use GLShader for BitmapLayer

2014-03-20 14:25:33 +01:00
parent c107e197f5
commit 1a9d3ca4fc
2 changed files with 59 additions and 62 deletions
--- a/vtm/resources/assets/shaders/texture_alpha.glsl
+++ b/vtm/resources/assets/shaders/texture_alpha.glsl
@@ -0,0 +1,25 @@
+#ifdef GLES
+precision mediump float;
+#endif
+attribute vec2 vertex;
+attribute vec2 tex_coord;
+uniform mat4 u_mvp;
+varying vec2 tex_c;
+void
+main(){
+  gl_Position = u_mvp * vec4(vertex, 0.0, 1.0);
+  tex_c = tex_coord;
+}
+
+$$
+
+#ifdef GLES
+precision mediump float;
+#endif
+uniform sampler2D tex;
+uniform float u_alpha;
+varying vec2 tex_c;
+void
+main(){
+  gl_FragColor = texture2D(tex, tex_c) * u_alpha;
+}