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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.
*
**************************************************************************/
/**
* glBegin/EndQuery interface to pipe
*
* \author Brian Paul
*/
#include "main/imports.h"
#include "main/context.h"
#include "main/image.h"
#include "pipe/p_context.h"
#include "pipe/p_defines.h"
#include "st_context.h"
#include "st_cb_queryobj.h"
#include "st_public.h"
/**
* Do glReadPixels by getting rows from the framebuffer surface with
* get_tile(). Convert to requested format/type with Mesa image routines.
* Image transfer ops are done in software too.
*/
static void
st_BeginQuery(GLcontext *ctx, GLenum target, struct gl_query_object *q)
{
struct pipe_context *pipe = ctx->st->pipe;
if (target == GL_SAMPLES_PASSED_ARB) {
pipe->reset_occlusion_counter(pipe);
}
}
static void
st_EndQuery(GLcontext *ctx, GLenum target, struct gl_query_object *q)
{
struct pipe_context *pipe = ctx->st->pipe;
if (target == GL_SAMPLES_PASSED_ARB) {
q->Result = pipe->get_occlusion_counter(pipe);
}
}
void st_init_query_functions(struct dd_function_table *functions)
{
functions->BeginQuery = st_BeginQuery;
functions->EndQuery = st_EndQuery;
}
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