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Diffstat (limited to '')
| -rw-r--r-- | dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/tan/tan_float_vert_xvary_ref.vert | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/tan/tan_float_vert_xvary_ref.vert b/dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/tan/tan_float_vert_xvary_ref.vert new file mode 100644 index 0000000000..074502f61d --- /dev/null +++ b/dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/tan/tan_float_vert_xvary_ref.vert @@ -0,0 +1,25 @@ + +/* +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; + float c = 0.5 * M_PI * 2.0 * (gtf_Color.r - 0.5); + float o; + if(abs(c) < 0.5) // -45..45 + o = 0.5 * (sin(c) / cos(c)) + 0.5; + else // 45..90, -45..-90 + o = 0.5 * (cos(c) / sin(c)) + 0.5; + color = vec4(o, 0.0, 0.0, 1.0); + gl_Position = gtf_ModelViewProjectionMatrix * gtf_Vertex; +} |