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/**************************************************************************
*
* Copyright 2008 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 VMWARE 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.
*
**************************************************************************/
#ifndef U_DRAW_H
#define U_DRAW_H
#include "pipe/p_compiler.h"
#include "pipe/p_context.h"
#include "pipe/p_state.h"
#ifdef __cplusplus
extern "C" {
#endif
static inline void
util_draw_init_info(struct pipe_draw_info *info)
{
memset(info, 0, sizeof(*info));
info->instance_count = 1;
info->max_index = 0xffffffff;
}
static inline void
util_draw_arrays(struct pipe_context *pipe, uint mode, uint start, uint count)
{
struct pipe_draw_info info;
util_draw_init_info(&info);
info.mode = mode;
info.start = start;
info.count = count;
info.min_index = start;
info.max_index = start + count - 1;
pipe->draw_vbo(pipe, &info);
}
static inline void
util_draw_elements(struct pipe_context *pipe, int index_bias,
uint mode, uint start, uint count)
{
struct pipe_draw_info info;
util_draw_init_info(&info);
info.indexed = TRUE;
info.mode = mode;
info.start = start;
info.count = count;
info.index_bias = index_bias;
pipe->draw_vbo(pipe, &info);
}
static inline void
util_draw_arrays_instanced(struct pipe_context *pipe,
uint mode, uint start, uint count,
uint start_instance,
uint instance_count)
{
struct pipe_draw_info info;
util_draw_init_info(&info);
info.mode = mode;
info.start = start;
info.count = count;
info.start_instance = start_instance;
info.instance_count = instance_count;
info.min_index = start;
info.max_index = start + count - 1;
pipe->draw_vbo(pipe, &info);
}
static inline void
util_draw_elements_instanced(struct pipe_context *pipe,
int index_bias,
uint mode, uint start, uint count,
uint start_instance,
uint instance_count)
{
struct pipe_draw_info info;
util_draw_init_info(&info);
info.indexed = TRUE;
info.mode = mode;
info.start = start;
info.count = count;
info.index_bias = index_bias;
info.start_instance = start_instance;
info.instance_count = instance_count;
pipe->draw_vbo(pipe, &info);
}
static inline void
util_draw_range_elements(struct pipe_context *pipe,
int index_bias,
uint min_index,
uint max_index,
uint mode, uint start, uint count)
{
struct pipe_draw_info info;
util_draw_init_info(&info);
info.indexed = TRUE;
info.mode = mode;
info.start = start;
info.count = count;
info.index_bias = index_bias;
info.min_index = min_index;
info.max_index = max_index;
pipe->draw_vbo(pipe, &info);
}
/* This converts an indirect draw into a direct draw by mapping the indirect
* buffer, extracting its arguments, and calling pipe->draw_vbo.
*/
void
util_draw_indirect(struct pipe_context *pipe,
const struct pipe_draw_info *info);
unsigned
util_draw_max_index(
const struct pipe_vertex_buffer *vertex_buffers,
const struct pipe_vertex_element *vertex_elements,
unsigned nr_vertex_elements,
const struct pipe_draw_info *info);
#ifdef __cplusplus
}
#endif
#endif /* !U_DRAW_H */
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