Fix texture usage via materials in shadows

This is a mess of a commit much like the shader folder, need a better way of dealing
with them.

1 files changed, 12 insertions, 0 deletions

diff --git a/gfx/gl/shaders/getMaterialDetail.glsl b/gfx/gl/shaders/getMaterialDetail.glsl
new file mode 100644
index 0000000..f819fb2
--- /dev/null
+++ b/gfx/gl/shaders/getMaterialDetail.glsl
@@ -0,0 +1,12 @@
+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));
+}