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| 1 // ArgGenerators contains argument generators for WebGL functions. |
| 2 // The argument generators are used for running random tests against the WebGL |
| 3 // functions. |
| 4 // |
| 5 // ArgGenerators is an object consisting of functionName : argGen -properties. |
| 6 // |
| 7 // functionName is a WebGL context function name and the argGen is an argument |
| 8 // generator object that encapsulates the requirements to run |
| 9 // randomly generated tests on the WebGL function. |
| 10 // |
| 11 // An argGen object has the following methods: |
| 12 // - setup -- set up state for testing the GL function, returns values |
| 13 // that need cleanup in teardown. Run once before entering a |
| 14 // test loop. |
| 15 // - teardown -- do cleanup on setup's return values after testing is complete |
| 16 // - generate -- generate a valid set of random arguments for the GL function |
| 17 // - returnValueCleanup -- do cleanup on value returned by the tested GL funct
ion |
| 18 // - cleanup -- do cleanup on generated arguments from generate |
| 19 // - checkArgValidity -- check if passed args are valid. Has a call signature |
| 20 // that matches generate's return value. Returns true |
| 21 // if args are valid, false if not. |
| 22 // |
| 23 // Example test loop that demonstrates how the function args and return |
| 24 // values flow together: |
| 25 // |
| 26 // var setupArgs = argGen.setup(); |
| 27 // for (var i=0; i<numberOfTests; i++) { |
| 28 // var generatedArgs = argGen.generate.apply(argGen, setupArgs); |
| 29 // var validArgs = argGen.checkArgValidity.apply(argGen, generatedArgs); |
| 30 // var rv = call the GL function with generatedArgs; |
| 31 // argGen.returnValueCleanup(rv); |
| 32 // argGen.cleanup.apply(argGen, generatedArgs); |
| 33 // } |
| 34 // argGen.teardown.apply(argGen, setupArgs); |
| 35 // |
| 36 ArgGenerators = { |
| 37 |
| 38 // GL functions in alphabetical order |
| 39 |
| 40 // L |
| 41 |
| 42 lineWidth : { |
| 43 generate : function() { return [randomLineWidth()]; }, |
| 44 teardown : function() { GL.lineWidth(1); } |
| 45 }, |
| 46 linkProgram : {}, // FIXME |
| 47 |
| 48 // P |
| 49 pixelStorei : { |
| 50 generate : function() { |
| 51 return [pixelStoreiPname.random(), pixelStoreiParam.random()]; |
| 52 }, |
| 53 checkArgValidity : function(pname, param) { |
| 54 return pixelStoreiPname.has(pname) && pixelStoreiParam.has(param); |
| 55 }, |
| 56 teardown : function() { |
| 57 GL.pixelStorei(GL.PACK_ALIGNMENT, 4); |
| 58 GL.pixelStorei(GL.UNPACK_ALIGNMENT, 4); |
| 59 } |
| 60 }, |
| 61 polygonOffset : { |
| 62 generate : function() { return [randomFloat(), randomFloat()]; }, |
| 63 teardown : function() { GL.polygonOffset(0,0); } |
| 64 }, |
| 65 |
| 66 // R |
| 67 |
| 68 readPixels : {}, // FIXME |
| 69 renderbufferStorage : {}, // FIXME |
| 70 |
| 71 // S-1 |
| 72 |
| 73 sampleCoverage : { |
| 74 generate : function() { return [randomFloatFromRange(0,1), randomBool()] }, |
| 75 teardown : function() { GL.sampleCoverage(1, false); } |
| 76 }, |
| 77 scissor : { |
| 78 generate : function() { |
| 79 return [randomInt(3000)-1500, randomInt(3000)-1500, randomIntFromRange(0,3
000), randomIntFromRange(0,3000)]; |
| 80 }, |
| 81 checkArgValidity : function(x,y,w,h) { |
| 82 return castToInt(w) >= 0 && castToInt(h) >= 0; |
| 83 }, |
| 84 teardown : function() { |
| 85 GL.scissor(0,0,GL.canvas.width, GL.canvas.height); |
| 86 } |
| 87 }, |
| 88 shaderSource : {}, // FIXME |
| 89 stencilFunc : { |
| 90 generate : function(){ |
| 91 return [stencilFuncFunc.random(), randomInt(MaxStencilValue), randomInt(0x
ffffffff)]; |
| 92 }, |
| 93 checkArgValidity : function(func, ref, mask) { |
| 94 return stencilFuncFunc.has(func) && castToInt(ref) >= 0 && castToInt(ref)
< MaxStencilValue; |
| 95 }, |
| 96 teardown : function() { |
| 97 GL.stencilFunc(GL.ALWAYS, 0, 0xffffffff); |
| 98 } |
| 99 }, |
| 100 stencilFuncSeparate : { |
| 101 generate : function(){ |
| 102 return [cullFace.random(), stencilFuncFunc.random(), randomInt(MaxStencilV
alue), randomInt(0xffffffff)]; |
| 103 }, |
| 104 checkArgValidity : function(face, func, ref, mask) { |
| 105 return cullFace.has(face) && stencilFuncFunc.has(func) && castToInt(ref) >
= 0 && castToInt(ref) < MaxStencilValue; |
| 106 }, |
| 107 teardown : function() { |
| 108 GL.stencilFunc(GL.ALWAYS, 0, 0xffffffff); |
| 109 } |
| 110 }, |
| 111 stencilMask : { |
| 112 generate : function() { return [randomInt(0xffffffff)]; }, |
| 113 teardown : function() { GL.stencilMask(0xffffffff); } |
| 114 } |
| 115 |
| 116 }; |
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