Antonis Ryakiotakis
5e613198e5
This commit introduces a few ready made effects for the 3D viewport and OpenGL rendering. Included effects are Depth of Field, accessible from camera view and screen space ambient occlusion. Those effects can be turned on and tweaked from the shading panel in the 3D viewport. Off screen rendering will use the settings of the current camera. WIP documentation can be found here: http://wiki.blender.org/index.php/User:Psy-Fi/Framebuffer_Post-processing
69 lines
1.7 KiB
GLSL
69 lines
1.7 KiB
GLSL
uniform vec2 invrendertargetdim;
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//texture coordinates for framebuffer read
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varying vec4 uvcoordsvar;
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/* color texture coordinates, offset by a small amount */
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varying vec2 color_uv1;
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varying vec2 color_uv2;
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varying vec2 depth_uv1;
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varying vec2 depth_uv2;
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varying vec2 depth_uv3;
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varying vec2 depth_uv4;
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//very simple shader for gull screen FX, just pass values on
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void vert_generic()
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{
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uvcoordsvar = gl_MultiTexCoord0;
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gl_Position = gl_Vertex;
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}
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void vert_dof_first_pass()
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{
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/* we offset the texture coordinates by 1.5 pixel,
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* then we reuse that to sample the surrounding pixels */
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color_uv1 = gl_MultiTexCoord0.xy + vec2(-1.5, -1.5) * invrendertargetdim;
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color_uv2 = gl_MultiTexCoord0.xy + vec2(0.5, -1.5) * invrendertargetdim;
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depth_uv1 = gl_MultiTexCoord0.xy + vec2(-1.5, -1.5) * invrendertargetdim;
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depth_uv2 = gl_MultiTexCoord0.xy + vec2(-0.5, -1.5) * invrendertargetdim;
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depth_uv3 = gl_MultiTexCoord0.xy + vec2(0.5, -1.5) * invrendertargetdim;
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depth_uv4 = gl_MultiTexCoord0.xy + vec2(1.5, -1.5) * invrendertargetdim;
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gl_Position = gl_Vertex;
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}
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void vert_dof_fourth_pass()
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{
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vec4 halfpixel = vec4(-0.5, 0.5, -0.5, 0.5);
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uvcoordsvar = gl_MultiTexCoord0.xxyy + halfpixel * vec4(invrendertargetdim.x,
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invrendertargetdim.x, invrendertargetdim.y, invrendertargetdim.y);
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gl_Position = gl_Vertex;
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}
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void vert_dof_fifth_pass()
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{
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vec4 halfpixel = vec4(-0.5, 0.5, -0.5, 0.5);
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color_uv1 = vec2(0.5, 1.5) * invrendertargetdim;
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uvcoordsvar = gl_MultiTexCoord0;
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gl_Position = gl_Vertex;
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}
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void main()
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{
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#ifdef FIRST_PASS
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vert_dof_first_pass();
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#elif defined(FOURTH_PASS)
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vert_dof_fourth_pass();
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#elif defined(FIFTH_PASS)
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vert_dof_fifth_pass();
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#else
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vert_generic();
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#endif
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}
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