Revert "Replaced all calls to fragmentPosition() with sk_FragCoord"
This reverts commit de4d301881e7fd084f1f0b359ec6f9b2bf8bd4c5.
Reason for revert: several Chrome rendering bugs on Mac
BUG=skia:
Change-Id: I492082b0b7e7c902ede4b598c5809f604d210ce1
Reviewed-on: https://skia-review.googlesource.com/7887
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
diff --git a/src/gpu/effects/GrConvexPolyEffect.cpp b/src/gpu/effects/GrConvexPolyEffect.cpp
index db8c2d9..da77eb8 100644
--- a/src/gpu/effects/GrConvexPolyEffect.cpp
+++ b/src/gpu/effects/GrConvexPolyEffect.cpp
@@ -34,6 +34,7 @@
AARectEffect(GrPrimitiveEdgeType edgeType, const SkRect& rect)
: INHERITED(kModulatesInput_OptimizationFlag), fRect(rect), fEdgeType(edgeType) {
this->initClassID<AARectEffect>();
+ this->setWillReadFragmentPosition();
}
GrGLSLFragmentProcessor* onCreateGLSLInstance() const override;
@@ -114,27 +115,24 @@
&rectName);
GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;
+ const char* fragmentPos = fragBuilder->fragmentPosition();
if (GrProcessorEdgeTypeIsAA(aare.getEdgeType())) {
// The amount of coverage removed in x and y by the edges is computed as a pair of negative
// numbers, xSub and ySub.
fragBuilder->codeAppend("\t\tfloat xSub, ySub;\n");
- fragBuilder->codeAppendf("\t\txSub = min(sk_FragCoord.x - %s.x, 0.0);\n", rectName);
- fragBuilder->codeAppendf("\t\txSub += min(%s.z - sk_FragCoord.x, 0.0);\n", rectName);
- fragBuilder->codeAppendf("\t\tySub = min(sk_FragCoord.y - %s.y, 0.0);\n", rectName);
- fragBuilder->codeAppendf("\t\tySub += min(%s.w - sk_FragCoord.y, 0.0);\n", rectName);
+ fragBuilder->codeAppendf("\t\txSub = min(%s.x - %s.x, 0.0);\n", fragmentPos, rectName);
+ fragBuilder->codeAppendf("\t\txSub += min(%s.z - %s.x, 0.0);\n", rectName, fragmentPos);
+ fragBuilder->codeAppendf("\t\tySub = min(%s.y - %s.y, 0.0);\n", fragmentPos, rectName);
+ fragBuilder->codeAppendf("\t\tySub += min(%s.w - %s.y, 0.0);\n", rectName, fragmentPos);
// Now compute coverage in x and y and multiply them to get the fraction of the pixel
// covered.
fragBuilder->codeAppendf("\t\tfloat alpha = (1.0 + max(xSub, -1.0)) * (1.0 + max(ySub, -1.0));\n");
} else {
fragBuilder->codeAppendf("\t\tfloat alpha = 1.0;\n");
- fragBuilder->codeAppendf("\t\talpha *= (sk_FragCoord.x - %s.x) > -0.5 ? 1.0 : 0.0;\n",
- rectName);
- fragBuilder->codeAppendf("\t\talpha *= (%s.z - sk_FragCoord.x) > -0.5 ? 1.0 : 0.0;\n",
- rectName);
- fragBuilder->codeAppendf("\t\talpha *= (sk_FragCoord.y - %s.y) > -0.5 ? 1.0 : 0.0;\n",
- rectName);
- fragBuilder->codeAppendf("\t\talpha *= (%s.w - sk_FragCoord.y) > -0.5 ? 1.0 : 0.0;\n",
- rectName);
+ fragBuilder->codeAppendf("\t\talpha *= (%s.x - %s.x) > -0.5 ? 1.0 : 0.0;\n", fragmentPos, rectName);
+ fragBuilder->codeAppendf("\t\talpha *= (%s.z - %s.x) > -0.5 ? 1.0 : 0.0;\n", rectName, fragmentPos);
+ fragBuilder->codeAppendf("\t\talpha *= (%s.y - %s.y) > -0.5 ? 1.0 : 0.0;\n", fragmentPos, rectName);
+ fragBuilder->codeAppendf("\t\talpha *= (%s.w - %s.y) > -0.5 ? 1.0 : 0.0;\n", rectName, fragmentPos);
}
if (GrProcessorEdgeTypeIsInverseFill(aare.getEdgeType())) {
@@ -203,10 +201,10 @@
GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;
fragBuilder->codeAppend("\t\tfloat alpha = 1.0;\n");
fragBuilder->codeAppend("\t\tfloat edge;\n");
+ const char* fragmentPos = fragBuilder->fragmentPosition();
for (int i = 0; i < cpe.getEdgeCount(); ++i) {
- fragBuilder->codeAppendf("\t\tedge = dot(%s[%d], vec3(sk_FragCoord.x, sk_FragCoord.y, "
- "1));\n",
- edgeArrayName, i);
+ fragBuilder->codeAppendf("\t\tedge = dot(%s[%d], vec3(%s.x, %s.y, 1));\n",
+ edgeArrayName, i, fragmentPos, fragmentPos);
if (GrProcessorEdgeTypeIsAA(cpe.getEdgeType())) {
fragBuilder->codeAppend("\t\tedge = clamp(edge, 0.0, 1.0);\n");
} else {
@@ -351,6 +349,7 @@
for (int i = 0; i < n; ++i) {
fEdges[3 * i + 2] += SK_ScalarHalf;
}
+ this->setWillReadFragmentPosition();
}
bool GrConvexPolyEffect::onIsEqual(const GrFragmentProcessor& other) const {