graphics: pbr: Extract shader code to separate files.

1 files changed, 42 insertions, 0 deletions

diff --git a/data/shaders/pbr-frag.glsl b/data/shaders/pbr-frag.glsl
new file mode 100644
index 0000000..813f9a9
--- /dev/null
+++ b/data/shaders/pbr-frag.glsl
@@ -0,0 +1,42 @@
+// -*- mode: c -*-
+
+#ifdef GLSL120
+attribute vec2 fragTexcoord0;
+attribute vec2 fragTexcoord1
+attribute vec4 fragColor0;
+#else
+in vec2 fragTexcoord0;
+in vec2 fragTexcoord1;
+in vec4 fragColor0;
+#endif
+
+#ifdef GLSL330
+out vec4 fragColor;
+#endif
+
+uniform bool textured0;
+uniform bool textured1;
+uniform bool vertexColored;
+uniform vec3 baseColorFactor;
+uniform sampler2D texture0;
+uniform sampler2D texture1;
+
+void main (void) {
+  vec4 finalColor = vec4(baseColorFactor, 1.0);
+  // Vertex coloring.
+  if(vertexColored) {
+    finalColor *= fragColor0;
+  }
+  // Texture sampling.
+  if(textured0) {
+    finalColor *= texture(texture0, fragTexcoord0);
+  }
+  if(textured1) {
+    finalColor += texture(texture1, fragTexcoord1);
+  }
+#ifdef GLSL330
+  fragColor = finalColor;
+#else
+  gl_FragColor = finalColor;
+#endif
+}