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63 lines
1.6 KiB
63 lines
1.6 KiB
11 years ago
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#pragma once
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#include <moggle/core/gl.hpp>
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#include <moggle/core/gl_type_traits.hpp>
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/*
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* NOTE:
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* in glTexImage2D, border MUST be 0, so this parameter is left out in this interface.
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*/
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namespace moggle {
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struct texture {
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explicit texture(bool create_now = false) {
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if(create_now) create();
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}
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~texture() { destroy(); }
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texture(texture const &) = delete;
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texture & operator=(texture const&) = delete;
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texture(texture && t) : id(t.id) { t.id = 0; }
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texture & operator=(texture && t) { std::swap(id, t.id); return *this; }
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bool created() const { return id; }
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explicit operator bool() const { return created(); }
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void create(){ if(!id) gl::generate_textures(1, &id); }
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void destroy(){ gl::delete_textures(1, &id); id = 0; }
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void bind(GLenum target) {
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create();
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gl::bind_texture(target, id);
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}
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GLuint get_id() const { return id; }
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template <typename T>
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void image_2d(GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLenum format, const T * data){
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bind(target);
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auto type = gl_type_traits<T>::gl_constant;
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gl::texture_image_2d(target, level, internalformat, width, height, 0, format, type, data);
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}
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void image_2d(GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, std::nullptr_t){
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bind(target);
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gl::texture_image_2d(target, level, internalformat, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
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}
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//! creates empty texture
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static texture create(GLsizei width, GLsizei height, GLint internalformat = GL_RGBA, GLenum target = GL_TEXTURE_2D){
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texture t;
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t.image_2d(target, 0, internalformat, width, height, nullptr);
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return t;
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}
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private:
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GLuint id = 0;
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};
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}
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