Make ConstantConditionEliminator less trigger-happy

[libs/gl.git] / tests / glsl / specialization_constants.glsl

diff --git a/tests/glsl/specialization_constants.glsl b/tests/glsl/specialization_constants.glsl
new file mode 100644 (file)
index 0000000..b5666f2
--- /dev/null
+++ b/tests/glsl/specialization_constants.glsl
@@ -0,0 +1,50 @@
+layout(constant_id=0) const bool use_texture = false;
+layout(constant_id=1) const bool use_vertex_color = false;
+uniform sampler2D tex;
+uniform mat4 mvp;
+
+#pragma MSP stage(vertex)
+layout(location=0) in vec4 position;
+layout(location=1) in vec4 color;
+layout(location=2) in vec2 texcoord;
+void main()
+{
+       passthrough;
+       gl_Position = mvp*position;
+}
+
+#pragma MSP stage(fragment)
+layout(location=0) out vec4 frag_color;
+void main()
+{
+       frag_color = vec4(1.0);
+       if(use_texture)
+               frag_color *= texture(tex, texcoord);
+       if(use_vertex_color)
+               frag_color *= color;
+}
+
+// Specialize: use_texture true
+
+/* Expected output: vertex
+uniform mat4 mvp;
+layout(location=0) in vec4 position;
+layout(location=2) in vec2 texcoord;
+out vec2 _vs_out_texcoord;
+void main()
+{
+       _vs_out_texcoord = texcoord;
+       gl_Position = mvp*position;
+}
+*/
+
+/* Expected output: fragment
+uniform sampler2D tex;
+layout(location=0) out vec4 frag_color;
+in vec2 _vs_out_texcoord;
+void main()
+{
+       frag_color = vec4(1.0);
+       frag_color *= texture(tex, _vs_out_texcoord);
+}
+*/