61c4df9503
On ES2 devices (or in forceES2 mode), we emulate the sRGB swapchain in the shader if the h/w doesn't support it. In that case, the emulation is controlled by a uniform that technically lives in the frameUniforms block. However, the frameUniforms buffer is not updated, instead, the uniform is manually set. Unfortunately, the UBO emulation overrides it with the uninitialized variable. BUGS=[377913730]