AuroraMiddleware/skia2
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Use highp for distance field texture coord varyings.

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Because the glyph texture atlas is 1024x2048, on certain platforms
using mediump UVs is not enough resolution for doing texture lookups
and getting good results for distance fields. Bumping these
to highp solves this problem.

BUG=skia:3445

Review URL: https://codereview.chromium.org/951003002
This commit is contained in:
jvanverth 2015-02-23 13:08:39 -08:00 committed by Commit bot
parent 6df8e3495a
commit 9671ecd44e
1 changed files with 5 additions and 5 deletions
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10
src/gpu/effects/GrDistanceFieldTextureEffect.cpp
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@ -50,11 +50,11 @@ public:
vsBuilder->emitAttributes(dfTexEffect);
GrGLVertToFrag st(kVec2f_GrSLType);
args.fPB->addVarying("IntTextureCoords", &st);
args.fPB->addVarying("IntTextureCoords", &st, kHigh_GrSLPrecision);
vsBuilder->codeAppendf("%s = %s;", st.vsOut(), dfTexEffect.inTextureCoords()->fName);
GrGLVertToFrag uv(kVec2f_GrSLType);
args.fPB->addVarying("TextureCoords", &uv);
args.fPB->addVarying("TextureCoords", &uv, kHigh_GrSLPrecision);
// this is only used with text, so our texture bounds always match the glyph atlas
vsBuilder->codeAppendf("%s = vec2(" GR_FONT_ATLAS_RECIP_WIDTH ", "
GR_FONT_ATLAS_RECIP_HEIGHT ")*%s;", uv.vsOut(),
@ -335,7 +335,7 @@ public:
vsBuilder->emitAttributes(dfTexEffect);
GrGLVertToFrag v(kVec2f_GrSLType);
args.fPB->addVarying("TextureCoords", &v);
args.fPB->addVarying("TextureCoords", &v, kHigh_GrSLPrecision);
// setup pass through color
this->setupColorPassThrough(pb, local.fInputColorType, args.fOutputColor,
@ -576,11 +576,11 @@ public:
vsBuilder->emitAttributes(dfTexEffect);
GrGLVertToFrag st(kVec2f_GrSLType);
args.fPB->addVarying("IntTextureCoords", &st);
args.fPB->addVarying("IntTextureCoords", &st, kHigh_GrSLPrecision);
vsBuilder->codeAppendf("%s = %s;", st.vsOut(), dfTexEffect.inTextureCoords()->fName);
GrGLVertToFrag uv(kVec2f_GrSLType);
args.fPB->addVarying("TextureCoords", &uv);
args.fPB->addVarying("TextureCoords", &uv, kHigh_GrSLPrecision);
// this is only used with text, so our texture bounds always match the glyph atlas
vsBuilder->codeAppendf("%s = vec2(" GR_FONT_ATLAS_RECIP_WIDTH ", "
GR_FONT_ATLAS_RECIP_HEIGHT ")*%s;", uv.vsOut(),