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60 lines
1.9 KiB
C
60 lines
1.9 KiB
C
/*
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* Copyright (C) 2017 Kovid Goyal <kovid at kovidgoyal.net>
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*
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* Distributed under terms of the GPL3 license.
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*/
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#pragma once
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#include "data-types.h"
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#include "gl-wrapper.h"
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typedef struct {
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GLint size, index;
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} UniformBlock;
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typedef struct {
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GLint offset, stride, size;
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} ArrayInformation;
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typedef struct {
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char name[256];
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GLint size, location, idx;
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GLenum type;
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} Uniform;
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typedef struct {
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GLuint id;
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Uniform uniforms[256];
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GLint num_of_uniforms;
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} Program;
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void gl_init(void);
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const char* gl_version_string(void);
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void update_surface_size(int w, int h, GLuint offscreen_texture_id);
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void free_texture(GLuint *tex_id);
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void free_framebuffer(GLuint *fb_id);
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void remove_vao(ssize_t vao_idx);
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void init_uniforms(int program);
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GLuint program_id(int program);
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Program* program_ptr(int program);
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GLuint block_index(int program, const char *name);
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GLint block_size(int program, GLuint block_index);
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GLint get_uniform_location(int program, const char *name);
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GLint get_uniform_information(int program, const char *name, GLenum information_type);
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GLint attrib_location(int program, const char *name);
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ssize_t create_vao(void);
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size_t add_buffer_to_vao(ssize_t vao_idx, GLenum usage);
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void add_attribute_to_vao(int p, ssize_t vao_idx, const char *name, GLint size, GLenum data_type, GLsizei stride, void *offset, GLuint divisor);
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ssize_t alloc_vao_buffer(ssize_t vao_idx, GLsizeiptr size, size_t bufnum, GLenum usage);
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void* alloc_and_map_vao_buffer(ssize_t vao_idx, GLsizeiptr size, size_t bufnum, GLenum usage, GLenum access);
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void unmap_vao_buffer(ssize_t vao_idx, size_t bufnum);
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void* map_vao_buffer(ssize_t vao_idx, size_t bufnum, GLenum access);
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void bind_program(int program);
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void bind_vertex_array(ssize_t vao_idx);
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void bind_vao_uniform_buffer(ssize_t vao_idx, size_t bufnum, GLuint block_index);
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void unbind_vertex_array(void);
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void unbind_program(void);
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GLuint compile_shaders(GLenum shader_type, GLsizei count, const GLchar * const * string);
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