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/**************************************************************************
*
* 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 DRAW_TESS_H
#define DRAW_TESS_H
#include "draw_context.h"
#include "draw_private.h"
#include "tgsi/tgsi_scan.h"
struct draw_context;
#ifdef DRAW_LLVM_AVAILABLE
#define NUM_PATCH_INPUTS 32
#define NUM_TCS_INPUTS (PIPE_MAX_SHADER_INPUTS - NUM_PATCH_INPUTS)
struct draw_tcs_inputs {
/* num vertices per prim */
float data[32][NUM_TCS_INPUTS][4];
};
struct draw_tcs_outputs {
/* num vertices per prim */
float data[32][PIPE_MAX_SHADER_INPUTS][4];
};
struct draw_tes_inputs {
/* num vertices per prim */
float data[32][PIPE_MAX_SHADER_INPUTS][4];
};
#endif
struct draw_tess_ctrl_shader {
struct draw_context *draw;
struct pipe_shader_state state;
struct tgsi_shader_info info;
unsigned vector_length;
unsigned vertices_out;
unsigned input_vertex_stride;
const float (*input)[4];
const struct tgsi_shader_info *input_info;
#ifdef DRAW_LLVM_AVAILABLE
struct draw_tcs_inputs *tcs_input;
struct draw_tcs_outputs *tcs_output;
struct lp_jit_resources *jit_resources;
struct draw_tcs_llvm_variant *current_variant;
#endif
};
struct draw_tess_eval_shader {
struct draw_context *draw;
struct pipe_shader_state state;
struct tgsi_shader_info info;
enum mesa_prim prim_mode;
unsigned spacing;
unsigned vertex_order_cw;
unsigned point_mode;
unsigned position_output;
unsigned viewport_index_output;
unsigned clipvertex_output;
unsigned ccdistance_output[PIPE_MAX_CLIP_OR_CULL_DISTANCE_ELEMENT_COUNT];
unsigned vector_length;
unsigned input_vertex_stride;
const float (*input)[4];
const struct tgsi_shader_info *input_info;
#ifdef DRAW_LLVM_AVAILABLE
struct draw_tes_inputs *tes_input;
struct lp_jit_resources *jit_resources;
struct draw_tes_llvm_variant *current_variant;
#endif
};
enum mesa_prim get_tes_output_prim(struct draw_tess_eval_shader *shader);
int draw_tess_ctrl_shader_run(struct draw_tess_ctrl_shader *shader,
const struct draw_vertex_info *input_verts,
const struct draw_prim_info *input_prim,
const struct tgsi_shader_info *input_info,
struct draw_vertex_info *output_verts,
struct draw_prim_info *output_prims );
int draw_tess_eval_shader_run(struct draw_tess_eval_shader *shader,
unsigned num_input_vertices_per_patch,
const struct draw_vertex_info *input_verts,
const struct draw_prim_info *input_prim,
const struct tgsi_shader_info *input_info,
struct draw_vertex_info *output_verts,
struct draw_prim_info *output_prims,
uint16_t **elts_out);
#ifdef DRAW_LLVM_AVAILABLE
void draw_tcs_set_current_variant(struct draw_tess_ctrl_shader *shader,
struct draw_tcs_llvm_variant *variant);
void draw_tes_set_current_variant(struct draw_tess_eval_shader *shader,
struct draw_tes_llvm_variant *variant);
#endif
#endif
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