added initial GL shader code
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libobs-opengl/gl-shader.c
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292
libobs-opengl/gl-shader.c
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@ -0,0 +1,292 @@
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/******************************************************************************
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Copyright (C) 2013 by Hugh Bailey <obs.jim@gmail.com>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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******************************************************************************/
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#include <assert.h>
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#include "gl-subsystem.h"
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#include "gl-shaderparser.h"
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static inline void shader_param_init(struct shader_param *param)
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{
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memset(param, 0, sizeof(struct shader_param));
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}
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static inline void shader_param_free(struct shader_param *param)
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{
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bfree(param->name);
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da_free(param->cur_value);
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da_free(param->def_value);
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}
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static void gl_get_program_info(GLuint program, char **error_string)
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{
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char *errors;
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GLint info_len = 0;
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GLsizei chars_written = 0;
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glGetProgramiv(program, GL_INFO_LOG_LENGTH, &info_len);
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if (!gl_success("glGetProgramiv") || !info_len)
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return;
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errors = bmalloc(info_len+1);
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memset(errors, 0, info_len+1);
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glGetProgramInfoLog(program, info_len, &chars_written, errors);
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*error_string = errors;
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}
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static bool gl_add_param(struct gs_shader *shader, struct shader_var *var,
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GLint *texture_id)
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{
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struct shader_param param = {0};
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param.array_count = var->array_count;
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param.name = bstrdup(var->name);
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param.type = get_shader_param_type(var->type);
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if (param.type == SHADER_PARAM_TEXTURE) {
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param.sampler_id = var->gl_sampler_id;
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param.texture_id = (*texture_id)++;
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} else {
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param.changed = true;
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}
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da_move(param.def_value, var->default_val);
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da_copy(param.cur_value, param.def_value);
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param.param = glGetUniformLocation(shader->program, param.name);
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if (!gl_success("glGetUniformLocation"))
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return false;
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return true;
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}
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static inline bool gl_add_params(struct gs_shader *shader,
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struct gl_shader_parser *glsp)
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{
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size_t i;
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GLint tex_id = 0;
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for (i = 0; i < glsp->parser.params.num; i++)
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if (!gl_add_param(shader, glsp->parser.params.array+i, &tex_id))
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return false;
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return true;
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}
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static void gl_add_sampler(struct gs_shader *shader,
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struct shader_sampler *sampler)
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{
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struct gs_sampler new_sampler = {0};
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struct gs_sampler_info info;
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shader_sampler_convert(sampler, &info);
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convert_sampler_info(&new_sampler, &info);
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da_push_back(shader->samplers, &new_sampler);
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}
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static inline void gl_add_samplers(struct gs_shader *shader,
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struct gl_shader_parser *glsp)
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{
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size_t i;
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for (i = 0; i < glsp->parser.samplers.num; i++) {
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struct shader_sampler *sampler = glsp->parser.samplers.array+i;
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gl_add_sampler(shader, sampler);
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}
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}
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static bool gl_shader_init(struct gs_shader *shader,
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struct gl_shader_parser *glsp,
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const char *file, char **error_string)
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{
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GLenum type = convert_shader_type(shader->type);
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int compiled = 0;
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bool success = true;
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shader->program = glCreateShaderProgramv(type, 1,
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&glsp->gl_string.array);
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gl_success("glCreateShaderProgramv");
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if (!shader->program)
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return false;
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glGetProgramiv(shader->program, GL_VALIDATE_STATUS, &compiled);
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if (!gl_success("glGetProgramiv"))
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return false;
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if (!compiled)
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success = false;
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gl_get_program_info(shader->program, error_string);
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if (success)
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success = gl_add_params(shader, glsp);
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if (success)
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gl_add_samplers(shader, glsp);
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return success;
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}
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static struct gs_shader *shader_create(device_t device, enum shader_type type,
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const char *shader_str, const char *file, char **error_string)
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{
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struct gs_shader *shader = bmalloc(sizeof(struct gs_shader));
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struct gl_shader_parser glsp;
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bool success = true;
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memset(shader, 0, sizeof(struct gs_shader));
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shader->type = type;
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gl_shader_parser_init(&glsp);
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if (!gl_shader_parse(&glsp, shader_str, file))
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success = false;
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else
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success = gl_shader_init(shader, &glsp, file, error_string);
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if (!success) {
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shader_destroy(shader);
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shader = NULL;
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}
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gl_shader_parser_free(&glsp);
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return shader;
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}
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shader_t device_create_vertexshader(device_t device,
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const char *shader, const char *file,
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char **error_string)
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{
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return shader_create(device, SHADER_VERTEX, shader, file, error_string);
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}
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shader_t device_create_pixelshader(device_t device,
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const char *shader, const char *file,
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char **error_string)
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{
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return shader_create(device, SHADER_PIXEL, shader, file, error_string);
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}
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void shader_destroy(shader_t shader)
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{
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size_t i;
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if (!shader)
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return;
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for (i = 0; i < shader->params.num; i++)
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shader_param_free(shader->params.array+i);
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if (shader->program) {
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glDeleteProgram(shader->program);
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gl_success("glDeleteProgram");
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}
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da_free(shader->samplers);
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da_free(shader->params);
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bfree(shader);
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}
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int shader_numparams(shader_t shader)
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{
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return (int)shader->params.num;
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}
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sparam_t shader_getparambyidx(shader_t shader, int param)
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{
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assert(param < shader->params.num);
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return shader->params.array+param;
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}
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sparam_t shader_getparambyname(shader_t shader, const char *name)
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{
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size_t i;
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for (i = 0; i < shader->params.num; i++) {
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struct shader_param *param = shader->params.array+i;
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if (strcmp(param->name, name) == 0)
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return param;
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}
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return NULL;
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}
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void shader_getparaminfo(shader_t shader, sparam_t param,
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struct shader_param_info *info)
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{
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info->type = param->type;
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info->name = param->name;
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}
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sparam_t shader_getviewprojmatrix(shader_t shader)
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{
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return shader->viewproj;
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}
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sparam_t shader_getworldmatrix(shader_t shader)
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{
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return shader->world;
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}
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void shader_setbool(shader_t shader, sparam_t param, bool val)
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{
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}
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void shader_setfloat(shader_t shader, sparam_t param, float val)
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{
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}
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void shader_setint(shader_t shader, sparam_t param, int val)
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{
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}
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void shader_setmatrix3(shader_t shader, sparam_t param,
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const struct matrix3 *val)
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{
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}
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void shader_setmatrix4(shader_t shader, sparam_t param,
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const struct matrix4 *val)
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{
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}
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void shader_setvec2(shader_t shader, sparam_t param,
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const struct vec2 *val)
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{
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}
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void shader_setvec3(shader_t shader, sparam_t param,
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const struct vec3 *val)
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{
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}
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void shader_setvec4(shader_t shader, sparam_t param,
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const struct vec4 *val)
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{
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}
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void shader_settexture(shader_t shader, sparam_t param, texture_t val)
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{
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}
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void shader_setval(shader_t shader, sparam_t param, const void *val,
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size_t size)
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{
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}
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void shader_setdefault(shader_t shader, sparam_t param)
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{
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}
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static void gl_write_function_contents(struct gl_shader_parser *glsp,
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struct cf_token **p_token, const char *end);
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static inline struct shader_var *sp_getparam(struct gl_shader_parser *glsp,
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struct cf_token *token)
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{
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size_t i;
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for (i = 0; i < glsp->parser.params.num; i++) {
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struct shader_var *param = glsp->parser.params.array+i;
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if (strref_cmp(&token->str, param->name) == 0)
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return param;
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}
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return NULL;
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}
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static inline size_t sp_getsampler(struct gl_shader_parser *glsp,
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struct cf_token *token)
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{
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size_t i;
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for (i = 0; i < glsp->parser.samplers.num; i++) {
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struct shader_sampler *sampler = glsp->parser.samplers.array+i;
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if (strref_cmp(&token->str, sampler->name) == 0)
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return i;
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}
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return -1;
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}
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static bool gl_write_type_n(struct gl_shader_parser *glsp,
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const char *type, size_t len)
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{
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@ -251,8 +277,16 @@ static inline bool gl_write_texture_call(struct gl_shader_parser *glsp,
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struct shader_var *var, const char *call)
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{
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struct cf_parser *cfp = &glsp->parser.cfp;
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if (!go_to_token(cfp, ",", NULL))
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return false;
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size_t sampler_id = -1;
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if (!next_token(cfp)) return false;
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if (!token_is(cfp, "(")) return false;
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if (!next_token(cfp)) return false;
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sampler_id = sp_getsampler(glsp, cfp->cur_token);
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if (sampler_id == -1) return false;
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var->gl_sampler_id = sampler_id;
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dstr_cat(&glsp->gl_string, call);
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dstr_cat(&glsp->gl_string, "(");
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@ -294,19 +328,6 @@ static bool gl_write_texture_code(struct gl_shader_parser *glsp,
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return true;
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}
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static inline struct shader_var *sp_getparam(struct gl_shader_parser *glsp,
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struct cf_token *token)
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{
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size_t i;
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for (i = 0; i < glsp->parser.params.num; i++) {
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struct shader_var *param = glsp->parser.params.array+i;
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if (strref_cmp(&token->str, param->name) == 0)
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return param;
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}
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return NULL;
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}
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static bool gl_write_intrinsic(struct gl_shader_parser *glsp,
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struct cf_token **p_token)
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{
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struct gl_shader_parser {
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struct dstr gl_string;
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struct shader_parser parser;
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DARRAY(uint32_t) texture_samplers;
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};
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static inline void gl_shader_parser_init(struct gl_shader_parser *glsp)
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@ -17,6 +17,17 @@
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#include "gl-subsystem.h"
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void convert_sampler_info(struct gs_sampler *sampler,
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struct gs_sampler_info *info)
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{
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convert_filter(info->filter, &sampler->min_filter,
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&sampler->mag_filter);
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sampler->address_u = convert_address_mode(info->address_u);
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sampler->address_v = convert_address_mode(info->address_v);
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sampler->address_w = convert_address_mode(info->address_w);
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sampler->max_anisotropy = info->max_anisotropy;
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}
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device_t device_create(struct gs_init_data *info)
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{
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struct gs_device *device = bmalloc(sizeof(struct gs_device));
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@ -104,18 +115,6 @@ samplerstate_t device_create_samplerstate(device_t device,
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{
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}
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shader_t device_create_vertexshader(device_t device,
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const char *shader, const char *file,
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char **error_string)
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{
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}
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shader_t device_create_pixelshader(device_t device,
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const char *shader, const char *file,
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char **error_string)
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{
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}
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vertbuffer_t device_create_vertexbuffer(device_t device,
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struct vb_data *data, uint32_t flags)
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{
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@ -433,82 +432,3 @@ size_t indexbuffer_numindices(indexbuffer_t indexbuffer)
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enum gs_index_type indexbuffer_gettype(indexbuffer_t indexbuffer)
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{
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}
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void shader_destroy(shader_t shader)
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{
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}
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int shader_numparams(shader_t shader)
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{
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}
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sparam_t shader_getparambyidx(shader_t shader, int param)
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{
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}
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sparam_t shader_getparambyname(shader_t shader, const char *name)
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{
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}
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void shader_getparaminfo(shader_t shader, sparam_t param,
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struct shader_param_info *info)
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{
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}
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sparam_t shader_getviewprojmatrix(shader_t shader)
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{
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}
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sparam_t shader_getworldmatrix(shader_t shader)
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{
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}
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void shader_setbool(shader_t shader, sparam_t param, bool val)
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{
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}
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void shader_setfloat(shader_t shader, sparam_t param, float val)
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{
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}
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void shader_setint(shader_t shader, sparam_t param, int val)
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{
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}
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void shader_setmatrix3(shader_t shader, sparam_t param,
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const struct matrix3 *val)
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{
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}
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void shader_setmatrix4(shader_t shader, sparam_t param,
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const struct matrix4 *val)
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{
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}
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void shader_setvec2(shader_t shader, sparam_t param,
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const struct vec2 *val)
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{
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}
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void shader_setvec3(shader_t shader, sparam_t param,
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const struct vec3 *val)
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{
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}
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void shader_setvec4(shader_t shader, sparam_t param,
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const struct vec4 *val)
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{
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}
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void shader_settexture(shader_t shader, sparam_t param, texture_t val)
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{
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}
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void shader_setval(shader_t shader, sparam_t param, const void *val,
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size_t size)
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{
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}
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void shader_setdefault(shader_t shader, sparam_t param)
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{
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}
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|
@ -18,6 +18,7 @@
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#ifndef GL_SUBSYSTEM_H
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#define GL_SUBSYSTEM_H
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#include "util/darray.h"
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#include "graphics/graphics.h"
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#include "glew/include/GL/glew.h"
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#include "gl-helpers.h"
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@ -85,6 +86,108 @@ static inline GLint convert_zstencil_format(enum gs_zstencil_format format)
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}
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}
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static inline GLenum convert_shader_type(enum shader_type type)
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{
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switch (type) {
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default:
|
||||
case SHADER_VERTEX: return GL_VERTEX_SHADER;
|
||||
case SHADER_PIXEL: return GL_FRAGMENT_SHADER;
|
||||
}
|
||||
}
|
||||
|
||||
static inline void convert_filter(enum gs_sample_filter filter,
|
||||
GLint *min_filter, GLint *mag_filter)
|
||||
{
|
||||
switch (filter) {
|
||||
case GS_FILTER_ANISOTROPIC:
|
||||
*min_filter = GL_LINEAR_MIPMAP_LINEAR;
|
||||
*mag_filter = GL_LINEAR;
|
||||
break;
|
||||
default:
|
||||
case GS_FILTER_POINT:
|
||||
*min_filter = GL_NEAREST_MIPMAP_NEAREST;
|
||||
*mag_filter = GL_NEAREST;
|
||||
break;
|
||||
case GS_FILTER_LINEAR:
|
||||
*min_filter = GL_LINEAR_MIPMAP_LINEAR;
|
||||
*mag_filter = GL_LINEAR;
|
||||
break;
|
||||
case GS_FILTER_MIN_MAG_POINT_MIP_LINEAR:
|
||||
*min_filter = GL_NEAREST_MIPMAP_LINEAR;
|
||||
*mag_filter = GL_NEAREST;
|
||||
break;
|
||||
case GS_FILTER_MIN_POINT_MAG_LINEAR_MIP_POINT:
|
||||
*min_filter = GL_NEAREST_MIPMAP_NEAREST;
|
||||
*mag_filter = GL_LINEAR;
|
||||
break;
|
||||
case GS_FILTER_MIN_POINT_MAG_MIP_LINEAR:
|
||||
*min_filter = GL_NEAREST_MIPMAP_LINEAR;
|
||||
*mag_filter = GL_LINEAR;
|
||||
break;
|
||||
case GS_FILTER_MIN_LINEAR_MAG_MIP_POINT:
|
||||
*min_filter = GL_LINEAR_MIPMAP_NEAREST;
|
||||
*mag_filter = GL_NEAREST;
|
||||
break;
|
||||
case GS_FILTER_MIN_LINEAR_MAG_POINT_MIP_LINEAR:
|
||||
*min_filter = GL_LINEAR_MIPMAP_LINEAR;
|
||||
*mag_filter = GL_NEAREST;
|
||||
break;
|
||||
case GS_FILTER_MIN_MAG_LINEAR_MIP_POINT:
|
||||
*min_filter = GL_LINEAR_MIPMAP_NEAREST;
|
||||
*mag_filter = GL_LINEAR;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
static inline GLint convert_address_mode(enum gs_address_mode mode)
|
||||
{
|
||||
switch (mode) {
|
||||
default:
|
||||
case GS_ADDRESS_WRAP: return GL_REPEAT;
|
||||
case GS_ADDRESS_CLAMP: return GL_CLAMP;
|
||||
case GS_ADDRESS_MIRROR: return GL_MIRRORED_REPEAT;
|
||||
case GS_ADDRESS_BORDER: return GL_CLAMP_TO_BORDER;
|
||||
case GS_ADDRESS_MIRRORONCE: return GL_MIRROR_CLAMP_EXT;
|
||||
}
|
||||
}
|
||||
|
||||
extern void convert_sampler_info(struct gs_sampler *sampler,
|
||||
struct gs_sampler_info *info);
|
||||
|
||||
struct gs_sampler {
|
||||
GLint min_filter;
|
||||
GLint mag_filter;
|
||||
GLint address_u;
|
||||
GLint address_v;
|
||||
GLint address_w;
|
||||
GLint max_anisotropy;
|
||||
};
|
||||
|
||||
struct shader_param {
|
||||
char *name;
|
||||
enum shader_param_type type;
|
||||
GLint param;
|
||||
GLint texture_id;
|
||||
size_t sampler_id;
|
||||
int array_count;
|
||||
|
||||
DARRAY(uint8_t) cur_value;
|
||||
DARRAY(uint8_t) def_value;
|
||||
bool changed;
|
||||
};
|
||||
|
||||
struct gs_shader {
|
||||
device_t device;
|
||||
enum shader_type type;
|
||||
GLuint program;
|
||||
|
||||
struct shader_param *viewproj;
|
||||
struct shader_param *world;
|
||||
|
||||
DARRAY(struct gs_sampler) samplers;
|
||||
DARRAY(struct shader_param) params;
|
||||
};
|
||||
|
||||
struct gs_texture {
|
||||
device_t device;
|
||||
enum gs_texture_type type;
|
||||
|
@ -49,6 +49,7 @@ struct shader_var {
|
||||
char *mapping;
|
||||
enum shader_var_type var_type;
|
||||
int array_count;
|
||||
size_t gl_sampler_id; /* optional: used/parsed by GL */
|
||||
|
||||
DARRAY(uint8_t) default_val;
|
||||
};
|
||||
|
@ -162,6 +162,7 @@
|
||||
</ItemGroup>
|
||||
<ItemGroup>
|
||||
<ClCompile Include="..\..\..\libobs-opengl\gl-helpers.c" />
|
||||
<ClCompile Include="..\..\..\libobs-opengl\gl-shader.c" />
|
||||
<ClCompile Include="..\..\..\libobs-opengl\gl-shaderparser.c" />
|
||||
<ClCompile Include="..\..\..\libobs-opengl\gl-subsystem.c" />
|
||||
<ClCompile Include="..\..\..\libobs-opengl\gl-texture2d.c" />
|
||||
|
@ -47,5 +47,8 @@
|
||||
<ClCompile Include="..\..\..\libobs-opengl\gl-shaderparser.c">
|
||||
<Filter>Source Files</Filter>
|
||||
</ClCompile>
|
||||
<ClCompile Include="..\..\..\libobs-opengl\gl-shader.c">
|
||||
<Filter>Source Files</Filter>
|
||||
</ClCompile>
|
||||
</ItemGroup>
|
||||
</Project>
|
Loading…
x
Reference in New Issue
Block a user