1 files changed, 58 insertions, 0 deletions
diff --git a/source/blender/gpu/shaders/gpu_shader_fx_dof_hq_vert.glsl b/source/blender/gpu/shaders/gpu_shader_fx_dof_hq_vert.glsl
new file mode 100644
index 00000000000..09a0c75facc
--- /dev/null
+++ b/source/blender/gpu/shaders/gpu_shader_fx_dof_hq_vert.glsl
@@ -0,0 +1,58 @@
+uniform vec2 invrendertargetdim;
+uniform ivec2 rendertargetdim;
+/* initial uv coordinate */
+varying vec2 uvcoord;
+
+/* coordinate used for calculating radius et al set in geometry shader */
+varying vec2 particlecoord;
+
+/* downsampling coordinates */
+varying vec2 downsample1;
+varying vec2 downsample2;
+varying vec2 downsample3;
+varying vec2 downsample4;
+
+void vert_dof_downsample()
+{
+	/* gather pixels from neighbors. half dimensions means we offset half a pixel to
+	 * get this right though it's possible we may lose a pixel at some point */
+	downsample1 = gl_MultiTexCoord0.xy + vec2(-0.5, -0.5) * invrendertargetdim;
+	downsample2 = gl_MultiTexCoord0.xy + vec2(-0.5, 0.5) * invrendertargetdim;
+	downsample3 = gl_MultiTexCoord0.xy + vec2(0.5, 0.5) * invrendertargetdim;
+	downsample4 = gl_MultiTexCoord0.xy + vec2(0.5, -0.5) * invrendertargetdim;
+
+	gl_Position = gl_Vertex;
+}
+
+/* geometry shading pass, calculate a texture coordinate based on the indexed id */
+void vert_dof_coc_scatter_pass()
+{
+	vec2 pixel = vec2(rendertargetdim.x, rendertargetdim.y);
+	/* some math to get the target pixel */
+	int row = gl_InstanceID / rendertargetdim.x;
+	int column = gl_InstanceID % rendertargetdim.x;
+	uvcoord = (vec2(column, row) + vec2(0.5)) / pixel;
+
+	vec2 pos = uvcoord * 2.0 - vec2(1.0);
+	gl_Position = vec4(pos.x, pos.y, 0.0, 1.0);
+
+//	uvcoord = vec2(0.5, 0.5);
+//	gl_Position = vec4(0.0, 0.0, 0.0, 1.0);
+}
+
+void vert_dof_final()
+{
+	uvcoord = gl_MultiTexCoord0.xy;
+	gl_Position = gl_Vertex;
+}
+
+void main()
+{
+#if defined(FIRST_PASS)
+	vert_dof_downsample();
+#elif defined(SECOND_PASS)
+	vert_dof_coc_scatter_pass();
+#else
+	vert_dof_final();
+#endif
+}
+\ No newline at end of file