAT_TO_UINT(CLAMP(s[i], 0.0F, 1.0F));
}
}
static void
unpack_uint_Z_FLOAT32_X24S8(const void *src, uint32_t *dst, uint32_t n)
{
const struct z32f_x24s8 *s = (const struct z32f_x24s8 *) src;
uint32_t i;
for (i = 0; i < n; i++) {
dst[i] = FLOAT_TO_UINT(CLAMP(s[i].z, 0.0F, 1.0F));
}
}
/**
* Unpack Z values.
* The returned values will always be in the range [0, 0xffffffff].
*/
void
_mesa_unpack_uint_z_row(mesa_format format, uint32_t n,
const void *src, uint32_t *dst)
{
unpack_uint_z_func unpack;
const uint8_t *srcPtr = (uint8_t *) src;
switch (format) {
case MESA_FORMAT_S8_UINT_Z24_UNORM:
case MESA_FORMAT_X8_UINT_Z24_UNORM:
unpack = unpack_uint_z_X8_UINT_Z24_UNORM;
break;
case MESA_FORMAT_Z24_UNORM_S8_UINT:
case MESA_FORMAT_Z24_UNORM_X8_UINT:
unpack = unpack_uint_z_Z24_UNORM_X8_UINT;
break;
case MESA_FORMAT_Z_UNORM16:
unpack = unpack_uint_Z_UNORM16;
break;
case MESA_FORMAT_Z_UNORM32:
unpack = unpack_uint_Z_UNORM32;
break;
case MESA_FORMAT_Z_FLOAT32:
unpack = unpack_uint_Z_FLOAT32;
break;
case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
unpack = unpack_uint_Z_FLOAT32_X24S8;
break;
default:
unreachable("bad format %s in _mesa_unpack_uint_z_row");
}
unpack(srcPtr, dst, n);
}
static void
unpack_ubyte_s_S_UINT8(const void *src, uint8_t *dst, uint32_t n)
{
memcpy(dst, src, n);
}
static void
unpack_ubyte_s_S8_UINT_Z24_UNORM(const void *src, uint8_t *dst, uint32_t n)
{
uint32_t i;
const uint32_t *src32 = src;
for (i = 0; i < n; i++)
dst[i] = src32[i] & 0xff;
}
static void
unpack_ubyte_s_Z24_UNORM_S8_UINT(const void *src, uint8_t *dst, uint32_t n)
{
uint32_t i;
const uint32_t *src32 = src;
for (i = 0; i < n; i++)
dst[i] = src32[i] >> 24;
}
static void
unpack_ubyte_s_Z32_FLOAT_S8X24_UINT(const void *src, uint8_t *dst, uint32_t n)
{
uint32_t i;
const struct z32f_x24s8 *s = (const struct z32f_x24s8 *) src;
for (i = 0; i < n; i++)
dst[i] = s[i].x24s8 & 0xff;
}
void
_mesa_unpack_ubyte_stencil_row(mesa_format format, uint32_t n,
const void *src, uint8_t *dst)
{
switch (format) {
case MESA_FORMAT_S_UINT8:
unpack_ubyte_s_S_UINT8(src, dst, n);
break;
case MESA_FORMAT_S8_UINT_Z24_UNORM:
unpack_ubyte_s_S8_UINT_Z24_UNORM(src, dst, n);
break;
case MESA_FORMAT_Z24_UNORM_S8_UINT:
unpack_ubyte_s_Z24_UNORM_S8_UINT(src, dst, n);
break;
case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
unpack_ubyte_s_Z32_FLOAT_S8X24_UINT(src, dst, n);
break;
default:
unreachable("bad format %s in _mesa_unpack_ubyte_s_row");
}
}
static void
unpack_uint_24_8_depth_stencil_Z24_UNORM_S8_UINT(const uint32_t *src, uint32_t *dst, uint32_t n)
{
uint32_t i;
for (i = 0; i < n; i++) {
uint32_t val = src[i];
dst[i] = val >> 24 | val << 8;
}
}
static void
unpack_uint_24_8_depth_stencil_Z32_S8X24(const uint32_t *src,
uint32_t *dst, uint32_t n)
{
uint32_t i;
for (i = 0; i < n; i++) {
/* 8 bytes per pixel (float + uint32) */
float zf = ((float *) src)[i * 2 + 0];
uint32_t z24 = (uint32_t) (zf * (float) 0xffffff);
uint32_t s = src[i * 2 + 1] & 0xff;
dst[i] = (z24 << 8) | s;
}
}
static void
unpack_uint_24_8_depth_stencil_S8_UINT_Z24_UNORM(const uint32_t *src, uint32_t *dst, uint32_t n)
{
memcpy(dst, src, n * 4);
}
/**
* Unpack depth/stencil returning as GL_UNSIGNED_INT_24_8.
* \param format the source data format
*/
void
_mesa_unpack_uint_24_8_depth_stencil_row(mesa_format format, uint32_t n,
const void *src, uint32_t *dst)
{
switch (format) {
case MESA_FORMAT_S8_UINT_Z24_UNORM:
unpack_uint_24_8_depth_stencil_S8_UINT_Z24_UNORM(src, dst, n);
break;
case MESA_FORMAT_Z24_UNORM_S8_UINT:
unpack_uint_24_8_depth_stencil_Z24_UNORM_S8_UINT(src, dst, n);
break;
case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
unpack_uint_24_8_depth_stencil_Z32_S8X24(src, dst, n);
break;
default:
unreachable("bad format %s in _mesa_unpack_uint_24_8_depth_stencil_row");
}
}
static void
unpack_float_32_uint_24_8_Z24_UNORM_S8_UINT(const uint32_t *src,
uint32_t *dst, uint32_t n)
{
uint32_t i;
struct z32f_x24s8 *d = (struct z32f_x24s8 *) dst;
const double scale = 1.0 / (double) 0xffffff;
for (i = 0; i < n; i++) {
const uint32_t z24 = src[i] & 0xffffff;
d[i].z = z24 * scale;
d[i].x24s8 = src[i] >> 24;
assert(d[i].z >= 0.0f);
assert(d[i].z <= 1.0f);
}
}
static void
unpack_float_32_uint_24_8_Z32_FLOAT_S8X24_UINT(const uint32_t *src,
uint32_t *dst, uint32_t n)
{
memcpy(dst, src, n * sizeof(struct z32f_x24s8));
}
static void
unpack_float_32_uint_24_8_S8_UINT_Z24_UNORM(const uint32_t *src,
uint32_t *dst, uint32_t n)
{
uint32_t i;
struct z32f_x24s8 *d = (struct z32f_x24s8 *) dst;
const double scale = 1.0 / (double) 0xffffff;
for (i = 0; i < n; i++) {
const uint32_t z24 = src[i] >> 8;
d[i].z = z24 * scale;
d[i].x24s8 = src[i] & 0xff;
assert(d[i].z >= 0.0f);
assert(d[i].z <= 1.0f);
}
}
/**
* Unpack depth/stencil returning as GL_FLOAT_32_UNSIGNED_INT_24_8_REV.
* \param format the source data format
*
* In GL_FLOAT_32_UNSIGNED_INT_24_8_REV lower 4 bytes contain float
* component and higher 4 bytes contain packed 24-bit and 8-bit
* components.
*
* 31 30 29 28 ... 4 3 2 1 0 31 30 29 ... 9 8 7 6 5 ... 2 1 0
* +-------------------------+ +--------------------------------+
* | Float Component | | Unused | 8 bit stencil |
* +-------------------------+ +--------------------------------+
* lower 4 bytes higher 4 bytes
*/
void
_mesa_unpack_float_32_uint_24_8_depth_stencil_row(mesa_format format, uint32_t n,
const void *src, uint32_t *dst)
{
switch (format) {
case MESA_FORMAT_S8_UINT_Z24_UNORM:
unpack_float_32_uint_24_8_S8_UINT_Z24_UNORM(src, dst, n);
break;
case MESA_FORMAT_Z24_UNORM_S8_UINT:
unpack_float_32_uint_24_8_Z24_UNORM_S8_UINT(src, dst, n);
break;
case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
unpack_float_32_uint_24_8_Z32_FLOAT_S8X24_UINT(src, dst, n);
break;
default:
unreachable("bad format %s in _mesa_unpack_uint_24_8_depth_stencil_row");
}
}
"""
template = Template(string, future_imports=['division']);
print(template.render(argv = argv[0:]))