aboutsummaryrefslogtreecommitdiff
path: root/mesalib/src/mesa/main/format_pack.py
diff options
context:
space:
mode:
Diffstat (limited to 'mesalib/src/mesa/main/format_pack.py')
-rw-r--r--mesalib/src/mesa/main/format_pack.py1004
1 files changed, 1004 insertions, 0 deletions
diff --git a/mesalib/src/mesa/main/format_pack.py b/mesalib/src/mesa/main/format_pack.py
new file mode 100644
index 000000000..f141da83c
--- /dev/null
+++ b/mesalib/src/mesa/main/format_pack.py
@@ -0,0 +1,1004 @@
+#!/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()} ${c.name} =
+ %if not f.is_normalized() and f.is_int():
+ %if c.type == parser.SIGNED:
+ _mesa_unsigned_to_signed(src[${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:])
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-02 03:49:09 +0000