mirror of
https://github.com/libretro/RetroArch.git
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236 lines
5.7 KiB
C
236 lines
5.7 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
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* Copyright (C) 2011-2016 - Daniel De Matteis
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __VIDEO_SHADER_PARSE_H
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#define __VIDEO_SHADER_PARSE_H
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#include "video_state_tracker.h"
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#include <boolean.h>
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#include <retro_common_api.h>
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#include <retro_miscellaneous.h>
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#include <file/config_file.h>
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RETRO_BEGIN_DECLS
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#ifndef GFX_MAX_SHADERS
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#define GFX_MAX_SHADERS 26
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#endif
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#ifndef GFX_MAX_TEXTURES
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#define GFX_MAX_TEXTURES 8
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#endif
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#ifndef GFX_MAX_VARIABLES
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#define GFX_MAX_VARIABLES 64
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#endif
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#ifndef GFX_MAX_PARAMETERS
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#define GFX_MAX_PARAMETERS 128
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#endif
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enum rarch_shader_type
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{
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RARCH_SHADER_NONE = 0,
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RARCH_SHADER_CG,
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RARCH_SHADER_HLSL,
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RARCH_SHADER_GLSL,
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RARCH_SHADER_SLANG
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};
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enum gfx_scale_type
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{
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RARCH_SCALE_INPUT = 0,
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RARCH_SCALE_ABSOLUTE,
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RARCH_SCALE_VIEWPORT
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};
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enum
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{
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RARCH_FILTER_UNSPEC = 0,
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RARCH_FILTER_LINEAR,
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RARCH_FILTER_NEAREST
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};
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enum gfx_wrap_type
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{
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RARCH_WRAP_BORDER = 0, /* Kinda deprecated, but keep as default.
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Will be translated to EDGE in GLES. */
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RARCH_WRAP_DEFAULT = RARCH_WRAP_BORDER,
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RARCH_WRAP_EDGE,
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RARCH_WRAP_REPEAT,
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RARCH_WRAP_MIRRORED_REPEAT
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};
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struct gfx_fbo_scale
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{
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enum gfx_scale_type type_x;
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enum gfx_scale_type type_y;
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float scale_x;
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float scale_y;
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unsigned abs_x;
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unsigned abs_y;
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bool fp_fbo;
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bool srgb_fbo;
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bool valid;
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};
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struct video_shader_parameter
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{
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char id[64];
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char desc[64];
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float current;
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float minimum;
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float initial;
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float maximum;
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float step;
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};
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struct video_shader_pass
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{
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struct
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{
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char path[PATH_MAX_LENGTH];
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struct
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{
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char *vertex; /* Dynamically allocated. Must be free'd. */
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char *fragment; /* Dynamically allocated. Must be free'd. */
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} string;
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} source;
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char alias[64];
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struct gfx_fbo_scale fbo;
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unsigned filter;
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enum gfx_wrap_type wrap;
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unsigned frame_count_mod;
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bool mipmap;
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};
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struct video_shader_lut
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{
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char id[64];
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char path[PATH_MAX_LENGTH];
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unsigned filter;
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enum gfx_wrap_type wrap;
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bool mipmap;
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};
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/* This is pretty big, shouldn't be put on the stack.
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* Avoid lots of allocation for convenience. */
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struct video_shader
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{
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enum rarch_shader_type type;
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bool modern; /* Only used for XML shaders. */
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char prefix[64];
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unsigned passes;
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struct video_shader_pass pass[GFX_MAX_SHADERS];
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unsigned luts;
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struct video_shader_lut lut[GFX_MAX_TEXTURES];
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struct video_shader_parameter parameters[GFX_MAX_PARAMETERS];
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unsigned num_parameters;
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unsigned variables;
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struct state_tracker_uniform_info variable[GFX_MAX_VARIABLES];
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char script_path[PATH_MAX_LENGTH];
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char *script; /* Dynamically allocated. Must be free'd. Only used by XML. */
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char script_class[512];
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/* If < 0, no feedback pass is used. Otherwise,
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* the FBO after pass #N is passed a texture to next frame. */
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int feedback_pass;
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};
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/**
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* video_shader_read_conf_cgp:
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* @conf : Preset file to read from.
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* @shader : Shader passes handle.
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*
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* Loads preset file and all associated state (passes,
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* textures, imports, etc).
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*
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* Returns: true (1) if successful, otherwise false (0).
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**/
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bool video_shader_read_conf_cgp(config_file_t *conf,
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struct video_shader *shader);
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/**
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* video_shader_write_conf_cgp:
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* @conf : Preset file to read from.
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* @shader : Shader passes handle.
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*
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* Saves preset and all associated state (passes,
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* textures, imports, etc) to disk.
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**/
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void video_shader_write_conf_cgp(config_file_t *conf,
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struct video_shader *shader);
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/**
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* video_shader_resolve_relative:
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* @shader : Shader pass handle.
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* @ref_path : Relative shader path.
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*
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* Resolves relative shader path (@ref_path) into absolute
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* shader paths.
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**/
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void video_shader_resolve_relative(struct video_shader *shader,
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const char *ref_path);
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/**
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* video_shader_resolve_parameters:
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* @conf : Preset file to read from.
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* @shader : Shader passes handle.
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*
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* Reads the current value for all parameters from config file.
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*
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* Returns: true (1) if successful, otherwise false (0).
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**/
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bool video_shader_resolve_current_parameters(config_file_t *conf,
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struct video_shader *shader);
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/**
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* video_shader_resolve_parameters:
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* @conf : Preset file to read from.
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* @shader : Shader passes handle.
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*
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* Resolves all shader parameters belonging to shaders.
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*
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* Returns: true (1) if successful, otherwise false (0).
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**/
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bool video_shader_resolve_parameters(config_file_t *conf,
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struct video_shader *shader);
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/**
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* video_shader_parse_type:
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* @path : Shader path.
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* @fallback : Fallback shader type in case no
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* type could be found.
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*
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* Parses type of shader.
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*
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* Returns: value of shader type on success, otherwise will return
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* user-supplied @fallback value.
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**/
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enum rarch_shader_type video_shader_parse_type(const char *path,
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enum rarch_shader_type fallback);
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RETRO_END_DECLS
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#endif
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