[25] | 1 | /****************************************************************************** |
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| 2 | Copyright (c) W.J. van der Laan |
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| 3 | |
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| 4 | Permission is hereby granted, free of charge, to any person obtaining a copy of |
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| 5 | this software and associated documentation files (the "Software"), to deal in |
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| 6 | the Software without restriction, including without limitation the rights to use, |
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| 7 | copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the |
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| 8 | Software, and to permit persons to whom the Software is furnished to do so, subject |
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| 9 | to the following conditions: |
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| 10 | |
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| 11 | The above copyright notice and this permission notice shall be included in all copies |
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| 12 | or substantial portions of the Software. |
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| 13 | |
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| 14 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, |
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| 15 | INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A |
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| 16 | PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT |
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| 17 | HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION |
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| 18 | OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,OUT OF OR IN CONNECTION WITH THE |
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| 19 | SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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| 20 | ******************************************************************************/ |
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| 21 | /** Deferred shading framework |
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| 22 | // W.J. :wumpus: van der Laan 2005 // |
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| 23 | |
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| 24 | Post shader: Generic fullscreen quad |
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| 25 | */ |
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| 26 | varying vec2 texCoord; |
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| 27 | varying vec3 projCoord; |
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| 28 | |
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| 29 | uniform mat4 invProj; |
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| 30 | |
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| 31 | void main() |
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| 32 | { |
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| 33 | vec2 inPos = sign(gl_Vertex.xy); |
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| 34 | gl_Position = vec4(inPos.xy, 0.0, 1.0); |
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| 35 | |
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| 36 | texCoord = (vec2(inPos.x, -inPos.y) + 1.0)/2.0; |
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| 37 | |
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| 38 | // Projection coordinates |
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| 39 | // Inverted projection matrix |
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| 40 | // These interpolate over the frustrum plane for w=1 |
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| 41 | projCoord = vec3(invProj*vec4(inPos.x, inPos.y, 0, 1)); |
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| 42 | } |
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