Béziers on the GPU.

[ipdf/code.git] / src / shaders / rect_vert.glsl

diff --git a/src/shaders/rect_vert.glsl b/src/shaders/rect_vert.glsl
index cc15e56..a9f258a 100644 (file)
--- a/src/shaders/rect_vert.glsl
+++ b/src/shaders/rect_vert.glsl
@@ -12,6 +12,8 @@ layout(std140, binding=0) uniform ViewBounds
 
 layout(location = 0) in vec2 position;
 
+out int objectid;
+
 void main()
 {
        vec2 transformed_position;
@@ -22,4 +24,6 @@ void main()
        gl_Position.y = 1 - (transformed_position.y*2);
        gl_Position.z = 0.0;
        gl_Position.w = 1.0;
+
+       objectid = gl_VertexID / 2;
 }