本文整理汇总了C++中GrGLSLFPFragmentBuilder::distanceVectorName方法的典型用法代码示例。如果您正苦于以下问题：C++ GrGLSLFPFragmentBuilder::distanceVectorName方法的具体用法？C++ GrGLSLFPFragmentBuilder::distanceVectorName怎么用？C++ GrGLSLFPFragmentBuilder::distanceVectorName使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类GrGLSLFPFragmentBuilder的用法示例。
在下文中一共展示了GrGLSLFPFragmentBuilder::distanceVectorName方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: emitCode
void emitCode(EmitArgs& args) override {
GrBlurredEdgeFP::Mode mode = args.fFp.cast<GrBlurredEdgeFP>().mode();
GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;
fragBuilder->codeAppendf("vec4 color = %s;", args.fInputColor);
if (!args.fGpImplementsDistanceVector) {
fragBuilder->codeAppendf("// assuming interpolant is set in vertex colors\n");
fragBuilder->codeAppendf("float factor = 1.0 - color.b;");
} else {
fragBuilder->codeAppendf("// using distance to edge to compute interpolant\n");
fragBuilder->codeAppend("float radius = color.r*256.0*64.0 + color.g*64.0;");
fragBuilder->codeAppend("float pad = color.b*64.0;");
fragBuilder->codeAppendf("float factor = 1.0 - clamp((%s.z - pad)/radius, 0.0, 1.0);",
fragBuilder->distanceVectorName());
}
switch (mode) {
case GrBlurredEdgeFP::kGaussian_Mode:
fragBuilder->codeAppend("factor = exp(-factor * factor * 4.0) - 0.018;");
break;
case GrBlurredEdgeFP::kSmoothstep_Mode:
fragBuilder->codeAppend("factor = smoothstep(factor, 0.0, 1.0);");
break;
}
if (!args.fGpImplementsDistanceVector) {
fragBuilder->codeAppendf("%s = vec4(factor*color.g);", args.fOutputColor);
} else {
fragBuilder->codeAppendf("%s = vec4(factor*color.a);", args.fOutputColor);
}
}