to test on windows

shaders/shader.slang

@@ -17,6 +17,8 @@ struct VSOutput {
     uint32_t tex_id;
 };
 
+Sampler2D textures[];
+
 static const float2 square[6] = {
     float2(-0.5, -0.5), // Top-left
     float2(-0.5,  0.5), // Bottom-left