76 lines
2.4 KiB
C
76 lines
2.4 KiB
C
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/**************************************************************************
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*
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* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/**
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* glReadPixels interface to pipe
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*
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* \author Brian Paul
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*/
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#include "main/imports.h"
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#include "main/context.h"
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#include "pipe/p_context.h"
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#include "pipe/p_defines.h"
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#include "st_context.h"
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#include "st_cb_readpixels.h"
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#include "st_cb_fbo.h"
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#include "st_format.h"
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#include "st_public.h"
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static void
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st_readpixels(GLcontext *ctx, GLint x, GLint y, GLsizei width, GLsizei height,
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GLenum format, GLenum type,
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const struct gl_pixelstore_attrib *unpack,
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GLvoid *dest)
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{
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struct pipe_context *pipe = ctx->st->pipe;
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if (format == GL_RGBA && type == GL_FLOAT) {
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struct st_renderbuffer *strb
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= st_renderbuffer(ctx->ReadBuffer->_ColorReadBuffer);
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if (!strb)
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return;
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pipe->region_map(pipe, strb->surface->region);
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strb->surface->get_tile(strb->surface, x, y, width, height, dest);
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pipe->region_unmap(pipe, strb->surface->region);
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}
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else {
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assert(0);
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}
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}
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void st_init_readpixels_functions(struct dd_function_table *functions)
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{
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functions->ReadPixels = st_readpixels;
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}
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