0,0 → 1,1003 |
#!/usr/bin/env python |
|
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 "../../gallium/auxiliary/util/u_format_rgb9e5.h" |
#include "../../gallium/auxiliary/util/u_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:]) |