DrawBuffers2 extension and OpenGL 3.3

OpenGL OpenGL: Advanced Coding
1

Is the functionality of the DrawBuffers2 extension made core in OpenGL 3.3+, under a different name? I am looking for an equivalent to the glEnableIndexedEXT() command, to tell the GPU which color attachments should be written to.

2

glEnablei

3

It’s part of glDrawBuffers() now. Here is some example code that will clear the color bit of one color attachment, and then clear the other color attachments with a different color:

					GLenum buffers[] = {GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1, GL_COLOR_ATTACHMENT2, GL_COLOR_ATTACHMENT3, GL_COLOR_ATTACHMENT4, GL_COLOR_ATTACHMENT5, GL_COLOR_ATTACHMENT6, GL_COLOR_ATTACHMENT7};
					GLenum offsetbuffers[] = {GL_COLOR_ATTACHMENT1, GL_COLOR_ATTACHMENT2, GL_COLOR_ATTACHMENT3, GL_COLOR_ATTACHMENT4, GL_COLOR_ATTACHMENT5, GL_COLOR_ATTACHMENT6, GL_COLOR_ATTACHMENT7};
					
					//Clear color component 0 using the specified clear color
					glDrawBuffers(1,buffers);					
					glClearColor(clearcolor.x,clearcolor.y,clearcolor.z,clearcolor.w);
					glClear(clearflags);
					
					//Set clear color to black and clear color component 1-7
					glClearColor(0,0,0,0);
					glDrawBuffers(gbuffer->CountColorTextures()-1,offsetbuffers);
					glClear(GL_COLOR_BUFFER_BIT);
					
					//Restore  writing to all components
					glDrawBuffers(gbuffer->CountColorTextures(),buffers);