Move GrGLPrimitive/GeometryProc to GLSL

src/gpu/gl/GrGLGeometryProcessor.cpp

-/*
- * Copyright 2014 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include "GrGLGeometryProcessor.h"
-
-#include "glsl/GrGLSLFragmentShaderBuilder.h"
-#include "glsl/GrGLSLProcessorTypes.h"
-#include "glsl/GrGLSLProgramBuilder.h"
-#include "glsl/GrGLSLVertexShaderBuilder.h"
-
-void GrGLGeometryProcessor::emitCode(EmitArgs& args) {
-    GrGLSLVertexBuilder* vsBuilder = args.fPB->getVertexShaderBuilder();
-    GrGPArgs gpArgs;
-    this->onEmitCode(args, &gpArgs);
-    vsBuilder->transformToNormalizedDeviceSpace(gpArgs.fPositionVar);
-}
-
-void GrGLGeometryProcessor::emitTransforms(GrGLSLGPBuilder* pb,
-                                           const GrShaderVar& posVar,
-                                           const char* localCoords,
-                                           const SkMatrix& localMatrix,
-                                           const TransformsIn& tin,
-                                           TransformsOut* tout) {
-    GrGLSLVertexBuilder* vb = pb->getVertexShaderBuilder();
-    tout->push_back_n(tin.count());
-    fInstalledTransforms.push_back_n(tin.count());
-    for (int i = 0; i < tin.count(); i++) {
-        const ProcCoords& coordTransforms = tin[i];
-        fInstalledTransforms[i].push_back_n(coordTransforms.count());
-        for (int t = 0; t < coordTransforms.count(); t++) {
-            SkString strUniName("StageMatrix");
-            strUniName.appendf("_%i_%i", i, t);
-            GrSLType varyingType;
-
-            GrCoordSet coordType = coordTransforms[t]->sourceCoords();
-            uint32_t type = coordTransforms[t]->getMatrix().getType();
-            if (kLocal_GrCoordSet == coordType) {
-                type |= localMatrix.getType();
-            }
-            varyingType = SkToBool(SkMatrix::kPerspective_Mask & type) ? kVec3f_GrSLType :
-                                                                         kVec2f_GrSLType;
-            GrSLPrecision precision = coordTransforms[t]->precision();
-
-            const char* uniName;
-            fInstalledTransforms[i][t].fHandle =
-                    pb->addUniform(GrGLSLProgramBuilder::kVertex_Visibility,
-                                   kMat33f_GrSLType, precision,
-                                   strUniName.c_str(),
-                                   &uniName).toIndex();
-
-            SkString strVaryingName("MatrixCoord");
-            strVaryingName.appendf("_%i_%i", i, t);
-
-            GrGLSLVertToFrag v(varyingType);
-            pb->addVarying(strVaryingName.c_str(), &v, precision);
-
-            SkASSERT(kVec2f_GrSLType == varyingType || kVec3f_GrSLType == varyingType);
-            SkNEW_APPEND_TO_TARRAY(&(*tout)[i], GrGLSLTransformedCoords,
-                                   (SkString(v.fsIn()), varyingType));
-
-            // varying = matrix * coords (logically)
-            if (kDevice_GrCoordSet == coordType) {
-                if (kVec2f_GrSLType == varyingType) {
-                    if (kVec2f_GrSLType == posVar.getType()) {
-                        vb->codeAppendf("%s = (%s * vec3(%s, 1)).xy;",
-                                        v.vsOut(), uniName, posVar.c_str());
-                    } else {
-                        // The brackets here are just to scope the temp variable
-                        vb->codeAppendf("{ vec3 temp = %s * %s;", uniName, posVar.c_str());
-                        vb->codeAppendf("%s = vec2(temp.x/temp.z, temp.y/temp.z); }", v.vsOut());
-                    }
-                } else {
-                    if (kVec2f_GrSLType == posVar.getType()) {
-                        vb->codeAppendf("%s = %s * vec3(%s, 1);",
-                                        v.vsOut(), uniName, posVar.c_str());
-                    } else {
-                        vb->codeAppendf("%s = %s * %s;", v.vsOut(), uniName, posVar.c_str());
-                    }
-                }
-            } else {
-                if (kVec2f_GrSLType == varyingType) {
-                    vb->codeAppendf("%s = (%s * vec3(%s, 1)).xy;", v.vsOut(), uniName, localCoords);
-                } else {
-                    vb->codeAppendf("%s = %s * vec3(%s, 1);", v.vsOut(), uniName, localCoords);
-                }
-            }
-        }
-    }
-}
-
-void GrGLGeometryProcessor::emitTransforms(GrGLSLGPBuilder* pb,
-                                           const char* localCoords,
-                                           const TransformsIn& tin,
-                                           TransformsOut* tout) {
-    GrGLSLVertexBuilder* vb = pb->getVertexShaderBuilder();
-    tout->push_back_n(tin.count());
-    for (int i = 0; i < tin.count(); i++) {
-        const ProcCoords& coordTransforms = tin[i];
-        for (int t = 0; t < coordTransforms.count(); t++) {
-            GrSLType varyingType = kVec2f_GrSLType;
-
-            // Device coords aren't supported
-            SkASSERT(kDevice_GrCoordSet != coordTransforms[t]->sourceCoords());
-            GrSLPrecision precision = coordTransforms[t]->precision();
-
-            SkString strVaryingName("MatrixCoord");
-            strVaryingName.appendf("_%i_%i", i, t);
-
-            GrGLSLVertToFrag v(varyingType);
-            pb->addVarying(strVaryingName.c_str(), &v, precision);
-            vb->codeAppendf("%s = %s;", v.vsOut(), localCoords);
-
-            SkNEW_APPEND_TO_TARRAY(&(*tout)[i],
-                                   GrGLSLTransformedCoords,
-                                   (SkString(v.fsIn()), varyingType));
-        }
-    }
-}
-
-void GrGLGeometryProcessor::setupPosition(GrGLSLGPBuilder* pb,
-                                          GrGPArgs* gpArgs,
-                                          const char* posName) {
-    GrGLSLVertexBuilder* vsBuilder = pb->getVertexShaderBuilder();
-    gpArgs->fPositionVar.set(kVec2f_GrSLType, "pos2");
-    vsBuilder->codeAppendf("vec2 %s = %s;", gpArgs->fPositionVar.c_str(), posName);
-}
-
-void GrGLGeometryProcessor::setupPosition(GrGLSLGPBuilder* pb,
-                                          GrGPArgs* gpArgs,
-                                          const char* posName,
-                                          const SkMatrix& mat,
-                                          UniformHandle* viewMatrixUniform) {
-    GrGLSLVertexBuilder* vsBuilder = pb->getVertexShaderBuilder();
-    if (mat.isIdentity()) {
-        gpArgs->fPositionVar.set(kVec2f_GrSLType, "pos2");
-        vsBuilder->codeAppendf("vec2 %s = %s;", gpArgs->fPositionVar.c_str(), posName);
-    } else {
-        const char* viewMatrixName;
-        *viewMatrixUniform = pb->addUniform(GrGLSLProgramBuilder::kVertex_Visibility,
-                                            kMat33f_GrSLType, kHigh_GrSLPrecision,
-                                            "uViewM",
-                                            &viewMatrixName);
-        if (!mat.hasPerspective()) {
-            gpArgs->fPositionVar.set(kVec2f_GrSLType, "pos2");
-            vsBuilder->codeAppendf("vec2 %s = vec2(%s * vec3(%s, 1));",
-                                   gpArgs->fPositionVar.c_str(), viewMatrixName, posName);
-        } else {
-            gpArgs->fPositionVar.set(kVec3f_GrSLType, "pos3");
-            vsBuilder->codeAppendf("vec3 %s = %s * vec3(%s, 1);",
-                                   gpArgs->fPositionVar.c_str(), viewMatrixName, posName);
-        }
-    }
-}