| /* |
| * Copyright 2011 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "GrGLSL.h" |
| #include "SkString.h" |
| |
| bool GrGLSLSupportsNamedFragmentShaderOutputs(GrGLSLGeneration gen) { |
| switch (gen) { |
| case k110_GrGLSLGeneration: |
| return false; |
| case k130_GrGLSLGeneration: |
| case k140_GrGLSLGeneration: |
| case k150_GrGLSLGeneration: |
| case k330_GrGLSLGeneration: |
| case k310es_GrGLSLGeneration: |
| return true; |
| } |
| return false; |
| } |
| |
| void GrGLSLMulVarBy4f(SkString* outAppend, const char* vec4VarName, const GrGLSLExpr4& mulFactor) { |
| if (mulFactor.isOnes()) { |
| *outAppend = SkString(); |
| } |
| |
| if (mulFactor.isZeros()) { |
| outAppend->appendf("%s = vec4(0);", vec4VarName); |
| } else { |
| outAppend->appendf("%s *= %s;", vec4VarName, mulFactor.c_str()); |
| } |
| } |