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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 "i915_context.h"
#include "i915_state.h"
#include "pipe/p_defines.h"
#include "pipe/p_util.h"
#include "pipe/p_winsys.h"
#define CLIP_TILE \
do { \
if (x >= ps->width) \
return; \
if (y >= ps->height) \
return; \
if (x + w > ps->width) \
w = ps->width - x; \
if (y + h > ps->height) \
h = ps->height -y; \
} while(0)
/**
* Note: this is exactly like a8r8g8b8_get_tile() in sp_surface.c
* Share it someday.
*/
static void
i915_get_tile_rgba(struct pipe_context *pipe,
struct pipe_surface *ps,
uint x, uint y, uint w, uint h, float *p)
{
const unsigned *src
= ((const unsigned *) (ps->region->map + ps->offset))
+ y * ps->region->pitch + x;
unsigned i, j;
unsigned w0 = w;
CLIP_TILE;
switch (ps->format) {
case PIPE_FORMAT_U_A8_R8_G8_B8:
for (i = 0; i < h; i++) {
float *pRow = p;
for (j = 0; j < w; j++) {
const unsigned pixel = src[j];
pRow[0] = UBYTE_TO_FLOAT((pixel >> 16) & 0xff);
pRow[1] = UBYTE_TO_FLOAT((pixel >> 8) & 0xff);
pRow[2] = UBYTE_TO_FLOAT((pixel >> 0) & 0xff);
pRow[3] = UBYTE_TO_FLOAT((pixel >> 24) & 0xff);
pRow += 4;
}
src += ps->region->pitch;
p += w0 * 4;
}
break;
case PIPE_FORMAT_S8_Z24:
{
const float scale = 1.0 / (float) 0xffffff;
for (i = 0; i < h; i++) {
float *pRow = p;
for (j = 0; j < w; j++) {
const unsigned pixel = src[j];
pRow[0] =
pRow[1] =
pRow[2] =
pRow[3] = (pixel & 0xffffff) * scale;
pRow += 4;
}
src += ps->region->pitch;
p += w0 * 4;
}
}
break;
default:
assert(0);
}
}
static void
i915_put_tile_rgba(struct pipe_context *pipe,
struct pipe_surface *ps,
uint x, uint y, uint w, uint h, const float *p)
{
/* TODO */
assert(0);
}
/*
* XXX note: same as code in sp_surface.c
*/
static void
i915_get_tile(struct pipe_context *pipe,
struct pipe_surface *ps,
uint x, uint y, uint w, uint h,
void *p, int dst_stride)
{
const uint cpp = ps->region->cpp;
const uint w0 = w;
const ubyte *pSrc;
ubyte *pDest;
uint i;
assert(ps->region->map);
CLIP_TILE;
if (dst_stride == 0) {
dst_stride = w0 * cpp;
}
pSrc = ps->region->map + ps->offset + (y * ps->region->pitch + x) * cpp;
pDest = (ubyte *) p;
for (i = 0; i < h; i++) {
memcpy(pDest, pSrc, w0 * cpp);
pDest += dst_stride;
pSrc += ps->region->pitch * cpp;
}
}
/*
* XXX note: same as code in sp_surface.c
*/
static void
i915_put_tile(struct pipe_context *pipe,
struct pipe_surface *ps,
uint x, uint y, uint w, uint h,
const void *p, int src_stride)
{
const uint cpp = ps->region->cpp;
const uint w0 = w;
const ubyte *pSrc;
ubyte *pDest;
uint i;
assert(ps->region->map);
CLIP_TILE;
if (src_stride == 0) {
src_stride = w0 * cpp;
}
pSrc = (const ubyte *) p;
pDest = ps->region->map + ps->offset + (y * ps->region->pitch + x) * cpp;
for (i = 0; i < h; i++) {
memcpy(pDest, pSrc, w0 * cpp);
pDest += ps->region->pitch * cpp;
pSrc += src_stride;
}
}
/*
* XXX note: same as code in sp_surface.c
*/
static struct pipe_surface *
i915_get_tex_surface(struct pipe_context *pipe,
struct pipe_mipmap_tree *mt,
unsigned face, unsigned level, unsigned zslice)
{
struct pipe_surface *ps;
unsigned offset; /* in bytes */
offset = mt->level[level].level_offset;
if (mt->target == PIPE_TEXTURE_CUBE) {
offset += mt->level[level].image_offset[face] * mt->cpp;
}
else if (mt->target == PIPE_TEXTURE_3D) {
offset += mt->level[level].image_offset[zslice] * mt->cpp;
}
else {
assert(face == 0);
assert(zslice == 0);
}
ps = pipe->winsys->surface_alloc(pipe->winsys, mt->format);
if (ps) {
assert(ps->format);
assert(ps->refcount);
pipe_region_reference(&ps->region, mt->region);
ps->width = mt->level[level].width;
ps->height = mt->level[level].height;
ps->offset = offset;
}
return ps;
}
void
i915_init_surface_functions(struct i915_context *i915)
{
i915->pipe.get_tex_surface = i915_get_tex_surface;
i915->pipe.get_tile = i915_get_tile;
i915->pipe.put_tile = i915_put_tile;
i915->pipe.get_tile_rgba = i915_get_tile_rgba;
i915->pipe.put_tile_rgba = i915_put_tile_rgba;
}
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