SuperTuxKart 1.5 upstream source (from official release tarball)

data/shaders/ge_shaders/transparent.frag

@@ -0,0 +1,19 @@
+layout(location = 0) in vec4 f_vertex_color;
+layout(location = 1) in vec2 f_uv;
+layout(location = 3) flat in int f_material_id;
+
+layout(location = 0) out vec4 o_color;
+
+#include "utils/constants_utils.glsl"
+#include "utils/sample_mesh_texture.glsl"
+
+void main()
+{
+    vec4 color = sampleMeshTexture0(f_material_id, f_uv) * f_vertex_color;
+    vec3 mixed_color = color.xyz;
+    float alpha = color.w;
+#ifdef PBR_ENABLED
+    mixed_color = convertColor(mixed_color);
+#endif
+    o_color = vec4(mixed_color * alpha, alpha);
+}