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 "format_pack.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))
#define PACK(SRC, OFFSET, BITS) (((SRC) & MAX_UINT(BITS)) << (OFFSET))
<%
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)
%>
/* ubyte packing functions */
%for f in rgb_formats:
%if f.name in ('MESA_FORMAT_R9G9B9E5_FLOAT', 'MESA_FORMAT_R11G11B10_FLOAT'):
<% continue %>
%elif f.is_compressed():
<% continue %>
%endif
static inline void
pack_ubyte_${f.short_name()}(const GLubyte src[4], void *dst)
{
%for (i, c) in enumerate(f.channels):
<% i = f.swizzle.inverse()[i] %>
%if c.type == 'x':
<% continue %>
%endif
${c.datatype()} ${c.name} =
%if not f.is_normalized() and f.is_int():
%if c.type == parser.SIGNED:
_mesa_unsigned_to_signed(src[${i}], ${c.size});
%else:
_mesa_unsigned_to_unsigned(src[${i}], ${c.size});
%endif
%elif c.type == parser.UNSIGNED:
%if f.colorspace == 'srgb' and c.name in 'rgb':
<% assert c.size == 8 %>
util_format_linear_to_srgb_8unorm(src[${i}]);
%else:
_mesa_unorm_to_unorm(src[${i}], 8, ${c.size});
%endif
%elif c.type == parser.SIGNED:
_mesa_unorm_to_snorm(src[${i}], 8, ${c.size});
%elif c.type == parser.FLOAT:
%if c.size == 32:
_mesa_unorm_to_float(src[${i}], 8);
%elif c.size == 16:
_mesa_unorm_to_half(src[${i}], 8);
%else:
<% assert False %>
%endif
%else:
<% assert False %>
%endif
%endfor
%if f.layout == parser.ARRAY:
${f.datatype()} *d = (${f.datatype()} *)dst;
%for (i, c) in enumerate(f.channels):
%if c.type == 'x':
<% continue %>
%endif
d[${i}] = ${c.name};
%endfor
%elif f.layout == parser.PACKED:
${f.datatype()} d = 0;
%for (i, c) in enumerate(f.channels):
%if c.type == 'x':
<% continue %>
%endif
d |= PACK(${c.name}, ${c.shift}, ${c.size});
%endfor
(*(${f.datatype()} *)dst) = d;
%else:
<% assert False %>
%endif
}
%endfor
static inline void
pack_ubyte_r9g9b9e5_float(const GLubyte src[4], void *dst)
{
GLuint *d = (GLuint *) dst;
GLfloat rgb[3];
rgb[0] = _mesa_unorm_to_float(src[RCOMP], 8);
rgb[1] = _mesa_unorm_to_float(src[GCOMP], 8);
rgb[2] = _mesa_unorm_to_float(src[BCOMP], 8);
*d = float3_to_rgb9e5(rgb);
}
static inline void
pack_ubyte_r11g11b10_float(const GLubyte src[4], void *dst)
{
GLuint *d = (GLuint *) dst;
GLfloat rgb[3];
rgb[0] = _mesa_unorm_to_float(src[RCOMP], 8);
rgb[1] = _mesa_unorm_to_float(src[GCOMP], 8);
rgb[2] = _mesa_unorm_to_float(src[BCOMP], 8);
*d = float3_to_r11g11b10f(rgb);
}
/* uint packing functions */
%for f in rgb_formats:
%if not f.is_int():
<% continue %>
%elif f.is_normalized():
<% continue %>
%elif f.is_compressed():
<% continue %>
%endif
static inline void
pack_uint_${f.short_name()}(const GLuint src[4], void *dst)
{
%for (i, c) in enumerate(f.channels):
<% i = f.swizzle.inverse()[i] %>
%if c.type == 'x':
<% continue %>
%endif
${c.datatype()} ${c.name} =
%if c.type == parser.SIGNED:
_mesa_signed_to_signed(src[${i}], ${c.size});
%elif c.type == parser.UNSIGNED:
_mesa_unsigned_to_unsigned(src[${i}], ${c.size});
%else:
assert(!"Invalid type: only integer types are allowed");
%endif
%endfor
%if f.layout == parser.ARRAY:
${f.datatype()} *d = (${f.datatype()} *)dst;
%for (i, c) in enumerate(f.channels):
%if c.type == 'x':
<% continue %>
%endif
d[${i}] = ${c.name};
%endfor
%elif f.layout == parser.PACKED:
${f.datatype()} d = 0;
%for (i, c) in enumerate(f.channels):
%if c.type == 'x':
<% continue %>
%endif
d |= PACK(${c.name}, ${c.shift}, ${c.size});
%endfor
(*(${f.datatype()} *)dst) = d;
%else:
<% assert False %>
%endif
}
%endfor
/* float packing 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
pack_float_${f.short_name()}(const GLfloat src[4], void *dst)
{
%for (i, c) in enumerate(f.channels):
<% i = f.swizzle.inverse()[i] %>
%if c.type == 'x':
<% continue %>
%endif
${c.datatype()} ${c.name} =
%if c.type == parser.UNSIGNED:
%if f.colorspace == 'srgb' and c.name in 'rgb':
<% assert c.size == 8 %>
util_format_linear_float_to_srgb_8unorm(src[${i}]);
%else:
_mesa_float_to_unorm(src[${i}], ${c.size});
%endif
%elif c.type == parser.SIGNED:
_mesa_float_to_snorm(src[${i}], ${c.size});
%elif c.type == parser.FLOAT:
%if c.size == 32:
src[${i}];
%elif c.size == 16:
_mesa_float_to_half(src[${i}]);
%else:
<% assert False %>
%endif
%else:
<% assert False %>
%endif
%endfor
%if f.layout == parser.ARRAY:
${f.datatype()} *d = (${f.datatype()} *)dst;
%for (i, c) in enumerate(f.channels):
%if c.type == 'x':
<% continue %>
%endif
d[${i}] = ${c.name};
%endfor
%elif f.layout == parser.PACKED:
${f.datatype()} d = 0;
%for (i, c) in enumerate(f.channels):
%if c.type == 'x':
<% continue %>
%endif
d |= PACK(${c.name}, ${c.shift}, ${c.size});
%endfor
(*(${f.datatype()} *)dst) = d;
%else:
<% assert False %>
%endif
}
%endfor
static inline void
pack_float_r9g9b9e5_float(const GLfloat src[4], void *dst)
{
GLuint *d = (GLuint *) dst;
*d = float3_to_rgb9e5(src);
}
static inline void
pack_float_r11g11b10_float(const GLfloat src[4], void *dst)
{
GLuint *d = (GLuint *) dst;
*d = float3_to_r11g11b10f(src);
}
/**
* Return a function that can pack a GLubyte rgba[4] color.
*/
gl_pack_ubyte_rgba_func
_mesa_get_pack_ubyte_rgba_function(mesa_format format)
{
switch (format) {
%for f in rgb_formats:
%if f.is_compressed():
<% continue %>
%endif
case ${f.name}:
return pack_ubyte_${f.short_name()};
%endfor
default:
return NULL;
}
}
/**
* Return a function that can pack a GLfloat rgba[4] color.
*/
gl_pack_float_rgba_func
_mesa_get_pack_float_rgba_function(mesa_format format)
{
switch (format) {
%for f in rgb_formats:
%if f.is_compressed():
<% continue %>
%elif f.is_int() and not f.is_normalized():
<% continue %>
%endif
case ${f.name}:
return pack_float_${f.short_name()};
%endfor
default:
return NULL;
}
}
/**
* Pack a row of GLubyte rgba[4] values to the destination.
*/
void
_mesa_pack_ubyte_rgba_row(mesa_format format, GLuint n,
const GLubyte src[][4], void *dst)
{
GLuint i;
GLubyte *d = dst;
switch (format) {
%for f in rgb_formats:
%if f.is_compressed():
<% continue %>
%endif
case ${f.name}:
for (i = 0; i < n; ++i) {
pack_ubyte_${f.short_name()}(src[i], d);
d += ${f.block_size() / 8};
}
break;
%endfor
default:
assert(!"Invalid format");
}
}
/**
* Pack a row of GLuint rgba[4] values to the destination.
*/
void
_mesa_pack_uint_rgba_row(mesa_format format, GLuint n,
const GLuint src[][4], void *dst)
{
GLuint i;
GLubyte *d = dst;
switch (format) {
%for f in rgb_formats:
%if not f.is_int():
<% continue %>
%elif f.is_normalized():
<% continue %>
%elif f.is_compressed():
<% continue %>
%endif
case ${f.name}:
for (i = 0; i < n; ++i) {
pack_uint_${f.short_name()}(src[i], d);
d += ${f.block_size() / 8};
}
break;
%endfor
default:
assert(!"Invalid format");
}
}
/**
* Pack a row of GLfloat rgba[4] values to the destination.
*/
void
_mesa_pack_float_rgba_row(mesa_format format, GLuint n,
const GLfloat src[][4], void *dst)
{
GLuint i;
GLubyte *d = dst;
switch (format) {
%for f in rgb_formats:
%if f.is_compressed():
<% continue %>
%elif f.is_int() and not f.is_normalized():
<% continue %>
%endif
case ${f.name}:
for (i = 0; i < n; ++i) {
pack_float_${f.short_name()}(src[i], d);
d += ${f.block_size() / 8};
}
break;
%endfor
default:
assert(!"Invalid format");
}
}
/**
* Pack a 2D image of ubyte RGBA pixels in the given format.
* \param srcRowStride source image row stride in bytes
* \param dstRowStride destination image row stride in bytes
*/
void
_mesa_pack_ubyte_rgba_rect(mesa_format format, GLuint width, GLuint height,
const GLubyte *src, GLint srcRowStride,
void *dst, GLint dstRowStride)
{
GLubyte *dstUB = dst;
GLuint i;
if (srcRowStride == width * 4 * sizeof(GLubyte) &&
dstRowStride == _mesa_format_row_stride(format, width)) {
/* do whole image at once */
_mesa_pack_ubyte_rgba_row(format, width * height,
(const GLubyte (*)[4]) src, dst);
}
else {
/* row by row */
for (i = 0; i < height; i++) {
_mesa_pack_ubyte_rgba_row(format, width,
(const GLubyte (*)[4]) src, dstUB);
src += srcRowStride;
dstUB += dstRowStride;
}
}
}
/** Helper struct for MESA_FORMAT_Z32_FLOAT_S8X24_UINT */
struct z32f_x24s8
{
float z;
uint32_t x24s8;
};
/**
** Pack float Z pixels
**/
static void
pack_float_S8_UINT_Z24_UNORM(const GLfloat *src, void *dst)
{
/* don't disturb the stencil values */
GLuint *d = ((GLuint *) dst);
const GLdouble scale = (GLdouble) 0xffffff;
GLuint s = *d & 0xff;
GLuint z = (GLuint) (*src * scale);
assert(z <= 0xffffff);
*d = (z << 8) | s;
}
static void
pack_float_Z24_UNORM_S8_UINT(const GLfloat *src, void *dst)
{
/* don't disturb the stencil values */
GLuint *d = ((GLuint *) dst);
const GLdouble scale = (GLdouble) 0xffffff;
GLuint s = *d & 0xff000000;
GLuint z = (GLuint) (*src * scale);
assert(z <= 0xffffff);
*d = s | z;
}
static void
pack_float_Z_UNORM16(const GLfloat *src, void *dst)
{
GLushort *d = ((GLushort *) dst);
const GLfloat scale = (GLfloat) 0xffff;
*d = (GLushort) (*src * scale);
}
static void
pack_float_Z_UNORM32(const GLfloat *src, void *dst)
{
GLuint *d = ((GLuint *) dst);
const GLdouble scale = (GLdouble) 0xffffffff;
*d = (GLuint) (*src * scale);
}
static void
pack_float_Z_FLOAT32(const GLfloat *src, void *dst)
{
GLfloat *d = (GLfloat *) dst;
*d = *src;
}
gl_pack_float_z_func
_mesa_get_pack_float_z_func(mesa_format format)
{
switch (format) {
case MESA_FORMAT_S8_UINT_Z24_UNORM:
case MESA_FORMAT_X8_UINT_Z24_UNORM:
return pack_float_S8_UINT_Z24_UNORM;
case MESA_FORMAT_Z24_UNORM_S8_UINT:
case MESA_FORMAT_Z24_UNORM_X8_UINT:
return pack_float_Z24_UNORM_S8_UINT;
case MESA_FORMAT_Z_UNORM16:
return pack_float_Z_UNORM16;
case MESA_FORMAT_Z_UNORM32:
return pack_float_Z_UNORM32;
case MESA_FORMAT_Z_FLOAT32:
case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
return pack_float_Z_FLOAT32;
default:
_mesa_problem(NULL,
"unexpected format in _mesa_get_pack_float_z_func()");
return NULL;
}
}
/**
** Pack uint Z pixels. The incoming src value is always in
** the range [0, 2^32-1].
**/
static void
pack_uint_S8_UINT_Z24_UNORM(const GLuint *src, void *dst)
{
/* don't disturb the stencil values */
GLuint *d = ((GLuint *) dst);
GLuint s = *d & 0xff;
GLuint z = *src & 0xffffff00;
*d = z | s;
}
static void
pack_uint_Z24_UNORM_S8_UINT(const GLuint *src, void *dst)
{
/* don't disturb the stencil values */
GLuint *d = ((GLuint *) dst);
GLuint s = *d & 0xff000000;
GLuint z = *src >> 8;
*d = s | z;
}
static void
pack_uint_Z_UNORM16(const GLuint *src, void *dst)
{
GLushort *d = ((GLushort *) dst);
*d = *src >> 16;
}
static void
pack_uint_Z_UNORM32(const GLuint *src, void *dst)
{
GLuint *d = ((GLuint *) dst);
*d = *src;
}
static void
pack_uint_Z_FLOAT32(const GLuint *src, void *dst)
{
GLuint *d = ((GLuint *) dst);
const GLdouble scale = 1.0 / (GLdouble) 0xffffffff;
*d = (GLuint) (*src * scale);
assert(*d >= 0.0f);
assert(*d <= 1.0f);
}
static void
pack_uint_Z_FLOAT32_X24S8(const GLuint *src, void *dst)
{
GLfloat *d = ((GLfloat *) dst);
const GLdouble scale = 1.0 / (GLdouble) 0xffffffff;
*d = (GLfloat) (*src * scale);
assert(*d >= 0.0f);
assert(*d <= 1.0f);
}
gl_pack_uint_z_func
_mesa_get_pack_uint_z_func(mesa_format format)
{
switch (format) {
case MESA_FORMAT_S8_UINT_Z24_UNORM:
case MESA_FORMAT_X8_UINT_Z24_UNORM:
return pack_uint_S8_UINT_Z24_UNORM;
case MESA_FORMAT_Z24_UNORM_S8_UINT:
case MESA_FORMAT_Z24_UNORM_X8_UINT:
return pack_uint_Z24_UNORM_S8_UINT;
case MESA_FORMAT_Z_UNORM16:
return pack_uint_Z_UNORM16;
case MESA_FORMAT_Z_UNORM32:
return pack_uint_Z_UNORM32;
case MESA_FORMAT_Z_FLOAT32:
return pack_uint_Z_FLOAT32;
case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
return pack_uint_Z_FLOAT32_X24S8;
default:
_mesa_problem(NULL, "unexpected format in _mesa_get_pack_uint_z_func()");
return NULL;
}
}
/**
** Pack ubyte stencil pixels
**/
static void
pack_ubyte_stencil_Z24_S8(const GLubyte *src, void *dst)
{
/* don't disturb the Z values */
GLuint *d = ((GLuint *) dst);
GLuint s = *src;
GLuint z = *d & 0xffffff00;
*d = z | s;
}
static void
pack_ubyte_stencil_S8_Z24(const GLubyte *src, void *dst)
{
/* don't disturb the Z values */
GLuint *d = ((GLuint *) dst);
GLuint s = *src << 24;
GLuint z = *d & 0xffffff;
*d = s | z;
}
static void
pack_ubyte_stencil_S8(const GLubyte *src, void *dst)
{
GLubyte *d = (GLubyte *) dst;
*d = *src;
}
static void
pack_ubyte_stencil_Z32_FLOAT_X24S8(const GLubyte *src, void *dst)
{
GLfloat *d = ((GLfloat *) dst);
d[1] = *src;
}
gl_pack_ubyte_stencil_func
_mesa_get_pack_ubyte_stencil_func(mesa_format format)
{
switch (format) {
case MESA_FORMAT_S8_UINT_Z24_UNORM:
return pack_ubyte_stencil_Z24_S8;
case MESA_FORMAT_Z24_UNORM_S8_UINT:
return pack_ubyte_stencil_S8_Z24;
case MESA_FORMAT_S_UINT8:
return pack_ubyte_stencil_S8;
case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
return pack_ubyte_stencil_Z32_FLOAT_X24S8;
default:
_mesa_problem(NULL,
"unexpected format in _mesa_pack_ubyte_stencil_func()");
return NULL;
}
}
void
_mesa_pack_float_z_row(mesa_format format, GLuint n,
const GLfloat *src, void *dst)
{
switch (format) {
case MESA_FORMAT_S8_UINT_Z24_UNORM:
case MESA_FORMAT_X8_UINT_Z24_UNORM:
{
/* don't disturb the stencil values */
GLuint *d = ((GLuint *) dst);
const GLdouble scale = (GLdouble) 0xffffff;
GLuint i;
for (i = 0; i < n; i++) {
GLuint s = d[i] & 0xff;
GLuint z = (GLuint) (src[i] * scale);
assert(z <= 0xffffff);
d[i] = (z << 8) | s;
}
}
break;
case MESA_FORMAT_Z24_UNORM_S8_UINT:
case MESA_FORMAT_Z24_UNORM_X8_UINT:
{
/* don't disturb the stencil values */
GLuint *d = ((GLuint *) dst);
const GLdouble scale = (GLdouble) 0xffffff;
GLuint i;
for (i = 0; i < n; i++) {
GLuint s = d[i] & 0xff000000;
GLuint z = (GLuint) (src[i] * scale);
assert(z <= 0xffffff);
d[i] = s | z;
}
}
break;
case MESA_FORMAT_Z_UNORM16:
{
GLushort *d = ((GLushort *) dst);
const GLfloat scale = (GLfloat) 0xffff;
GLuint i;
for (i = 0; i < n; i++) {
d[i] = (GLushort) (src[i] * scale);
}
}
break;
case MESA_FORMAT_Z_UNORM32:
{
GLuint *d = ((GLuint *) dst);
const GLdouble scale = (GLdouble) 0xffffffff;
GLuint i;
for (i = 0; i < n; i++) {
d[i] = (GLuint) (src[i] * scale);
}
}
break;
case MESA_FORMAT_Z_FLOAT32:
memcpy(dst, src, n * sizeof(GLfloat));
break;
case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
{
struct z32f_x24s8 *d = (struct z32f_x24s8 *) dst;
GLuint i;
for (i = 0; i < n; i++) {
d[i].z = src[i];
}
}
break;
default:
_mesa_problem(NULL, "unexpected format in _mesa_pack_float_z_row()");
}
}
/**
* The incoming Z values are always in the range [0, 0xffffffff].
*/
void
_mesa_pack_uint_z_row(mesa_format format, GLuint n,
const GLuint *src, void *dst)
{
switch (format) {
case MESA_FORMAT_S8_UINT_Z24_UNORM:
case MESA_FORMAT_X8_UINT_Z24_UNORM:
{
/* don't disturb the stencil values */
GLuint *d = ((GLuint *) dst);
GLuint i;
for (i = 0; i < n; i++) {
GLuint s = d[i] & 0xff;
GLuint z = src[i] & 0xffffff00;
d[i] = z | s;
}
}
break;
case MESA_FORMAT_Z24_UNORM_S8_UINT:
case MESA_FORMAT_Z24_UNORM_X8_UINT:
{
/* don't disturb the stencil values */
GLuint *d = ((GLuint *) dst);
GLuint i;
for (i = 0; i < n; i++) {
GLuint s = d[i] & 0xff000000;
GLuint z = src[i] >> 8;
d[i] = s | z;
}
}
break;
case MESA_FORMAT_Z_UNORM16:
{
GLushort *d = ((GLushort *) dst);
GLuint i;
for (i = 0; i < n; i++) {
d[i] = src[i] >> 16;
}
}
break;
case MESA_FORMAT_Z_UNORM32:
memcpy(dst, src, n * sizeof(GLfloat));
break;
case MESA_FORMAT_Z_FLOAT32:
{
GLuint *d = ((GLuint *) dst);
const GLdouble scale = 1.0 / (GLdouble) 0xffffffff;
GLuint i;
for (i = 0; i < n; i++) {
d[i] = (GLuint) (src[i] * scale);
assert(d[i] >= 0.0f);
assert(d[i] <= 1.0f);
}
}
break;
case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
{
struct z32f_x24s8 *d = (struct z32f_x24s8 *) dst;
const GLdouble scale = 1.0 / (GLdouble) 0xffffffff;
GLuint i;
for (i = 0; i < n; i++) {
d[i].z = (GLfloat) (src[i] * scale);
assert(d[i].z >= 0.0f);
assert(d[i].z <= 1.0f);
}
}
break;
default:
_mesa_problem(NULL, "unexpected format in _mesa_pack_uint_z_row()");
}
}
void
_mesa_pack_ubyte_stencil_row(mesa_format format, GLuint n,
const GLubyte *src, void *dst)
{
switch (format) {
case MESA_FORMAT_S8_UINT_Z24_UNORM:
{
/* don't disturb the Z values */
GLuint *d = ((GLuint *) dst);
GLuint i;
for (i = 0; i < n; i++) {
GLuint s = src[i];
GLuint z = d[i] & 0xffffff00;
d[i] = z | s;
}
}
break;
case MESA_FORMAT_Z24_UNORM_S8_UINT:
{
/* don't disturb the Z values */
GLuint *d = ((GLuint *) dst);
GLuint i;
for (i = 0; i < n; i++) {
GLuint s = src[i] << 24;
GLuint z = d[i] & 0xffffff;
d[i] = s | z;
}
}
break;
case MESA_FORMAT_S_UINT8:
memcpy(dst, src, n * sizeof(GLubyte));
break;
case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
{
struct z32f_x24s8 *d = (struct z32f_x24s8 *) dst;
GLuint i;
for (i = 0; i < n; i++) {
d[i].x24s8 = src[i];
}
}
break;
default:
_mesa_problem(NULL, "unexpected format in _mesa_pack_ubyte_stencil_row()");
}
}
/**
* Incoming Z/stencil values are always in uint_24_8 format.
*/
void
_mesa_pack_uint_24_8_depth_stencil_row(mesa_format format, GLuint n,
const GLuint *src, void *dst)
{
switch (format) {
case MESA_FORMAT_S8_UINT_Z24_UNORM:
memcpy(dst, src, n * sizeof(GLuint));
break;
case MESA_FORMAT_Z24_UNORM_S8_UINT:
{
GLuint *d = ((GLuint *) dst);
GLuint i;
for (i = 0; i < n; i++) {
GLuint s = src[i] << 24;
GLuint z = src[i] >> 8;
d[i] = s | z;
}
}
break;
case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
{
const GLdouble scale = 1.0 / (GLdouble) 0xffffff;
struct z32f_x24s8 *d = (struct z32f_x24s8 *) dst;
GLuint i;
for (i = 0; i < n; i++) {
GLfloat z = (GLfloat) ((src[i] >> 8) * scale);
d[i].z = z;
d[i].x24s8 = src[i];
}
}
break;
default:
_mesa_problem(NULL, "bad format %s in _mesa_pack_ubyte_s_row",
_mesa_get_format_name(format));
return;
}
}
/**
* Convert a boolean color mask to a packed color where each channel of
* the packed value at dst will be 0 or ~0 depending on the colorMask.
*/
void
_mesa_pack_colormask(mesa_format format, const GLubyte colorMask[4], void *dst)
{
GLfloat maskColor[4];
switch (_mesa_get_format_datatype(format)) {
case GL_UNSIGNED_NORMALIZED:
/* simple: 1.0 will convert to ~0 in the right bit positions */
maskColor[0] = colorMask[0] ? 1.0f : 0.0f;
maskColor[1] = colorMask[1] ? 1.0f : 0.0f;
maskColor[2] = colorMask[2] ? 1.0f : 0.0f;
maskColor[3] = colorMask[3] ? 1.0f : 0.0f;
_mesa_pack_float_rgba_row(format, 1,
(const GLfloat (*)[4]) maskColor, dst);
break;
case GL_SIGNED_NORMALIZED:
case GL_FLOAT:
/* These formats are harder because it's hard to know the floating
* point values that will convert to ~0 for each color channel's bits.
* This solution just generates a non-zero value for each color channel
* then fixes up the non-zero values to be ~0.
* Note: we'll need to add special case code if we ever have to deal
* with formats with unequal color channel sizes, like R11_G11_B10.
* We issue a warning below for channel sizes other than 8,16,32.
*/
{
GLuint bits = _mesa_get_format_max_bits(format); /* bits per chan */
GLuint bytes = _mesa_get_format_bytes(format);
GLuint i;
/* this should put non-zero values into the channels of dst */
maskColor[0] = colorMask[0] ? -1.0f : 0.0f;
maskColor[1] = colorMask[1] ? -1.0f : 0.0f;
maskColor[2] = colorMask[2] ? -1.0f : 0.0f;
maskColor[3] = colorMask[3] ? -1.0f : 0.0f;
_mesa_pack_float_rgba_row(format, 1,
(const GLfloat (*)[4]) maskColor, dst);
/* fix-up the dst channels by converting non-zero values to ~0 */
if (bits == 8) {
GLubyte *d = (GLubyte *) dst;
for (i = 0; i < bytes; i++) {
d[i] = d[i] ? 0xff : 0x0;
}
}
else if (bits == 16) {
GLushort *d = (GLushort *) dst;
for (i = 0; i < bytes / 2; i++) {
d[i] = d[i] ? 0xffff : 0x0;
}
}
else if (bits == 32) {
GLuint *d = (GLuint *) dst;
for (i = 0; i < bytes / 4; i++) {
d[i] = d[i] ? 0xffffffffU : 0x0;
}
}
else {
_mesa_problem(NULL, "unexpected size in _mesa_pack_colormask()");
return;
}
}
break;
default:
_mesa_problem(NULL, "unexpected format data type in gen_color_mask()");
return;
}
}
"""
template = Template(string);
print template.render(argv = argv[0:])