<div dir="ltr"> <div class="gmail_extra"> <div class="gmail_quote">On Tue, Dec 9, 2014 at 4:06 AM, Iago Toral Quiroga <<a href="mailto:itoral@igalia.com" target="_blank">itoral@igalia.com</a>> wrote: <div> </div><div>[snip] </div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> new file mode 100644 index 0000000..5f6809e --- /dev/null +++ b/src/mesa/main/format_pack.py @@ -0,0 +1,907 @@ +#!/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 "colormac.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 <a href="http://f.name" target="_blank">f.name</a> == '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 <a href="http://f.name" target="_blank">f.name</a> 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()} ${<a href="http://c.name" target="_blank">c.name</a>} = + %if c.type == parser.UNSIGNED: + %if f.colorspace == 'srgb' and <a href="http://c.name" target="_blank">c.name</a> in 'rgb': + util_format_linear_to_srgb_8unorm(src[${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}] = ${<a href="http://c.name" target="_blank">c.name</a>}; + %endfor + %elif f.layout == parser.PACKED: + ${f.datatype()} d = 0; + %for (i, c) in enumerate(f.channels): + %if c.type == 'x': + <% continue %> + %endif + d |= PACK(${<a href="http://c.name" target="_blank">c.name</a>}, ${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); +} + + +/* float packing functions */ + +%for f in rgb_formats: + %if <a href="http://f.name" target="_blank">f.name</a> in ('MESA_FORMAT_R9G9B9E5_FLOAT', 'MESA_FORMAT_R11G11B10_FLOAT'): + <% 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()} ${<a href="http://c.name" target="_blank">c.name</a>} = + %if c.type == parser.UNSIGNED: + %if f.colorspace == 'srgb' and <a href="http://c.name" target="_blank">c.name</a> in 'rgb': + <% assert c.size == 8 %> + util_format_linear_float_to_srgb_8unorm(src[${i}]); + %else: + _mesa_float_to_unorm(src[${i}], ${c.size}); + %endif + %elif c.type == parser.SIGNED: + _mesa_float_to_snorm(src[${i}], ${c.size}); </blockquote><div> Do we need to handle non-normalized formats here? We should either handle them properly (including clamping, etc.) or not generate the functions for them at all. IIRC, I think we need them. </div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> + %elif c.type == parser.FLOAT: + %if c.size == 32: + src[${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}] = ${<a href="http://c.name" target="_blank">c.name</a>}; + %endfor + %elif f.layout == parser.PACKED: + ${f.datatype()} d = 0; + %for (i, c) in enumerate(f.channels): + %if c.type == 'x': + <% continue %> + %endif + d |= PACK(${<a href="http://c.name" target="_blank">c.name</a>}, ${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 ${<a href="http://f.name" target="_blank">f.name</a>}: + return pack_ubyte_${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 %> + %endif + + case ${<a href="http://f.name" target="_blank">f.name</a>}: + return pack_float_${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 ${<a href="http://f.name" target="_blank">f.name</a>}: + for (i = 0; i < n; ++i) { + pack_ubyte_${f.short_name()}(src[i], d); + d += ${f.block_size() / 8}; + } + break; +%endfor + default: + assert(!"Invalid format"); + } +} + +/** + * Pack a row of 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 %> + %endif + + case ${<a href="http://f.name" target="_blank">f.name</a>}: + for (i = 0; i < n; ++i) { + pack_float_${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:]) \ No newline at end of file diff --git a/src/mesa/main/format_parser.py b/src/mesa/main/format_parser.py index 5e45c74..522bce3 100755 --- a/src/mesa/main/format_parser.py +++ b/src/mesa/main/format_parser.py @@ -102,6 +102,10 @@ class Channel: """Returns true if the size of this channel is a power of two.""" return is_power_of_two(self.size) + def datatype(self): + """Returns the datatype corresponding to a channel type and size""" + return _get_datatype(self.type, self.size) + class Swizzle: """Describes a swizzle operation. @@ -469,6 +473,49 @@ class Format: return channel return None + def datatype(self): + """Returns the datatype corresponding to a format's channel type and size""" + if self.layout == PACKED: + if self.block_size() == 8: + return 'uint8_t' + if self.block_size() == 16: + return 'uint16_t' + if self.block_size() == 32: + return 'uint32_t' + else: + assert False + else: + return _get_datatype(self.channel_type(), self.channel_size()) + +def _get_datatype(type, size): + if type == FLOAT: + if size == 32: + return 'float' + elif size == 16: + return 'uint16_t' + else: + assert False + elif type == UNSIGNED: + if size <= 8: + return 'uint8_t' + elif size <= 16: + return 'uint16_t' + elif size <= 32: + return 'uint32_t' + else: + assert False + elif type == SIGNED: + if size <= 8: + return 'int8_t' + elif size <= 16: + return 'int16_t' + elif size <= 32: + return 'int32_t' + else: + assert False + else: + assert False + def _parse_channels(fields, layout, colorspace, swizzle): channels = [] for field in fields: -- 1.9.1 _______________________________________________ mesa-dev mailing list <a href="mailto:mesa-dev@lists.freedesktop.org" target="_blank">mesa-dev@lists.freedesktop.org</a> <a href="http://lists.freedesktop.org/mailman/listinfo/mesa-dev" target="_blank">http://lists.freedesktop.org/mailman/listinfo/mesa-dev</a> </blockquote></div> </div></div>