70 lines
2.4 KiB
C
70 lines
2.4 KiB
C
/**************************************************************************
|
|
*
|
|
* Copyright 2020 Red Hat.
|
|
* 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, sublicense,
|
|
* 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 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 NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS 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 PIPE_TESSELLATOR_H
|
|
#define PIPE_TESSELLATOR_H
|
|
|
|
#include "pipe/p_defines.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
struct pipe_tessellator;
|
|
struct pipe_tessellation_factors
|
|
{
|
|
float outer_tf[4];
|
|
float inner_tf[2];
|
|
float pad[2];
|
|
};
|
|
|
|
struct pipe_tessellator_data
|
|
{
|
|
uint32_t num_indices;
|
|
uint32_t num_domain_points;
|
|
|
|
uint32_t *indices;
|
|
float *domain_points_u;
|
|
float *domain_points_v;
|
|
// For Tri: domain_points_w[i] = 1.0f - domain_points_u[i] - domain_points_v[i]
|
|
};
|
|
|
|
/// Allocate and initialize a new tessellation context
|
|
struct pipe_tessellator *p_tess_init(enum pipe_prim_type tes_prim_mode,
|
|
enum pipe_tess_spacing spacing,
|
|
bool tes_vertex_order_cw, bool tes_point_mode);
|
|
/// Destroy & de-allocate tessellation context
|
|
void p_tess_destroy(struct pipe_tessellator *pipe_ts);
|
|
|
|
|
|
/// Perform Tessellation
|
|
void p_tessellate(struct pipe_tessellator *pipe_ts,
|
|
const struct pipe_tessellation_factors *tess_factors,
|
|
struct pipe_tessellator_data *tess_data);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
#endif
|