Hi ive looked im trying to render my scene to a floating point fbo, for hdr lighting. But i cant get the attached renderbuffer “z-buffer” to work?
any suggestions? im running on geforce 6600
Heres some code for ya!
// init the frame and render buffers
glGenFramebuffersEXT(1, &framebuffer);
glBindRenderbufferEXT(GL_FRAMEBUFFER_EXT,framebuffer);
GET_GLERROR();
glGenTextures(1, &color_attachment0);
glBindTexture(GL_TEXTURE_2D, color_attachment0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F_ARB, TEXSIZE, TEXSIZE, 0, GL_RGBA, GL_FLOAT, NULL);
glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, color_attachment0, 0);
GET_GLERROR(0);
glGenRenderbuffersEXT(1, &renderbuffer);
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, renderbuffer);
glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT, TEXSIZE, TEXSIZE);
glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, renderbuffer);
and when i render i attach like this
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, renderbuffer);
glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, framebuffer);
glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, color_attachment0, 0);
Thanks in advance