--- /dev/null
+#!/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_unpack.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))
+
+<%
+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)
+%>
+
+/* float unpacking 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
+unpack_float_${f.short_name()}(const void *void_src, GLfloat dst[4])
+{
+ ${f.datatype()} *src = (${f.datatype()} *)void_src;
+ %if f.layout == parser.PACKED:
+ %for c in f.channels:
+ %if c.type != 'x':
+ ${c.datatype()} ${c.name} = UNPACK(*src, ${c.shift}, ${c.size});
+ %endif
+ %endfor
+ %elif f.layout == parser.ARRAY:
+ %for (i, c) in enumerate(f.channels):
+ %if c.type != 'x':
+ ${c.datatype()} ${c.name} = src[${i}];
+ %endif
+ %endfor
+ %else:
+ <% assert False %>
+ %endif
+
+ %for i in range(4):
+ <% s = f.swizzle[i] %>
+ %if 0 <= s and s <= parser.Swizzle.SWIZZLE_W:
+ <% c = f.channels[s] %>
+ %if c.type == parser.UNSIGNED:
+ %if f.colorspace == 'srgb' and c.name in 'rgb':
+ <% assert c.size == 8 %>
+ dst[${i}] = util_format_srgb_8unorm_to_linear_float(${c.name});
+ %else:
+ dst[${i}] = _mesa_unorm_to_float(${c.name}, ${c.size});
+ %endif
+ %elif c.type == parser.SIGNED:
+ dst[${i}] = _mesa_snorm_to_float(${c.name}, ${c.size});
+ %elif c.type == parser.FLOAT:
+ %if c.size == 32:
+ dst[${i}] = ${c.name};
+ %elif c.size == 16:
+ dst[${i}] = _mesa_half_to_float(${c.name});
+ %else:
+ <% assert False %>
+ %endif
+ %else:
+ <% assert False %>
+ %endif
+ %elif s == parser.Swizzle.SWIZZLE_ZERO:
+ dst[${i}] = 0.0f;
+ %elif s == parser.Swizzle.SWIZZLE_ONE:
+ dst[${i}] = 1.0f;
+ %else:
+ <% assert False %>
+ %endif
+ %endfor
+}
+%endfor
+
+static void
+unpack_float_r9g9b9e5_float(const void *src, GLfloat dst[4])
+{
+ rgb9e5_to_float3(*(const GLuint *)src, dst);
+ dst[3] = 1.0f;
+}
+
+static void
+unpack_float_r11g11b10_float(const void *src, GLfloat dst[4])
+{
+ r11g11b10f_to_float3(*(const GLuint *)src, dst);
+ dst[3] = 1.0f;
+}
+
+static void
+unpack_float_ycbcr(const void *src, GLfloat dst[][4], GLuint n)
+{
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ const GLushort *src0 = ((const GLushort *) src) + i * 2; /* even */
+ const GLushort *src1 = src0 + 1; /* odd */
+ const GLubyte y0 = (*src0 >> 8) & 0xff; /* luminance */
+ const GLubyte cb = *src0 & 0xff; /* chroma U */
+ const GLubyte y1 = (*src1 >> 8) & 0xff; /* luminance */
+ const GLubyte cr = *src1 & 0xff; /* chroma V */
+ const GLubyte y = (i & 1) ? y1 : y0; /* choose even/odd luminance */
+ GLfloat r = 1.164F * (y - 16) + 1.596F * (cr - 128);
+ GLfloat g = 1.164F * (y - 16) - 0.813F * (cr - 128) - 0.391F * (cb - 128);
+ GLfloat b = 1.164F * (y - 16) + 2.018F * (cb - 128);
+ r *= (1.0F / 255.0F);
+ g *= (1.0F / 255.0F);
+ b *= (1.0F / 255.0F);
+ dst[i][0] = CLAMP(r, 0.0F, 1.0F);
+ dst[i][1] = CLAMP(g, 0.0F, 1.0F);
+ dst[i][2] = CLAMP(b, 0.0F, 1.0F);
+ dst[i][3] = 1.0F;
+ }
+}
+
+static void
+unpack_float_ycbcr_rev(const void *src, GLfloat dst[][4], GLuint n)
+{
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ const GLushort *src0 = ((const GLushort *) src) + i * 2; /* even */
+ const GLushort *src1 = src0 + 1; /* odd */
+ const GLubyte y0 = *src0 & 0xff; /* luminance */
+ const GLubyte cr = (*src0 >> 8) & 0xff; /* chroma V */
+ const GLubyte y1 = *src1 & 0xff; /* luminance */
+ const GLubyte cb = (*src1 >> 8) & 0xff; /* chroma U */
+ const GLubyte y = (i & 1) ? y1 : y0; /* choose even/odd luminance */
+ GLfloat r = 1.164F * (y - 16) + 1.596F * (cr - 128);
+ GLfloat g = 1.164F * (y - 16) - 0.813F * (cr - 128) - 0.391F * (cb - 128);
+ GLfloat b = 1.164F * (y - 16) + 2.018F * (cb - 128);
+ r *= (1.0F / 255.0F);
+ g *= (1.0F / 255.0F);
+ b *= (1.0F / 255.0F);
+ dst[i][0] = CLAMP(r, 0.0F, 1.0F);
+ dst[i][1] = CLAMP(g, 0.0F, 1.0F);
+ dst[i][2] = CLAMP(b, 0.0F, 1.0F);
+ dst[i][3] = 1.0F;
+ }
+}
+
+/* ubyte packing functions */
+
+%for f in rgb_formats:
+ %if not f.is_normalized():
+ <% continue %>
+ %endif
+
+static inline void
+unpack_ubyte_${f.short_name()}(const void *void_src, GLubyte dst[4])
+{
+ ${f.datatype()} *src = (${f.datatype()} *)void_src;
+ %if f.layout == parser.PACKED:
+ %for c in f.channels:
+ %if c.type != 'x':
+ ${c.datatype()} ${c.name} = UNPACK(*src, ${c.shift}, ${c.size});
+ %endif
+ %endfor
+ %elif f.layout == parser.ARRAY:
+ %for (i, c) in enumerate(f.channels):
+ %if c.type != 'x':
+ ${c.datatype()} ${c.name} = src[${i}];
+ %endif
+ %endfor
+ %else:
+ <% assert False %>
+ %endif
+
+ %for i in range(4):
+ <% s = f.swizzle[i] %>
+ %if 0 <= s and s <= parser.Swizzle.SWIZZLE_W:
+ <% c = f.channels[s] %>
+ %if c.type == parser.UNSIGNED:
+ %if f.colorspace == 'srgb' and c.name in 'rgb':
+ <% assert c.size == 8 %>
+ dst[${i}] = util_format_srgb_to_linear_8unorm(${c.name});
+ %else:
+ dst[${i}] = _mesa_unorm_to_unorm(${c.name}, ${c.size}, 8);
+ %endif
+ %elif c.type == parser.SIGNED:
+ dst[${i}] = _mesa_snorm_to_unorm(${c.name}, ${c.size}, 8);
+ %elif c.type == parser.FLOAT:
+ %if c.size == 32:
+ dst[${i}] = _mesa_float_to_unorm(${c.name}, 8);
+ %elif c.size == 16:
+ dst[${i}] = _mesa_half_to_unorm(${c.name}, 8);
+ %else:
+ <% assert False %>
+ %endif
+ %else:
+ <% assert False %>
+ %endif
+ %elif s == parser.Swizzle.SWIZZLE_ZERO:
+ dst[${i}] = 0;
+ %elif s == parser.Swizzle.SWIZZLE_ONE:
+ dst[${i}] = 255;
+ %else:
+ <% assert False %>
+ %endif
+ %endfor
+}
+%endfor
+
+
+/* integer packing functions */
+
+%for f in rgb_formats:
+ %if not f.is_int():
+ <% continue %>
+ %elif f.is_normalized():
+ <% continue %>
+ %endif
+
+static inline void
+unpack_int_${f.short_name()}(const void *void_src, GLuint dst[4])
+{
+ ${f.datatype()} *src = (${f.datatype()} *)void_src;
+ %if f.layout == parser.PACKED:
+ %for c in f.channels:
+ %if c.type != 'x':
+ ${c.datatype()} ${c.name} = UNPACK(*src, ${c.shift}, ${c.size});
+ %endif
+ %endfor
+ %elif f.layout == parser.ARRAY:
+ %for (i, c) in enumerate(f.channels):
+ %if c.type != 'x':
+ ${c.datatype()} ${c.name} = src[${i}];
+ %endif
+ %endfor
+ %else:
+ <% assert False %>
+ %endif
+
+ %for i in range(4):
+ <% s = f.swizzle[i] %>
+ %if 0 <= s and s <= parser.Swizzle.SWIZZLE_W:
+ dst[${i}] = ${f.channels[s].name};
+ %elif s == parser.Swizzle.SWIZZLE_ZERO:
+ dst[${i}] = 0;
+ %elif s == parser.Swizzle.SWIZZLE_ONE:
+ dst[${i}] = 1;
+ %else:
+ <% assert False %>
+ %endif
+ %endfor
+}
+%endfor
+
+
+void
+_mesa_unpack_rgba_row(mesa_format format, GLuint n,
+ const void *src, GLfloat dst[][4])
+{
+ GLubyte *s = (GLubyte *)src;
+ GLuint i;
+
+ switch (format) {
+%for f in rgb_formats:
+ %if f.is_compressed():
+ <% continue %>
+ %elif f.is_int() and not f.is_normalized():
+ <% continue %>
+ %endif
+ case ${f.name}:
+ for (i = 0; i < n; ++i) {
+ unpack_float_${f.short_name()}(s, dst[i]);
+ s += ${f.block_size() / 8};
+ }
+ break;
+%endfor
+ case MESA_FORMAT_YCBCR:
+ unpack_float_ycbcr(src, dst, n);
+ break;
+ case MESA_FORMAT_YCBCR_REV:
+ unpack_float_ycbcr_rev(src, dst, n);
+ break;
+ default:
+ _mesa_problem(NULL, "%s: bad format %s", __FUNCTION__,
+ _mesa_get_format_name(format));
+ return;
+ }
+}
+
+void
+_mesa_unpack_ubyte_rgba_row(mesa_format format, GLuint n,
+ const void *src, GLubyte dst[][4])
+{
+ GLubyte *s = (GLubyte *)src;
+ GLuint i;
+
+ switch (format) {
+%for f in rgb_formats:
+ %if not f.is_normalized():
+ <% continue %>
+ %endif
+
+ case ${f.name}:
+ for (i = 0; i < n; ++i) {
+ unpack_ubyte_${f.short_name()}(s, dst[i]);
+ s += ${f.block_size() / 8};
+ }
+ break;
+%endfor
+ default:
+ /* get float values, convert to ubyte */
+ {
+ GLfloat *tmp = malloc(n * 4 * sizeof(GLfloat));
+ if (tmp) {
+ GLuint i;
+ _mesa_unpack_rgba_row(format, n, src, (GLfloat (*)[4]) tmp);
+ for (i = 0; i < n; i++) {
+ dst[i][0] = _mesa_float_to_unorm(tmp[i*4+0], 8);
+ dst[i][1] = _mesa_float_to_unorm(tmp[i*4+1], 8);
+ dst[i][2] = _mesa_float_to_unorm(tmp[i*4+2], 8);
+ dst[i][3] = _mesa_float_to_unorm(tmp[i*4+3], 8);
+ }
+ free(tmp);
+ }
+ }
+ break;
+ }
+}
+
+void
+_mesa_unpack_uint_rgba_row(mesa_format format, GLuint n,
+ const void *src, GLuint dst[][4])
+{
+ GLubyte *s = (GLubyte *)src;
+ GLuint i;
+
+ switch (format) {
+%for f in rgb_formats:
+ %if not f.is_int():
+ <% continue %>
+ %elif f.is_normalized():
+ <% continue %>
+ %endif
+
+ case ${f.name}:
+ for (i = 0; i < n; ++i) {
+ unpack_int_${f.short_name()}(s, dst[i]);
+ s += ${f.block_size() / 8};
+ }
+ break;
+%endfor
+ default:
+ _mesa_problem(NULL, "%s: bad format %s", __FUNCTION__,
+ _mesa_get_format_name(format));
+ return;
+ }
+}
+
+/**
+ * Unpack a 2D rect of pixels returning float RGBA colors.
+ * \param format the source image format
+ * \param src start address of the source image
+ * \param srcRowStride source image row stride in bytes
+ * \param dst start address of the dest image
+ * \param dstRowStride dest image row stride in bytes
+ * \param x source image start X pos
+ * \param y source image start Y pos
+ * \param width width of rect region to convert
+ * \param height height of rect region to convert
+ */
+void
+_mesa_unpack_rgba_block(mesa_format format,
+ const void *src, GLint srcRowStride,
+ GLfloat dst[][4], GLint dstRowStride,
+ GLuint x, GLuint y, GLuint width, GLuint height)
+{
+ const GLuint srcPixStride = _mesa_get_format_bytes(format);
+ const GLuint dstPixStride = 4 * sizeof(GLfloat);
+ const GLubyte *srcRow;
+ GLubyte *dstRow;
+ GLuint i;
+
+ /* XXX needs to be fixed for compressed formats */
+
+ srcRow = ((const GLubyte *) src) + srcRowStride * y + srcPixStride * x;
+ dstRow = ((GLubyte *) dst) + dstRowStride * y + dstPixStride * x;
+
+ for (i = 0; i < height; i++) {
+ _mesa_unpack_rgba_row(format, width, srcRow, (GLfloat (*)[4]) dstRow);
+
+ dstRow += dstRowStride;
+ srcRow += srcRowStride;
+ }
+}
+
+/** Helper struct for MESA_FORMAT_Z32_FLOAT_S8X24_UINT */
+struct z32f_x24s8
+{
+ float z;
+ uint32_t x24s8;
+};
+
+typedef void (*unpack_float_z_func)(GLuint n, const void *src, GLfloat *dst);
+
+static void
+unpack_float_z_X8_UINT_Z24_UNORM(GLuint n, const void *src, GLfloat *dst)
+{
+ /* only return Z, not stencil data */
+ const GLuint *s = ((const GLuint *) src);
+ const GLdouble scale = 1.0 / (GLdouble) 0xffffff;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ dst[i] = (GLfloat) ((s[i] >> 8) * scale);
+ ASSERT(dst[i] >= 0.0F);
+ ASSERT(dst[i] <= 1.0F);
+ }
+}
+
+static void
+unpack_float_z_Z24_UNORM_X8_UINT(GLuint n, const void *src, GLfloat *dst)
+{
+ /* only return Z, not stencil data */
+ const GLuint *s = ((const GLuint *) src);
+ const GLdouble scale = 1.0 / (GLdouble) 0xffffff;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ dst[i] = (GLfloat) ((s[i] & 0x00ffffff) * scale);
+ ASSERT(dst[i] >= 0.0F);
+ ASSERT(dst[i] <= 1.0F);
+ }
+}
+
+static void
+unpack_float_Z_UNORM16(GLuint n, const void *src, GLfloat *dst)
+{
+ const GLushort *s = ((const GLushort *) src);
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ dst[i] = s[i] * (1.0F / 65535.0F);
+ }
+}
+
+static void
+unpack_float_Z_UNORM32(GLuint n, const void *src, GLfloat *dst)
+{
+ const GLuint *s = ((const GLuint *) src);
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ dst[i] = s[i] * (1.0F / 0xffffffff);
+ }
+}
+
+static void
+unpack_float_Z_FLOAT32(GLuint n, const void *src, GLfloat *dst)
+{
+ memcpy(dst, src, n * sizeof(float));
+}
+
+static void
+unpack_float_z_Z32X24S8(GLuint n, const void *src, GLfloat *dst)
+{
+ const struct z32f_x24s8 *s = (const struct z32f_x24s8 *) src;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ dst[i] = s[i].z;
+ }
+}
+
+
+
+/**
+ * Unpack Z values.
+ * The returned values will always be in the range [0.0, 1.0].
+ */
+void
+_mesa_unpack_float_z_row(mesa_format format, GLuint n,
+ const void *src, GLfloat *dst)
+{
+ unpack_float_z_func unpack;
+
+ switch (format) {
+ case MESA_FORMAT_S8_UINT_Z24_UNORM:
+ case MESA_FORMAT_X8_UINT_Z24_UNORM:
+ unpack = unpack_float_z_X8_UINT_Z24_UNORM;
+ break;
+ case MESA_FORMAT_Z24_UNORM_S8_UINT:
+ case MESA_FORMAT_Z24_UNORM_X8_UINT:
+ unpack = unpack_float_z_Z24_UNORM_X8_UINT;
+ break;
+ case MESA_FORMAT_Z_UNORM16:
+ unpack = unpack_float_Z_UNORM16;
+ break;
+ case MESA_FORMAT_Z_UNORM32:
+ unpack = unpack_float_Z_UNORM32;
+ break;
+ case MESA_FORMAT_Z_FLOAT32:
+ unpack = unpack_float_Z_FLOAT32;
+ break;
+ case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
+ unpack = unpack_float_z_Z32X24S8;
+ break;
+ default:
+ _mesa_problem(NULL, "bad format %s in _mesa_unpack_float_z_row",
+ _mesa_get_format_name(format));
+ return;
+ }
+
+ unpack(n, src, dst);
+}
+
+
+
+typedef void (*unpack_uint_z_func)(const void *src, GLuint *dst, GLuint n);
+
+static void
+unpack_uint_z_X8_UINT_Z24_UNORM(const void *src, GLuint *dst, GLuint n)
+{
+ /* only return Z, not stencil data */
+ const GLuint *s = ((const GLuint *) src);
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ dst[i] = (s[i] & 0xffffff00) | (s[i] >> 24);
+ }
+}
+
+static void
+unpack_uint_z_Z24_UNORM_X8_UINT(const void *src, GLuint *dst, GLuint n)
+{
+ /* only return Z, not stencil data */
+ const GLuint *s = ((const GLuint *) src);
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ dst[i] = (s[i] << 8) | ((s[i] >> 16) & 0xff);
+ }
+}
+
+static void
+unpack_uint_Z_UNORM16(const void *src, GLuint *dst, GLuint n)
+{
+ const GLushort *s = ((const GLushort *)src);
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ dst[i] = (s[i] << 16) | s[i];
+ }
+}
+
+static void
+unpack_uint_Z_UNORM32(const void *src, GLuint *dst, GLuint n)
+{
+ memcpy(dst, src, n * sizeof(GLuint));
+}
+
+static void
+unpack_uint_Z_FLOAT32(const void *src, GLuint *dst, GLuint n)
+{
+ const float *s = (const float *)src;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ dst[i] = FLOAT_TO_UINT(CLAMP(s[i], 0.0F, 1.0F));
+ }
+}
+
+static void
+unpack_uint_Z_FLOAT32_X24S8(const void *src, GLuint *dst, GLuint n)
+{
+ const struct z32f_x24s8 *s = (const struct z32f_x24s8 *) src;
+ GLuint i;
+
+ for (i = 0; i < n; i++) {
+ dst[i] = FLOAT_TO_UINT(CLAMP(s[i].z, 0.0F, 1.0F));
+ }
+}
+
+
+/**
+ * Unpack Z values.
+ * The returned values will always be in the range [0, 0xffffffff].
+ */
+void
+_mesa_unpack_uint_z_row(mesa_format format, GLuint n,
+ const void *src, GLuint *dst)
+{
+ unpack_uint_z_func unpack;
+ const GLubyte *srcPtr = (GLubyte *) src;
+
+ switch (format) {
+ case MESA_FORMAT_S8_UINT_Z24_UNORM:
+ case MESA_FORMAT_X8_UINT_Z24_UNORM:
+ unpack = unpack_uint_z_X8_UINT_Z24_UNORM;
+ break;
+ case MESA_FORMAT_Z24_UNORM_S8_UINT:
+ case MESA_FORMAT_Z24_UNORM_X8_UINT:
+ unpack = unpack_uint_z_Z24_UNORM_X8_UINT;
+ break;
+ case MESA_FORMAT_Z_UNORM16:
+ unpack = unpack_uint_Z_UNORM16;
+ break;
+ case MESA_FORMAT_Z_UNORM32:
+ unpack = unpack_uint_Z_UNORM32;
+ break;
+ case MESA_FORMAT_Z_FLOAT32:
+ unpack = unpack_uint_Z_FLOAT32;
+ break;
+ case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
+ unpack = unpack_uint_Z_FLOAT32_X24S8;
+ break;
+ default:
+ _mesa_problem(NULL, "bad format %s in _mesa_unpack_uint_z_row",
+ _mesa_get_format_name(format));
+ return;
+ }
+
+ unpack(srcPtr, dst, n);
+}
+
+
+static void
+unpack_ubyte_s_S_UINT8(const void *src, GLubyte *dst, GLuint n)
+{
+ memcpy(dst, src, n);
+}
+
+static void
+unpack_ubyte_s_S8_UINT_Z24_UNORM(const void *src, GLubyte *dst, GLuint n)
+{
+ GLuint i;
+ const GLuint *src32 = src;
+
+ for (i = 0; i < n; i++)
+ dst[i] = src32[i] & 0xff;
+}
+
+static void
+unpack_ubyte_s_Z24_UNORM_S8_UINT(const void *src, GLubyte *dst, GLuint n)
+{
+ GLuint i;
+ const GLuint *src32 = src;
+
+ for (i = 0; i < n; i++)
+ dst[i] = src32[i] >> 24;
+}
+
+static void
+unpack_ubyte_s_Z32_FLOAT_S8X24_UINT(const void *src, GLubyte *dst, GLuint n)
+{
+ GLuint i;
+ const struct z32f_x24s8 *s = (const struct z32f_x24s8 *) src;
+
+ for (i = 0; i < n; i++)
+ dst[i] = s[i].x24s8 & 0xff;
+}
+
+void
+_mesa_unpack_ubyte_stencil_row(mesa_format format, GLuint n,
+ const void *src, GLubyte *dst)
+{
+ switch (format) {
+ case MESA_FORMAT_S_UINT8:
+ unpack_ubyte_s_S_UINT8(src, dst, n);
+ break;
+ case MESA_FORMAT_S8_UINT_Z24_UNORM:
+ unpack_ubyte_s_S8_UINT_Z24_UNORM(src, dst, n);
+ break;
+ case MESA_FORMAT_Z24_UNORM_S8_UINT:
+ unpack_ubyte_s_Z24_UNORM_S8_UINT(src, dst, n);
+ break;
+ case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
+ unpack_ubyte_s_Z32_FLOAT_S8X24_UINT(src, dst, n);
+ break;
+ default:
+ _mesa_problem(NULL, "bad format %s in _mesa_unpack_ubyte_s_row",
+ _mesa_get_format_name(format));
+ return;
+ }
+}
+
+static void
+unpack_uint_24_8_depth_stencil_Z24_UNORM_S8_UINT(const GLuint *src, GLuint *dst, GLuint n)
+{
+ GLuint i;
+
+ for (i = 0; i < n; i++) {
+ GLuint val = src[i];
+ dst[i] = val >> 24 | val << 8;
+ }
+}
+
+static void
+unpack_uint_24_8_depth_stencil_Z32_S8X24(const GLuint *src,
+ GLuint *dst, GLuint n)
+{
+ GLuint i;
+
+ for (i = 0; i < n; i++) {
+ /* 8 bytes per pixel (float + uint32) */
+ GLfloat zf = ((GLfloat *) src)[i * 2 + 0];
+ GLuint z24 = (GLuint) (zf * (GLfloat) 0xffffff);
+ GLuint s = src[i * 2 + 1] & 0xff;
+ dst[i] = (z24 << 8) | s;
+ }
+}
+
+static void
+unpack_uint_24_8_depth_stencil_S8_UINT_Z24_UNORM(const GLuint *src, GLuint *dst, GLuint n)
+{
+ memcpy(dst, src, n * 4);
+}
+
+/**
+ * Unpack depth/stencil returning as GL_UNSIGNED_INT_24_8.
+ * \param format the source data format
+ */
+void
+_mesa_unpack_uint_24_8_depth_stencil_row(mesa_format format, GLuint n,
+ const void *src, GLuint *dst)
+{
+ switch (format) {
+ case MESA_FORMAT_S8_UINT_Z24_UNORM:
+ unpack_uint_24_8_depth_stencil_S8_UINT_Z24_UNORM(src, dst, n);
+ break;
+ case MESA_FORMAT_Z24_UNORM_S8_UINT:
+ unpack_uint_24_8_depth_stencil_Z24_UNORM_S8_UINT(src, dst, n);
+ break;
+ case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
+ unpack_uint_24_8_depth_stencil_Z32_S8X24(src, dst, n);
+ break;
+ default:
+ _mesa_problem(NULL,
+ "bad format %s in _mesa_unpack_uint_24_8_depth_stencil_row",
+ _mesa_get_format_name(format));
+ return;
+ }
+}
+
+static void
+unpack_float_32_uint_24_8_Z24_UNORM_S8_UINT(const GLuint *src,
+ GLuint *dst, GLuint n)
+{
+ GLuint i;
+ struct z32f_x24s8 *d = (struct z32f_x24s8 *) dst;
+ const GLdouble scale = 1.0 / (GLdouble) 0xffffff;
+
+ for (i = 0; i < n; i++) {
+ const GLuint z24 = src[i] & 0xffffff;
+ d[i].z = z24 * scale;
+ d[i].x24s8 = src[i] >> 24;
+ assert(d[i].z >= 0.0f);
+ assert(d[i].z <= 1.0f);
+ }
+}
+
+static void
+unpack_float_32_uint_24_8_Z32_FLOAT_S8X24_UINT(const GLuint *src,
+ GLuint *dst, GLuint n)
+{
+ memcpy(dst, src, n * sizeof(struct z32f_x24s8));
+}
+
+static void
+unpack_float_32_uint_24_8_S8_UINT_Z24_UNORM(const GLuint *src,
+ GLuint *dst, GLuint n)
+{
+ GLuint i;
+ struct z32f_x24s8 *d = (struct z32f_x24s8 *) dst;
+ const GLdouble scale = 1.0 / (GLdouble) 0xffffff;
+
+ for (i = 0; i < n; i++) {
+ const GLuint z24 = src[i] >> 8;
+ d[i].z = z24 * scale;
+ d[i].x24s8 = src[i] & 0xff;
+ assert(d[i].z >= 0.0f);
+ assert(d[i].z <= 1.0f);
+ }
+}
+
+/**
+ * Unpack depth/stencil returning as GL_FLOAT_32_UNSIGNED_INT_24_8_REV.
+ * \param format the source data format
+ *
+ * In GL_FLOAT_32_UNSIGNED_INT_24_8_REV lower 4 bytes contain float
+ * component and higher 4 bytes contain packed 24-bit and 8-bit
+ * components.
+ *
+ * 31 30 29 28 ... 4 3 2 1 0 31 30 29 ... 9 8 7 6 5 ... 2 1 0
+ * +-------------------------+ +--------------------------------+
+ * | Float Component | | Unused | 8 bit stencil |
+ * +-------------------------+ +--------------------------------+
+ * lower 4 bytes higher 4 bytes
+ */
+void
+_mesa_unpack_float_32_uint_24_8_depth_stencil_row(mesa_format format, GLuint n,
+ const void *src, GLuint *dst)
+{
+ switch (format) {
+ case MESA_FORMAT_S8_UINT_Z24_UNORM:
+ unpack_float_32_uint_24_8_S8_UINT_Z24_UNORM(src, dst, n);
+ break;
+ case MESA_FORMAT_Z24_UNORM_S8_UINT:
+ unpack_float_32_uint_24_8_Z24_UNORM_S8_UINT(src, dst, n);
+ break;
+ case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
+ unpack_float_32_uint_24_8_Z32_FLOAT_S8X24_UINT(src, dst, n);
+ break;
+ default:
+ _mesa_problem(NULL,
+ "bad format %s in _mesa_unpack_uint_24_8_depth_stencil_row",
+ _mesa_get_format_name(format));
+ return;
+ }
+}
+
+/**
+ * Unpack depth/stencil
+ * \param format the source data format
+ * \param type the destination data type
+ */
+void
+_mesa_unpack_depth_stencil_row(mesa_format format, GLuint n,
+ const void *src, GLenum type,
+ GLuint *dst)
+{
+ assert(type == GL_UNSIGNED_INT_24_8 ||
+ type == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
+
+ switch (type) {
+ case GL_UNSIGNED_INT_24_8:
+ _mesa_unpack_uint_24_8_depth_stencil_row(format, n, src, dst);
+ break;
+ case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
+ _mesa_unpack_float_32_uint_24_8_depth_stencil_row(format, n, src, dst);
+ break;
+ default:
+ _mesa_problem(NULL,
+ "bad type 0x%x in _mesa_unpack_depth_stencil_row",
+ type);
+ return;
+ }
+}
+"""
+
+template = Template(string);
+
+print template.render(argv = argv[0:])
projects / mesa.git / blobdiff