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/**************************************************************************
*
* Copyright 2010 VMware, Inc.
* 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 THE AUTHORS 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.
*
**************************************************************************/
/**
* Transform feedback functions.
*
* \author Brian Paul
*/
#include "main/imports.h"
#include "main/context.h"
#include "main/mfeatures.h"
#include "main/transformfeedback.h"
#include "st_cb_xformfb.h"
#if FEATURE_EXT_transform_feedback
#if 0
static struct gl_transform_feedback_object *
st_new_transform_feedback(struct gl_context *ctx, GLuint name)
{
struct gl_transform_feedback_object *obj;
obj = CALLOC_STRUCT(gl_transform_feedback_object);
if (obj) {
obj->Name = name;
obj->RefCount = 1;
}
return obj;
}
#endif
#if 0
static void
st_delete_transform_feedback(struct gl_context *ctx,
struct gl_transform_feedback_object *obj)
{
GLuint i;
for (i = 0; i < Elements(obj->Buffers); i++) {
_mesa_reference_buffer_object(ctx, &obj->Buffers[i], NULL);
}
free(obj);
}
#endif
static void
st_begin_transform_feedback(struct gl_context *ctx, GLenum mode,
struct gl_transform_feedback_object *obj)
{
/* to-do */
}
static void
st_end_transform_feedback(struct gl_context *ctx,
struct gl_transform_feedback_object *obj)
{
/* to-do */
}
static void
st_pause_transform_feedback(struct gl_context *ctx,
struct gl_transform_feedback_object *obj)
{
/* to-do */
}
static void
st_resume_transform_feedback(struct gl_context *ctx,
struct gl_transform_feedback_object *obj)
{
/* to-do */
}
static void
st_draw_transform_feedback(struct gl_context *ctx, GLenum mode,
struct gl_transform_feedback_object *obj)
{
/* XXX to do */
/*
* Get number of vertices in obj's feedback buffer.
* Call ctx->Exec.DrawArrays(mode, 0, count);
*/
}
void
st_init_xformfb_functions(struct dd_function_table *functions)
{
/* let core Mesa plug in its functions */
_mesa_init_transform_feedback_functions(functions);
/* then override a few: */
functions->BeginTransformFeedback = st_begin_transform_feedback;
functions->EndTransformFeedback = st_end_transform_feedback;
functions->PauseTransformFeedback = st_pause_transform_feedback;
functions->ResumeTransformFeedback = st_resume_transform_feedback;
functions->DrawTransformFeedback = st_draw_transform_feedback;
}
#endif /* FEATURE_EXT_transform_feedback */
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