render: Add vector path rendering module.

1 files changed, 44 insertions, 0 deletions

diff --git a/data/shaders/path-vert.glsl b/data/shaders/path-vert.glsl
new file mode 100644
index 0000000..38fa5d2
--- /dev/null
+++ b/data/shaders/path-vert.glsl
@@ -0,0 +1,44 @@
+// -*- mode: c -*-
+
+#ifdef GLSL330
+layout (location = 0) in vec2 position;
+layout (location = 1) in vec2 tex;
+layout (location = 2) in float strokeLength;
+#elif defined(GLSL130)
+in vec2 position;
+in vec2 tex;
+in float strokeLength;
+#elif defined(GLSL120)
+attribute vec2 position;
+attribute vec2 tex;
+attribute float strokeLength;
+#endif
+
+#ifdef GLSL120
+varying vec2 fragTex;
+varying float fragStrokeLength;
+#else
+out vec2 fragTex;
+out float fragStrokeLength;
+#endif
+
+uniform mat4 mvp;
+uniform vec4 color;
+uniform int mode;
+uniform int strokeClosed;
+
+void main(void) {
+    // Short-circuit because the fragments will just be discarded anyway.
+    if (color.a <= 0.0) {
+      gl_Position = vec4(0.0, 0.0, 0.0, 1.0);
+      return;
+    }
+
+    // Stroke specific setup.
+    if (mode == 1) {
+      fragStrokeLength = strokeLength;
+    }
+
+    fragTex = tex;
+    gl_Position = mvp * vec4(position.xy, 0.0, 1.0);
+}