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RetroArch/gfx/drivers_shader/shader_glsl.c
HyperspaceMadness 0c526b6498 Shaders Load Refactor and Fix Referenced Texture Loading 
Partial update to work with shaders directly

More Edits

More changes

more shader fixes

More Fixes Compiling, reference load still wrong

Added Feedback & things are working

Logging Fixes

Log Fix

More Fixes

Added Feedback Logging

Fixes for file pathing in Linux

Fix GLCore and Crash in QT Saving

Code Cleanup

Removed Unused Function filepath.c

Code Cleanup
2020-12-26 21:09:27 -05:00

1624 lines
47 KiB
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Raw Blame History

/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2017 - Daniel De Matteis
*
* 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/>.
*/
#include <stdlib.h>
#include <string.h>
#include <compat/strl.h>
#include <compat/posix_string.h>
#include <file/file_path.h>
#include <retro_assert.h>
#include <streams/file_stream.h>
#include <string/stdstring.h>
#ifdef HAVE_CONFIG_H
#include "../../config.h"
#endif
#if defined(HAVE_OPENGL) || defined(HAVE_OPENGLES)
#include <gfx/gl_capabilities.h>
#include "../common/gl_common.h"
#endif
#include "shader_glsl.h"
#ifdef HAVE_REWIND
#include "../../state_manager.h"
#endif
#include "../../core.h"
#include "../../verbosity.h"
#define PREV_TEXTURES (GFX_MAX_TEXTURES - 1)
/* Cache the VBO. */
struct cache_vbo
{
GLuint vbo_primary;
GLuint vbo_secondary;
size_t size_primary;
size_t size_secondary;
GLfloat *buffer_primary;
GLfloat *buffer_secondary;
};
struct shader_program_glsl_data
{
GLuint vprg;
GLuint fprg;
GLuint id;
};
struct glsl_attrib
{
GLint loc;
GLsizei size;
GLsizei offset;
};
struct shader_uniforms_frame
{
int texture;
int input_size;
int texture_size;
int tex_coord;
};
struct shader_uniforms
{
int mvp;
int tex_coord;
int vertex_coord;
int color;
int lut_tex_coord;
int input_size;
int output_size;
int texture_size;
int frame_count;
int frame_direction;
int lut_texture[GFX_MAX_TEXTURES];
unsigned frame_count_mod;
struct shader_uniforms_frame orig;
struct shader_uniforms_frame feedback;
struct shader_uniforms_frame pass[GFX_MAX_SHADERS];
struct shader_uniforms_frame prev[PREV_TEXTURES];
};
static const char *glsl_prefixes[] = {
"",
"ruby",
};
#include "../drivers/gl_shaders/modern_opaque.glsl.vert.h"
#include "../drivers/gl_shaders/modern_opaque.glsl.frag.h"
#include "../drivers/gl_shaders/core_opaque.glsl.vert.h"
#include "../drivers/gl_shaders/core_opaque.glsl.frag.h"
#include "../drivers/gl_shaders/legacy_opaque.glsl.vert.h"
#include "../drivers/gl_shaders/legacy_opaque.glsl.frag.h"
#include "../drivers/gl_shaders/modern_alpha_blend.glsl.vert.h"
#include "../drivers/gl_shaders/modern_alpha_blend.glsl.frag.h"
#include "../drivers/gl_shaders/core_alpha_blend.glsl.vert.h"
#include "../drivers/gl_shaders/core_alpha_blend.glsl.frag.h"
#ifdef HAVE_SHADERPIPELINE
#include "../drivers/gl_shaders/core_pipeline_snow.glsl.frag.h"
#include "../drivers/gl_shaders/core_pipeline_snow_simple.glsl.frag.h"
#include "../drivers/gl_shaders/core_pipeline_xmb_ribbon.glsl.frag.h"
#include "../drivers/gl_shaders/core_pipeline_xmb_ribbon_simple.glsl.frag.h"
#include "../drivers/gl_shaders/core_pipeline_bokeh.glsl.frag.h"
#include "../drivers/gl_shaders/core_pipeline_snowflake.glsl.frag.h"
#include "../drivers/gl_shaders/legacy_pipeline_xmb_ribbon_simple.glsl.vert.h"
#include "../drivers/gl_shaders/modern_pipeline_xmb_ribbon_simple.glsl.vert.h"
#include "../drivers/gl_shaders/pipeline_xmb_ribbon_simple.glsl.frag.h"
#include "../drivers/gl_shaders/pipeline_snow.glsl.frag.h"
#include "../drivers/gl_shaders/pipeline_snow.glsl.vert.h"
#include "../drivers/gl_shaders/pipeline_snow_core.glsl.vert.h"
#include "../drivers/gl_shaders/pipeline_snow_simple.glsl.frag.h"
#include "../drivers/gl_shaders/legacy_pipeline_snow.glsl.vert.h"
#include "../drivers/gl_shaders/legacy_pipeline_xmb_ribbon.glsl.vert.h"
#include "../drivers/gl_shaders/modern_pipeline_xmb_ribbon.glsl.vert.h"
#include "../drivers/gl_shaders/pipeline_xmb_ribbon.glsl.frag.h"
#include "../drivers/gl_shaders/pipeline_bokeh.glsl.frag.h"
#include "../drivers/gl_shaders/pipeline_snowflake.glsl.frag.h"
#endif
typedef struct glsl_shader_data
{
char alias_define[1024];
GLint attribs_elems[32 * PREV_TEXTURES + 2 + 4 + GFX_MAX_SHADERS];
unsigned attribs_index;
unsigned active_idx;
unsigned current_idx;
GLuint lut_textures[GFX_MAX_TEXTURES];
float current_mat_data[GFX_MAX_SHADERS];
float* current_mat_data_pointer[GFX_MAX_SHADERS];
struct shader_uniforms uniforms[GFX_MAX_SHADERS];
struct cache_vbo vbo[GFX_MAX_SHADERS];
struct shader_program_glsl_data prg[GFX_MAX_SHADERS];
struct video_shader *shader;
} glsl_shader_data_t;
/* TODO/FIXME - static globals */
static bool glsl_core;
static unsigned glsl_major;
static unsigned glsl_minor;
static GLint gl_glsl_get_uniform(glsl_shader_data_t *glsl,
GLuint prog, const char *base)
{
unsigned i;
GLint loc;
char buf[80];
buf[0] = '\0';
strlcpy(buf, glsl->shader->prefix, sizeof(buf));
strlcat(buf, base, sizeof(buf));
loc = glGetUniformLocation(prog, buf);
if (loc >= 0)
return loc;
for (i = 0; i < ARRAY_SIZE(glsl_prefixes); i++)
{
buf[0] = '\0';
strlcpy(buf, glsl_prefixes[i], sizeof(buf));
strlcat(buf, base, sizeof(buf));
loc = glGetUniformLocation(prog, buf);
if (loc >= 0)
return loc;
}
return -1;
}
static GLint gl_glsl_get_attrib(glsl_shader_data_t *glsl,
GLuint prog, const char *base)
{
unsigned i;
GLint loc;
char buf[80];
buf[0] = '\0';
strlcpy(buf, glsl->shader->prefix, sizeof(buf));
strlcat(buf, base, sizeof(buf));
loc = glGetUniformLocation(prog, buf);
if (loc >= 0)
return loc;
for (i = 0; i < ARRAY_SIZE(glsl_prefixes); i++)
{
strlcpy(buf, glsl_prefixes[i], sizeof(buf));
strlcat(buf, base, sizeof(buf));
loc = glGetAttribLocation(prog, buf);
if (loc >= 0)
return loc;
}
return -1;
}
static void gl_glsl_print_shader_log(GLuint obj)
{
char *info_log = NULL;
GLint max_len, info_len = 0;
glGetShaderiv(obj, GL_INFO_LOG_LENGTH, &max_len);
if (max_len == 0)
return;
info_log = (char*)malloc(max_len);
if (!info_log)
return;
glGetShaderInfoLog(obj, max_len, &info_len, info_log);
if (info_len > 0)
RARCH_LOG("Shader log: %s\n", info_log);
free(info_log);
}
static void gl_glsl_print_linker_log(GLuint obj)
{
char *info_log = NULL;
GLint max_len, info_len = 0;
glGetProgramiv(obj, GL_INFO_LOG_LENGTH, &max_len);
if (max_len == 0)
return;
info_log = (char*)malloc(max_len);
if (!info_log)
return;
glGetProgramInfoLog(obj, max_len, &info_len, info_log);
if (info_len > 0)
RARCH_LOG("Linker log: %s\n", info_log);
free(info_log);
}
static bool gl_glsl_compile_shader(glsl_shader_data_t *glsl,
GLuint shader,
const char *define, const char *program)
{
GLint status;
const char *source[4];
char version[32];
const char *existing_version = strstr(program, "#version");
version[0] = '\0';
if (existing_version)
{
const char* version_extra = "";
unsigned version_no = (unsigned)strtoul(existing_version + 8, (char**)&program, 10);
#ifdef HAVE_OPENGLES
if (version_no < 130)
version_no = 100;
else
{
version_extra = " es";
version_no = 300;
}
#endif
snprintf(version, sizeof(version), "#version %u%s\n", version_no, version_extra);
RARCH_LOG("[GLSL]: Using GLSL version %u%s.\n", version_no, version_extra);
}
else if (glsl_core)
{
unsigned version_no = 0;
unsigned gl_ver = glsl_major * 100 + glsl_minor * 10;
switch (gl_ver)
{
case 300:
version_no = 130;
break;
case 310:
version_no = 140;
break;
case 320:
version_no = 150;
break;
default:
version_no = gl_ver;
break;
}
snprintf(version, sizeof(version), "#version %u\n", version_no);
RARCH_LOG("[GLSL]: Using GLSL version %u.\n", version_no);
}
source[0] = version;
source[1] = define;
source[2] = glsl->alias_define;
source[3] = program;
glShaderSource(shader, ARRAY_SIZE(source), source, NULL);
glCompileShader(shader);
glGetShaderiv(shader, GL_COMPILE_STATUS, &status);
gl_glsl_print_shader_log(shader);
return status == GL_TRUE;
}
static bool gl_glsl_link_program(GLuint prog)
{
GLint status;
glLinkProgram(prog);
glGetProgramiv(prog, GL_LINK_STATUS, &status);
gl_glsl_print_linker_log(prog);
if (status != GL_TRUE)
return false;
glUseProgram(prog);
return true;
}
static bool gl_glsl_compile_program(
void *data,
unsigned idx,
void *program_data,
struct shader_program_info *program_info)
{
glsl_shader_data_t *glsl = (glsl_shader_data_t*)data;
struct shader_program_glsl_data *program = (struct shader_program_glsl_data*)program_data;
GLuint prog = glCreateProgram();
if (!program)
program = &glsl->prg[idx];
if (!prog)
goto error;
if (program_info->vertex)
{
RARCH_LOG("[GLSL]: Found GLSL vertex shader.\n");
program->vprg = glCreateShader(GL_VERTEX_SHADER);
if (!gl_glsl_compile_shader(
glsl,
program->vprg,
"#define VERTEX\n#define PARAMETER_UNIFORM\n", program_info->vertex))
{
RARCH_ERR("Failed to compile vertex shader #%u\n", idx);
goto error;
}
glAttachShader(prog, program->vprg);
}
if (program_info->fragment)
{
RARCH_LOG("[GLSL]: Found GLSL fragment shader.\n");
program->fprg = glCreateShader(GL_FRAGMENT_SHADER);
if (!gl_glsl_compile_shader(glsl, program->fprg,
"#define FRAGMENT\n#define PARAMETER_UNIFORM\n", program_info->fragment))
{
RARCH_ERR("Failed to compile fragment shader #%u\n", idx);
goto error;
}
glAttachShader(prog, program->fprg);
}
if (program_info->vertex || program_info->fragment)
{
RARCH_LOG("[GLSL]: Linking GLSL program.\n");
if (!gl_glsl_link_program(prog))
goto error;
/* Clean up dead memory. We're not going to relink the program.
* Detaching first seems to kill some mobile drivers
* (according to the intertubes anyways). */
if (program->vprg)
glDeleteShader(program->vprg);
if (program->fprg)
glDeleteShader(program->fprg);
program->vprg = 0;
program->fprg = 0;
glUseProgram(prog);
glUniform1i(gl_glsl_get_uniform(glsl, prog, "Texture"), 0);
glUseProgram(0);
}
program->id = prog;
return true;
error:
RARCH_ERR("Failed to link program #%u.\n", idx);
program->id = 0;
return false;
}
static void gl_glsl_strip_parameter_pragmas(char *source, const char *str)
{
/* #pragma parameter lines tend to have " characters in them,
* which is not legal GLSL. */
char *s = strstr(source, str);
while (s)
{
/* #pragmas have to be on a single line,
* so we can just replace the entire line with spaces. */
while (*s != '\0' && *s != '\n')
*s++ = ' ';
s = strstr(s, str);
}
}
static bool gl_glsl_load_source_path(struct video_shader_pass *pass,
const char *path)
{
int64_t len = 0;
int64_t nitems = pass ? filestream_read_file(path,
(void**)&pass->source.string.vertex, &len) : 0;
if (nitems <= 0 || len <= 0)
return false;
gl_glsl_strip_parameter_pragmas(pass->source.string.vertex, "#pragma parameter");
pass->source.string.fragment = strdup(pass->source.string.vertex);
return pass->source.string.fragment && pass->source.string.vertex;
}
static bool gl_glsl_compile_programs(
glsl_shader_data_t *glsl, struct shader_program_glsl_data *program)
{
unsigned i;
for (i = 0; i < glsl->shader->passes; i++)
{
struct shader_program_info shader_prog_info;
const char *vertex = NULL;
const char *fragment = NULL;
struct video_shader_pass *pass = (struct video_shader_pass*)
&glsl->shader->pass[i];
if (!pass)
continue;
/* If we load from GLSLP (preset),
* load the file here.
*/
if ( !string_is_empty(pass->source.path)
&& !gl_glsl_load_source_path(pass, pass->source.path))
{
RARCH_ERR("Failed to load GLSL shader: %s.\n",
pass->source.path);
return false;
}
vertex = pass->source.string.vertex;
fragment = pass->source.string.fragment;
shader_prog_info.vertex = vertex;
shader_prog_info.fragment = fragment;
shader_prog_info.is_file = false;
if (!gl_glsl_compile_program(glsl, i,
&program[i],
&shader_prog_info))
{
RARCH_ERR("Failed to create GL program #%u.\n", i);
return false;
}
}
return true;
}
static void gl_glsl_reset_attrib(glsl_shader_data_t *glsl)
{
unsigned i;
/* Add sanity check that we did not overflow. */
retro_assert(glsl->attribs_index <= ARRAY_SIZE(glsl->attribs_elems));
for (i = 0; i < glsl->attribs_index; i++)
glDisableVertexAttribArray(glsl->attribs_elems[i]);
glsl->attribs_index = 0;
}
static void gl_glsl_set_vbo(GLfloat **buffer, size_t *buffer_elems,
const GLfloat *data, size_t elems)
{
if (elems > *buffer_elems)
{
GLfloat *new_buffer = (GLfloat*)
realloc(*buffer, elems * sizeof(GLfloat));
retro_assert(new_buffer);
*buffer = new_buffer;
}
memcpy(*buffer, data, elems * sizeof(GLfloat));
glBufferData(GL_ARRAY_BUFFER, elems * sizeof(GLfloat),
data, GL_STATIC_DRAW);
*buffer_elems = elems;
}
static INLINE void gl_glsl_set_attribs(glsl_shader_data_t *glsl,
GLuint vbo,
GLfloat **buffer, size_t *buffer_elems,
const GLfloat *data, size_t elems,
const struct glsl_attrib *attrs, size_t num_attrs)
{
size_t i;
glBindBuffer(GL_ARRAY_BUFFER, vbo);
if (elems != *buffer_elems ||
memcmp(data, *buffer, elems * sizeof(GLfloat)))
gl_glsl_set_vbo(buffer, buffer_elems, data, elems);
for (i = 0; i < num_attrs; i++)
{
if (glsl->attribs_index < ARRAY_SIZE(glsl->attribs_elems))
{
GLint loc = attrs[i].loc;
glEnableVertexAttribArray(loc);
glVertexAttribPointer(loc, attrs[i].size, GL_FLOAT, GL_FALSE, 0,
(const GLvoid*)(uintptr_t)attrs[i].offset);
glsl->attribs_elems[glsl->attribs_index++] = loc;
}
else
RARCH_WARN("Attrib array buffer was overflown!\n");
}
glBindBuffer(GL_ARRAY_BUFFER, 0);
}
static void gl_glsl_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 gl_glsl_find_uniforms_frame(glsl_shader_data_t *glsl,
GLuint prog,
struct shader_uniforms_frame *frame, const char *base)
{
char texture[64];
char texture_size[64];
char input_size[64];
char tex_coord[64];
texture[0] = texture_size[0] = input_size[0] = tex_coord[0] = '\0';
strlcpy(texture, base, sizeof(texture));
strlcat(texture, "Texture", sizeof(texture));
strlcpy(texture_size, base, sizeof(texture_size));
strlcat(texture_size, "TextureSize", sizeof(texture_size));
strlcpy(input_size, base, sizeof(input_size));
strlcat(input_size, "InputSize", sizeof(input_size));
strlcpy(tex_coord, base, sizeof(tex_coord));
strlcat(tex_coord, "TexCoord", sizeof(tex_coord));
if (frame->texture < 0)
frame->texture = gl_glsl_get_uniform(glsl, prog, texture);
if (frame->texture_size < 0)
frame->texture_size = gl_glsl_get_uniform(glsl, prog, texture_size);
if (frame->input_size < 0)
frame->input_size = gl_glsl_get_uniform(glsl, prog, input_size);
if (frame->tex_coord < 0)
frame->tex_coord = gl_glsl_get_attrib(glsl, prog, tex_coord);
}
static void gl_glsl_find_uniforms(glsl_shader_data_t *glsl,
unsigned pass, GLuint prog,
struct shader_uniforms *uni)
{
unsigned i;
char frame_base[64];
frame_base[0] = '\0';
glUseProgram(prog);
uni->mvp = gl_glsl_get_uniform(glsl, prog, "MVPMatrix");
uni->tex_coord = gl_glsl_get_attrib(glsl, prog, "TexCoord");
uni->vertex_coord = gl_glsl_get_attrib(glsl, prog, "VertexCoord");
uni->color = gl_glsl_get_attrib(glsl, prog, "Color");
uni->lut_tex_coord = gl_glsl_get_attrib(glsl, prog, "LUTTexCoord");
uni->input_size = gl_glsl_get_uniform(glsl, prog, "InputSize");
uni->output_size = gl_glsl_get_uniform(glsl, prog, "OutputSize");
uni->texture_size = gl_glsl_get_uniform(glsl, prog, "TextureSize");
uni->frame_count = gl_glsl_get_uniform(glsl, prog, "FrameCount");
uni->frame_direction = gl_glsl_get_uniform(glsl, prog, "FrameDirection");
for (i = 0; i < glsl->shader->luts; i++)
uni->lut_texture[i] = glGetUniformLocation(prog, glsl->shader->lut[i].id);
gl_glsl_clear_uniforms_frame(&uni->orig);
gl_glsl_find_uniforms_frame(glsl, prog, &uni->orig, "Orig");
gl_glsl_clear_uniforms_frame(&uni->feedback);
gl_glsl_find_uniforms_frame(glsl, prog, &uni->feedback, "Feedback");
if (pass > 1)
{
snprintf(frame_base, sizeof(frame_base), "PassPrev%u", pass);
gl_glsl_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);
gl_glsl_clear_uniforms_frame(&uni->pass[i]);
gl_glsl_find_uniforms_frame(glsl, prog, &uni->pass[i], frame_base);
snprintf(frame_base, sizeof(frame_base), "PassPrev%u", pass - (i + 1));
gl_glsl_find_uniforms_frame(glsl, prog, &uni->pass[i], frame_base);
if (*glsl->shader->pass[i].alias)
gl_glsl_find_uniforms_frame(glsl, prog, &uni->pass[i], glsl->shader->pass[i].alias);
}
gl_glsl_clear_uniforms_frame(&uni->prev[0]);
gl_glsl_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);
gl_glsl_clear_uniforms_frame(&uni->prev[i]);
gl_glsl_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);
glsl->shader = NULL;
}
static void gl_glsl_destroy_resources(glsl_shader_data_t *glsl)
{
unsigned i;
if (!glsl)
return;
glsl->current_idx = 0;
glUseProgram(0);
for (i = 0; i < GFX_MAX_SHADERS; i++)
{
if (glsl->prg[i].id == 0 || (i && glsl->prg[i].id == glsl->prg[0].id))
continue;
if (!glIsProgram(glsl->prg[i].id))
continue;
glDeleteProgram(glsl->prg[i].id);
glsl->prg[i].id = 0;
}
if (glsl->shader && glsl->shader->luts)
glDeleteTextures(glsl->shader->luts, glsl->lut_textures);
memset(glsl->prg, 0, sizeof(glsl->prg));
memset(glsl->uniforms, 0, sizeof(glsl->uniforms));
glsl->active_idx = 0;
gl_glsl_deinit_shader(glsl);
gl_glsl_reset_attrib(glsl);
for (i = 0; i < GFX_MAX_SHADERS; i++)
{
if (glsl->vbo[i].vbo_primary)
glDeleteBuffers(1, &glsl->vbo[i].vbo_primary);
if (glsl->vbo[i].vbo_secondary)
glDeleteBuffers(1, &glsl->vbo[i].vbo_secondary);
free(glsl->vbo[i].buffer_primary);
free(glsl->vbo[i].buffer_secondary);
}
memset(&glsl->vbo, 0, sizeof(glsl->vbo));
}
static void gl_glsl_deinit(void *data)
{
glsl_shader_data_t *glsl = (glsl_shader_data_t*)data;
if (!glsl)
return;
gl_glsl_destroy_resources(glsl);
free(glsl);
}
static void gl_glsl_init_menu_shaders(void *data)
{
#ifdef HAVE_SHADERPIPELINE
struct shader_program_info shader_prog_info;
glsl_shader_data_t *glsl = (glsl_shader_data_t*)data;
if (!glsl)
return;
#ifdef HAVE_OPENGLES
if (gl_query_extension("GL_OES_standard_derivatives"))
{
shader_prog_info.vertex = glsl_core ? stock_vertex_xmb_ribbon_modern : stock_vertex_xmb_ribbon_legacy;
shader_prog_info.fragment = glsl_core ? core_stock_fragment_xmb : stock_fragment_xmb;
}
else
{
shader_prog_info.vertex = stock_vertex_xmb_ribbon_simple_legacy;
shader_prog_info.fragment = stock_fragment_xmb_ribbon_simple;
}
#else
shader_prog_info.vertex = glsl_core ? stock_vertex_xmb_ribbon_modern : stock_vertex_xmb_ribbon_legacy;
shader_prog_info.fragment = glsl_core ? core_stock_fragment_xmb : stock_fragment_xmb;
#endif
shader_prog_info.is_file = false;
RARCH_LOG("[GLSL]: Compiling ribbon shader..\n");
gl_glsl_compile_program(
glsl,
VIDEO_SHADER_MENU,
&glsl->prg[VIDEO_SHADER_MENU],
&shader_prog_info);
gl_glsl_find_uniforms(glsl, 0, glsl->prg[VIDEO_SHADER_MENU].id,
&glsl->uniforms[VIDEO_SHADER_MENU]);
shader_prog_info.vertex = glsl_core ? stock_vertex_xmb_simple_modern : stock_vertex_xmb_ribbon_simple_legacy;
shader_prog_info.fragment = glsl_core ? stock_fragment_xmb_ribbon_simple_core : stock_fragment_xmb_ribbon_simple;
RARCH_LOG("[GLSL]: Compiling simple ribbon shader..\n");
gl_glsl_compile_program(
glsl,
VIDEO_SHADER_MENU_2,
&glsl->prg[VIDEO_SHADER_MENU_2],
&shader_prog_info);
gl_glsl_find_uniforms(glsl, 0, glsl->prg[VIDEO_SHADER_MENU_2].id,
&glsl->uniforms[VIDEO_SHADER_MENU_2]);
#if defined(HAVE_OPENGLES)
shader_prog_info.vertex = stock_vertex_xmb_snow;
shader_prog_info.fragment = stock_fragment_xmb_simple_snow;
#else
shader_prog_info.vertex = glsl_core ? stock_vertex_xmb_snow_core : stock_vertex_xmb_snow_legacy;
shader_prog_info.fragment = glsl_core ? stock_fragment_xmb_simple_snow_core : stock_fragment_xmb_simple_snow;
#endif
RARCH_LOG("[GLSL]: Compiling snow shader..\n");
gl_glsl_compile_program(
glsl,
VIDEO_SHADER_MENU_3,
&glsl->prg[VIDEO_SHADER_MENU_3],
&shader_prog_info);
gl_glsl_find_uniforms(glsl, 0, glsl->prg[VIDEO_SHADER_MENU_3].id,
&glsl->uniforms[VIDEO_SHADER_MENU_3]);
#if defined(HAVE_OPENGLES)
shader_prog_info.vertex = stock_vertex_xmb_snow;
shader_prog_info.fragment = stock_fragment_xmb_snow;
#else
shader_prog_info.vertex = glsl_core ? stock_vertex_xmb_snow_core : stock_vertex_xmb_snow_legacy;
shader_prog_info.fragment = glsl_core ? stock_fragment_xmb_snow_core : stock_fragment_xmb_snow;
#endif
RARCH_LOG("[GLSL]: Compiling modern snow shader..\n");
gl_glsl_compile_program(
glsl,
VIDEO_SHADER_MENU_4,
&glsl->prg[VIDEO_SHADER_MENU_4],
&shader_prog_info);
gl_glsl_find_uniforms(glsl, 0, glsl->prg[VIDEO_SHADER_MENU_4].id,
&glsl->uniforms[VIDEO_SHADER_MENU_4]);
#if defined(HAVE_OPENGLES)
shader_prog_info.vertex = stock_vertex_xmb_snow;
shader_prog_info.fragment = stock_fragment_xmb_bokeh;
#else
shader_prog_info.vertex = glsl_core ? stock_vertex_xmb_snow_core : stock_vertex_xmb_snow_legacy;
shader_prog_info.fragment = glsl_core ? stock_fragment_xmb_bokeh_core : stock_fragment_xmb_bokeh;
#endif
RARCH_LOG("[GLSL]: Compiling bokeh shader..\n");
gl_glsl_compile_program(
glsl,
VIDEO_SHADER_MENU_5,
&glsl->prg[VIDEO_SHADER_MENU_5],
&shader_prog_info);
gl_glsl_find_uniforms(glsl, 0, glsl->prg[VIDEO_SHADER_MENU_5].id,
&glsl->uniforms[VIDEO_SHADER_MENU_5]);
#if defined(HAVE_OPENGLES)
shader_prog_info.vertex = stock_vertex_xmb_snow;
shader_prog_info.fragment = stock_fragment_xmb_snowflake;
#else
shader_prog_info.vertex = glsl_core ? stock_vertex_xmb_snow_core : stock_vertex_xmb_snow_legacy;
shader_prog_info.fragment = glsl_core ? stock_fragment_xmb_snowflake_core : stock_fragment_xmb_snowflake;
#endif
RARCH_LOG("[GLSL]: Compiling snowflake shader..\n");
gl_glsl_compile_program(
glsl,
VIDEO_SHADER_MENU_6,
&glsl->prg[VIDEO_SHADER_MENU_6],
&shader_prog_info);
gl_glsl_find_uniforms(glsl, 0, glsl->prg[VIDEO_SHADER_MENU_6].id,
&glsl->uniforms[VIDEO_SHADER_MENU_6]);
#endif
}
static void *gl_glsl_init(void *data, const char *path)
{
unsigned i;
struct shader_program_info shader_prog_info;
bool shader_support = false;
#ifdef GLSL_DEBUG
char *error_string = NULL;
#endif
const char *stock_vertex = NULL;
const char *stock_fragment = NULL;
glsl_shader_data_t *glsl = (glsl_shader_data_t*)
calloc(1, sizeof(glsl_shader_data_t));
if (!glsl)
return NULL;
(void)shader_support;
#ifndef HAVE_OPENGLES
RARCH_LOG("[GLSL]: Checking GLSL shader support ...\n");
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");
goto error;
}
#endif
glsl->shader = (struct video_shader*)calloc(1, sizeof(*glsl->shader));
if (!glsl->shader)
goto error;
{
bool is_preset;
enum rarch_shader_type type =
video_shader_get_type_from_ext(path_get_extension(path), &is_preset);
if (!string_is_empty(path) && type != RARCH_SHADER_GLSL)
{
RARCH_ERR("[GL]: Invalid shader type, falling back to stock.\n");
path = NULL;
}
if (!string_is_empty(path))
{
bool ret = false;
if (is_preset)
{
ret = video_shader_load_preset_into_shader(path, glsl->shader);
glsl->shader->modern = true;
}
else
{
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;
}
if (!ret)
{
RARCH_ERR("[GL]: Failed to parse GLSL shader.\n");
goto error;
}
}
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;
}
}
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_OPENGLES
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->alias_define = '\0';
for (i = 0; i < glsl->shader->passes; i++)
{
if (*glsl->shader->pass[i].alias)
{
char define[128];
define[0] = '\0';
snprintf(define, sizeof(define), "#define %s_ALIAS\n",
glsl->shader->pass[i].alias);
strlcat(glsl->alias_define, define, sizeof(glsl->alias_define));
}
}
shader_prog_info.vertex = stock_vertex;
shader_prog_info.fragment = stock_fragment;
shader_prog_info.is_file = false;
if (!gl_glsl_compile_program(glsl, 0, &glsl->prg[0], &shader_prog_info))
{
RARCH_ERR("GLSL stock programs failed to compile.\n");
goto error;
}
if (!gl_glsl_compile_programs(glsl, &glsl->prg[1]))
goto error;
if (!gl_load_luts(glsl->shader, glsl->lut_textures))
{
RARCH_ERR("[GL]: Failed to load LUTs.\n");
goto error;
}
for (i = 0; i <= glsl->shader->passes; i++)
gl_glsl_find_uniforms(glsl, i, glsl->prg[i].id, &glsl->uniforms[i]);
#ifdef GLSL_DEBUG
if (!gl_check_error(&error_string))
{
RARCH_ERR("%s\n", error_string);
free(error_string);
RARCH_WARN("Detected GL error in GLSL.\n");
}
#endif
glsl->prg[glsl->shader->passes + 1] = glsl->prg[0];
glsl->uniforms[glsl->shader->passes + 1] = glsl->uniforms[0];
if (glsl->shader->modern)
{
shader_prog_info.vertex =
glsl_core ?
stock_vertex_core_blend : stock_vertex_modern_blend;
shader_prog_info.fragment =
glsl_core ?
stock_fragment_core_blend : stock_fragment_modern_blend;
shader_prog_info.is_file = false;
gl_glsl_compile_program(
glsl,
VIDEO_SHADER_STOCK_BLEND,
&glsl->prg[VIDEO_SHADER_STOCK_BLEND],
&shader_prog_info
);
gl_glsl_find_uniforms(glsl, 0, glsl->prg[VIDEO_SHADER_STOCK_BLEND].id,
&glsl->uniforms[VIDEO_SHADER_STOCK_BLEND]);
}
else
{
glsl->prg[VIDEO_SHADER_STOCK_BLEND] = glsl->prg[0];
glsl->uniforms[VIDEO_SHADER_STOCK_BLEND] = glsl->uniforms[0];
}
gl_glsl_reset_attrib(glsl);
for (i = 0; i < GFX_MAX_SHADERS; i++)
{
glGenBuffers(1, &glsl->vbo[i].vbo_primary);
glGenBuffers(1, &glsl->vbo[i].vbo_secondary);
}
return glsl;
error:
gl_glsl_destroy_resources(glsl);
if (glsl)
free(glsl);
return NULL;
}
static void gl_glsl_set_uniform_parameter(
void *data,
struct uniform_info *param,
void *uniform_data)
{
GLint location = 0;
glsl_shader_data_t *glsl = (glsl_shader_data_t*)data;
if (!glsl || !param)
return;
if (param->lookup.enable)
location = glGetUniformLocation(glsl->prg[param->lookup.idx].id, param->lookup.ident);
else
location = param->location;
switch (param->type)
{
case UNIFORM_1F:
glUniform1f(location, param->result.f.v0);
break;
case UNIFORM_2F:
glUniform2f(location, param->result.f.v0,
param->result.f.v1);
break;
case UNIFORM_3F:
glUniform3f(location, param->result.f.v0,
param->result.f.v1, param->result.f.v2);
break;
case UNIFORM_4F:
glUniform4f(location, param->result.f.v0,
param->result.f.v1, param->result.f.v2,
param->result.f.v3);
break;
case UNIFORM_1FV:
glUniform1fv(location, 1, param->result.floatv);
break;
case UNIFORM_2FV:
glUniform2fv(location, 1, param->result.floatv);
break;
case UNIFORM_3FV:
glUniform3fv(location, 1, param->result.floatv);
break;
case UNIFORM_4FV:
glUniform4fv(location, 1, param->result.floatv);
break;
case UNIFORM_1I:
glUniform1i(location, (GLint)param->result.integer.v0);
break;
}
}
static void gl_glsl_set_params(void *dat, void *shader_data)
{
unsigned i;
GLfloat buffer[512];
struct glsl_attrib attribs[32];
float input_size[2], output_size[2], texture_size[2];
video_shader_ctx_params_t *params = (video_shader_ctx_params_t*)dat;
unsigned width = params->width;
unsigned height = params->height;
unsigned tex_width = params->tex_width;
unsigned tex_height = params->tex_height;
unsigned out_width = params->out_width;
unsigned out_height = params->out_height;
unsigned frame_count = params->frame_counter;
const void *_info = params->info;
const void *_prev_info = params->prev_info;
const void *_feedback_info = params->feedback_info;
const void *_fbo_info = params->fbo_info;
unsigned fbo_info_cnt = params->fbo_info_cnt;
unsigned texunit = 1;
const struct shader_uniforms *uni = NULL;
size_t size = 0;
size_t attribs_size = 0;
const struct video_tex_info *info = (const struct video_tex_info*)_info;
const struct video_tex_info *prev_info = (const struct video_tex_info*)_prev_info;
const struct video_tex_info *feedback_info = (const struct video_tex_info*)_feedback_info;
const struct video_tex_info *fbo_info = (const struct video_tex_info*)_fbo_info;
struct glsl_attrib *attr = (struct glsl_attrib*)attribs;
glsl_shader_data_t *glsl = (glsl_shader_data_t*)shader_data;
if (!glsl)
return;
uni = (const struct shader_uniforms*)&glsl->uniforms[glsl->active_idx];
if (glsl->prg[glsl->active_idx].id == 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->active_idx)
{
unsigned modulo = glsl->shader->pass[glsl->active_idx - 1].frame_count_mod;
if (modulo)
frame_count %= modulo;
glUniform1i(uni->frame_count, frame_count);
}
if (uni->frame_direction >= 0)
{
#ifdef HAVE_REWIND
if (state_manager_frame_is_reversed())
glUniform1i(uni->frame_direction, -1);
else
#endif
glUniform1i(uni->frame_direction, 1);
}
/* Set lookup textures. */
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->lut_textures[i]);
glUniform1i(uni->lut_texture[i], texunit);
texunit++;
}
if (glsl->active_idx)
{
/* 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 = (GLsizei)(size * sizeof(GLfloat));
attribs_size++;
attr++;
buffer[size ] = info->coord[0];
buffer[size + 1] = info->coord[1];
buffer[size + 2] = info->coord[2];
buffer[size + 3] = info->coord[3];
buffer[size + 4] = info->coord[4];
buffer[size + 5] = info->coord[5];
buffer[size + 6] = info->coord[6];
buffer[size + 7] = info->coord[7];
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 = (GLsizei)(size * sizeof(GLfloat));
attribs_size++;
attr++;
buffer[size ] = feedback_info->coord[0];
buffer[size + 1] = feedback_info->coord[1];
buffer[size + 2] = feedback_info->coord[2];
buffer[size + 3] = feedback_info->coord[3];
buffer[size + 4] = feedback_info->coord[4];
buffer[size + 5] = feedback_info->coord[5];
buffer[size + 6] = feedback_info->coord[6];
buffer[size + 7] = feedback_info->coord[7];
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 = (GLsizei)(size * sizeof(GLfloat));
attribs_size++;
attr++;
buffer[size ] = fbo_info[i].coord[0];
buffer[size + 1] = fbo_info[i].coord[1];
buffer[size + 2] = fbo_info[i].coord[2];
buffer[size + 3] = fbo_info[i].coord[3];
buffer[size + 4] = fbo_info[i].coord[4];
buffer[size + 5] = fbo_info[i].coord[5];
buffer[size + 6] = fbo_info[i].coord[6];
buffer[size + 7] = fbo_info[i].coord[7];
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 = (GLsizei)(size * sizeof(GLfloat));
attribs_size++;
attr++;
buffer[size ] = prev_info[i].coord[0];
buffer[size + 1] = prev_info[i].coord[1];
buffer[size + 2] = prev_info[i].coord[2];
buffer[size + 3] = prev_info[i].coord[3];
buffer[size + 4] = prev_info[i].coord[4];
buffer[size + 5] = prev_info[i].coord[5];
buffer[size + 6] = prev_info[i].coord[6];
buffer[size + 7] = prev_info[i].coord[7];
size += 8;
}
}
if (size)
gl_glsl_set_attribs(glsl, glsl->vbo[glsl->active_idx].vbo_secondary,
&glsl->vbo[glsl->active_idx].buffer_secondary,
&glsl->vbo[glsl->active_idx].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->prg[glsl->active_idx].id,
glsl->shader->parameters[i].id);
glUniform1f(location, glsl->shader->parameters[i].current);
}
}
static bool gl_glsl_set_mvp(void *shader_data, const void *mat_data)
{
int loc;
glsl_shader_data_t *glsl = (glsl_shader_data_t*)shader_data;
if (!glsl || !glsl->shader->modern)
return false;
loc = glsl->uniforms[glsl->active_idx].mvp;
if (loc >= 0)
{
const math_matrix_4x4 *mat = (const math_matrix_4x4*)mat_data;
if ( (glsl->current_idx != glsl->active_idx) ||
(mat->data != glsl->current_mat_data_pointer[glsl->active_idx]) ||
(*mat->data != glsl->current_mat_data[glsl->active_idx]))
{
glUniformMatrix4fv(loc, 1, GL_FALSE, mat->data);
glsl->current_idx = glsl->active_idx;
glsl->current_mat_data_pointer[glsl->active_idx] = (float*)mat->data;
glsl->current_mat_data[glsl->active_idx] = *mat->data;
}
}
return true;
}
#define gl_glsl_set_coord_array(attribs, coord1, coord2, coords, size, multiplier) \
unsigned y; \
attribs[attribs_size].loc = (GLint)coord1; \
attribs[attribs_size].size = (GLsizei)multiplier; \
attribs[attribs_size].offset = (GLsizei)(size * sizeof(GLfloat)); \
for (y = 0; y < (multiplier * coords->vertices); y++) \
buffer[y + size] = coord2[y]; \
size += multiplier * coords->vertices; \
static bool gl_glsl_set_coords(void *shader_data,
const struct video_coords *coords)
{
GLfloat short_buffer[4 * (2 + 2 + 4 + 2)];
struct glsl_attrib attribs[4];
size_t attribs_size = 0;
size_t size = 0;
GLfloat *buffer = short_buffer;
glsl_shader_data_t *glsl = (glsl_shader_data_t*)shader_data;
const struct shader_uniforms *uni = glsl
? &glsl->uniforms[glsl->active_idx] : NULL;
if (!glsl || !glsl->shader->modern || !coords)
{
if (coords)
return false;
return true;
}
if (coords->vertices > 4)
{
/* Avoid hitting malloc on every single regular quad draw. */
size_t elems = 0;
elems += (uni->color >= 0) * 4;
elems += (uni->tex_coord >= 0) * 2;
elems += (uni->vertex_coord >= 0) * 2;
elems += (uni->lut_tex_coord >= 0) * 2;
elems *= coords->vertices * sizeof(GLfloat);
buffer = (GLfloat*)malloc(elems);
if (!buffer)
return false;
}
if (uni->tex_coord >= 0)
{
gl_glsl_set_coord_array(attribs, uni->tex_coord,
coords->tex_coord, coords, size, 2);
attribs_size++;
}
if (uni->vertex_coord >= 0)
{
gl_glsl_set_coord_array(attribs, uni->vertex_coord,
coords->vertex, coords, size, 2);
attribs_size++;
}
if (uni->color >= 0)
{
gl_glsl_set_coord_array(attribs, uni->color,
coords->color, coords, size, 4);
attribs_size++;
}
if (uni->lut_tex_coord >= 0)
{
gl_glsl_set_coord_array(attribs, uni->lut_tex_coord,
coords->lut_tex_coord, coords, size, 2);
attribs_size++;
}
if (size)
gl_glsl_set_attribs(glsl,
glsl->vbo[glsl->active_idx].vbo_primary,
&glsl->vbo[glsl->active_idx].buffer_primary,
&glsl->vbo[glsl->active_idx].size_primary,
buffer, size,
attribs, attribs_size);
if (buffer != short_buffer)
free(buffer);
return true;
}
static void gl_glsl_use(void *data, void *shader_data, unsigned idx, bool set_active)
{
GLuint id;
if (set_active)
{
glsl_shader_data_t *glsl = (glsl_shader_data_t*)shader_data;
if (!glsl)
return;
gl_glsl_reset_attrib(glsl);
glsl->active_idx = idx;
id = glsl->prg[idx].id;
}
else
id = (GLuint)idx;
glUseProgram(id);
}
static unsigned gl_glsl_num(void *data)
{
glsl_shader_data_t *glsl = (glsl_shader_data_t*)data;
if (glsl && glsl->shader)
return glsl->shader->passes;
return 0;
}
static bool gl_glsl_filter_type(void *data, unsigned idx, bool *smooth)
{
glsl_shader_data_t *glsl = (glsl_shader_data_t*)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(void *data, unsigned idx)
{
glsl_shader_data_t *glsl = (glsl_shader_data_t*)data;
if (glsl && idx)
return glsl->shader->pass[idx - 1].wrap;
return RARCH_WRAP_BORDER;
}
static void gl_glsl_shader_scale(void *data, unsigned idx, struct gfx_fbo_scale *scale)
{
glsl_shader_data_t *glsl = (glsl_shader_data_t*)data;
if (glsl && idx)
*scale = glsl->shader->pass[idx - 1].fbo;
else
scale->valid = false;
}
static unsigned gl_glsl_get_prev_textures(void *data)
{
unsigned i, j;
unsigned max_prev = 0;
glsl_shader_data_t *glsl = (glsl_shader_data_t*)data;
if (!glsl)
return 0;
for (i = 1; i <= glsl->shader->passes; i++)
for (j = 0; j < PREV_TEXTURES; j++)
if (glsl->uniforms[i].prev[j].texture >= 0)
max_prev = MAX(j + 1, max_prev);
return max_prev;
}
static bool gl_glsl_mipmap_input(void *data, unsigned idx)
{
glsl_shader_data_t *glsl = (glsl_shader_data_t*)data;
if (glsl && idx)
return glsl->shader->pass[idx - 1].mipmap;
return false;
}
static bool gl_glsl_get_feedback_pass(void *data, unsigned *index)
{
glsl_shader_data_t *glsl = (glsl_shader_data_t*)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 *data)
{
glsl_shader_data_t *glsl = (glsl_shader_data_t*)data;
if (!glsl)
return NULL;
return glsl->shader;
}
static void gl_glsl_get_flags(uint32_t *flags)
{
BIT32_SET(*flags, GFX_CTX_FLAGS_SHADERS_GLSL);
}
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_init_menu_shaders,
gl_glsl_deinit,
gl_glsl_set_params,
gl_glsl_set_uniform_parameter,
gl_glsl_compile_program,
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,
gl_glsl_get_flags,
RARCH_SHADER_GLSL,
"glsl"
};
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