Error operator()(CommandBufferImpl* cmd)
{
TextureImpl& tex = m_tex.get();
BufferImpl& buff = m_buff.get();
// Bind
GLuint copyFbo = cmd->getManager().getImplementation().
getRenderingThread().getCopyFbo();
glBindFramebuffer(GL_FRAMEBUFFER, copyFbo);
// Attach texture
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
tex.getTarget(), tex.getGlName(), 0);
// Set draw buffers
GLuint drawBuff = GL_COLOR_ATTACHMENT0;
glDrawBuffers(1, &drawBuff);
// Bind buffer
ANKI_ASSERT(m_buff.getTarget() == GL_PIXEL_PACK_BUFFER);
buff.bind();
// Read pixels
GLuint format = GL_NONE, type = GL_NONE;
if(tex.getInternalFormat() == GL_RG32UI)
{
format = GL_RG_INTEGER;
type = GL_UNSIGNED_INT;
}
else if(tex.getInternalFormat() == GL_RG32F)
{
format = GL_RG;
type = GL_FLOAT;
}
else
{
ANKI_ASSERT(0 && "Not implemented");
}
glReadPixels(0, 0, tex.getWidth(), tex.getHeight(),
format, type, nullptr);
// End
buff.unbind();
glBindFramebuffer(GL_FRAMEBUFFER, 0);
return ErrorCode::NONE;
}
