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 (CGP),
* load the file here, and pretend
* we were really using XML all along.
*/
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;
}
*pass->source.path = '\0';
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 bool gl_glsl_compile_programs(
glsl_shader_data_t *glsl, GLuint *gl_prog)
{
unsigned i;
for (i = 0; i < glsl->shader->passes; i++)
{
const char *vertex = NULL;
const char *fragment = NULL;
struct video_shader_pass *pass = (struct video_shader_pass*)
&glsl->shader->pass[i];
/* If we load from GLSLP (CGP),
* load the file here, and pretend
* we were really using XML all along.
*/
if (*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;
}
*pass->source.path = '\0';
vertex = pass->source.string.vertex;
fragment = pass->source.string.fragment;
gl_prog[i] = gl_glsl_compile_program(glsl, vertex, fragment, i);
if (!gl_prog[i])
{
RARCH_ERR("Failed to create GL program #%u.\n", i);
return false;
}
}
return true;
}
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
config_file_t *conf = NULL;
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;
if (!string_is_empty(path))
{
bool ret = false;
const char *path_ext = path_get_extension(path);
if (string_is_equal_fast(path_ext, "glslp", 5))
{
conf = config_file_new(path);
if (conf)
{
ret = video_shader_read_conf_cgp(conf, glsl->shader);
glsl->shader->modern = true;
}
}
else if (string_is_equal_fast(path_ext, "glsl", 4))
{
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;
}
if (!string_is_empty(path))
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_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
if (glsl->shader->variables)
{
retro_ctx_memory_info_t mem_info;
struct state_tracker_info info;
mem_info.id = RETRO_MEMORY_SYSTEM_RAM;
core_get_memory(&mem_info);
info.wram = (uint8_t*)mem_info.data;
info.info = glsl->shader->variable;
info.info_elem = glsl->shader->variables;
info.script = NULL;
info.script_class = NULL;
#ifdef HAVE_PYTHON
info.script = glsl->shader->script;
if (*glsl->shader->script_class)
info.script_class= glsl->shader->script_class;
#endif
info.script_is_file = NULL;
glsl->state_tracker = state_tracker_init(&info);
if (!glsl->state_tracker)
RARCH_WARN("Failed to init state tracker.\n");
}
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];
}
#ifdef HAVE_SHADERPIPELINE
#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 = 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 = stock_fragment_xmb;
#endif
shader_prog_info.is_file = false;
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 = stock_fragment_xmb_ribbon_simple;
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_modern;
#else
shader_prog_info.vertex = glsl_core ? stock_vertex_xmb_snow_modern : stock_vertex_xmb_snow_legacy;
#endif
shader_prog_info.fragment = stock_fragment_xmb_simple_snow;
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_modern;
#else
shader_prog_info.vertex = glsl_core ? stock_vertex_xmb_snow_modern : stock_vertex_xmb_snow_legacy;
#endif
shader_prog_info.fragment = stock_fragment_xmb_snow;
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_modern;
#else
shader_prog_info.vertex = glsl_core ? stock_vertex_xmb_snow_modern : stock_vertex_xmb_snow_legacy;
#endif
shader_prog_info.fragment = stock_fragment_xmb_bokeh;
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]);
#endif
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 (conf)
config_file_free(conf);
if (glsl)
free(glsl);
return NULL;
}
static void *gl_glsl_init(void *data, const char *path)
{
unsigned i;
config_file_t *conf = NULL;
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;
#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");
goto error;
}
#endif
glsl->shader = (struct video_shader*)calloc(1, sizeof(*glsl->shader));
if (!glsl->shader)
goto error;
if (path)
{
bool ret;
const char *path_ext = path_get_extension(path);
if (string_is_equal(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 (string_is_equal(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");
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;
}
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] = gl_glsl_compile_program(glsl, stock_vertex, stock_fragment, 0)))
{
RARCH_ERR("GLSL stock programs failed to compile.\n");
goto error;
}
if (!gl_glsl_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++)
gl_glsl_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)
{
retro_ctx_memory_info_t mem_info;
struct state_tracker_info info = {0};
mem_info.id = RETRO_MEMORY_SYSTEM_RAM;
core_ctl(CORE_CTL_RETRO_GET_MEMORY, &mem_info);
info.wram = (uint8_t*)mem_info.data;
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] = gl_glsl_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);
gl_glsl_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);
}
return glsl;
error:
gl_glsl_destroy_resources(glsl);
if (glsl)
free(glsl);
return NULL;
}
