4sides quad

shaders/rt_quad.vert

@@ -0,0 +1,27 @@
+#version 450
+
+layout(binding = 0) uniform UniformBufferObject {
+    mat4 model;
+    mat4 geom_rot;
+    mat4 view;
+    mat4 proj;
+    bool[16] use_geom_shader;
+} ubo;
+
+
+layout(location = 0) in vec3 inPosition;
+layout(location = 1) in uvec2 inRasterPos;
+layout(location = 2) in uint inVolumeStart;
+
+layout(location = 0) out uvec2 rasterPos;
+layout(location = 1) out uint volumeStart;
+
+void main() {
+    if (ubo.use_geom_shader[0]) {
+        gl_Position = ubo.geom_rot * ubo.model *  vec4(inPosition, 1.0);
+    } else {
+        gl_Position = ubo.proj * ubo.view * ubo.geom_rot * ubo.model *  vec4(inPosition, 1.0);
+    }
+    rasterPos = inRasterPos;
+    volumeStart = inVolumeStart;
+}