[Mesa-dev] [PATCH v3 14/24] mesa: Autogenerate most of format_pack.c
Jason Ekstrand
jason at jlekstrand.net
Wed Jan 7 06:50:42 PST 2015
On Jan 7, 2015 4:45 AM, "Samuel Iglesias Gonsálvez" <siglesias at igalia.com>
wrote:
>
> On Monday, December 15, 2014 12:30:27 PM Samuel Iglesias Gonsálvez wrote:
> > On Thursday, December 11, 2014 11:55:10 AM Jason Ekstrand wrote:
> > > 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.
> >
> > I will check if we need them and update the patch accordingly.
> >
>
> Hello Jason,
>
> I checked OpenGL 3.3 spec to see what it says regarding this case and this
> float to non-normalized integer conversion (and viceversa) is not
supported.
>
> Section 3.8.3 Texture Image Specification:
>
> [...]
> The error INVALID_OPERATION is generated if the internal format is
integer and
> format is not one of the integer formats listed in table 3.3; if the
internal
> format is
> not integer and format is an integer format; or if format is an integer
format
> and type
> is FLOAT, HALF_FLOAT, UNSIGNED_INT_10F_11F_11F_REV, or UNSIGNED_-
> INT_5_9_9_9_REV.
>
>
> Section 4.3.1 Reading Pixels:
>
> Obtaining Pixels from the Framebuffer
> [...]
> If format is an integer format and the color buffer is not an integer
format;
> if the color buffer is an integer format and format is not an integer
format;
> or if format is an integer format and type is FLOAT or HALF_FLOAT, the
error
> INVALID_OPERATION occurs.
>
> Both quotes are based on GL_EXT_texture_integer extension which is part of
> OpenGL 3.3 core profile. More info here [0].
>
> We even need to modify next patch "mesa: Autogenerate format_unpack.c" to
> don't autogenerate the respective unpacking functions which, by the way,
are
> currently wrong because we didn't take into account the non-normalized
case...
> so they use normalized integer code for non-normalized integer formats :-(
>
> We did not notice this latter error before because piglit did not test
those
> functions. So that patch would need another review too.
>
> We are going to send a new version of the patches with all these issues
> addressed (including the rest of v3's feedback), once you confirmed that
I am
> not missing something.
That all sounds correct to me.
--Jason
>
> Thanks,
>
> Sam
>
> [0] https://www.opengl.org/registry/specs/EXT/texture_integer.txt
>
> >
> > > > + %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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