#
source:
src/materials/_normalisationCubemap.pym
@
1240:1250eb599e01

Revision 1240:1250eb599e01, 4.8 KB checked in by Arc Riley <arcriley@…>, 7 years ago (diff) |
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1 | cimport stdlib |

2 | |

3 | cdef class NormalisationCubeMap(Texture): |

4 | def __cinit__(self, *args, **keywords) : |

5 | cdef int i, j |

6 | cdef float _length |

7 | cdef float _vector[3] |

8 | cdef unsigned char* _ptr |

9 | |

10 | self._resize(1, 3, 32, 32, 6) |

11 | _ptr = self._texels |

12 | |

13 | # +X |

14 | for j from 0 < j <= 32: |

15 | for i from 0 < i <= 32: |

16 | _vector[0] = 16.0 |

17 | _vector[1] = -(j + 0.5 - 16.0) |

18 | _vector[2] = -(i + 0.5 - 16.0) |

19 | |

20 | _length = stdlib.sqrtf( _vector[0] * _vector[0] + |

21 | _vector[1] * _vector[1] + |

22 | _vector[2] * _vector[2] ) |

23 | |

24 | _vector[0] = 0.5 * (_vector[0] / _length) + 0.5 |

25 | _vector[1] = 0.5 * (_vector[1] / _length) + 0.5 |

26 | _vector[2] = 0.5 * (_vector[2] / _length) + 0.5 |

27 | |

28 | _ptr[0] = <unsigned char> (_vector[0] * 255) |

29 | _ptr[1] = <unsigned char> (_vector[1] * 255) |

30 | _ptr[2] = <unsigned char> (_vector[2] * 255) |

31 | _ptr = _ptr + 3 |

32 | |

33 | |

34 | #-X |

35 | for j from 0 < j <= 32: |

36 | for i from 0 < i <= 32: |

37 | _vector[0] = -16.0 |

38 | _vector[1] = -(j + 0.5 - 16.0) |

39 | _vector[2] = (i + 0.5 - 16.0) |

40 | |

41 | _length = stdlib.sqrtf( _vector[0] * _vector[0] + |

42 | _vector[1] * _vector[1] + |

43 | _vector[2] * _vector[2] ) |

44 | |

45 | _vector[0] = 0.5 * (_vector[0] / _length) + 0.5 |

46 | _vector[1] = 0.5 * (_vector[1] / _length) + 0.5 |

47 | _vector[2] = 0.5 * (_vector[2] / _length) + 0.5 |

48 | |

49 | _ptr[0] = <unsigned char> (_vector[0] * 255) |

50 | _ptr[1] = <unsigned char> (_vector[1] * 255) |

51 | _ptr[2] = <unsigned char> (_vector[2] * 255) |

52 | _ptr = _ptr + 3 |

53 | |

54 | #+Y |

55 | for j from 0 < j <= 32: |

56 | for i from 0 < i <= 32: |

57 | _vector[0] = (i + 0.5 - 16.0) |

58 | _vector[1] = 16.0 |

59 | _vector[2] = (j + 0.5 - 16.0) |

60 | |

61 | _length = stdlib.sqrtf( _vector[0] * _vector[0] + |

62 | _vector[1] * _vector[1] + |

63 | _vector[2] * _vector[2] ) |

64 | |

65 | _vector[0] = 0.5 * (_vector[0] / _length) + 0.5 |

66 | _vector[1] = 0.5 * (_vector[1] / _length) + 0.5 |

67 | _vector[2] = 0.5 * (_vector[2] / _length) + 0.5 |

68 | |

69 | _ptr[0] = <unsigned char> (_vector[0] * 255) |

70 | _ptr[1] = <unsigned char> (_vector[1] * 255) |

71 | _ptr[2] = <unsigned char> (_vector[2] * 255) |

72 | _ptr = _ptr + 3 |

73 | |

74 | |

75 | #-Y |

76 | for j from 0 < j <= 32: |

77 | for i from 0 < i <= 32: |

78 | _vector[0] = (i + 0.5 - 16.0) |

79 | _vector[1] = -16.0 |

80 | _vector[2] = -(j + 0.5 - 16.0) |

81 | |

82 | _length = stdlib.sqrtf( _vector[0] * _vector[0] + |

83 | _vector[1] * _vector[1] + |

84 | _vector[2] * _vector[2] ) |

85 | |

86 | _vector[0] = 0.5 * (_vector[0] / _length) + 0.5 |

87 | _vector[1] = 0.5 * (_vector[1] / _length) + 0.5 |

88 | _vector[2] = 0.5 * (_vector[2] / _length) + 0.5 |

89 | |

90 | _ptr[0] = <unsigned char> (_vector[0] * 255) |

91 | _ptr[1] = <unsigned char> (_vector[1] * 255) |

92 | _ptr[2] = <unsigned char> (_vector[2] * 255) |

93 | _ptr = _ptr + 3 |

94 | |

95 | |

96 | #+Z |

97 | for j from 0 < j <= 32: |

98 | for i from 0 < i <= 32: |

99 | _vector[0] = (i + 0.5 - 16.0) |

100 | _vector[1] = -(j + 0.5 - 16.0) |

101 | _vector[2] = 16.0 |

102 | |

103 | _length = stdlib.sqrtf( _vector[0] * _vector[0] + |

104 | _vector[1] * _vector[1] + |

105 | _vector[2] * _vector[2] ) |

106 | |

107 | _vector[0] = 0.5 * (_vector[0] / _length) + 0.5 |

108 | _vector[1] = 0.5 * (_vector[1] / _length) + 0.5 |

109 | _vector[2] = 0.5 * (_vector[2] / _length) + 0.5 |

110 | |

111 | _ptr[0] = <unsigned char> (_vector[0] * 255) |

112 | _ptr[1] = <unsigned char> (_vector[1] * 255) |

113 | _ptr[2] = <unsigned char> (_vector[2] * 255) |

114 | _ptr = _ptr + 3 |

115 | |

116 | |

117 | #-Z |

118 | for j from 0 < j <= 32: |

119 | for i from 0 < i <= 32: |

120 | _vector[0] = -(i + 0.5 - 16.0) |

121 | _vector[1] = -(j + 0.5 - 16.0) |

122 | _vector[2] = -16.0 |

123 | |

124 | _length = stdlib.sqrtf( _vector[0] * _vector[0] + |

125 | _vector[1] * _vector[1] + |

126 | _vector[2] * _vector[2] ) |

127 | |

128 | _vector[0] = 0.5 * (_vector[0] / _length) + 0.5 |

129 | _vector[1] = 0.5 * (_vector[1] / _length) + 0.5 |

130 | _vector[2] = 0.5 * (_vector[2] / _length) + 0.5 |

131 | |

132 | _ptr[0] = <unsigned char> (_vector[0] * 255) |

133 | _ptr[1] = <unsigned char> (_vector[1] * 255) |

134 | _ptr[2] = <unsigned char> (_vector[2] * 255) |

135 | _ptr = _ptr + 3 |

136 | |

137 | ''' |

138 | gl.glTexParameteri(self._target, gl.GL_TEXTURE_MAG_FILTER, gl.GL_LINEAR) |

139 | gl.glTexParameteri(self._target, gl.GL_TEXTURE_MIN_FILTER, gl.GL_LINEAR) |

140 | gl.glTexParameteri(self._target, gl.GL_TEXTURE_WRAP_S , gl.GL_CLAMP_TO_EDGE) |

141 | gl.glTexParameteri(self._target, gl.GL_TEXTURE_WRAP_T , gl.GL_CLAMP_TO_EDGE) |

142 | gl.glTexParameteri(self._target, gl.GL_TEXTURE_WRAP_R , gl.GL_CLAMP_TO_EDGE) |

143 | ''' |

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