[Mesa-dev] [PATCH v3 14/24] mesa: Autogenerate most of format_pack.c
Jason Ekstrand
jason at jlekstrand.net
Thu Dec 11 11:55:10 PST 2014
On Tue, Dec 9, 2014 at 4:06 AM, Iago Toral Quiroga <itoral at igalia.com>
wrote:
[snip]
> 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 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()} ${c.name} =
> + %if c.type == parser.UNSIGNED:
> + %if f.colorspace == 'srgb' and c.name in 'rgb':
> + util_format_linear_to_srgb_8unorm(src[${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}] = ${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);
> +}
> +
> +
> +/* float 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_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}], ${c.size});
>
Do we need to handle non-normalized formats here? We should either handle
them properly (including clamping, etc.) or not generate the functions for
them at all. IIRC, I think we need them.
> + %elif c.type == parser.FLOAT:
> + %if c.size == 32:
> + src[${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 %>
> + %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 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 ${f.name}:
> + for (i = 0; i < n; ++i) {
> + pack_float_${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:])
> \ 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
> mesa-dev at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/mesa-dev
>
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