slang_process.h

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/* RetroArch - A frontend fror libretro.
 * Copyright (C) 2014-2018 - Ali Bouhlel
 *
 * RetroArch is free software: you can redistribute it and/or modify it under the terms
 * of the GNU General Public License as published by the Free Software Found-
 * ation, either version 3 of the License, or (at your option) any later version.
 *
 * RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 * PURPOSE. See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with RetroArch.
 * If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef __GLSLANG_PROCESS_H__
#define __GLSLANG_PROCESS_H__

#include <stdint.h>
#include <boolean.h>
#include <retro_common_api.h>

#include "../video_shader_parse.h"
#include "slang_reflection.h"
#include "glslang_util.h"

typedef struct
{
 void* ptr;
 size_t stride;
} data_map_t;

typedef struct
{
 void* image;
 size_t image_stride;
 void* size;
 size_t size_stride;
} texture_map_t;

typedef struct
{
 texture_map_t textures[SLANG_NUM_TEXTURE_SEMANTICS];
 void* uniforms[SLANG_NUM_BASE_SEMANTICS];
} semantics_map_t;

typedef struct
{
 void* data;
 unsigned size;
 unsigned offset;
 char id[64];
} uniform_sem_t;

typedef struct
{
 void* texture_data;
 enum gfx_wrap_type wrap;
 unsigned filter;
 unsigned stage_mask;
 unsigned binding;
 char id[64];
} texture_sem_t;

typedef struct
{
 unsigned stage_mask;
 unsigned binding;
 unsigned size;
 int uniform_count;
 uniform_sem_t* uniforms;
} cbuffer_sem_t;

typedef struct
{
 int texture_count;
 texture_sem_t* textures;
 cbuffer_sem_t cbuffers[SLANG_CBUFFER_MAX];
 glslang_format format;
} pass_semantics_t;

#define SLANG_STAGE_VERTEX_MASK (1 << 0)
#define SLANG_STAGE_FRAGMENT_MASK (1 << 1)

RETRO_BEGIN_DECLS

bool slang_process(
 struct video_shader* shader_info,
 unsigned pass_number,
 enum rarch_shader_type dst_type,
 unsigned version,
 const semantics_map_t* semantics_map,
 pass_semantics_t* out);

RETRO_END_DECLS

#endif