122 lines
3.0 KiB
C
122 lines
3.0 KiB
C
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#pragma once
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#ifdef _WIN32
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#ifndef NOMINMAX
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#define NOMINMAX
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#endif
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#include <windows.h>
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#endif
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#ifdef USE_GLAD
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#include <glad/glad.h>
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#else
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#include <GL/glew.h>
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#endif
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#include <memory>
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#include <utility>
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#pragma push_macro("OPENGL_OBJECT_PLURAL")
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#ifdef OPENGL_OBJECT_PLURAL
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#undef OPENGL_OBJECT_PLURAL
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#endif
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#define OPENGL_OBJECT_PLURAL(name_, plural_) \
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struct name_ \
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{ \
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name_() { glGen##plural_(1, &id_); } \
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name_(name_ const &) = delete; \
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name_(name_ && o) noexcept : id_(o.id_) { o.id_ = 0; } \
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~name_() { glDelete##plural_(1, &id_); } \
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name_ & operator=(name_ const &) = delete; \
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name_ & operator=(name_ && o) noexcept { std::swap(id_, o.id_); return *this; } \
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GLuint id() const { return id_; } \
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private: \
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GLuint id_; \
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}
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#pragma push_macro("OPENGL_OBJECT")
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#ifdef OPENGL_OBJECT
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#undef OPENGL_OBJECT
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#endif
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#define OPENGL_OBJECT(name_) OPENGL_OBJECT_PLURAL(name_, name_ ## s)
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namespace gl
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{
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// GL 2.0
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OPENGL_OBJECT(Buffer);
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OPENGL_OBJECT(Framebuffer);
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OPENGL_OBJECT(Texture);
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OPENGL_OBJECT_PLURAL(Query, Queries);
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struct Shader
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{
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Shader(GLenum type) : id_(glCreateShader(type)) {}
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Shader(Shader const &) = delete;
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Shader(Shader && o) noexcept : id_(o.id_) { o.id_ = 0; }
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~Shader() { glDeleteShader(id_); }
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Shader & operator=(Shader const &) = delete;
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Shader & operator=(Shader && o) noexcept { std::swap(id_, o.id_); return *this; }
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GLuint id() const { return id_; }
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GLint compile(GLsizei count, GLchar const ** strings, GLint const * lengths);
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GLint compile(GLchar const * string) { return compile(1, &string, nullptr); }
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GLint compile(GLchar const * string, GLint length) { return compile(1, &string, &length); }
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std::unique_ptr<char[]> infoLog();
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private:
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GLuint id_;
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};
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struct Program
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{
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Program() : id_(glCreateProgram()) {}
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Program(Program const &) = delete;
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Program(Program && o) noexcept : id_(o.id_) { o.id_ = 0; }
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~Program() { glDeleteProgram(id_); }
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Program & operator=(Program const &) = delete;
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Program & operator=(Program && o) noexcept { std::swap(id_, o.id_); return *this; }
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GLuint id() const { return id_; }
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GLint link(std::size_t count, Shader const ** shaders); // switch to GSL span?
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template<typename... Shaders>
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GLint link(Shaders&&... shaders)
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{
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Shader const * tmp[] = { &shaders... };
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return link(sizeof...(shaders), tmp);
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}
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GLint link_by_id(std::size_t count, GLuint const * shaders); // switch to GSL span?
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template<typename... ShaderIds>
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GLint link_by_id(ShaderIds... shaderIds)
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{
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GLuint const tmp[] = {shaderIds...};
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return link_by_id(sizeof...(shaderIds), tmp);
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}
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std::unique_ptr<char[]> infoLog();
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private:
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GLuint id_;
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};
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// GL 3.0
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OPENGL_OBJECT(VertexArray);
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OPENGL_OBJECT(Renderbuffer);
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#ifdef GL_VERSION_3_2
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OPENGL_OBJECT(Sampler);
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#endif
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#ifdef GL_VERSION_4_0
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OPENGL_OBJECT(TransformFeedback);
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#endif
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#ifdef GL_VERSION_4_1
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OPENGL_OBJECT(ProgramPipeline);
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#endif
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}
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#pragma pop_macro("OPENGL_OBJECT")
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#pragma pop_macro("OPENGL_OBJECT_PLURAL")
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