mirror of
https://github.com/libretro/RetroArch.git
synced 2024-10-07 14:23:29 +00:00
1440 lines
38 KiB
C
1440 lines
38 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
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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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#include <string.h>
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#include <file/file_path.h>
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#include "../../general.h"
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#include "shader_glsl.h"
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#include <compat/strl.h>
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#include <compat/posix_string.h>
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#include "../video_state_tracker.h"
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#include "../../dynamic.h"
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#include "../../file_ops.h"
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#ifdef HAVE_CONFIG_H
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#include "../../config.h"
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#endif
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#include <stdlib.h>
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#ifdef HAVE_OPENGL
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#include "../drivers/gl_common.h"
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#endif
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#ifdef HAVE_OPENGLES2
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#define BORDER_FUNC GL_CLAMP_TO_EDGE
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#else
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#define BORDER_FUNC GL_CLAMP_TO_BORDER
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#endif
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#define PREV_TEXTURES (GFX_MAX_TEXTURES - 1)
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/* Cache the VBO. */
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struct cache_vbo
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{
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GLuint vbo_primary;
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GLfloat *buffer_primary;
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size_t size_primary;
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GLuint vbo_secondary;
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GLfloat *buffer_secondary;
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size_t size_secondary;
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};
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struct glsl_attrib
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{
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GLint loc;
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GLsizei size;
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GLsizei offset;
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};
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static gfx_ctx_proc_t (*glsl_get_proc_address)(const char*);
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struct shader_uniforms_frame
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{
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int texture;
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int input_size;
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int texture_size;
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int tex_coord;
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};
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struct shader_uniforms
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{
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int mvp;
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int tex_coord;
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int vertex_coord;
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int color;
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int lut_tex_coord;
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int input_size;
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int output_size;
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int texture_size;
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int frame_count;
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unsigned frame_count_mod;
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int frame_direction;
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int lut_texture[GFX_MAX_TEXTURES];
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struct shader_uniforms_frame orig;
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struct shader_uniforms_frame feedback;
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struct shader_uniforms_frame pass[GFX_MAX_SHADERS];
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struct shader_uniforms_frame prev[PREV_TEXTURES];
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};
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static const char *glsl_prefixes[] = {
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"",
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"ruby",
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};
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/* Need to duplicate these to work around broken stuff on Android.
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* Must enforce alpha = 1.0 or 32-bit games can potentially go black. */
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static const char *stock_vertex_modern =
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"attribute vec2 TexCoord;\n"
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"attribute vec2 VertexCoord;\n"
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"attribute vec4 Color;\n"
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"uniform mat4 MVPMatrix;\n"
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"varying vec2 tex_coord;\n"
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"void main() {\n"
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" gl_Position = MVPMatrix * vec4(VertexCoord, 0.0, 1.0);\n"
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" tex_coord = TexCoord;\n"
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"}";
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static const char *stock_fragment_modern =
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"#ifdef GL_ES\n"
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"precision mediump float;\n"
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"#endif\n"
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"uniform sampler2D Texture;\n"
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"varying vec2 tex_coord;\n"
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"void main() {\n"
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" gl_FragColor = vec4(texture2D(Texture, tex_coord).rgb, 1.0);\n"
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"}";
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static const char *stock_vertex_core =
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"in vec2 TexCoord;\n"
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"in vec2 VertexCoord;\n"
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"in vec4 Color;\n"
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"uniform mat4 MVPMatrix;\n"
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"out vec2 tex_coord;\n"
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"void main() {\n"
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" gl_Position = MVPMatrix * vec4(VertexCoord, 0.0, 1.0);\n"
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" tex_coord = TexCoord;\n"
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"}";
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static const char *stock_fragment_core =
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"uniform sampler2D Texture;\n"
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"in vec2 tex_coord;\n"
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"out vec4 FragColor;\n"
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"void main() {\n"
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" FragColor = vec4(texture(Texture, tex_coord).rgb, 1.0);\n"
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"}";
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static const char *stock_vertex_legacy =
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"varying vec4 color;\n"
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"void main() {\n"
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" gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;\n"
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" gl_TexCoord[0] = gl_MultiTexCoord0;\n"
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" color = gl_Color;\n"
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"}";
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static const char *stock_fragment_legacy =
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"uniform sampler2D Texture;\n"
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"varying vec4 color;\n"
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"void main() {\n"
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" gl_FragColor = color * texture2D(Texture, gl_TexCoord[0].xy);\n"
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"}";
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static const char *stock_vertex_modern_blend =
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"attribute vec2 TexCoord;\n"
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"attribute vec2 VertexCoord;\n"
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"attribute vec4 Color;\n"
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"uniform mat4 MVPMatrix;\n"
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"varying vec2 tex_coord;\n"
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"varying vec4 color;\n"
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"void main() {\n"
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" gl_Position = MVPMatrix * vec4(VertexCoord, 0.0, 1.0);\n"
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" tex_coord = TexCoord;\n"
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" color = Color;\n"
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"}";
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static const char *stock_fragment_modern_blend =
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"#ifdef GL_ES\n"
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"precision mediump float;\n"
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"#endif\n"
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"uniform sampler2D Texture;\n"
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"varying vec2 tex_coord;\n"
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"varying vec4 color;\n"
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"void main() {\n"
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" gl_FragColor = color * texture2D(Texture, tex_coord);\n"
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"}";
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static const char *stock_vertex_core_blend =
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"in vec2 TexCoord;\n"
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"in vec2 VertexCoord;\n"
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"in vec4 Color;\n"
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"uniform mat4 MVPMatrix;\n"
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"out vec2 tex_coord;\n"
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"out vec4 color;\n"
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"void main() {\n"
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" gl_Position = MVPMatrix * vec4(VertexCoord, 0.0, 1.0);\n"
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" tex_coord = TexCoord;\n"
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" color = Color;\n"
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"}";
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static const char *stock_fragment_core_blend =
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"uniform sampler2D Texture;\n"
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"in vec2 tex_coord;\n"
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"in vec4 color;\n"
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"out vec4 FragColor;\n"
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"void main() {\n"
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" FragColor = color * texture(Texture, tex_coord);\n"
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"}";
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typedef struct glsl_shader_data
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{
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struct video_shader *shader;
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struct shader_uniforms gl_uniforms[GFX_MAX_SHADERS];
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struct cache_vbo glsl_vbo[GFX_MAX_SHADERS];
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char glsl_alias_define[1024];
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unsigned glsl_active_index;
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unsigned gl_attrib_index;
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GLuint gl_program[GFX_MAX_SHADERS];
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GLuint gl_teximage[GFX_MAX_TEXTURES];
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GLint gl_attribs[PREV_TEXTURES + 2 + 4 + GFX_MAX_SHADERS];
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state_tracker_t *gl_state_tracker;
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} glsl_shader_data_t;
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static bool glsl_core;
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static unsigned glsl_major;
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static unsigned glsl_minor;
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static GLint get_uniform(glsl_shader_data_t *glsl,
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GLuint prog, const char *base)
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{
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unsigned i;
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GLint loc;
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char buf[64] = {0};
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snprintf(buf, sizeof(buf), "%s%s", glsl->shader->prefix, base);
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loc = glGetUniformLocation(prog, buf);
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if (loc >= 0)
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return loc;
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for (i = 0; i < ARRAY_SIZE(glsl_prefixes); i++)
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{
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snprintf(buf, sizeof(buf), "%s%s", glsl_prefixes[i], base);
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loc = glGetUniformLocation(prog, buf);
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if (loc >= 0)
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return loc;
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}
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return -1;
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}
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static GLint get_attrib(glsl_shader_data_t *glsl,
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GLuint prog, const char *base)
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{
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unsigned i;
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GLint loc;
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char buf[64] = {0};
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snprintf(buf, sizeof(buf), "%s%s", glsl->shader->prefix, base);
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loc = glGetUniformLocation(prog, buf);
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if (loc >= 0)
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return loc;
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for (i = 0; i < ARRAY_SIZE(glsl_prefixes); i++)
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{
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snprintf(buf, sizeof(buf), "%s%s", glsl_prefixes[i], base);
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loc = glGetAttribLocation(prog, buf);
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if (loc >= 0)
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return loc;
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}
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return -1;
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}
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static void print_shader_log(GLuint obj)
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{
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char *info_log = NULL;
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GLint max_len, info_len = 0;
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glGetShaderiv(obj, GL_INFO_LOG_LENGTH, &max_len);
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if (max_len == 0)
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return;
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info_log = (char*)malloc(max_len);
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if (!info_log)
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return;
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glGetShaderInfoLog(obj, max_len, &info_len, info_log);
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if (info_len > 0)
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RARCH_LOG("Shader log: %s\n", info_log);
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free(info_log);
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}
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static void print_linker_log(GLuint obj)
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{
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char *info_log = NULL;
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GLint max_len, info_len = 0;
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glGetProgramiv(obj, GL_INFO_LOG_LENGTH, &max_len);
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if (max_len == 0)
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return;
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info_log = (char*)malloc(max_len);
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if (!info_log)
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return;
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glGetProgramInfoLog(obj, max_len, &info_len, info_log);
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if (info_len > 0)
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RARCH_LOG("Linker log: %s\n", info_log);
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free(info_log);
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}
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static bool compile_shader(glsl_shader_data_t *glsl,
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GLuint shader,
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const char *define, const char *program)
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{
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GLint status;
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const char *source[4];
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char version[32] = {0};
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if (glsl_core && !strstr(program, "#version"))
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{
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unsigned version_no = 0;
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unsigned gl_ver = glsl_major * 100 + glsl_minor * 10;
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switch (gl_ver)
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{
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case 300:
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version_no = 130;
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break;
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case 310:
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version_no = 140;
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break;
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case 320:
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version_no = 150;
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break;
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default:
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version_no = gl_ver;
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break;
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}
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snprintf(version, sizeof(version), "#version %u\n", version_no);
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RARCH_LOG("[GL]: Using GLSL version %u.\n", version_no);
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}
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source[0]= version;
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source[1] = define;
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source[2] = glsl->glsl_alias_define;
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source[3] = program;
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glShaderSource(shader, ARRAY_SIZE(source), source, NULL);
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glCompileShader(shader);
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glGetShaderiv(shader, GL_COMPILE_STATUS, &status);
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print_shader_log(shader);
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return status == GL_TRUE;
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}
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static bool link_program(GLuint prog)
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{
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GLint status;
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glLinkProgram(prog);
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glGetProgramiv(prog, GL_LINK_STATUS, &status);
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print_linker_log(prog);
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if (status != GL_TRUE)
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return false;
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glUseProgram(prog);
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return true;
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}
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static GLuint compile_program(glsl_shader_data_t *glsl,
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const char *vertex,
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const char *fragment, unsigned i)
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{
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GLuint vert = 0, frag = 0, prog = glCreateProgram();
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if (!prog)
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return 0;
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if (vertex)
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{
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RARCH_LOG("Found GLSL vertex shader.\n");
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vert = glCreateShader(GL_VERTEX_SHADER);
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if (!compile_shader(
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glsl,
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vert, "#define VERTEX\n#define PARAMETER_UNIFORM\n", vertex))
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{
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RARCH_ERR("Failed to compile vertex shader #%u\n", i);
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return 0;
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}
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glAttachShader(prog, vert);
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}
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if (fragment)
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{
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RARCH_LOG("Found GLSL fragment shader.\n");
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frag = glCreateShader(GL_FRAGMENT_SHADER);
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if (!compile_shader(glsl, frag,
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"#define FRAGMENT\n#define PARAMETER_UNIFORM\n", fragment))
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{
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RARCH_ERR("Failed to compile fragment shader #%u\n", i);
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return 0;
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}
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glAttachShader(prog, frag);
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}
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if (vertex || fragment)
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{
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RARCH_LOG("Linking GLSL program.\n");
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if (!link_program(prog))
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{
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RARCH_ERR("Failed to link program #%u.\n", i);
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return 0;
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}
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/* Clean up dead memory. We're not going to relink the program.
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* Detaching first seems to kill some mobile drivers
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* (according to the intertubes anyways). */
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if (vert)
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glDeleteShader(vert);
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if (frag)
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glDeleteShader(frag);
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glUseProgram(prog);
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glUniform1i(get_uniform(glsl, prog, "Texture"), 0);
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glUseProgram(0);
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}
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return prog;
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}
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static bool load_source_path(struct video_shader_pass *pass,
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const char *path)
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{
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ssize_t len;
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bool ret = read_file(path, (void**)&pass->source.string.vertex, &len);
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if (!ret || len <= 0)
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return false;
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pass->source.string.fragment = strdup(pass->source.string.vertex);
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return pass->source.string.fragment && pass->source.string.vertex;
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}
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static bool compile_programs(glsl_shader_data_t *glsl, GLuint *gl_prog)
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{
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unsigned i;
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for (i = 0; i < glsl->shader->passes; i++)
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{
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const char *vertex = NULL;
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const char *fragment = NULL;
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struct video_shader_pass *pass = (struct video_shader_pass*)
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&glsl->shader->pass[i];
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/* If we load from GLSLP (CGP),
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* load the file here, and pretend
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* we were really using XML all along.
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*/
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if (*pass->source.path && !load_source_path(pass, pass->source.path))
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{
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RARCH_ERR("Failed to load GLSL shader: %s.\n", pass->source.path);
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return false;
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}
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*pass->source.path = '\0';
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vertex = pass->source.string.vertex;
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fragment = pass->source.string.fragment;
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gl_prog[i] = compile_program(glsl, vertex, fragment, i);
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if (!gl_prog[i])
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{
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RARCH_ERR("Failed to create GL program #%u.\n", i);
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return false;
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}
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}
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return true;
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}
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static void gl_glsl_reset_attrib(glsl_shader_data_t *glsl)
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{
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unsigned i;
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/* Add sanity check that we did not overflow. */
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rarch_assert(glsl->gl_attrib_index <= ARRAY_SIZE(glsl->gl_attribs));
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for (i = 0; i < glsl->gl_attrib_index; i++)
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glDisableVertexAttribArray(glsl->gl_attribs[i]);
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glsl->gl_attrib_index = 0;
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}
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static void gl_glsl_set_vbo(GLfloat **buffer, size_t *buffer_elems,
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const GLfloat *data, size_t elems)
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{
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if (elems != *buffer_elems ||
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memcmp(data, *buffer, elems * sizeof(GLfloat)))
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{
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if (elems > *buffer_elems)
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{
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GLfloat *new_buffer = (GLfloat*)
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realloc(*buffer, elems * sizeof(GLfloat));
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rarch_assert(new_buffer);
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*buffer = new_buffer;
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}
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memcpy(*buffer, data, elems * sizeof(GLfloat));
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glBufferData(GL_ARRAY_BUFFER, elems * sizeof(GLfloat),
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data, GL_STATIC_DRAW);
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*buffer_elems = elems;
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}
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}
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static void gl_glsl_set_attribs(glsl_shader_data_t *glsl,
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GLuint vbo,
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GLfloat **buffer, size_t *buffer_elems,
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const GLfloat *data, size_t elems,
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const struct glsl_attrib *attrs, size_t num_attrs)
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{
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size_t i;
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glBindBuffer(GL_ARRAY_BUFFER, vbo);
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gl_glsl_set_vbo(buffer, buffer_elems, data, elems);
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for (i = 0; i < num_attrs; i++)
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{
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GLint loc = attrs[i].loc;
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if (glsl->gl_attrib_index < ARRAY_SIZE(glsl->gl_attribs))
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{
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glEnableVertexAttribArray(loc);
|
|
glVertexAttribPointer(loc, attrs[i].size, GL_FLOAT, GL_FALSE, 0,
|
|
(const GLvoid*)(uintptr_t)attrs[i].offset);
|
|
glsl->gl_attribs[glsl->gl_attrib_index++] = loc;
|
|
}
|
|
else
|
|
RARCH_WARN("Attrib array buffer was overflown!\n");
|
|
}
|
|
|
|
glBindBuffer(GL_ARRAY_BUFFER, 0);
|
|
}
|
|
|
|
static void clear_uniforms_frame(struct shader_uniforms_frame *frame)
|
|
{
|
|
frame->texture = -1;
|
|
frame->texture_size = -1;
|
|
frame->input_size = -1;
|
|
frame->tex_coord = -1;
|
|
}
|
|
|
|
static void find_uniforms_frame(glsl_shader_data_t *glsl,
|
|
GLuint prog,
|
|
struct shader_uniforms_frame *frame, const char *base)
|
|
{
|
|
char texture[64] = {0};
|
|
char texture_size[64] = {0};
|
|
char input_size[64] = {0};
|
|
char tex_coord[64] = {0};
|
|
|
|
snprintf(texture, sizeof(texture), "%s%s", base, "Texture");
|
|
snprintf(texture_size, sizeof(texture_size), "%s%s", base, "TextureSize");
|
|
snprintf(input_size, sizeof(input_size), "%s%s", base, "InputSize");
|
|
snprintf(tex_coord, sizeof(tex_coord), "%s%s", base, "TexCoord");
|
|
|
|
if (frame->texture < 0)
|
|
frame->texture = get_uniform(glsl, prog, texture);
|
|
if (frame->texture_size < 0)
|
|
frame->texture_size = get_uniform(glsl, prog, texture_size);
|
|
if (frame->input_size < 0)
|
|
frame->input_size = get_uniform(glsl, prog, input_size);
|
|
if (frame->tex_coord < 0)
|
|
frame->tex_coord = get_attrib(glsl, prog, tex_coord);
|
|
}
|
|
|
|
static void find_uniforms(glsl_shader_data_t *glsl,
|
|
unsigned pass, GLuint prog,
|
|
struct shader_uniforms *uni)
|
|
{
|
|
unsigned i;
|
|
char frame_base[64] = {0};
|
|
|
|
glUseProgram(prog);
|
|
|
|
uni->mvp = get_uniform(glsl, prog, "MVPMatrix");
|
|
uni->tex_coord = get_attrib(glsl, prog, "TexCoord");
|
|
uni->vertex_coord = get_attrib(glsl, prog, "VertexCoord");
|
|
uni->color = get_attrib(glsl, prog, "Color");
|
|
uni->lut_tex_coord = get_attrib(glsl, prog, "LUTTexCoord");
|
|
|
|
uni->input_size = get_uniform(glsl, prog, "InputSize");
|
|
uni->output_size = get_uniform(glsl, prog, "OutputSize");
|
|
uni->texture_size = get_uniform(glsl, prog, "TextureSize");
|
|
|
|
uni->frame_count = get_uniform(glsl, prog, "FrameCount");
|
|
uni->frame_direction = get_uniform(glsl, prog, "FrameDirection");
|
|
|
|
for (i = 0; i < glsl->shader->luts; i++)
|
|
uni->lut_texture[i] = glGetUniformLocation(prog, glsl->shader->lut[i].id);
|
|
|
|
clear_uniforms_frame(&uni->orig);
|
|
find_uniforms_frame(glsl, prog, &uni->orig, "Orig");
|
|
clear_uniforms_frame(&uni->feedback);
|
|
find_uniforms_frame(glsl, prog, &uni->feedback, "Feedback");
|
|
|
|
if (pass > 1)
|
|
{
|
|
snprintf(frame_base, sizeof(frame_base), "PassPrev%u", pass);
|
|
find_uniforms_frame(glsl, prog, &uni->orig, frame_base);
|
|
}
|
|
|
|
for (i = 0; i + 1 < pass; i++)
|
|
{
|
|
snprintf(frame_base, sizeof(frame_base), "Pass%u", i + 1);
|
|
clear_uniforms_frame(&uni->pass[i]);
|
|
find_uniforms_frame(glsl, prog, &uni->pass[i], frame_base);
|
|
snprintf(frame_base, sizeof(frame_base), "PassPrev%u", pass - (i + 1));
|
|
find_uniforms_frame(glsl, prog, &uni->pass[i], frame_base);
|
|
|
|
if (*glsl->shader->pass[i].alias)
|
|
find_uniforms_frame(glsl, prog, &uni->pass[i], glsl->shader->pass[i].alias);
|
|
}
|
|
|
|
clear_uniforms_frame(&uni->prev[0]);
|
|
find_uniforms_frame(glsl, prog, &uni->prev[0], "Prev");
|
|
for (i = 1; i < PREV_TEXTURES; i++)
|
|
{
|
|
snprintf(frame_base, sizeof(frame_base), "Prev%u", i);
|
|
clear_uniforms_frame(&uni->prev[i]);
|
|
find_uniforms_frame(glsl, prog, &uni->prev[i], frame_base);
|
|
}
|
|
|
|
glUseProgram(0);
|
|
}
|
|
|
|
static void gl_glsl_deinit_shader(glsl_shader_data_t *glsl)
|
|
{
|
|
unsigned i;
|
|
|
|
if (!glsl || !glsl->shader)
|
|
return;
|
|
|
|
for (i = 0; i < glsl->shader->passes; i++)
|
|
{
|
|
free(glsl->shader->pass[i].source.string.vertex);
|
|
free(glsl->shader->pass[i].source.string.fragment);
|
|
}
|
|
|
|
free(glsl->shader->script);
|
|
free(glsl->shader);
|
|
glsl->shader = NULL;
|
|
}
|
|
|
|
static void gl_glsl_destroy_resources(glsl_shader_data_t *glsl)
|
|
{
|
|
unsigned i;
|
|
|
|
if (!glsl)
|
|
return;
|
|
|
|
glUseProgram(0);
|
|
for (i = 0; i < GFX_MAX_SHADERS; i++)
|
|
{
|
|
if (glsl->gl_program[i] == 0 || (i && glsl->gl_program[i] == glsl->gl_program[0]))
|
|
continue;
|
|
|
|
glDeleteProgram(glsl->gl_program[i]);
|
|
}
|
|
|
|
if (glsl->shader && glsl->shader->luts)
|
|
glDeleteTextures(glsl->shader->luts, glsl->gl_teximage);
|
|
|
|
memset(glsl->gl_program, 0, sizeof(glsl->gl_program));
|
|
memset(glsl->gl_uniforms, 0, sizeof(glsl->gl_uniforms));
|
|
glsl->glsl_active_index = 0;
|
|
|
|
gl_glsl_deinit_shader(glsl);
|
|
|
|
if (glsl->gl_state_tracker)
|
|
state_tracker_free(glsl->gl_state_tracker);
|
|
glsl->gl_state_tracker = NULL;
|
|
|
|
gl_glsl_reset_attrib(glsl);
|
|
|
|
for (i = 0; i < GFX_MAX_SHADERS; i++)
|
|
{
|
|
if (glsl->glsl_vbo[i].vbo_primary)
|
|
glDeleteBuffers(1, &glsl->glsl_vbo[i].vbo_primary);
|
|
if (glsl->glsl_vbo[i].vbo_secondary)
|
|
glDeleteBuffers(1, &glsl->glsl_vbo[i].vbo_secondary);
|
|
|
|
free(glsl->glsl_vbo[i].buffer_primary);
|
|
free(glsl->glsl_vbo[i].buffer_secondary);
|
|
}
|
|
memset(&glsl->glsl_vbo, 0, sizeof(glsl->glsl_vbo));
|
|
}
|
|
|
|
static void gl_glsl_deinit(void)
|
|
{
|
|
driver_t *driver = driver_get_ptr();
|
|
glsl_shader_data_t *glsl = (glsl_shader_data_t*)driver->video_shader_data;
|
|
|
|
if (!glsl)
|
|
return;
|
|
|
|
gl_glsl_destroy_resources(glsl);
|
|
|
|
if (driver->video_shader_data)
|
|
free(driver->video_shader_data);
|
|
driver->video_shader_data = NULL;
|
|
}
|
|
|
|
static bool gl_glsl_init(void *data, const char *path)
|
|
{
|
|
unsigned i;
|
|
config_file_t *conf = NULL;
|
|
glsl_shader_data_t *glsl = NULL;
|
|
const char *stock_vertex = NULL;
|
|
const char *stock_fragment = NULL;
|
|
driver_t *driver = driver_get_ptr();
|
|
|
|
(void)data;
|
|
|
|
glsl = (glsl_shader_data_t*)calloc(1, sizeof(glsl_shader_data_t));
|
|
|
|
if (!glsl)
|
|
return false;
|
|
|
|
#ifndef HAVE_OPENGLES2
|
|
RARCH_LOG("Checking GLSL shader support ...\n");
|
|
bool shader_support = glCreateProgram && glUseProgram && glCreateShader
|
|
&& glDeleteShader && glShaderSource && glCompileShader && glAttachShader
|
|
&& glDetachShader && glLinkProgram && glGetUniformLocation
|
|
&& glUniform1i && glUniform1f && glUniform2fv && glUniform4fv
|
|
&& glUniformMatrix4fv
|
|
&& glGetShaderiv && glGetShaderInfoLog && glGetProgramiv
|
|
&& glGetProgramInfoLog
|
|
&& glDeleteProgram && glGetAttachedShaders
|
|
&& glGetAttribLocation && glEnableVertexAttribArray
|
|
&& glDisableVertexAttribArray
|
|
&& glVertexAttribPointer
|
|
&& glGenBuffers && glBufferData && glDeleteBuffers && glBindBuffer;
|
|
|
|
if (!shader_support)
|
|
{
|
|
RARCH_ERR("GLSL shaders aren't supported by your OpenGL driver.\n");
|
|
free(glsl);
|
|
return false;
|
|
}
|
|
#endif
|
|
|
|
glsl->shader = (struct video_shader*)calloc(1, sizeof(*glsl->shader));
|
|
if (!glsl->shader)
|
|
{
|
|
free(glsl);
|
|
return false;
|
|
}
|
|
|
|
if (path)
|
|
{
|
|
bool ret;
|
|
const char *path_ext = path_get_extension(path);
|
|
|
|
if (!strcmp(path_ext, "glsl"))
|
|
{
|
|
strlcpy(glsl->shader->pass[0].source.path, path,
|
|
sizeof(glsl->shader->pass[0].source.path));
|
|
glsl->shader->passes = 1;
|
|
glsl->shader->modern = true;
|
|
ret = true;
|
|
}
|
|
else if (!strcmp(path_ext, "glslp"))
|
|
{
|
|
conf = config_file_new(path);
|
|
if (conf)
|
|
{
|
|
ret = video_shader_read_conf_cgp(conf, glsl->shader);
|
|
glsl->shader->modern = true;
|
|
}
|
|
else
|
|
ret = false;
|
|
}
|
|
else
|
|
ret = false;
|
|
|
|
if (!ret)
|
|
{
|
|
RARCH_ERR("[GL]: Failed to parse GLSL shader.\n");
|
|
free(glsl->shader);
|
|
free(glsl);
|
|
return false;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
RARCH_WARN("[GL]: Stock GLSL shaders will be used.\n");
|
|
glsl->shader->passes = 1;
|
|
glsl->shader->pass[0].source.string.vertex =
|
|
strdup(glsl_core ? stock_vertex_core : stock_vertex_modern);
|
|
glsl->shader->pass[0].source.string.fragment =
|
|
strdup(glsl_core ? stock_fragment_core : stock_fragment_modern);
|
|
glsl->shader->modern = true;
|
|
}
|
|
|
|
video_shader_resolve_relative(glsl->shader, path);
|
|
video_shader_resolve_parameters(conf, glsl->shader);
|
|
|
|
if (conf)
|
|
{
|
|
config_file_free(conf);
|
|
conf = NULL;
|
|
}
|
|
|
|
stock_vertex = (glsl->shader->modern) ?
|
|
stock_vertex_modern : stock_vertex_legacy;
|
|
stock_fragment = (glsl->shader->modern) ?
|
|
stock_fragment_modern : stock_fragment_legacy;
|
|
|
|
if (glsl_core)
|
|
{
|
|
stock_vertex = stock_vertex_core;
|
|
stock_fragment = stock_fragment_core;
|
|
}
|
|
|
|
#ifdef HAVE_OPENGLES2
|
|
if (!glsl->shader->modern)
|
|
{
|
|
RARCH_ERR("[GL]: GLES context is used, but shader is not modern. Cannot use it.\n");
|
|
goto error;
|
|
}
|
|
#else
|
|
if (glsl_core && !glsl->shader->modern)
|
|
{
|
|
RARCH_ERR("[GL]: GL core context is used, but shader is not core compatible. Cannot use it.\n");
|
|
goto error;
|
|
}
|
|
#endif
|
|
|
|
/* Find all aliases we use in our GLSLP and add #defines for them so
|
|
* that a shader can choose a fallback if we are not using a preset. */
|
|
*glsl->glsl_alias_define = '\0';
|
|
for (i = 0; i < glsl->shader->passes; i++)
|
|
{
|
|
if (*glsl->shader->pass[i].alias)
|
|
{
|
|
char define[128] = {0};
|
|
|
|
snprintf(define, sizeof(define), "#define %s_ALIAS\n",
|
|
glsl->shader->pass[i].alias);
|
|
strlcat(glsl->glsl_alias_define, define, sizeof(glsl->glsl_alias_define));
|
|
}
|
|
}
|
|
|
|
if (!(glsl->gl_program[0] = compile_program(glsl, stock_vertex, stock_fragment, 0)))
|
|
{
|
|
RARCH_ERR("GLSL stock programs failed to compile.\n");
|
|
goto error;
|
|
}
|
|
|
|
if (!compile_programs(glsl, &glsl->gl_program[1]))
|
|
goto error;
|
|
|
|
if (!gl_load_luts(glsl->shader, glsl->gl_teximage))
|
|
{
|
|
RARCH_ERR("[GL]: Failed to load LUTs.\n");
|
|
goto error;
|
|
}
|
|
|
|
for (i = 0; i <= glsl->shader->passes; i++)
|
|
find_uniforms(glsl, i, glsl->gl_program[i], &glsl->gl_uniforms[i]);
|
|
|
|
#ifdef GLSL_DEBUG
|
|
if (!gl_check_error())
|
|
RARCH_WARN("Detected GL error in GLSL.\n");
|
|
#endif
|
|
|
|
if (glsl->shader->variables)
|
|
{
|
|
struct state_tracker_info info = {0};
|
|
|
|
info.wram = (uint8_t*)core.retro_get_memory_data(RETRO_MEMORY_SYSTEM_RAM);
|
|
info.info = glsl->shader->variable;
|
|
info.info_elem = glsl->shader->variables;
|
|
|
|
#ifdef HAVE_PYTHON
|
|
info.script = glsl->shader->script;
|
|
info.script_class = *glsl->shader->script_class ?
|
|
glsl->shader->script_class : NULL;
|
|
#endif
|
|
|
|
glsl->gl_state_tracker = state_tracker_init(&info);
|
|
if (!glsl->gl_state_tracker)
|
|
RARCH_WARN("Failed to init state tracker.\n");
|
|
}
|
|
|
|
glsl->gl_program[glsl->shader->passes + 1] = glsl->gl_program[0];
|
|
glsl->gl_uniforms[glsl->shader->passes + 1] = glsl->gl_uniforms[0];
|
|
|
|
if (glsl->shader->modern)
|
|
{
|
|
glsl->gl_program[GL_SHADER_STOCK_BLEND] = compile_program(
|
|
glsl,
|
|
glsl_core ?
|
|
stock_vertex_core_blend : stock_vertex_modern_blend,
|
|
glsl_core ?
|
|
stock_fragment_core_blend : stock_fragment_modern_blend,
|
|
GL_SHADER_STOCK_BLEND);
|
|
find_uniforms(glsl, 0, glsl->gl_program[GL_SHADER_STOCK_BLEND],
|
|
&glsl->gl_uniforms[GL_SHADER_STOCK_BLEND]);
|
|
}
|
|
else
|
|
{
|
|
glsl->gl_program [GL_SHADER_STOCK_BLEND] = glsl->gl_program[0];
|
|
glsl->gl_uniforms[GL_SHADER_STOCK_BLEND] = glsl->gl_uniforms[0];
|
|
}
|
|
|
|
gl_glsl_reset_attrib(glsl);
|
|
|
|
for (i = 0; i < GFX_MAX_SHADERS; i++)
|
|
{
|
|
glGenBuffers(1, &glsl->glsl_vbo[i].vbo_primary);
|
|
glGenBuffers(1, &glsl->glsl_vbo[i].vbo_secondary);
|
|
}
|
|
|
|
driver->video_shader_data = glsl;
|
|
|
|
return true;
|
|
|
|
error:
|
|
gl_glsl_destroy_resources(glsl);
|
|
|
|
if (glsl)
|
|
free(glsl);
|
|
|
|
return false;
|
|
}
|
|
|
|
static void gl_glsl_set_params(void *data, unsigned width, unsigned height,
|
|
unsigned tex_width, unsigned tex_height,
|
|
unsigned out_width, unsigned out_height,
|
|
unsigned frame_count,
|
|
const void *_info,
|
|
const void *_prev_info,
|
|
const void *_feedback_info,
|
|
const void *_fbo_info, unsigned fbo_info_cnt)
|
|
{
|
|
GLfloat buffer[512];
|
|
struct glsl_attrib attribs[32];
|
|
float input_size[2], output_size[2], texture_size[2];
|
|
unsigned i, texunit = 1;
|
|
const struct shader_uniforms *uni = NULL;
|
|
size_t size = 0, attribs_size = 0;
|
|
const struct gfx_tex_info *info = (const struct gfx_tex_info*)_info;
|
|
const struct gfx_tex_info *prev_info = (const struct gfx_tex_info*)_prev_info;
|
|
const struct gfx_tex_info *feedback_info = (const struct gfx_tex_info*)_feedback_info;
|
|
const struct gfx_tex_info *fbo_info = (const struct gfx_tex_info*)_fbo_info;
|
|
struct glsl_attrib *attr = (struct glsl_attrib*)attribs;
|
|
driver_t *driver = driver_get_ptr();
|
|
glsl_shader_data_t *glsl = (glsl_shader_data_t*)driver->video_shader_data;
|
|
|
|
if (!glsl)
|
|
return;
|
|
|
|
uni = (const struct shader_uniforms*)&glsl->gl_uniforms[glsl->glsl_active_index];
|
|
|
|
(void)data;
|
|
|
|
if (glsl->gl_program[glsl->glsl_active_index] == 0)
|
|
return;
|
|
|
|
input_size [0] = (float)width;
|
|
input_size [1] = (float)height;
|
|
output_size[0] = (float)out_width;
|
|
output_size[1] = (float)out_height;
|
|
texture_size[0] = (float)tex_width;
|
|
texture_size[1] = (float)tex_height;
|
|
|
|
if (uni->input_size >= 0)
|
|
glUniform2fv(uni->input_size, 1, input_size);
|
|
|
|
if (uni->output_size >= 0)
|
|
glUniform2fv(uni->output_size, 1, output_size);
|
|
|
|
if (uni->texture_size >= 0)
|
|
glUniform2fv(uni->texture_size, 1, texture_size);
|
|
|
|
if (uni->frame_count >= 0 && glsl->glsl_active_index)
|
|
{
|
|
unsigned modulo = glsl->shader->pass[glsl->glsl_active_index - 1].frame_count_mod;
|
|
|
|
if (modulo)
|
|
frame_count %= modulo;
|
|
glUniform1i(uni->frame_count, frame_count);
|
|
}
|
|
|
|
if (uni->frame_direction >= 0)
|
|
glUniform1i(uni->frame_direction, state_manager_frame_is_reversed() ? -1 : 1);
|
|
|
|
|
|
for (i = 0; i < glsl->shader->luts; i++)
|
|
{
|
|
if (uni->lut_texture[i] < 0)
|
|
continue;
|
|
|
|
/* Have to rebind as HW render could override this. */
|
|
glActiveTexture(GL_TEXTURE0 + texunit);
|
|
glBindTexture(GL_TEXTURE_2D, glsl->gl_teximage[i]);
|
|
glUniform1i(uni->lut_texture[i], texunit);
|
|
texunit++;
|
|
}
|
|
|
|
if (glsl->glsl_active_index)
|
|
{
|
|
/* Set original texture. */
|
|
if (uni->orig.texture >= 0)
|
|
{
|
|
/* Bind original texture. */
|
|
glActiveTexture(GL_TEXTURE0 + texunit);
|
|
glUniform1i(uni->orig.texture, texunit);
|
|
glBindTexture(GL_TEXTURE_2D, info->tex);
|
|
texunit++;
|
|
}
|
|
|
|
if (uni->orig.texture_size >= 0)
|
|
glUniform2fv(uni->orig.texture_size, 1, info->tex_size);
|
|
|
|
if (uni->orig.input_size >= 0)
|
|
glUniform2fv(uni->orig.input_size, 1, info->input_size);
|
|
|
|
/* Pass texture coordinates. */
|
|
if (uni->orig.tex_coord >= 0)
|
|
{
|
|
attr->loc = uni->orig.tex_coord;
|
|
attr->size = 2;
|
|
attr->offset = size * sizeof(GLfloat);
|
|
attribs_size++;
|
|
attr++;
|
|
|
|
memcpy(buffer + size, info->coord, 8 * sizeof(GLfloat));
|
|
size += 8;
|
|
}
|
|
|
|
/* Set feedback texture. */
|
|
if (uni->feedback.texture >= 0)
|
|
{
|
|
/* Bind original texture. */
|
|
glActiveTexture(GL_TEXTURE0 + texunit);
|
|
glUniform1i(uni->feedback.texture, texunit);
|
|
glBindTexture(GL_TEXTURE_2D, feedback_info->tex);
|
|
texunit++;
|
|
}
|
|
|
|
if (uni->feedback.texture_size >= 0)
|
|
glUniform2fv(uni->feedback.texture_size, 1, feedback_info->tex_size);
|
|
|
|
if (uni->feedback.input_size >= 0)
|
|
glUniform2fv(uni->feedback.input_size, 1, feedback_info->input_size);
|
|
|
|
/* Pass texture coordinates. */
|
|
if (uni->feedback.tex_coord >= 0)
|
|
{
|
|
attr->loc = uni->feedback.tex_coord;
|
|
attr->size = 2;
|
|
attr->offset = size * sizeof(GLfloat);
|
|
attribs_size++;
|
|
attr++;
|
|
|
|
memcpy(buffer + size, feedback_info->coord, 8 * sizeof(GLfloat));
|
|
size += 8;
|
|
}
|
|
|
|
/* Bind FBO textures. */
|
|
for (i = 0; i < fbo_info_cnt; i++)
|
|
{
|
|
if (uni->pass[i].texture)
|
|
{
|
|
glActiveTexture(GL_TEXTURE0 + texunit);
|
|
glBindTexture(GL_TEXTURE_2D, fbo_info[i].tex);
|
|
glUniform1i(uni->pass[i].texture, texunit);
|
|
texunit++;
|
|
}
|
|
|
|
if (uni->pass[i].texture_size >= 0)
|
|
glUniform2fv(uni->pass[i].texture_size, 1, fbo_info[i].tex_size);
|
|
|
|
if (uni->pass[i].input_size >= 0)
|
|
glUniform2fv(uni->pass[i].input_size, 1, fbo_info[i].input_size);
|
|
|
|
if (uni->pass[i].tex_coord >= 0)
|
|
{
|
|
attr->loc = uni->pass[i].tex_coord;
|
|
attr->size = 2;
|
|
attr->offset = size * sizeof(GLfloat);
|
|
attribs_size++;
|
|
attr++;
|
|
|
|
memcpy(buffer + size, fbo_info[i].coord, 8 * sizeof(GLfloat));
|
|
size += 8;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Set previous textures. Only bind if they're actually used. */
|
|
for (i = 0; i < PREV_TEXTURES; i++)
|
|
{
|
|
if (uni->prev[i].texture >= 0)
|
|
{
|
|
glActiveTexture(GL_TEXTURE0 + texunit);
|
|
glBindTexture(GL_TEXTURE_2D, prev_info[i].tex);
|
|
glUniform1i(uni->prev[i].texture, texunit);
|
|
texunit++;
|
|
}
|
|
|
|
if (uni->prev[i].texture_size >= 0)
|
|
glUniform2fv(uni->prev[i].texture_size, 1, prev_info[i].tex_size);
|
|
|
|
if (uni->prev[i].input_size >= 0)
|
|
glUniform2fv(uni->prev[i].input_size, 1, prev_info[i].input_size);
|
|
|
|
/* Pass texture coordinates. */
|
|
if (uni->prev[i].tex_coord >= 0)
|
|
{
|
|
attr->loc = uni->prev[i].tex_coord;
|
|
attr->size = 2;
|
|
attr->offset = size * sizeof(GLfloat);
|
|
attribs_size++;
|
|
attr++;
|
|
|
|
memcpy(buffer + size, prev_info[i].coord, 8 * sizeof(GLfloat));
|
|
size += 8;
|
|
}
|
|
}
|
|
|
|
if (size)
|
|
{
|
|
gl_glsl_set_attribs(glsl, glsl->glsl_vbo[glsl->glsl_active_index].vbo_secondary,
|
|
&glsl->glsl_vbo[glsl->glsl_active_index].buffer_secondary,
|
|
&glsl->glsl_vbo[glsl->glsl_active_index].size_secondary,
|
|
buffer, size, attribs, attribs_size);
|
|
}
|
|
|
|
glActiveTexture(GL_TEXTURE0);
|
|
|
|
/* #pragma parameters. */
|
|
for (i = 0; i < glsl->shader->num_parameters; i++)
|
|
{
|
|
int location = glGetUniformLocation(
|
|
glsl->gl_program[glsl->glsl_active_index],
|
|
glsl->shader->parameters[i].id);
|
|
glUniform1f(location, glsl->shader->parameters[i].current);
|
|
}
|
|
|
|
/* Set state parameters. */
|
|
if (glsl->gl_state_tracker)
|
|
{
|
|
static struct state_tracker_uniform state_info[GFX_MAX_VARIABLES];
|
|
static unsigned cnt = 0;
|
|
|
|
if (glsl->glsl_active_index == 1)
|
|
cnt = state_tracker_get_uniform(glsl->gl_state_tracker, state_info,
|
|
GFX_MAX_VARIABLES, frame_count);
|
|
|
|
for (i = 0; i < cnt; i++)
|
|
{
|
|
int location = glGetUniformLocation(
|
|
glsl->gl_program[glsl->glsl_active_index],
|
|
state_info[i].id);
|
|
glUniform1f(location, state_info[i].value);
|
|
}
|
|
}
|
|
}
|
|
|
|
static bool gl_glsl_set_mvp(void *data, const math_matrix_4x4 *mat)
|
|
{
|
|
int loc;
|
|
driver_t *driver = driver_get_ptr();
|
|
glsl_shader_data_t *glsl = (glsl_shader_data_t*)driver->video_shader_data;
|
|
|
|
(void)data;
|
|
|
|
if (!glsl || !glsl->shader->modern)
|
|
{
|
|
gl_ff_matrix(mat);
|
|
return false;
|
|
}
|
|
|
|
loc = glsl->gl_uniforms[glsl->glsl_active_index].mvp;
|
|
if (loc >= 0)
|
|
glUniformMatrix4fv(loc, 1, GL_FALSE, mat->data);
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool gl_glsl_set_coords(const void *data)
|
|
{
|
|
/* Avoid hitting malloc on every single regular quad draw. */
|
|
GLfloat short_buffer[4 * (2 + 2 + 4 + 2)];
|
|
GLfloat *buffer;
|
|
struct glsl_attrib attribs[4];
|
|
size_t attribs_size = 0, size = 0;
|
|
struct glsl_attrib *attr = NULL;
|
|
const struct shader_uniforms *uni = NULL;
|
|
const struct gfx_coords *coords = (const struct gfx_coords*)data;
|
|
driver_t *driver = driver_get_ptr();
|
|
glsl_shader_data_t *glsl = (glsl_shader_data_t*)driver->video_shader_data;
|
|
|
|
if (!glsl || !glsl->shader->modern || !coords)
|
|
{
|
|
gl_ff_vertex(coords);
|
|
return false;
|
|
}
|
|
|
|
buffer = short_buffer;
|
|
if (coords->vertices > 4)
|
|
buffer = (GLfloat*)calloc(coords->vertices *
|
|
(2 + 2 + 4 + 2), sizeof(*buffer));
|
|
|
|
if (!buffer)
|
|
{
|
|
gl_ff_vertex(coords);
|
|
return false;
|
|
}
|
|
|
|
attr = attribs;
|
|
uni = &glsl->gl_uniforms[glsl->glsl_active_index];
|
|
|
|
if (uni->tex_coord >= 0)
|
|
{
|
|
attr->loc = uni->tex_coord;
|
|
attr->size = 2;
|
|
attr->offset = size * sizeof(GLfloat);
|
|
attribs_size++;
|
|
attr++;
|
|
|
|
memcpy(buffer + size, coords->tex_coord,
|
|
2 * coords->vertices * sizeof(GLfloat));
|
|
size += 2 * coords->vertices;
|
|
}
|
|
|
|
if (uni->vertex_coord >= 0)
|
|
{
|
|
attr->loc = uni->vertex_coord;
|
|
attr->size = 2;
|
|
attr->offset = size * sizeof(GLfloat);
|
|
attribs_size++;
|
|
attr++;
|
|
|
|
memcpy(buffer + size, coords->vertex,
|
|
2 * coords->vertices * sizeof(GLfloat));
|
|
size += 2 * coords->vertices;
|
|
}
|
|
|
|
if (uni->color >= 0)
|
|
{
|
|
attr->loc = uni->color;
|
|
attr->size = 4;
|
|
attr->offset = size * sizeof(GLfloat);
|
|
attribs_size++;
|
|
attr++;
|
|
|
|
memcpy(buffer + size, coords->color,
|
|
4 * coords->vertices * sizeof(GLfloat));
|
|
size += 4 * coords->vertices;
|
|
}
|
|
|
|
if (uni->lut_tex_coord >= 0)
|
|
{
|
|
attr->loc = uni->lut_tex_coord;
|
|
attr->size = 2;
|
|
attr->offset = size * sizeof(GLfloat);
|
|
attribs_size++;
|
|
attr++;
|
|
|
|
memcpy(buffer + size, coords->lut_tex_coord,
|
|
2 * coords->vertices * sizeof(GLfloat));
|
|
size += 2 * coords->vertices;
|
|
}
|
|
|
|
if (size)
|
|
{
|
|
gl_glsl_set_attribs(glsl,
|
|
glsl->glsl_vbo[glsl->glsl_active_index].vbo_primary,
|
|
&glsl->glsl_vbo[glsl->glsl_active_index].buffer_primary,
|
|
&glsl->glsl_vbo[glsl->glsl_active_index].size_primary,
|
|
buffer, size,
|
|
attribs, attribs_size);
|
|
}
|
|
|
|
if (buffer != short_buffer)
|
|
free(buffer);
|
|
|
|
return true;
|
|
}
|
|
|
|
static void gl_glsl_use(void *data, unsigned idx)
|
|
{
|
|
driver_t *driver = driver_get_ptr();
|
|
glsl_shader_data_t *glsl = (glsl_shader_data_t*)driver->video_shader_data;
|
|
|
|
(void)data;
|
|
|
|
if (!glsl)
|
|
return;
|
|
|
|
gl_glsl_reset_attrib(glsl);
|
|
|
|
glsl->glsl_active_index = idx;
|
|
glUseProgram(glsl->gl_program[idx]);
|
|
}
|
|
|
|
static unsigned gl_glsl_num(void)
|
|
{
|
|
driver_t *driver = driver_get_ptr();
|
|
glsl_shader_data_t *glsl = (glsl_shader_data_t*)driver->video_shader_data;
|
|
if (glsl && glsl->shader)
|
|
return glsl->shader->passes;
|
|
return 0;
|
|
}
|
|
|
|
static bool gl_glsl_filter_type(unsigned idx, bool *smooth)
|
|
{
|
|
driver_t *driver = driver_get_ptr();
|
|
glsl_shader_data_t *glsl = (glsl_shader_data_t*)driver->video_shader_data;
|
|
if (glsl && idx
|
|
&& (glsl->shader->pass[idx - 1].filter != RARCH_FILTER_UNSPEC)
|
|
)
|
|
{
|
|
*smooth = (glsl->shader->pass[idx - 1].filter == RARCH_FILTER_LINEAR);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static enum gfx_wrap_type gl_glsl_wrap_type(unsigned idx)
|
|
{
|
|
driver_t *driver = driver_get_ptr();
|
|
glsl_shader_data_t *glsl = (glsl_shader_data_t*)driver->video_shader_data;
|
|
if (glsl && idx)
|
|
return glsl->shader->pass[idx - 1].wrap;
|
|
return RARCH_WRAP_BORDER;
|
|
}
|
|
|
|
static void gl_glsl_shader_scale(unsigned idx, struct gfx_fbo_scale *scale)
|
|
{
|
|
driver_t *driver = driver_get_ptr();
|
|
glsl_shader_data_t *glsl = (glsl_shader_data_t*)driver->video_shader_data;
|
|
if (glsl && idx)
|
|
*scale = glsl->shader->pass[idx - 1].fbo;
|
|
else
|
|
scale->valid = false;
|
|
}
|
|
|
|
static unsigned gl_glsl_get_prev_textures(void)
|
|
{
|
|
unsigned i, j;
|
|
unsigned max_prev = 0;
|
|
driver_t *driver = driver_get_ptr();
|
|
glsl_shader_data_t *glsl = (glsl_shader_data_t*)driver->video_shader_data;
|
|
|
|
if (!glsl)
|
|
return 0;
|
|
|
|
for (i = 1; i <= glsl->shader->passes; i++)
|
|
for (j = 0; j < PREV_TEXTURES; j++)
|
|
if (glsl->gl_uniforms[i].prev[j].texture >= 0)
|
|
max_prev = max(j + 1, max_prev);
|
|
|
|
return max_prev;
|
|
}
|
|
|
|
static bool gl_glsl_mipmap_input(unsigned idx)
|
|
{
|
|
driver_t *driver = driver_get_ptr();
|
|
glsl_shader_data_t *glsl = (glsl_shader_data_t*)driver->video_shader_data;
|
|
if (glsl && idx)
|
|
return glsl->shader->pass[idx - 1].mipmap;
|
|
return false;
|
|
}
|
|
|
|
static bool gl_glsl_get_feedback_pass(unsigned *index)
|
|
{
|
|
driver_t *driver = driver_get_ptr();
|
|
glsl_shader_data_t *glsl = (glsl_shader_data_t*)driver->video_shader_data;
|
|
if (!glsl || glsl->shader->feedback_pass < 0)
|
|
return false;
|
|
|
|
*index = glsl->shader->feedback_pass;
|
|
return true;
|
|
}
|
|
|
|
static struct video_shader *gl_glsl_get_current_shader(void)
|
|
{
|
|
driver_t *driver = driver_get_ptr();
|
|
glsl_shader_data_t *glsl = (glsl_shader_data_t*)driver->video_shader_data;
|
|
if (!glsl)
|
|
return NULL;
|
|
return glsl->shader;
|
|
}
|
|
|
|
void gl_glsl_set_get_proc_address(gfx_ctx_proc_t (*proc)(const char*))
|
|
{
|
|
glsl_get_proc_address = proc;
|
|
}
|
|
|
|
void gl_glsl_set_context_type(bool core_profile,
|
|
unsigned major, unsigned minor)
|
|
{
|
|
glsl_core = core_profile;
|
|
glsl_major = major;
|
|
glsl_minor = minor;
|
|
}
|
|
|
|
const shader_backend_t gl_glsl_backend = {
|
|
gl_glsl_init,
|
|
gl_glsl_deinit,
|
|
gl_glsl_set_params,
|
|
gl_glsl_use,
|
|
gl_glsl_num,
|
|
gl_glsl_filter_type,
|
|
gl_glsl_wrap_type,
|
|
gl_glsl_shader_scale,
|
|
gl_glsl_set_coords,
|
|
gl_glsl_set_mvp,
|
|
gl_glsl_get_prev_textures,
|
|
gl_glsl_get_feedback_pass,
|
|
gl_glsl_mipmap_input,
|
|
gl_glsl_get_current_shader,
|
|
|
|
RARCH_SHADER_GLSL,
|
|
"glsl"
|
|
};
|
|
|