diff options
Diffstat (limited to 'dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/faceforward/faceforward_float_frag_nvaryiconst_ref.frag')
-rw-r--r-- | dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/faceforward/faceforward_float_frag_nvaryiconst_ref.frag | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/faceforward/faceforward_float_frag_nvaryiconst_ref.frag b/dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/faceforward/faceforward_float_frag_nvaryiconst_ref.frag new file mode 100644 index 0000000000..788d24b1e9 --- /dev/null +++ b/dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/faceforward/faceforward_float_frag_nvaryiconst_ref.frag @@ -0,0 +1,24 @@ + +/* +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. +*/ + + +#ifdef GL_ES +precision mediump float; +#endif +varying vec4 color; + +void main (void) +{ + const float M_PI = 3.14159265358979323846; + + // Both are unit vectors + float v1 = (color.g * 2.0) - 1.0; + float v2 = (color.b * 2.0) - 1.0; + + if(dot(v1, v2) >= 0.0) v1 *= -1.0; + gl_FragColor = vec4((v1 + 1.0) / 2.0, 0.0, 0.0, 1.0); +} |