layout(binding = 1) uniform usampler2DRect materialData; MaterialDetail getMaterialDetail(uint midx) { if (midx > 0u) { const vec4 sPosSize = texture(materialData, uvec2(0, midx - 1u)); const uvec4 sMode = texture(materialData, uvec2(1, midx - 1u)); const uint mapmodeU = sMode.x & 0xFu; const uint mapmodeV = (sMode.x & 0xF0u) >> 1; return MaterialDetail(sPosSize.xy, sPosSize.zw, uvec2(mapmodeU, mapmodeV)); } return MaterialDetail(vec2(0, 0), vec2(0, 0), uvec2(0, 0)); }