diff options
Diffstat (limited to 'dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/functions/vec4_empty_inout_vec4_empty_frag.frag')
-rw-r--r-- | dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/functions/vec4_empty_inout_vec4_empty_frag.frag | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/functions/vec4_empty_inout_vec4_empty_frag.frag b/dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/functions/vec4_empty_inout_vec4_empty_frag.frag new file mode 100644 index 0000000000..1d144cac57 --- /dev/null +++ b/dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/functions/vec4_empty_inout_vec4_empty_frag.frag @@ -0,0 +1,74 @@ + +/* +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; + +// Function declaration. +vec4 function(inout vec4 par); +bool is_all(const in vec4 par, const in float value); +void set_all(out vec4 par, const in float value); + +void main (void) +{ + vec4 par = vec4(1.0, 1.0, 1.0, 1.0); + vec4 ret = vec4(0.0, 0.0, 0.0, 0.0); + + float gray = 0.0; + + ret = function(par); + + // The parameter should be changed by the function and the function should return 1.0. + if(is_all(par, 0.0) && is_all(ret, 1.0)) + { + gray = 1.0; + } + + gl_FragColor = vec4(gray, gray, gray, 1.0); +} + +// Function definition. +vec4 function(inout vec4 par) +{ + // Return the value of the parameter. + if(is_all(par, 1.0)) + { + // Test parameter qualifier (default is "in"). + set_all(par, 0.0); + + return vec4(1.0, 1.0, 1.0, 1.0); + } + else + return vec4(0.0, 0.0, 0.0, 0.0); +} + +bool is_all(const in vec4 par, const in float value) +{ + bool ret = true; + + if(par[0] != value) + ret = false; + if(par[1] != value) + ret = false; + if(par[2] != value) + ret = false; + if(par[3] != value) + ret = false; + + return ret; +} + +void set_all(out vec4 par, const in float value) +{ + par[0] = value; + par[1] = value; + par[2] = value; + par[3] = value; +} |