![]() ![]() This is where the demote and discard instructions come in to the rescue. ![]() Uninitialized, which is undefined behaviour that will most likely result in rainbow-puke graphics being sent to your screen. When used like this, the colour data of these shader instances remains ![]() This is a problem, however, as fragments shaders are always expected to write into the frame-buffer. In some cases, these shaders are used to perform subordinate calculations instead, such as derivatives. The cause of the problem boils down to the drivers of a certain vendor (AMD) not properly reading shader attributes near a demote or discard instruction.Īmong the many programs that run on the GPU to render graphics, fragment shaders are in charge of calculating the colour of every pixel written into the frame-buffer that willīe sent to your screen. ![]()
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