Effects/HDR/debug-histogram /sim/rendering/hdr/debug/histogram-linear /sim/rendering/hdr/debug/histogram-color Shaders/HDR/quad_matrix.vert Shaders/HDR/mvr.vert Shaders/HDR/debug_histogram.frag Shaders/HDR/histogram.glsl QUAD_TEXCOORD_RAW histogram_tex sampler-2d 0 is_linear bool is-linear enable_color bool enable-color