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Diffstat (limited to 'src/mesa/main/format_unpack.py')
-rw-r--r-- | src/mesa/main/format_unpack.py | 896 |
1 files changed, 896 insertions, 0 deletions
diff --git a/src/mesa/main/format_unpack.py b/src/mesa/main/format_unpack.py new file mode 100644 index 00000000000..f71ca359ab1 --- /dev/null +++ b/src/mesa/main/format_unpack.py @@ -0,0 +1,896 @@ +#!/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:]) |