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/**************************************************************************
*
* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* 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, sub license, 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 (including the
* next paragraph) 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 NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.
*
**************************************************************************/
#include "sp_context.h"
#include "sp_state.h"
#include "sp_surface.h"
#include "pipe/p_defines.h"
#include "main/imports.h"
/**
* Softpipe surface functions.
* Basically, create surface of a particular type, then plug in default
* read/write_quad functions.
* Note that these quad funcs assume the buffer/region is in a linear
* layout with Y=0=bottom.
* If we had swizzled/AOS buffers the read/write functions could be
* simplified a lot....
*/
#if 000 /* OLD... should be recycled... */
static void rgba8_read_quad_f( struct softpipe_surface *gs,
GLint x, GLint y,
GLfloat (*rgba)[NUM_CHANNELS] )
{
GLuint i, j, k = 0;
for (i = 0; i < 2; i++) {
for (j = 0; j < 2; j++, k++) {
GLubyte *ptr = gs->surface.ptr + (y+i) * gs->surface.stride + (x+j) * 4;
rgba[k][0] = ptr[0] * (1.0 / 255.0);
rgba[k][1] = ptr[1] * (1.0 / 255.0);
rgba[k][2] = ptr[2] * (1.0 / 255.0);
rgba[k][3] = ptr[3] * (1.0 / 255.0);
}
}
}
static void rgba8_read_quad_f_swz( struct softpipe_surface *gs,
GLint x, GLint y,
GLfloat (*rrrr)[QUAD_SIZE] )
{
GLuint i, j, k = 0;
for (i = 0; i < 2; i++) {
for (j = 0; j < 2; j++, k++) {
GLubyte *ptr = gs->surface.ptr + (y+i) * gs->surface.stride + (x+j) * 4;
rrrr[0][k] = ptr[0] * (1.0 / 255.0);
rrrr[1][k] = ptr[1] * (1.0 / 255.0);
rrrr[2][k] = ptr[2] * (1.0 / 255.0);
rrrr[3][k] = ptr[3] * (1.0 / 255.0);
}
}
}
static void rgba8_write_quad_f( struct softpipe_surface *gs,
GLint x, GLint y,
GLfloat (*rgba)[NUM_CHANNELS] )
{
GLuint i, j, k = 0;
for (i = 0; i < 2; i++) {
for (j = 0; j < 2; j++, k++) {
GLubyte *ptr = gs->surface.ptr + (y+i) * gs->surface.stride + (x+j) * 4;
ptr[0] = rgba[k][0] * 255.0;
ptr[1] = rgba[k][1] * 255.0;
ptr[2] = rgba[k][2] * 255.0;
ptr[3] = rgba[k][3] * 255.0;
}
}
}
static void rgba8_write_quad_f_swz( struct softpipe_surface *gs,
GLint x, GLint y,
GLfloat (*rrrr)[QUAD_SIZE] )
{
GLuint i, j, k = 0;
for (i = 0; i < 2; i++) {
for (j = 0; j < 2; j++, k++) {
GLubyte *ptr = gs->surface.ptr + (y+i) * gs->surface.stride + (x+j) * 4;
ptr[0] = rrrr[0][k] * 255.0;
ptr[1] = rrrr[1][k] * 255.0;
ptr[2] = rrrr[2][k] * 255.0;
ptr[3] = rrrr[3][k] * 255.0;
}
}
}
static void rgba8_read_quad_ub( struct softpipe_surface *gs,
GLint x, GLint y,
GLubyte (*rgba)[NUM_CHANNELS] )
{
GLuint i, j, k = 0;
for (i = 0; i < 2; i++) {
for (j = 0; j < 2; j++, k++) {
GLubyte *ptr = gs->surface.ptr + (y+i) * gs->surface.stride + (x+j) * 4;
rgba[k][0] = ptr[0];
rgba[k][1] = ptr[1];
rgba[k][2] = ptr[2];
rgba[k][3] = ptr[3];
}
}
}
static void rgba8_write_quad_ub( struct softpipe_surface *gs,
GLint x, GLint y,
GLubyte (*rgba)[NUM_CHANNELS] )
{
GLuint i, j, k = 0;
for (i = 0; i < 2; i++) {
for (j = 0; j < 2; j++, k++) {
GLubyte *ptr = gs->surface.ptr + (y+i) * gs->surface.stride + (x+j) * 4;
ptr[0] = rgba[k][0];
ptr[1] = rgba[k][1];
ptr[2] = rgba[k][2];
ptr[3] = rgba[k][3];
}
}
}
#endif
static void
z16_read_quad_z(struct softpipe_surface *sps,
GLint x, GLint y, GLuint zzzz[QUAD_SIZE])
{
const GLushort *src
= (GLushort *) sps->surface.region->map + y * sps->surface.region->pitch + x;
assert(sps->surface.format == PIPE_FORMAT_U_Z16);
/* converting GLushort to GLuint: */
zzzz[0] = src[0];
zzzz[1] = src[1];
src += sps->surface.region->pitch;
zzzz[2] = src[0];
zzzz[3] = src[1];
}
static void
z16_write_quad_z(struct softpipe_surface *sps,
GLint x, GLint y, const GLuint zzzz[QUAD_SIZE])
{
GLushort *dst = (GLushort *) sps->surface.region->map + y * sps->surface.region->pitch + x;
assert(sps->surface.format == PIPE_FORMAT_U_Z16);
/* converting GLuint to GLushort: */
dst[0] = zzzz[0];
dst[1] = zzzz[1];
dst += sps->surface.region->pitch;
dst[0] = zzzz[2];
dst[1] = zzzz[3];
}
static void
z32_read_quad_z(struct softpipe_surface *sps,
GLint x, GLint y, GLuint zzzz[QUAD_SIZE])
{
const GLuint *src
= (GLuint *) sps->surface.region->map + y * sps->surface.region->pitch + x;
assert(sps->surface.format == PIPE_FORMAT_U_Z32);
zzzz[0] = src[0];
zzzz[1] = src[1];
src += sps->surface.region->pitch;
zzzz[2] = src[0];
zzzz[3] = src[1];
}
static void
z32_write_quad_z(struct softpipe_surface *sps,
GLint x, GLint y, const GLuint zzzz[QUAD_SIZE])
{
GLuint *dst = (GLuint *) sps->surface.region->map + y * sps->surface.region->pitch + x;
assert(sps->surface.format == PIPE_FORMAT_U_Z32);
dst[0] = zzzz[0];
dst[1] = zzzz[1];
dst += sps->surface.region->pitch;
dst[0] = zzzz[2];
dst[1] = zzzz[3];
}
static void
s8z24_read_quad_z(struct softpipe_surface *sps,
GLint x, GLint y, GLuint zzzz[QUAD_SIZE])
{
static const GLuint mask = 0x00ffffff;
const GLuint *src
= (GLuint *) sps->surface.region->map + y * sps->surface.region->pitch + x;
assert(sps->surface.format == PIPE_FORMAT_S8_Z24);
zzzz[0] = src[0] & mask;
zzzz[1] = src[1] & mask;
src += sps->surface.region->pitch;
zzzz[2] = src[0] & mask;
zzzz[3] = src[1] & mask;
}
static void
s8z24_write_quad_z(struct softpipe_surface *sps,
GLint x, GLint y, const GLuint zzzz[QUAD_SIZE])
{
static const GLuint mask = 0xff000000;
GLuint *dst = (GLuint *) sps->surface.region->map + y * sps->surface.region->pitch + x;
assert(sps->surface.format == PIPE_FORMAT_S8_Z24);
assert(zzzz[0] <= 0xffffff);
dst[0] = (dst[0] & mask) | zzzz[0];
dst[1] = (dst[1] & mask) | zzzz[1];
dst += sps->surface.region->pitch;
dst[0] = (dst[0] & mask) | zzzz[2];
dst[1] = (dst[1] & mask) | zzzz[3];
}
static void
s8z24_read_quad_stencil(struct softpipe_surface *sps,
GLint x, GLint y, GLubyte ssss[QUAD_SIZE])
{
const GLuint *src
= (GLuint *) sps->surface.region->map + y * sps->surface.region->pitch + x;
assert(sps->surface.format == PIPE_FORMAT_S8_Z24);
ssss[0] = src[0] >> 24;
ssss[1] = src[1] >> 24;
src += sps->surface.region->pitch;
ssss[2] = src[0] >> 24;
ssss[3] = src[1] >> 24;
}
static void
s8z24_write_quad_stencil(struct softpipe_surface *sps,
GLint x, GLint y, const GLubyte ssss[QUAD_SIZE])
{
static const GLuint mask = 0x00ffffff;
GLuint *dst = (GLuint *) sps->surface.region->map + y * sps->surface.region->pitch + x;
assert(sps->surface.format == PIPE_FORMAT_S8_Z24);
dst[0] = (dst[0] & mask) | (ssss[0] << 24);
dst[1] = (dst[1] & mask) | (ssss[1] << 24);
dst += sps->surface.region->pitch;
dst[0] = (dst[0] & mask) | (ssss[2] << 24);
dst[1] = (dst[1] & mask) | (ssss[3] << 24);
}
static void
s8_read_quad_stencil(struct softpipe_surface *sps,
GLint x, GLint y, GLubyte ssss[QUAD_SIZE])
{
const GLubyte *src
= sps->surface.region->map + y * sps->surface.region->pitch + x;
assert(sps->surface.format == PIPE_FORMAT_U_S8);
ssss[0] = src[0];
ssss[1] = src[1];
src += sps->surface.region->pitch;
ssss[2] = src[0];
ssss[3] = src[1];
}
static void
s8_write_quad_stencil(struct softpipe_surface *sps,
GLint x, GLint y, const GLubyte ssss[QUAD_SIZE])
{
GLubyte *dst
= sps->surface.region->map + y * sps->surface.region->pitch + x;
assert(sps->surface.format == PIPE_FORMAT_U_S8);
dst[0] = ssss[0];
dst[1] = ssss[1];
dst += sps->surface.region->pitch;
dst[0] = ssss[2];
dst[1] = ssss[3];
}
static void
init_quad_funcs(struct softpipe_surface *sps)
{
switch (sps->surface.format) {
case PIPE_FORMAT_U_Z16:
sps->read_quad_z = z16_read_quad_z;
sps->write_quad_z = z16_write_quad_z;
break;
case PIPE_FORMAT_U_Z32:
sps->read_quad_z = z32_read_quad_z;
sps->write_quad_z = z32_write_quad_z;
break;
case PIPE_FORMAT_S8_Z24:
sps->read_quad_z = s8z24_read_quad_z;
sps->write_quad_z = s8z24_write_quad_z;
sps->read_quad_stencil = s8z24_read_quad_stencil;
sps->write_quad_stencil = s8z24_write_quad_stencil;
break;
case PIPE_FORMAT_U_S8:
sps->read_quad_stencil = s8_read_quad_stencil;
sps->write_quad_stencil = s8_write_quad_stencil;
break;
default:
assert(0);
}
}
static struct pipe_surface *
sp_surface_alloc(struct pipe_context *pipe, GLenum format)
{
struct softpipe_surface *sps = CALLOC_STRUCT(softpipe_surface);
if (!sps)
return NULL;
sps->surface.format = format;
init_quad_funcs(sps);
return &sps->surface;
}
void
sp_init_surface_functions(struct softpipe_context *sp)
{
sp->pipe.surface_alloc = sp_surface_alloc;
}
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