60 lines
1.4 KiB
C
60 lines
1.4 KiB
C
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#pragma once
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#ifdef __linux__
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#include <GL/glew.h>
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#include <GL/gl.h>
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#else
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#include <gl/glew.h>
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#include <gl/gl.h>
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#endif
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#include "shader.h"
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#include <string>
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namespace simpleengine::gfx {
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/**
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* @brief Shader Storage buffer Object
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*
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* https://www.khronos.org/opengl/wiki/Shader_Storage_Buffer_Object
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*/
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class SSBO {
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private:
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GLuint bind_index;
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void gen_buffer() {
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glGenBuffers(1, &handle);
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}
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public:
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GLuint handle;
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gfx::Shader& shader;
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SSBO(gfx::Shader& shader, GLuint bind_index) : bind_index(bind_index), shader(shader) {
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gen_buffer();
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}
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SSBO(gfx::Shader& shader, const std::string& ssbo_name) : shader(shader) {
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bind_index = glGetProgramResourceIndex(shader.program, GL_SHADER_STORAGE_BLOCK, ssbo_name.c_str());
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gen_buffer();
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}
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void bind_buffer() {
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glBindBuffer(GL_SHADER_STORAGE_BUFFER, handle);
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}
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void bind_ssbo() {
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, bind_index, handle);
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}
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void buffer(void* data, size_t offset, size_t size) {
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bind_buffer();
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glBufferData(GL_SHADER_STORAGE_BUFFER, size - offset, data, GL_DYNAMIC_COPY);
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}
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void unbind() {
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glBindBuffer(GL_SHADER_STORAGE_BUFFER, 0);
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}
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};
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}
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