diff options
Diffstat (limited to '')
| -rw-r--r-- | dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/tan/tan_vec2_vert_xvary_ref.vert | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/tan/tan_vec2_vert_xvary_ref.vert b/dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/tan/tan_vec2_vert_xvary_ref.vert new file mode 100644 index 0000000000..01b0079917 --- /dev/null +++ b/dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/tan/tan_vec2_vert_xvary_ref.vert @@ -0,0 +1,31 @@ + +/* +Copyright (c) 2019 The Khronos Group Inc. +Use of this source code is governed by an MIT-style license that can be +found in the LICENSE.txt file. +*/ + + +attribute vec4 gtf_Color; +attribute vec4 gtf_Vertex; +uniform mat4 gtf_ModelViewProjectionMatrix; +varying vec4 color; + +void main (void) +{ + const float M_PI = 3.14159265358979323846; + vec2 c = 0.5 * M_PI * 2.0 * (gtf_Color.rg - 0.5); + vec2 o; + if(abs(c.r) < 0.5) // -45..45 + o.r = 0.5 * (sin(c.r) / cos(c.r)) + 0.5; + else // 45..90, -45..-90 + o.r = 0.5 * (cos(c.r) / sin(c.r)) + 0.5; + + if(abs(c.g) < 0.5) // -45..45 + o.g = 0.5 * (sin(c.g) / cos(c.g)) + 0.5; + else // 45..90, -45..-90 + o.g = 0.5 * (cos(c.g) / sin(c.g)) + 0.5; + + color = vec4(o, 0.0, 1.0); + gl_Position = gtf_ModelViewProjectionMatrix * gtf_Vertex; +} |