OLD | NEW |
(Empty) | |
| 1 |
| 2 /* |
| 3 ** Copyright (c) 2012 The Khronos Group Inc. |
| 4 ** |
| 5 ** Permission is hereby granted, free of charge, to any person obtaining a |
| 6 ** copy of this software and/or associated documentation files (the |
| 7 ** "Materials"), to deal in the Materials without restriction, including |
| 8 ** without limitation the rights to use, copy, modify, merge, publish, |
| 9 ** distribute, sublicense, and/or sell copies of the Materials, and to |
| 10 ** permit persons to whom the Materials are furnished to do so, subject to |
| 11 ** the following conditions: |
| 12 ** |
| 13 ** The above copyright notice and this permission notice shall be included |
| 14 ** in all copies or substantial portions of the Materials. |
| 15 ** |
| 16 ** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 17 ** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 18 ** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| 19 ** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| 20 ** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| 21 ** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| 22 ** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS. |
| 23 */ |
| 24 |
| 25 |
| 26 #ifdef GL_ES |
| 27 precision mediump float; |
| 28 #endif |
| 29 varying vec4 color; |
| 30 |
| 31 const mat4 mat_ones = mat4(1.0, 1.0, 1.0, 1.0, |
| 32 1.0, 1.0, 1.0, 1.0, |
| 33 1.0, 1.0, 1.0, 1.0, |
| 34 1.0, 1.0, 1.0, 1.0); |
| 35 const mat4 mat_zeros = mat4(0.0, 0.0, 0.0, 0.0, |
| 36 0.0, 0.0, 0.0, 0.0, |
| 37 0.0, 0.0, 0.0, 0.0, |
| 38 0.0, 0.0, 0.0, 0.0); |
| 39 |
| 40 // Function declarations. |
| 41 mat4 function(in mat4 par[2]); |
| 42 bool is_all(const in mat4 par, const in float value); |
| 43 bool is_all(const in mat4 array[2], const in mat4 value); |
| 44 void set_all(out mat4 array[2], const in mat4 value); |
| 45 |
| 46 void main (void) |
| 47 { |
| 48 mat4 par[2]; |
| 49 mat4 ret = mat_zeros; |
| 50 |
| 51 float gray = 0.0; |
| 52 |
| 53 // Initialize the entire array to 1.0. |
| 54 set_all(par, mat_ones); |
| 55 |
| 56 ret = function(par); |
| 57 |
| 58 // The parameter should remain unchanged by the function and the functio
n should return 1.0. |
| 59 if(is_all(par, mat_ones) && is_all(ret, 1.0)) |
| 60 { |
| 61 gray = 1.0; |
| 62 } |
| 63 |
| 64 gl_FragColor = vec4(gray, gray, gray, 1.0); |
| 65 } |
| 66 |
| 67 // Function definitions. |
| 68 mat4 function(in mat4 par[2]) |
| 69 { |
| 70 // Return the value of the array. |
| 71 if(is_all(par, mat_ones)) |
| 72 { |
| 73 // Test parameter qualifier (default is "in"). |
| 74 set_all(par, mat_zeros); |
| 75 |
| 76 return mat_ones; |
| 77 } |
| 78 else |
| 79 return mat_zeros; |
| 80 } |
| 81 |
| 82 bool is_all(const in mat4 par, const in float value) |
| 83 { |
| 84 bool ret = true; |
| 85 |
| 86 if(par[0][0] != value) |
| 87 ret = false; |
| 88 if(par[0][1] != value) |
| 89 ret = false; |
| 90 if(par[0][2] != value) |
| 91 ret = false; |
| 92 if(par[0][3] != value) |
| 93 ret = false; |
| 94 |
| 95 if(par[1][0] != value) |
| 96 ret = false; |
| 97 if(par[1][1] != value) |
| 98 ret = false; |
| 99 if(par[1][2] != value) |
| 100 ret = false; |
| 101 if(par[1][3] != value) |
| 102 ret = false; |
| 103 |
| 104 if(par[2][0] != value) |
| 105 ret = false; |
| 106 if(par[2][1] != value) |
| 107 ret = false; |
| 108 if(par[2][2] != value) |
| 109 ret = false; |
| 110 if(par[2][3] != value) |
| 111 ret = false; |
| 112 |
| 113 if(par[3][0] != value) |
| 114 ret = false; |
| 115 if(par[3][1] != value) |
| 116 ret = false; |
| 117 if(par[3][2] != value) |
| 118 ret = false; |
| 119 if(par[3][3] != value) |
| 120 ret = false; |
| 121 |
| 122 return ret; |
| 123 } |
| 124 |
| 125 bool is_all(const in mat4 array[2], const in mat4 value) |
| 126 { |
| 127 bool ret = true; |
| 128 |
| 129 if(array[0] != value) |
| 130 ret = false; |
| 131 if(array[1] != value) |
| 132 ret = false; |
| 133 |
| 134 return ret; |
| 135 } |
| 136 |
| 137 void set_all(out mat4 array[2], const in mat4 value) |
| 138 { |
| 139 array[0] = value; |
| 140 array[1] = value; |
| 141 } |
OLD | NEW |