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reactos/dll/opengl/mesa/main/format_pack.c

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/*
* Mesa 3-D graphics library
*
* Copyright (c) 2011 VMware, Inc.
*
* 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 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 <precomp.h>
typedef void (*pack_ubyte_rgba_row_func)(GLuint n,
const GLubyte src[][4], void *dst);
typedef void (*pack_float_rgba_row_func)(GLuint n,
const GLfloat src[][4], void *dst);
/*
* MESA_FORMAT_RGBA8888
*/
static void
pack_ubyte_RGBA8888(const GLubyte src[4], void *dst)
{
GLuint *d = ((GLuint *) dst);
*d = PACK_COLOR_8888(src[RCOMP], src[GCOMP], src[BCOMP], src[ACOMP]);
}
static void
pack_float_RGBA8888(const GLfloat src[4], void *dst)
{
GLubyte v[4];
_mesa_unclamped_float_rgba_to_ubyte(v, src);
pack_ubyte_RGBA8888(v, dst);
}
static void
pack_row_ubyte_RGBA8888(GLuint n, const GLubyte src[][4], void *dst)
{
GLuint *d = ((GLuint *) dst);
GLuint i;
for (i = 0; i < n; i++) {
d[i] = PACK_COLOR_8888(src[i][RCOMP], src[i][GCOMP],
src[i][BCOMP], src[i][ACOMP]);
}
}
static void
pack_row_float_RGBA8888(GLuint n, const GLfloat src[][4], void *dst)
{
GLuint *d = ((GLuint *) dst);
GLuint i;
for (i = 0; i < n; i++) {
GLubyte v[4];
_mesa_unclamped_float_rgba_to_ubyte(v, src[i]);
pack_ubyte_RGBA8888(v, d + i);
}
}
/*
* MESA_FORMAT_RGBA8888_REV
*/
static void
pack_ubyte_RGBA8888_REV(const GLubyte src[4], void *dst)
{
GLuint *d = ((GLuint *) dst);
*d = PACK_COLOR_8888(src[ACOMP], src[BCOMP], src[GCOMP], src[RCOMP]);
}
static void
pack_float_RGBA8888_REV(const GLfloat src[4], void *dst)
{
GLubyte v[4];
_mesa_unclamped_float_rgba_to_ubyte(v, src);
pack_ubyte_RGBA8888_REV(v, dst);
}
static void
pack_row_ubyte_RGBA8888_REV(GLuint n, const GLubyte src[][4], void *dst)
{
GLuint *d = ((GLuint *) dst);
GLuint i;
for (i = 0; i < n; i++) {
d[i] = PACK_COLOR_8888(src[i][ACOMP], src[i][BCOMP],
src[i][GCOMP], src[i][RCOMP]);
}
}
static void
pack_row_float_RGBA8888_REV(GLuint n, const GLfloat src[][4], void *dst)
{
GLuint *d = ((GLuint *) dst);
GLuint i;
for (i = 0; i < n; i++) {
GLubyte v[4];
_mesa_unclamped_float_rgba_to_ubyte(v, src[i]);
pack_ubyte_RGBA8888_REV(v, d + i);
}
}
/*
* MESA_FORMAT_ARGB8888
*/
static void
pack_ubyte_ARGB8888(const GLubyte src[4], void *dst)
{
GLuint *d = ((GLuint *) dst);
*d = PACK_COLOR_8888(src[ACOMP], src[RCOMP], src[GCOMP], src[BCOMP]);
}
static void
pack_float_ARGB8888(const GLfloat src[4], void *dst)
{
GLubyte v[4];
_mesa_unclamped_float_rgba_to_ubyte(v, src);
pack_ubyte_ARGB8888(v, dst);
}
static void
pack_row_ubyte_ARGB8888(GLuint n, const GLubyte src[][4], void *dst)
{
GLuint *d = ((GLuint *) dst);
GLuint i;
for (i = 0; i < n; i++) {
d[i] = PACK_COLOR_8888(src[i][ACOMP], src[i][RCOMP],
src[i][GCOMP], src[i][BCOMP]);
}
}
static void
pack_row_float_ARGB8888(GLuint n, const GLfloat src[][4], void *dst)
{
GLuint *d = ((GLuint *) dst);
GLuint i;
for (i = 0; i < n; i++) {
GLubyte v[4];
_mesa_unclamped_float_rgba_to_ubyte(v, src[i]);
pack_ubyte_ARGB8888(v, d + i);
}
}
/*
* MESA_FORMAT_ARGB8888_REV
*/
static void
pack_ubyte_ARGB8888_REV(const GLubyte src[4], void *dst)
{
GLuint *d = ((GLuint *) dst);
*d = PACK_COLOR_8888(src[BCOMP], src[GCOMP], src[RCOMP], src[ACOMP]);
}
static void
pack_float_ARGB8888_REV(const GLfloat src[4], void *dst)
{
GLubyte v[4];
_mesa_unclamped_float_rgba_to_ubyte(v, src);
pack_ubyte_ARGB8888_REV(v, dst);
}
static void
pack_row_ubyte_ARGB8888_REV(GLuint n, const GLubyte src[][4], void *dst)
{
GLuint *d = ((GLuint *) dst);
GLuint i;
for (i = 0; i < n; i++) {
d[i] = PACK_COLOR_8888(src[i][BCOMP], src[i][GCOMP],
src[i][RCOMP], src[i][ACOMP]);
}
}
static void
pack_row_float_ARGB8888_REV(GLuint n, const GLfloat src[][4], void *dst)
{
GLuint *d = ((GLuint *) dst);
GLuint i;
for (i = 0; i < n; i++) {
GLubyte v[4];
_mesa_unclamped_float_rgba_to_ubyte(v, src[i]);
pack_ubyte_ARGB8888_REV(v, d + i);
}
}
/*
* MESA_FORMAT_XRGB8888
*/
static void
pack_ubyte_XRGB8888(const GLubyte src[4], void *dst)
{
GLuint *d = ((GLuint *) dst);
*d = PACK_COLOR_8888(0x0, src[RCOMP], src[GCOMP], src[BCOMP]);
}
static void
pack_float_XRGB8888(const GLfloat src[4], void *dst)
{
GLubyte v[4];
_mesa_unclamped_float_rgba_to_ubyte(v, src);
pack_ubyte_XRGB8888(v, dst);
}
static void
pack_row_ubyte_XRGB8888(GLuint n, const GLubyte src[][4], void *dst)
{
GLuint *d = ((GLuint *) dst);
GLuint i;
for (i = 0; i < n; i++) {
d[i] = PACK_COLOR_8888(0, src[i][RCOMP], src[i][GCOMP], src[i][BCOMP]);
}
}
static void
pack_row_float_XRGB8888(GLuint n, const GLfloat src[][4], void *dst)
{
GLuint *d = ((GLuint *) dst);
GLuint i;
for (i = 0; i < n; i++) {
GLubyte v[4];
_mesa_unclamped_float_rgba_to_ubyte(v, src[i]);
pack_ubyte_XRGB8888(v, d + i);
}
}
/*
* MESA_FORMAT_XRGB8888_REV
*/
static void
pack_ubyte_XRGB8888_REV(const GLubyte src[4], void *dst)
{
GLuint *d = ((GLuint *) dst);
*d = PACK_COLOR_8888(src[BCOMP], src[GCOMP], src[RCOMP], 0);
}
static void
pack_float_XRGB8888_REV(const GLfloat src[4], void *dst)
{
GLubyte v[4];
_mesa_unclamped_float_rgba_to_ubyte(v, src);
pack_ubyte_XRGB8888_REV(v, dst);
}
static void
pack_row_ubyte_XRGB8888_REV(GLuint n, const GLubyte src[][4], void *dst)
{
GLuint *d = ((GLuint *) dst);
GLuint i;
for (i = 0; i < n; i++) {
d[i] = PACK_COLOR_8888(src[i][BCOMP], src[i][GCOMP], src[i][RCOMP], 0);
}
}
static void
pack_row_float_XRGB8888_REV(GLuint n, const GLfloat src[][4], void *dst)
{
GLuint *d = ((GLuint *) dst);
GLuint i;
for (i = 0; i < n; i++) {
GLubyte v[4];
_mesa_unclamped_float_rgba_to_ubyte(v, src[i]);
pack_ubyte_XRGB8888_REV(v, d + i);
}
}
/*
* MESA_FORMAT_RGB888
*/
static void
pack_ubyte_RGB888(const GLubyte src[4], void *dst)
{
GLubyte *d = ((GLubyte *) dst);
d[2] = src[RCOMP];
d[1] = src[GCOMP];
d[0] = src[BCOMP];
}
static void
pack_float_RGB888(const GLfloat src[4], void *dst)
{
GLubyte *d = ((GLubyte *) dst);
UNCLAMPED_FLOAT_TO_UBYTE(d[2], src[RCOMP]);
UNCLAMPED_FLOAT_TO_UBYTE(d[1], src[GCOMP]);
UNCLAMPED_FLOAT_TO_UBYTE(d[0], src[BCOMP]);
}
static void
pack_row_ubyte_RGB888(GLuint n, const GLubyte src[][4], void *dst)
{
GLubyte *d = ((GLubyte *) dst);
GLuint i;
for (i = 0; i < n; i++) {
d[i*3+2] = src[i][RCOMP];
d[i*3+1] = src[i][GCOMP];
d[i*3+0] = src[i][BCOMP];
}
}
static void
pack_row_float_RGB888(GLuint n, const GLfloat src[][4], void *dst)
{
GLubyte *d = ((GLubyte *) dst);
GLuint i;
for (i = 0; i < n; i++) {
GLubyte v[4];
_mesa_unclamped_float_rgba_to_ubyte(v, src[i]);
d[i*3+2] = v[RCOMP];
d[i*3+1] = v[GCOMP];
d[i*3+0] = v[BCOMP];
}
}
/*
* MESA_FORMAT_BGR888
*/
static void
pack_ubyte_BGR888(const GLubyte src[4], void *dst)
{
GLubyte *d = ((GLubyte *) dst);
d[2] = src[BCOMP];
d[1] = src[GCOMP];
d[0] = src[RCOMP];
}
static void
pack_float_BGR888(const GLfloat src[4], void *dst)
{
GLubyte *d = ((GLubyte *) dst);
UNCLAMPED_FLOAT_TO_UBYTE(d[2], src[BCOMP]);
UNCLAMPED_FLOAT_TO_UBYTE(d[1], src[GCOMP]);
UNCLAMPED_FLOAT_TO_UBYTE(d[0], src[RCOMP]);
}
static void
pack_row_ubyte_BGR888(GLuint n, const GLubyte src[][4], void *dst)
{
GLubyte *d = ((GLubyte *) dst);
GLuint i;
for (i = 0; i < n; i++) {
d[i*3+2] = src[i][BCOMP];
d[i*3+1] = src[i][GCOMP];
d[i*3+0] = src[i][RCOMP];
}
}
static void
pack_row_float_BGR888(GLuint n, const GLfloat src[][4], void *dst)
{
GLubyte *d = ((GLubyte *) dst);
GLuint i;
for (i = 0; i < n; i++) {
GLubyte v[4];
_mesa_unclamped_float_rgba_to_ubyte(v, src[i]);
d[i*3+2] = v[BCOMP];
d[i*3+1] = v[GCOMP];
d[i*3+0] = v[RCOMP];
}
}
/*
* MESA_FORMAT_RGB565
*/
static void
pack_ubyte_RGB565(const GLubyte src[4], void *dst)
{
GLushort *d = ((GLushort *) dst);
*d = PACK_COLOR_565(src[RCOMP], src[GCOMP], src[BCOMP]);
}
static void
pack_float_RGB565(const GLfloat src[4], void *dst)
{
GLubyte v[3];
UNCLAMPED_FLOAT_TO_UBYTE(v[0], src[RCOMP]);
UNCLAMPED_FLOAT_TO_UBYTE(v[1], src[GCOMP]);
UNCLAMPED_FLOAT_TO_UBYTE(v[2], src[BCOMP]);
pack_ubyte_RGB565(v, dst);
}
static void
pack_row_ubyte_RGB565(GLuint n, const GLubyte src[][4], void *dst)
{
GLushort *d = ((GLushort *) dst);
GLuint i;
for (i = 0; i < n; i++) {
pack_ubyte_RGB565(src[i], d + i);
}
}
static void
pack_row_float_RGB565(GLuint n, const GLfloat src[][4], void *dst)
{
GLushort *d = ((GLushort *) dst);
GLuint i;
for (i = 0; i < n; i++) {
GLubyte v[4];
_mesa_unclamped_float_rgba_to_ubyte(v, src[i]);
pack_ubyte_RGB565(v, d + i);
}
}
/*
* MESA_FORMAT_RGB565_REV
*/
static void
pack_ubyte_RGB565_REV(const GLubyte src[4], void *dst)
{
GLushort *d = ((GLushort *) dst);
*d = PACK_COLOR_565_REV(src[RCOMP], src[GCOMP], src[BCOMP]);
}
static void
pack_float_RGB565_REV(const GLfloat src[4], void *dst)
{
GLushort *d = ((GLushort *) dst);
GLubyte r, g, b;
UNCLAMPED_FLOAT_TO_UBYTE(r, src[RCOMP]);
UNCLAMPED_FLOAT_TO_UBYTE(g, src[GCOMP]);
UNCLAMPED_FLOAT_TO_UBYTE(b, src[BCOMP]);
*d = PACK_COLOR_565_REV(r, g, b);
}
static void
pack_row_ubyte_RGB565_REV(GLuint n, const GLubyte src[][4], void *dst)
{
GLushort *d = ((GLushort *) dst);
GLuint i;
for (i = 0; i < n; i++) {
pack_ubyte_RGB565_REV(src[i], d + i);
}
}
static void
pack_row_float_RGB565_REV(GLuint n, const GLfloat src[][4], void *dst)
{
GLushort *d = ((GLushort *) dst);
GLuint i;
for (i = 0; i < n; i++) {
GLubyte v[4];
_mesa_unclamped_float_rgba_to_ubyte(v, src[i]);
pack_ubyte_RGB565_REV(v, d + i);
}
}
/*
* MESA_FORMAT_ARGB4444
*/
static void
pack_ubyte_ARGB4444(const GLubyte src[4], void *dst)
{
GLushort *d = ((GLushort *) dst);
*d = PACK_COLOR_4444(src[ACOMP], src[RCOMP], src[GCOMP], src[BCOMP]);
}
static void
pack_float_ARGB4444(const GLfloat src[4], void *dst)
{
GLubyte v[4];
_mesa_unclamped_float_rgba_to_ubyte(v, src);
pack_ubyte_ARGB4444(v, dst);
}
/* use fallback row packing functions */
/*
* MESA_FORMAT_ARGB4444_REV
*/
static void
pack_ubyte_ARGB4444_REV(const GLubyte src[4], void *dst)
{
GLushort *d = ((GLushort *) dst);
*d = PACK_COLOR_4444(src[GCOMP], src[BCOMP], src[ACOMP], src[RCOMP]);
}
static void
pack_float_ARGB4444_REV(const GLfloat src[4], void *dst)
{
GLubyte v[4];
_mesa_unclamped_float_rgba_to_ubyte(v, src);
pack_ubyte_ARGB4444_REV(v, dst);
}
/* use fallback row packing functions */
/*
* MESA_FORMAT_RGBA5551
*/
static void
pack_ubyte_RGBA5551(const GLubyte src[4], void *dst)
{
GLushort *d = ((GLushort *) dst);
*d = PACK_COLOR_5551(src[RCOMP], src[GCOMP], src[BCOMP], src[ACOMP]);
}
static void
pack_float_RGBA5551(const GLfloat src[4], void *dst)
{
GLubyte v[4];
_mesa_unclamped_float_rgba_to_ubyte(v, src);
pack_ubyte_RGBA5551(v, dst);
}
/* use fallback row packing functions */
/*
* MESA_FORMAT_ARGB1555
*/
static void
pack_ubyte_ARGB1555(const GLubyte src[4], void *dst)
{
GLushort *d = ((GLushort *) dst);
*d = PACK_COLOR_1555(src[ACOMP], src[RCOMP], src[GCOMP], src[BCOMP]);
}
static void
pack_float_ARGB1555(const GLfloat src[4], void *dst)
{
GLubyte v[4];
_mesa_unclamped_float_rgba_to_ubyte(v, src);
pack_ubyte_ARGB1555(v, dst);
}
/* MESA_FORMAT_ARGB1555_REV */
static void
pack_ubyte_ARGB1555_REV(const GLubyte src[4], void *dst)
{
GLushort *d = ((GLushort *) dst), tmp;
tmp = PACK_COLOR_1555(src[ACOMP], src[RCOMP], src[GCOMP], src[BCOMP]);
*d = (tmp >> 8) | (tmp << 8);
}
static void
pack_float_ARGB1555_REV(const GLfloat src[4], void *dst)
{
GLubyte v[4];
_mesa_unclamped_float_rgba_to_ubyte(v, src);
pack_ubyte_ARGB1555_REV(v, dst);
}
/* MESA_FORMAT_AL44 */
static void
pack_ubyte_AL44(const GLubyte src[4], void *dst)
{
GLubyte *d = ((GLubyte *) dst);
*d = PACK_COLOR_44(src[ACOMP], src[RCOMP]);
}
static void
pack_float_AL44(const GLfloat src[4], void *dst)
{
GLubyte v[4];
UNCLAMPED_FLOAT_TO_UBYTE(v[0], src[RCOMP]);
UNCLAMPED_FLOAT_TO_UBYTE(v[3], src[ACOMP]);
pack_ubyte_AL44(v, dst);
}
/* MESA_FORMAT_AL88 */
static void
pack_ubyte_AL88(const GLubyte src[4], void *dst)
{
GLushort *d = ((GLushort *) dst);
*d = PACK_COLOR_88(src[ACOMP], src[RCOMP]);
}
static void
pack_float_AL88(const GLfloat src[4], void *dst)
{
GLubyte v[4];
UNCLAMPED_FLOAT_TO_UBYTE(v[0], src[RCOMP]);
UNCLAMPED_FLOAT_TO_UBYTE(v[3], src[ACOMP]);
pack_ubyte_AL88(v, dst);
}
/* MESA_FORMAT_AL88_REV */
static void
pack_ubyte_AL88_REV(const GLubyte src[4], void *dst)
{
GLushort *d = ((GLushort *) dst);
*d = PACK_COLOR_88(src[RCOMP], src[ACOMP]);
}
static void
pack_float_AL88_REV(const GLfloat src[4], void *dst)
{
GLubyte v[4];
UNCLAMPED_FLOAT_TO_UBYTE(v[0], src[RCOMP]);
UNCLAMPED_FLOAT_TO_UBYTE(v[3], src[ACOMP]);
pack_ubyte_AL88_REV(v, dst);
}
/* MESA_FORMAT_AL1616 */
static void
pack_ubyte_AL1616(const GLubyte src[4], void *dst)
{
GLuint *d = ((GLuint *) dst);
GLushort l = UBYTE_TO_USHORT(src[RCOMP]);
GLushort a = UBYTE_TO_USHORT(src[ACOMP]);
*d = PACK_COLOR_1616(a, l);
}
static void
pack_float_AL1616(const GLfloat src[4], void *dst)
{
GLuint *d = ((GLuint *) dst);
GLushort l, a;
UNCLAMPED_FLOAT_TO_USHORT(l, src[RCOMP]);
UNCLAMPED_FLOAT_TO_USHORT(a, src[ACOMP]);
*d = PACK_COLOR_1616(a, l);
}
/* MESA_FORMAT_AL1616_REV */
static void
pack_ubyte_AL1616_REV(const GLubyte src[4], void *dst)
{
GLuint *d = ((GLuint *) dst);
GLushort l = UBYTE_TO_USHORT(src[RCOMP]);
GLushort a = UBYTE_TO_USHORT(src[ACOMP]);
*d = PACK_COLOR_1616(l, a);
}
static void
pack_float_AL1616_REV(const GLfloat src[4], void *dst)
{
GLuint *d = ((GLuint *) dst);
GLushort l, a;
UNCLAMPED_FLOAT_TO_USHORT(l, src[RCOMP]);
UNCLAMPED_FLOAT_TO_USHORT(a, src[ACOMP]);
*d = PACK_COLOR_1616(l, a);
}
/* MESA_FORMAT_RGB332 */
static void
pack_ubyte_RGB332(const GLubyte src[4], void *dst)
{
GLubyte *d = ((GLubyte *) dst);
*d = PACK_COLOR_332(src[RCOMP], src[GCOMP], src[BCOMP]);
}
static void
pack_float_RGB332(const GLfloat src[4], void *dst)
{
GLubyte v[4];
UNCLAMPED_FLOAT_TO_UBYTE(v[0], src[RCOMP]);
UNCLAMPED_FLOAT_TO_UBYTE(v[1], src[GCOMP]);
UNCLAMPED_FLOAT_TO_UBYTE(v[2], src[BCOMP]);
pack_ubyte_RGB332(v, dst);
}
/* MESA_FORMAT_A8 */
static void
pack_ubyte_A8(const GLubyte src[4], void *dst)
{
GLubyte *d = ((GLubyte *) dst);
*d = src[ACOMP];
}
static void
pack_float_A8(const GLfloat src[4], void *dst)
{
GLubyte *d = ((GLubyte *) dst);
UNCLAMPED_FLOAT_TO_UBYTE(d[0], src[ACOMP]);
}
/* MESA_FORMAT_A16 */
static void
pack_ubyte_A16(const GLubyte src[4], void *dst)
{
GLushort *d = ((GLushort *) dst);
*d = UBYTE_TO_USHORT(src[ACOMP]);
}
static void
pack_float_A16(const GLfloat src[4], void *dst)
{
GLushort *d = ((GLushort *) dst);
UNCLAMPED_FLOAT_TO_USHORT(d[0], src[ACOMP]);
}
/* MESA_FORMAT_L8 */
static void
pack_ubyte_L8(const GLubyte src[4], void *dst)
{
GLubyte *d = ((GLubyte *) dst);
*d = src[RCOMP];
}
static void
pack_float_L8(const GLfloat src[4], void *dst)
{
GLubyte *d = ((GLubyte *) dst);
UNCLAMPED_FLOAT_TO_UBYTE(d[0], src[RCOMP]);
}
/* MESA_FORMAT_L16 */
static void
pack_ubyte_L16(const GLubyte src[4], void *dst)
{
GLushort *d = ((GLushort *) dst);
*d = UBYTE_TO_USHORT(src[RCOMP]);
}
static void
pack_float_L16(const GLfloat src[4], void *dst)
{
GLushort *d = ((GLushort *) dst);
UNCLAMPED_FLOAT_TO_USHORT(d[0], src[RCOMP]);
}
/* MESA_FORMAT_YCBCR */
static void
pack_ubyte_YCBCR(const GLubyte src[4], void *dst)
{
/* todo */
}
static void
pack_float_YCBCR(const GLfloat src[4], void *dst)
{
/* todo */
}
/* MESA_FORMAT_YCBCR_REV */
static void
pack_ubyte_YCBCR_REV(const GLubyte src[4], void *dst)
{
/* todo */
}
static void
pack_float_YCBCR_REV(const GLfloat src[4], void *dst)
{
/* todo */
}
/* MESA_FORMAT_RGBA_16 */
static void
pack_ubyte_RGBA_16(const GLubyte src[4], void *dst)
{
GLushort *d = ((GLushort *) dst);
d[0] = UBYTE_TO_USHORT(src[RCOMP]);
d[1] = UBYTE_TO_USHORT(src[GCOMP]);
d[2] = UBYTE_TO_USHORT(src[BCOMP]);
d[3] = UBYTE_TO_USHORT(src[ACOMP]);
}
static void
pack_float_RGBA_16(const GLfloat src[4], void *dst)
{
GLushort *d = ((GLushort *) dst);
UNCLAMPED_FLOAT_TO_USHORT(d[0], src[RCOMP]);
UNCLAMPED_FLOAT_TO_USHORT(d[1], src[GCOMP]);
UNCLAMPED_FLOAT_TO_USHORT(d[2], src[BCOMP]);
UNCLAMPED_FLOAT_TO_USHORT(d[3], src[ACOMP]);
}
/*
* MESA_FORMAT_SIGNED_RGBA_16
*/
static void
pack_float_SIGNED_RGBA_16(const GLfloat src[4], void *dst)
{
GLshort *d = (GLshort *) dst;
d[0] = FLOAT_TO_SHORT(CLAMP(src[RCOMP], -1.0f, 1.0f));
d[1] = FLOAT_TO_SHORT(CLAMP(src[GCOMP], -1.0f, 1.0f));
d[2] = FLOAT_TO_SHORT(CLAMP(src[BCOMP], -1.0f, 1.0f));
d[3] = FLOAT_TO_SHORT(CLAMP(src[ACOMP], -1.0f, 1.0f));
}
/**
* Return a function that can pack a GLubyte rgba[4] color.
*/
gl_pack_ubyte_rgba_func
_mesa_get_pack_ubyte_rgba_function(gl_format format)
{
static gl_pack_ubyte_rgba_func table[MESA_FORMAT_COUNT];
static GLboolean initialized = GL_FALSE;
if (!initialized) {
memset(table, 0, sizeof(table));
table[MESA_FORMAT_NONE] = NULL;
table[MESA_FORMAT_RGBA8888] = pack_ubyte_RGBA8888;
table[MESA_FORMAT_RGBA8888_REV] = pack_ubyte_RGBA8888_REV;
table[MESA_FORMAT_ARGB8888] = pack_ubyte_ARGB8888;
table[MESA_FORMAT_ARGB8888_REV] = pack_ubyte_ARGB8888_REV;
table[MESA_FORMAT_RGBX8888] = pack_ubyte_RGBA8888; /* reused */
table[MESA_FORMAT_RGBX8888_REV] = pack_ubyte_RGBA8888_REV; /* reused */
table[MESA_FORMAT_XRGB8888] = pack_ubyte_XRGB8888;
table[MESA_FORMAT_XRGB8888_REV] = pack_ubyte_XRGB8888_REV;
table[MESA_FORMAT_RGB888] = pack_ubyte_RGB888;
table[MESA_FORMAT_BGR888] = pack_ubyte_BGR888;
table[MESA_FORMAT_RGB565] = pack_ubyte_RGB565;
table[MESA_FORMAT_RGB565_REV] = pack_ubyte_RGB565_REV;
table[MESA_FORMAT_ARGB4444] = pack_ubyte_ARGB4444;
table[MESA_FORMAT_ARGB4444_REV] = pack_ubyte_ARGB4444_REV;
table[MESA_FORMAT_RGBA5551] = pack_ubyte_RGBA5551;
table[MESA_FORMAT_ARGB1555] = pack_ubyte_ARGB1555;
table[MESA_FORMAT_ARGB1555_REV] = pack_ubyte_ARGB1555_REV;
table[MESA_FORMAT_AL44] = pack_ubyte_AL44;
table[MESA_FORMAT_AL88] = pack_ubyte_AL88;
table[MESA_FORMAT_AL88_REV] = pack_ubyte_AL88_REV;
table[MESA_FORMAT_AL1616] = pack_ubyte_AL1616;
table[MESA_FORMAT_AL1616_REV] = pack_ubyte_AL1616_REV;
table[MESA_FORMAT_RGB332] = pack_ubyte_RGB332;
table[MESA_FORMAT_A8] = pack_ubyte_A8;
table[MESA_FORMAT_A16] = pack_ubyte_A16;
table[MESA_FORMAT_L8] = pack_ubyte_L8;
table[MESA_FORMAT_L16] = pack_ubyte_L16;
table[MESA_FORMAT_I8] = pack_ubyte_L8; /* reuse pack_ubyte_L8 */
table[MESA_FORMAT_I16] = pack_ubyte_L16; /* reuse pack_ubyte_L16 */
table[MESA_FORMAT_YCBCR] = pack_ubyte_YCBCR;
table[MESA_FORMAT_YCBCR_REV] = pack_ubyte_YCBCR_REV;
/* should never convert RGBA to these formats */
table[MESA_FORMAT_Z16] = NULL;
table[MESA_FORMAT_X8_Z24] = NULL;
table[MESA_FORMAT_Z24_X8] = NULL;
table[MESA_FORMAT_Z32] = NULL;
table[MESA_FORMAT_S8] = NULL;
/* n/a */
table[MESA_FORMAT_RGBA_INT8] = NULL; /* pack_ubyte_RGBA_INT8 */
table[MESA_FORMAT_RGBA_INT16] = NULL; /* pack_ubyte_RGBA_INT16 */
table[MESA_FORMAT_RGBA_INT32] = NULL; /* pack_ubyte_RGBA_INT32 */
table[MESA_FORMAT_RGBA_UINT8] = NULL; /* pack_ubyte_RGBA_UINT8 */
table[MESA_FORMAT_RGBA_UINT16] = NULL; /* pack_ubyte_RGBA_UINT16 */
table[MESA_FORMAT_RGBA_UINT32] = NULL; /* pack_ubyte_RGBA_UINT32 */
table[MESA_FORMAT_RGBA_16] = pack_ubyte_RGBA_16;
table[MESA_FORMAT_SIGNED_RGBA_16] = NULL;
table[MESA_FORMAT_RGBA_16] = pack_ubyte_RGBA_16;
initialized = GL_TRUE;
}
return table[format];
}
/**
* Return a function that can pack a GLfloat rgba[4] color.
*/
gl_pack_float_rgba_func
_mesa_get_pack_float_rgba_function(gl_format format)
{
static gl_pack_float_rgba_func table[MESA_FORMAT_COUNT];
static GLboolean initialized = GL_FALSE;
if (!initialized) {
memset(table, 0, sizeof(table));
table[MESA_FORMAT_NONE] = NULL;
table[MESA_FORMAT_RGBA8888] = pack_float_RGBA8888;
table[MESA_FORMAT_RGBA8888_REV] = pack_float_RGBA8888_REV;
table[MESA_FORMAT_ARGB8888] = pack_float_ARGB8888;
table[MESA_FORMAT_ARGB8888_REV] = pack_float_ARGB8888_REV;
table[MESA_FORMAT_RGBX8888] = pack_float_RGBA8888; /* reused */
table[MESA_FORMAT_RGBX8888_REV] = pack_float_RGBA8888_REV; /* reused */
table[MESA_FORMAT_XRGB8888] = pack_float_XRGB8888;
table[MESA_FORMAT_XRGB8888_REV] = pack_float_XRGB8888_REV;
table[MESA_FORMAT_RGB888] = pack_float_RGB888;
table[MESA_FORMAT_BGR888] = pack_float_BGR888;
table[MESA_FORMAT_RGB565] = pack_float_RGB565;
table[MESA_FORMAT_RGB565_REV] = pack_float_RGB565_REV;
table[MESA_FORMAT_ARGB4444] = pack_float_ARGB4444;
table[MESA_FORMAT_ARGB4444_REV] = pack_float_ARGB4444_REV;
table[MESA_FORMAT_RGBA5551] = pack_float_RGBA5551;
table[MESA_FORMAT_ARGB1555] = pack_float_ARGB1555;
table[MESA_FORMAT_ARGB1555_REV] = pack_float_ARGB1555_REV;
table[MESA_FORMAT_AL44] = pack_float_AL44;
table[MESA_FORMAT_AL88] = pack_float_AL88;
table[MESA_FORMAT_AL88_REV] = pack_float_AL88_REV;
table[MESA_FORMAT_AL1616] = pack_float_AL1616;
table[MESA_FORMAT_AL1616_REV] = pack_float_AL1616_REV;
table[MESA_FORMAT_RGB332] = pack_float_RGB332;
table[MESA_FORMAT_A8] = pack_float_A8;
table[MESA_FORMAT_A16] = pack_float_A16;
table[MESA_FORMAT_L8] = pack_float_L8;
table[MESA_FORMAT_L16] = pack_float_L16;
table[MESA_FORMAT_I8] = pack_float_L8; /* reuse pack_float_L8 */
table[MESA_FORMAT_I16] = pack_float_L16; /* reuse pack_float_L16 */
table[MESA_FORMAT_YCBCR] = pack_float_YCBCR;
table[MESA_FORMAT_YCBCR_REV] = pack_float_YCBCR_REV;
/* should never convert RGBA to these formats */
table[MESA_FORMAT_Z16] = NULL;
table[MESA_FORMAT_X8_Z24] = NULL;
table[MESA_FORMAT_Z24_X8] = NULL;
table[MESA_FORMAT_Z32] = NULL;
table[MESA_FORMAT_S8] = NULL;
/* n/a */
table[MESA_FORMAT_RGBA_INT8] = NULL;
table[MESA_FORMAT_RGBA_INT16] = NULL;
table[MESA_FORMAT_RGBA_INT32] = NULL;
table[MESA_FORMAT_RGBA_UINT8] = NULL;
table[MESA_FORMAT_RGBA_UINT16] = NULL;
table[MESA_FORMAT_RGBA_UINT32] = NULL;
table[MESA_FORMAT_RGBA_16] = pack_float_RGBA_16;
table[MESA_FORMAT_SIGNED_RGBA_16] = pack_float_SIGNED_RGBA_16;
initialized = GL_TRUE;
}
return table[format];
}
static pack_float_rgba_row_func
get_pack_float_rgba_row_function(gl_format format)
{
static pack_float_rgba_row_func table[MESA_FORMAT_COUNT];
static GLboolean initialized = GL_FALSE;
if (!initialized) {
/* We don't need a special row packing function for each format.
* There's a generic fallback which uses a per-pixel packing function.
*/
memset(table, 0, sizeof(table));
table[MESA_FORMAT_RGBA8888] = pack_row_float_RGBA8888;
table[MESA_FORMAT_RGBA8888_REV] = pack_row_float_RGBA8888_REV;
table[MESA_FORMAT_ARGB8888] = pack_row_float_ARGB8888;
table[MESA_FORMAT_ARGB8888_REV] = pack_row_float_ARGB8888_REV;
table[MESA_FORMAT_RGBX8888] = pack_row_float_RGBA8888; /* reused */
table[MESA_FORMAT_RGBX8888_REV] = pack_row_float_RGBA8888_REV; /* reused */
table[MESA_FORMAT_XRGB8888] = pack_row_float_XRGB8888;
table[MESA_FORMAT_XRGB8888_REV] = pack_row_float_XRGB8888_REV;
table[MESA_FORMAT_RGB888] = pack_row_float_RGB888;
table[MESA_FORMAT_BGR888] = pack_row_float_BGR888;
table[MESA_FORMAT_RGB565] = pack_row_float_RGB565;
table[MESA_FORMAT_RGB565_REV] = pack_row_float_RGB565_REV;
initialized = GL_TRUE;
}
return table[format];
}
static pack_ubyte_rgba_row_func
get_pack_ubyte_rgba_row_function(gl_format format)
{
static pack_ubyte_rgba_row_func table[MESA_FORMAT_COUNT];
static GLboolean initialized = GL_FALSE;
if (!initialized) {
/* We don't need a special row packing function for each format.
* There's a generic fallback which uses a per-pixel packing function.
*/
memset(table, 0, sizeof(table));
table[MESA_FORMAT_RGBA8888] = pack_row_ubyte_RGBA8888;
table[MESA_FORMAT_RGBA8888_REV] = pack_row_ubyte_RGBA8888_REV;
table[MESA_FORMAT_ARGB8888] = pack_row_ubyte_ARGB8888;
table[MESA_FORMAT_ARGB8888_REV] = pack_row_ubyte_ARGB8888_REV;
table[MESA_FORMAT_RGBX8888] = pack_row_ubyte_RGBA8888; /* reused */
table[MESA_FORMAT_RGBX8888_REV] = pack_row_ubyte_RGBA8888_REV; /* reused */
table[MESA_FORMAT_XRGB8888] = pack_row_ubyte_XRGB8888;
table[MESA_FORMAT_XRGB8888_REV] = pack_row_ubyte_XRGB8888_REV;
table[MESA_FORMAT_RGB888] = pack_row_ubyte_RGB888;
table[MESA_FORMAT_BGR888] = pack_row_ubyte_BGR888;
table[MESA_FORMAT_RGB565] = pack_row_ubyte_RGB565;
table[MESA_FORMAT_RGB565_REV] = pack_row_ubyte_RGB565_REV;
initialized = GL_TRUE;
}
return table[format];
}
/**
* Pack a row of GLfloat rgba[4] values to the destination.
*/
void
_mesa_pack_float_rgba_row(gl_format format, GLuint n,
const GLfloat src[][4], void *dst)
{
pack_float_rgba_row_func packrow = get_pack_float_rgba_row_function(format);
if (packrow) {
/* use "fast" function */
packrow(n, src, dst);
}
else {
/* slower fallback */
gl_pack_float_rgba_func pack = _mesa_get_pack_float_rgba_function(format);
GLuint dstStride = _mesa_get_format_bytes(format);
GLubyte *dstPtr = (GLubyte *) dst;
GLuint i;
assert(pack);
if (!pack)
return;
for (i = 0; i < n; i++) {
pack(src[i], dstPtr);
dstPtr += dstStride;
}
}
}
/**
* Pack a row of GLubyte rgba[4] values to the destination.
*/
void
_mesa_pack_ubyte_rgba_row(gl_format format, GLuint n,
const GLubyte src[][4], void *dst)
{
pack_ubyte_rgba_row_func packrow = get_pack_ubyte_rgba_row_function(format);
if (packrow) {
/* use "fast" function */
packrow(n, src, dst);
}
else {
/* slower fallback */
gl_pack_ubyte_rgba_func pack = _mesa_get_pack_ubyte_rgba_function(format);
const GLuint stride = _mesa_get_format_bytes(format);
GLubyte *d = ((GLubyte *) dst);
GLuint i;
assert(pack);
if (!pack)
return;
for (i = 0; i < n; i++) {
pack(src[i], d);
d += stride;
}
}
}
/**
** Pack float Z pixels
**/
static void
pack_float_z_Z24_S8(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_z_S8_Z24(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_Z16(const GLfloat *src, void *dst)
{
GLushort *d = ((GLushort *) dst);
const GLfloat scale = (GLfloat) 0xffff;
*d = (GLushort) (*src * scale);
}
static void
pack_float_z_Z32(const GLfloat *src, void *dst)
{
GLuint *d = ((GLuint *) dst);
const GLdouble scale = (GLdouble) 0xffffffff;
*d = (GLuint) (*src * scale);
}
gl_pack_float_z_func
_mesa_get_pack_float_z_func(gl_format format)
{
switch (format) {
case MESA_FORMAT_Z24_X8:
return pack_float_z_Z24_S8;
case MESA_FORMAT_X8_Z24:
return pack_float_z_S8_Z24;
case MESA_FORMAT_Z16:
return pack_float_z_Z16;
case MESA_FORMAT_Z32:
return pack_float_z_Z32;
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_z_Z24_S8(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_z_S8_Z24(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_Z16(const GLuint *src, void *dst)
{
GLushort *d = ((GLushort *) dst);
*d = *src >> 16;
}
static void
pack_uint_z_Z32(const GLuint *src, void *dst)
{
GLuint *d = ((GLuint *) dst);
*d = *src;
}
gl_pack_uint_z_func
_mesa_get_pack_uint_z_func(gl_format format)
{
switch (format) {
case MESA_FORMAT_Z24_X8:
return pack_uint_z_Z24_S8;
case MESA_FORMAT_X8_Z24:
return pack_uint_z_S8_Z24;
case MESA_FORMAT_Z16:
return pack_uint_z_Z16;
case MESA_FORMAT_Z32:
return pack_uint_z_Z32;
default:
_mesa_problem(NULL, "unexpected format in _mesa_get_pack_uint_z_func()");
return NULL;
}
}
/**
** Pack ubyte stencil pixels
**/
static void
pack_ubyte_stencil_S8(const GLubyte *src, void *dst)
{
GLubyte *d = (GLubyte *) dst;
*d = *src;
}
gl_pack_ubyte_stencil_func
_mesa_get_pack_ubyte_stencil_func(gl_format format)
{
return pack_ubyte_stencil_S8;
}
void
_mesa_pack_float_z_row(gl_format format, GLuint n,
const GLfloat *src, void *dst)
{
switch (format) {
case MESA_FORMAT_Z24_X8:
{
/* 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_X8_Z24:
{
/* 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_Z16:
{
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_Z32:
{
GLuint *d = ((GLuint *) dst);
const GLdouble scale = (GLdouble) 0xffffffff;
GLuint i;
for (i = 0; i < n; i++) {
d[i] = (GLuint) (src[i] * scale);
}
}
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(gl_format format, GLuint n,
const GLuint *src, void *dst)
{
switch (format) {
case MESA_FORMAT_Z24_X8:
{
/* 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_X8_Z24:
{
/* 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_Z16:
{
GLushort *d = ((GLushort *) dst);
GLuint i;
for (i = 0; i < n; i++) {
d[i] = src[i] >> 16;
}
}
break;
case MESA_FORMAT_Z32:
memcpy(dst, src, n * sizeof(GLfloat));
break;
default:
_mesa_problem(NULL, "unexpected format in _mesa_pack_uint_z_row()");
}
}
void
_mesa_pack_ubyte_stencil_row(gl_format format, GLuint n,
const GLubyte *src, void *dst)
{
memcpy(dst, src, n * sizeof(GLubyte));
}
/**
* 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(gl_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] ? 1.0 : 0.0;
maskColor[1] = colorMask[1] ? 1.0 : 0.0;
maskColor[2] = colorMask[2] ? 1.0 : 0.0;
maskColor[3] = colorMask[3] ? 1.0 : 0.0;
_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] ? 0xffff : 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;
}
}
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