C++ GrGLSLPPFragmentBuilder::declAppend方法代码示例

本文整理汇总了C++中GrGLSLPPFragmentBuilder::declAppend方法的典型用法代码示例。如果您正苦于以下问题：C++ GrGLSLPPFragmentBuilder::declAppend方法的具体用法？C++ GrGLSLPPFragmentBuilder::declAppend怎么用？C++ GrGLSLPPFragmentBuilder::declAppend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GrGLSLPPFragmentBuilder的用法示例。

在下文中一共展示了GrGLSLPPFragmentBuilder::declAppend方法的2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: onEmitCode

void GrGLCubicEffect::onEmitCode(EmitArgs& args, GrGPArgs* gpArgs) {
    GrGLSLVertexBuilder* vertBuilder = args.fVertBuilder;
    const GrCubicEffect& gp = args.fGP.cast<GrCubicEffect>();
    GrGLSLVaryingHandler* varyingHandler = args.fVaryingHandler;
    GrGLSLUniformHandler* uniformHandler = args.fUniformHandler;

    // emit attributes
    varyingHandler->emitAttributes(gp);

    GrGLSLVertToFrag v(kVec4f_GrSLType);
    varyingHandler->addVarying("CubicCoeffs", &v, kHigh_GrSLPrecision);
    vertBuilder->codeAppendf("%s = %s;", v.vsOut(), gp.inCubicCoeffs()->fName);

    GrGLSLPPFragmentBuilder* fragBuilder = args.fFragBuilder;
    // Setup pass through color
    if (!gp.colorIgnored()) {
        this->setupUniformColor(fragBuilder, uniformHandler, args.fOutputColor, &fColorUniform);
    }

    // Setup position
    this->setupPosition(vertBuilder,
                        uniformHandler,
                        gpArgs,
                        gp.inPosition()->fName,
                        gp.viewMatrix(),
                        &fViewMatrixUniform);

    // emit transforms with position
    this->emitTransforms(vertBuilder,
                         varyingHandler,
                         uniformHandler,
                         gpArgs->fPositionVar,
                         gp.inPosition()->fName,
                         args.fFPCoordTransformHandler);


    GrShaderVar edgeAlpha("edgeAlpha", kFloat_GrSLType, 0, kHigh_GrSLPrecision);
    GrShaderVar dklmdx("dklmdx", kVec3f_GrSLType, 0, kHigh_GrSLPrecision);
    GrShaderVar dklmdy("dklmdy", kVec3f_GrSLType, 0, kHigh_GrSLPrecision);
    GrShaderVar dfdx("dfdx", kFloat_GrSLType, 0, kHigh_GrSLPrecision);
    GrShaderVar dfdy("dfdy", kFloat_GrSLType, 0, kHigh_GrSLPrecision);
    GrShaderVar gF("gF", kVec2f_GrSLType, 0, kHigh_GrSLPrecision);
    GrShaderVar gFM("gFM", kFloat_GrSLType, 0, kHigh_GrSLPrecision);
    GrShaderVar func("func", kFloat_GrSLType, 0, kHigh_GrSLPrecision);

    fragBuilder->declAppend(edgeAlpha);
    fragBuilder->declAppend(dklmdx);
    fragBuilder->declAppend(dklmdy);
    fragBuilder->declAppend(dfdx);
    fragBuilder->declAppend(dfdy);
    fragBuilder->declAppend(gF);
    fragBuilder->declAppend(gFM);
    fragBuilder->declAppend(func);

    switch (fEdgeType) {
        case kHairlineAA_GrProcessorEdgeType: {
            fragBuilder->codeAppendf("%s = dFdx(%s.xyz);", dklmdx.c_str(), v.fsIn());
            fragBuilder->codeAppendf("%s = dFdy(%s.xyz);", dklmdy.c_str(), v.fsIn());
            fragBuilder->codeAppendf("%s = 3.0 * %s.x * %s.x * %s.x - %s.y * %s.z - %s.z * %s.y;",
                                     dfdx.c_str(), v.fsIn(), v.fsIn(), dklmdx.c_str(), v.fsIn(),
                                     dklmdx.c_str(), v.fsIn(), dklmdx.c_str());
            fragBuilder->codeAppendf("%s = 3.0 * %s.x * %s.x * %s.x - %s.y * %s.z - %s.z * %s.y;",
                                     dfdy.c_str(), v.fsIn(), v.fsIn(), dklmdy.c_str(), v.fsIn(),
                                     dklmdy.c_str(), v.fsIn(), dklmdy.c_str());
            fragBuilder->codeAppendf("%s = vec2(%s, %s);", gF.c_str(), dfdx.c_str(), dfdy.c_str());
            fragBuilder->codeAppendf("%s = sqrt(dot(%s, %s));",
                                     gFM.c_str(), gF.c_str(), gF.c_str());
            fragBuilder->codeAppendf("%s = %s.x * %s.x * %s.x - %s.y * %s.z;",
                                     func.c_str(), v.fsIn(), v.fsIn(),
                                     v.fsIn(), v.fsIn(), v.fsIn());
            fragBuilder->codeAppendf("%s = abs(%s);", func.c_str(), func.c_str());
            fragBuilder->codeAppendf("%s = %s / %s;",
                                     edgeAlpha.c_str(), func.c_str(), gFM.c_str());
            fragBuilder->codeAppendf("%s = max(1.0 - %s, 0.0);",
                                     edgeAlpha.c_str(), edgeAlpha.c_str());
            // Add line below for smooth cubic ramp
            // fragBuilder->codeAppendf("%s = %s * %s * (3.0 - 2.0 * %s);",
            //                        edgeAlpha.c_str(), edgeAlpha.c_str(), edgeAlpha.c_str(),
            //                        edgeAlpha.c_str());
            break;
        }
        case kFillAA_GrProcessorEdgeType: {
            fragBuilder->codeAppendf("%s = dFdx(%s.xyz);", dklmdx.c_str(), v.fsIn());
            fragBuilder->codeAppendf("%s = dFdy(%s.xyz);", dklmdy.c_str(), v.fsIn());
            fragBuilder->codeAppendf("%s ="
                                     "3.0 * %s.x * %s.x * %s.x - %s.y * %s.z - %s.z * %s.y;",
                                     dfdx.c_str(), v.fsIn(), v.fsIn(), dklmdx.c_str(), v.fsIn(),
                                     dklmdx.c_str(), v.fsIn(), dklmdx.c_str());
            fragBuilder->codeAppendf("%s = 3.0 * %s.x * %s.x * %s.x - %s.y * %s.z - %s.z * %s.y;",
                                     dfdy.c_str(), v.fsIn(), v.fsIn(), dklmdy.c_str(), v.fsIn(),
                                     dklmdy.c_str(), v.fsIn(), dklmdy.c_str());
            fragBuilder->codeAppendf("%s = vec2(%s, %s);", gF.c_str(), dfdx.c_str(), dfdy.c_str());
            fragBuilder->codeAppendf("%s = sqrt(dot(%s, %s));",
                                     gFM.c_str(), gF.c_str(), gF.c_str());
            fragBuilder->codeAppendf("%s = %s.x * %s.x * %s.x - %s.y * %s.z;",
                                     func.c_str(),
                                     v.fsIn(), v.fsIn(), v.fsIn(), v.fsIn(), v.fsIn());
            fragBuilder->codeAppendf("%s = %s / %s;",
                                     edgeAlpha.c_str(), func.c_str(), gFM.c_str());
            fragBuilder->codeAppendf("%s = clamp(0.5 - %s, 0.0, 1.0);",
//.........这里部分代码省略.........

开发者ID:Wafflespeanut，项目名称:gecko-dev，代码行数:101，代码来源:GrBezierEffect.cpp

示例2: onEmitCode

void GrGLCubicEffect::onEmitCode(EmitArgs& args, GrGPArgs* gpArgs) {
    GrGLSLVertexBuilder* vertBuilder = args.fVertBuilder;
    const GrCubicEffect& gp = args.fGP.cast<GrCubicEffect>();
    GrGLSLVaryingHandler* varyingHandler = args.fVaryingHandler;
    GrGLSLUniformHandler* uniformHandler = args.fUniformHandler;

    // emit attributes
    varyingHandler->emitAttributes(gp);

    GrGLSLPPFragmentBuilder* fragBuilder = args.fFragBuilder;
    // Setup pass through color
    if (!gp.colorIgnored()) {
        this->setupUniformColor(fragBuilder, uniformHandler, args.fOutputColor, &fColorUniform);
    }

    // Setup position
    this->setupPosition(vertBuilder,
                        uniformHandler,
                        gpArgs,
                        gp.inPosition()->fName,
                        gp.viewMatrix(),
                        &fViewMatrixUniform);

    // Setup KLM
    const char* devkLMMatrixName;
    fDevKLMUniform = uniformHandler->addUniform(kVertex_GrShaderFlag, kMat33f_GrSLType,
                                                kHigh_GrSLPrecision, "KLM", &devkLMMatrixName);
    GrGLSLVertToFrag v(kVec3f_GrSLType);
    varyingHandler->addVarying("CubicCoeffs", &v, kHigh_GrSLPrecision);
    vertBuilder->codeAppendf("%s = %s * vec3(%s, 1);",
                             v.vsOut(), devkLMMatrixName, gpArgs->fPositionVar.c_str());


    GrGLSLVertToFrag gradCoeffs(kVec4f_GrSLType);
    if (kFillAA_GrProcessorEdgeType == fEdgeType || kHairlineAA_GrProcessorEdgeType == fEdgeType) {
        varyingHandler->addVarying("GradCoeffs", &gradCoeffs, kHigh_GrSLPrecision);
        vertBuilder->codeAppendf("highp float k = %s[0], l = %s[1], m = %s[2];",
                                 v.vsOut(), v.vsOut(), v.vsOut());
        vertBuilder->codeAppendf("highp vec2 gk = vec2(%s[0][0], %s[1][0]), "
                                            "gl = vec2(%s[0][1], %s[1][1]), "
                                            "gm = vec2(%s[0][2], %s[1][2]);",
                                 devkLMMatrixName, devkLMMatrixName, devkLMMatrixName,
                                 devkLMMatrixName, devkLMMatrixName, devkLMMatrixName);
        vertBuilder->codeAppendf("%s = vec4(3 * k * gk, -m * gl - l * gm);",
                                 gradCoeffs.vsOut());
    }

    // emit transforms with position
    this->emitTransforms(vertBuilder,
                         varyingHandler,
                         uniformHandler,
                         gpArgs->fPositionVar,
                         gp.inPosition()->fName,
                         args.fFPCoordTransformHandler);


    GrShaderVar edgeAlpha("edgeAlpha", kFloat_GrSLType, 0, kHigh_GrSLPrecision);
    GrShaderVar gF("gF", kVec2f_GrSLType, 0, kHigh_GrSLPrecision);
    GrShaderVar func("func", kFloat_GrSLType, 0, kHigh_GrSLPrecision);

    fragBuilder->declAppend(edgeAlpha);
    fragBuilder->declAppend(gF);
    fragBuilder->declAppend(func);

    switch (fEdgeType) {
        case kHairlineAA_GrProcessorEdgeType: {
            fragBuilder->codeAppendf("%s = %s.x * %s.xy + %s.zw;",
                                     gF.c_str(), v.fsIn(), gradCoeffs.fsIn(), gradCoeffs.fsIn());
            fragBuilder->codeAppendf("%s = %s.x * %s.x * %s.x - %s.y * %s.z;",
                                     func.c_str(), v.fsIn(), v.fsIn(),
                                     v.fsIn(), v.fsIn(), v.fsIn());
            fragBuilder->codeAppendf("%s = abs(%s);", func.c_str(), func.c_str());
            fragBuilder->codeAppendf("%s = %s * inversesqrt(dot(%s, %s));",
                                     edgeAlpha.c_str(), func.c_str(), gF.c_str(), gF.c_str());
            fragBuilder->codeAppendf("%s = max(1.0 - %s, 0.0);",
                                     edgeAlpha.c_str(), edgeAlpha.c_str());
            // Add line below for smooth cubic ramp
            // fragBuilder->codeAppendf("%s = %s * %s * (3.0 - 2.0 * %s);",
            //                        edgeAlpha.c_str(), edgeAlpha.c_str(), edgeAlpha.c_str(),
            //                        edgeAlpha.c_str());
            break;
        }
        case kFillAA_GrProcessorEdgeType: {
            fragBuilder->codeAppendf("%s = %s.x * %s.xy + %s.zw;",
                                     gF.c_str(), v.fsIn(), gradCoeffs.fsIn(), gradCoeffs.fsIn());
            fragBuilder->codeAppendf("%s = %s.x * %s.x * %s.x - %s.y * %s.z;",
                                     func.c_str(),
                                     v.fsIn(), v.fsIn(), v.fsIn(), v.fsIn(), v.fsIn());
            fragBuilder->codeAppendf("%s = %s * inversesqrt(dot(%s, %s));",
                                     edgeAlpha.c_str(), func.c_str(), gF.c_str(), gF.c_str());
            fragBuilder->codeAppendf("%s = clamp(0.5 - %s, 0.0, 1.0);",
                                     edgeAlpha.c_str(), edgeAlpha.c_str());
            // Add line below for smooth cubic ramp
            // fragBuilder->codeAppendf("%s = %s * %s * (3.0 - 2.0 * %s);",
            //                        edgeAlpha.c_str(), edgeAlpha.c_str(), edgeAlpha.c_str(),
            //                        edgeAlpha.c_str());
            break;
        }
        case kFillBW_GrProcessorEdgeType: {
            fragBuilder->codeAppendf("%s = %s.x * %s.x * %s.x - %s.y * %s.z;",
//.........这里部分代码省略.........

开发者ID:MIPS，项目名称:external-skia，代码行数:101，代码来源:GrBezierEffect.cpp

注：本文中的GrGLSLPPFragmentBuilder::declAppend方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。