Index: conformance/ogles/GL/atan/atan_vec3_vert_xvary_ref.vert |
=================================================================== |
--- conformance/ogles/GL/atan/atan_vec3_vert_xvary_ref.vert (revision 0) |
+++ conformance/ogles/GL/atan/atan_vec3_vert_xvary_ref.vert (working copy) |
@@ -0,0 +1,178 @@ |
+ |
+/* |
+** Copyright (c) 2012 The Khronos Group Inc. |
+** |
+** Permission is hereby granted, free of charge, to any person obtaining a |
+** copy of this software and/or associated documentation files (the |
+** "Materials"), to deal in the Materials without restriction, including |
+** without limitation the rights to use, copy, modify, merge, publish, |
+** distribute, sublicense, and/or sell copies of the Materials, and to |
+** permit persons to whom the Materials are furnished to do so, subject to |
+** the following conditions: |
+** |
+** The above copyright notice and this permission notice shall be included |
+** in all copies or substantial portions of the Materials. |
+** |
+** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
+** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
+** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
+** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
+** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
+** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
+** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS. |
+*/ |
+ |
+ |
+attribute vec4 gtf_Vertex; |
+attribute vec4 gtf_Color; |
+uniform mat4 gtf_ModelViewProjectionMatrix; |
+varying vec4 color; |
+ |
+void main (void) |
+{ |
+ const float M_PI = 3.14159265358979323846; |
+ vec3 c = 4.0 * 2.0 * (gtf_Color.rgb - 0.5); |
+ vec3 atan_c = vec3(0.0); |
+ vec3 scale = vec3(1.0); |
+ vec3 sign = vec3(1.0); |
+ vec4 result = vec4(0.0, 0.0, 0.0, 1.0); |
+ |
+ if(c[0] < 0.0) |
+ { |
+ sign[0] = -1.0; |
+ c[0] *= -1.0; |
+ } |
+ |
+ if(c[0] <= 1.0) |
+ { |
+ // Taylors series expansion for atan |
+ atan_c[0] += scale[0] * pow(c[0], float(1)) / float(1); |
+ scale[0] *= -1.0; |
+ atan_c[0] += scale[0] * pow(c[0], float(3)) / float(3); |
+ scale[0] *= -1.0; |
+ atan_c[0] += scale[0] * pow(c[0], float(5)) / float(5); |
+ scale[0] *= -1.0; |
+ atan_c[0] += scale[0] * pow(c[0], float(7)) / float(7); |
+ scale[0] *= -1.0; |
+ atan_c[0] += scale[0] * pow(c[0], float(9)) / float(9); |
+ scale[0] *= -1.0; |
+ atan_c[0] += scale[0] * pow(c[0], float(11)) / float(11); |
+ scale[0] *= -1.0; |
+ |
+ result[0] = sign[0] * atan_c[0] / M_PI + 0.5; |
+ } |
+ else |
+ { |
+ c[0] = 1.0 / c[0]; |
+ |
+ // Taylors series expansion for atan |
+ atan_c[0] += scale[0] * pow(c[0], float(1)) / float(1); |
+ scale[0] *= -1.0; |
+ atan_c[0] += scale[0] * pow(c[0], float(3)) / float(3); |
+ scale[0] *= -1.0; |
+ atan_c[0] += scale[0] * pow(c[0], float(5)) / float(5); |
+ scale[0] *= -1.0; |
+ atan_c[0] += scale[0] * pow(c[0], float(7)) / float(7); |
+ scale[0] *= -1.0; |
+ atan_c[0] += scale[0] * pow(c[0], float(9)) / float(9); |
+ scale[0] *= -1.0; |
+ atan_c[0] += scale[0] * pow(c[0], float(11)) / float(11); |
+ scale[0] *= -1.0; |
+ |
+ result[0] = sign[0] * (M_PI / 2.0 - atan_c[0]) / M_PI + 0.5; |
+ } |
+ |
+ |
+ if(c[1] < 0.0) |
+ { |
+ sign[1] = -1.0; |
+ c[1] *= -1.0; |
+ } |
+ |
+ if(c[1] <= 1.0) |
+ { |
+ // Taylors series expansion for atan |
+ atan_c[1] += scale[1] * pow(c[1], float(1)) / float(1); |
+ scale[1] *= -1.0; |
+ atan_c[1] += scale[1] * pow(c[1], float(3)) / float(3); |
+ scale[1] *= -1.0; |
+ atan_c[1] += scale[1] * pow(c[1], float(5)) / float(5); |
+ scale[1] *= -1.0; |
+ atan_c[1] += scale[1] * pow(c[1], float(7)) / float(7); |
+ scale[1] *= -1.0; |
+ atan_c[1] += scale[1] * pow(c[1], float(9)) / float(9); |
+ scale[1] *= -1.0; |
+ atan_c[1] += scale[1] * pow(c[1], float(11)) / float(11); |
+ scale[1] *= -1.0; |
+ |
+ result[1] = sign[1] * atan_c[1] / M_PI + 0.5; |
+ } |
+ else |
+ { |
+ c[1] = 1.0 / c[1]; |
+ |
+ // Taylors series expansion for atan |
+ atan_c[1] += scale[1] * pow(c[1], float(1)) / float(1); |
+ scale[1] *= -1.0; |
+ atan_c[1] += scale[1] * pow(c[1], float(3)) / float(3); |
+ scale[1] *= -1.0; |
+ atan_c[1] += scale[1] * pow(c[1], float(5)) / float(5); |
+ scale[1] *= -1.0; |
+ atan_c[1] += scale[1] * pow(c[1], float(7)) / float(7); |
+ scale[1] *= -1.0; |
+ atan_c[1] += scale[1] * pow(c[1], float(9)) / float(9); |
+ scale[1] *= -1.0; |
+ atan_c[1] += scale[1] * pow(c[1], float(11)) / float(11); |
+ scale[1] *= -1.0; |
+ |
+ result[1] = sign[1] * (M_PI / 2.0 - atan_c[1]) / M_PI + 0.5; |
+ } |
+ |
+ if(c[2] < 0.0) |
+ { |
+ sign[2] = -1.0; |
+ c[2] *= -1.0; |
+ } |
+ |
+ if(c[2] <= 1.0) |
+ { |
+ // Taylors series expansion for atan |
+ atan_c[2] += scale[2] * pow(c[2], float(1)) / float(1); |
+ scale[2] *= -1.0; |
+ atan_c[2] += scale[2] * pow(c[2], float(3)) / float(3); |
+ scale[2] *= -1.0; |
+ atan_c[2] += scale[2] * pow(c[2], float(5)) / float(5); |
+ scale[2] *= -1.0; |
+ atan_c[2] += scale[2] * pow(c[2], float(7)) / float(7); |
+ scale[2] *= -1.0; |
+ atan_c[2] += scale[2] * pow(c[2], float(9)) / float(9); |
+ scale[2] *= -1.0; |
+ atan_c[2] += scale[2] * pow(c[2], float(11)) / float(11); |
+ scale[2] *= -1.0; |
+ |
+ result[2] = sign[2] * atan_c[2] / M_PI + 0.5; |
+ } |
+ else |
+ { |
+ c[2] = 1.0 / c[2]; |
+ |
+ // Taylors series expansion for atan |
+ atan_c[2] += scale[2] * pow(c[2], float(1)) / float(1); |
+ scale[2] *= -1.0; |
+ atan_c[2] += scale[2] * pow(c[2], float(3)) / float(3); |
+ scale[2] *= -1.0; |
+ atan_c[2] += scale[2] * pow(c[2], float(5)) / float(5); |
+ scale[2] *= -1.0; |
+ atan_c[2] += scale[2] * pow(c[2], float(7)) / float(7); |
+ scale[2] *= -1.0; |
+ atan_c[2] += scale[2] * pow(c[2], float(9)) / float(9); |
+ scale[2] *= -1.0; |
+ atan_c[2] += scale[2] * pow(c[2], float(11)) / float(11); |
+ scale[2] *= -1.0; |
+ |
+ result[2] = sign[2] * (M_PI / 2.0 - atan_c[2]) / M_PI + 0.5; |
+ } |
+ |
+ color = result; |
+ gl_Position = gtf_ModelViewProjectionMatrix * gtf_Vertex; |
+} |