+++ /dev/null
-/*
- * 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;
- }
-}
projects / reactos.git / blobdiff