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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 "main/imports.h"
#include "main/macros.h"
struct i915_surface
{
struct pipe_surface surface;
/* anything else? */
};
/**
* Note: this is exactly like a8r8g8b8_get_tile() in sp_surface.c
* Share it someday.
*/
static void
i915_get_tile(struct pipe_surface *ps,
GLuint x, GLuint y, GLuint w, GLuint h, GLfloat *p)
{
const GLuint *src
= ((const GLuint *) (ps->region->map + ps->offset))
+ y * ps->region->pitch + x;
GLuint i, j;
GLuint w0 = w;
assert(ps->format == PIPE_FORMAT_U_A8_R8_G8_B8);
#if 0
assert(x + w <= ps->width);
assert(y + h <= ps->height);
#else
/* temp clipping hack */
if (x + w > ps->width)
w = ps->width - x;
if (y + h > ps->height)
h = ps->height -y;
#endif
for (i = 0; i < h; i++) {
GLfloat *pRow = p;
for (j = 0; j < w; j++) {
const GLuint 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;
}
}
static void
i915_put_tile(struct pipe_surface *ps,
GLuint x, GLuint y, GLuint w, GLuint h, const GLfloat *p)
{
/* any need to put tiles into i915 surfaces? */
assert(0);
}
static struct pipe_surface *
i915_surface_alloc(struct pipe_context *pipe, GLuint format)
{
struct i915_surface *surf = CALLOC_STRUCT(i915_surface);
if (!surf)
return NULL;
surf->surface.format = format;
surf->surface.refcount = 1;
surf->surface.get_tile = i915_get_tile;
surf->surface.put_tile = i915_put_tile;
return &surf->surface;
}
void
i915_init_surface_functions(struct i915_context *i915)
{
i915->pipe.surface_alloc = i915_surface_alloc;
}
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