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/**************************************************************************
*
* Copyright 2007 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.
*
**************************************************************************/
/**
* glReadPixels interface to pipe
*
* \author Brian Paul
*/
#include "main/imports.h"
#include "main/context.h"
#include "pipe/p_context.h"
#include "pipe/p_defines.h"
#include "st_context.h"
#include "st_cb_readpixels.h"
#include "st_cb_fbo.h"
#include "st_format.h"
#include "st_public.h"
static void
st_readpixels(GLcontext *ctx, GLint x, GLint y, GLsizei width, GLsizei height,
GLenum format, GLenum type,
const struct gl_pixelstore_attrib *unpack,
GLvoid *dest)
{
struct pipe_context *pipe = ctx->st->pipe;
if (format == GL_RGBA && type == GL_FLOAT) {
struct st_renderbuffer *strb
= st_renderbuffer(ctx->ReadBuffer->_ColorReadBuffer);
if (!strb)
return;
pipe->region_map(pipe, strb->surface->region);
strb->surface->get_tile(strb->surface, x, y, width, height, dest);
pipe->region_unmap(pipe, strb->surface->region);
}
else {
assert(0);
}
}
void st_init_readpixels_functions(struct dd_function_table *functions)
{
functions->ReadPixels = st_readpixels;
}
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