source/modules/asura-core/graphics/canvas.cpp


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#include "Canvas.h"

namespace AsuraEngine
{
	namespace Graphics
	{

		Canvas::Canvas()
			: mWidth(0)
			, mHeight(0)
		{
			glGenFramebuffers(1, &mFBO);
			GLint current_fbo;
			glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &current_fbo);
			glBindFramebuffer(GL_FRAMEBUFFER, mFBO);
			glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, mTex, 0);
			glBindFramebuffer(GL_FRAMEBUFFER, current_fbo);
		}

		void Canvas::SetSize(uint w, uint h)
		{
			GLint current_tex; 
			glGetIntegerv(GL_TEXTURE_BINDING_2D, &current_tex);
			glBindTexture(GL_TEXTURE_2D, mTex);

			glBindTexture(GL_TEXTURE_2D, current_tex);
		}

	}
}