Move VertexBuilder to a GrGLFullShaderBuilder subclass
Removes the VertexBuilder nested class from GrGLShaderBuilder in favor
of a new GrGLFullShaderBuilder subclass, and adds an optional emitCode
overload to GrGLEffect that takes a GrGLFullShaderBuilder. Makes
setData virtual in GrGLEffectArray and adds a GrGLVertexEffectArray
subclass that gets built using a GrGLFullShaderBuilder. Also adds a
new GrGLVertexEffect subclass that makes the GrGLFullShaderBuilder
overload required for emitCode, and updates GrGLEffects to inherit
from GrGLVertexEffect where needed.
R=bsalomon@google.com
Author: cdalton@nvidia.com
Review URL: https://codereview.chromium.org/25474006
git-svn-id: http://skia.googlecode.com/svn/trunk@11612 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/gl/GrGLVertexEffect.h b/src/gpu/gl/GrGLVertexEffect.h
new file mode 100644
index 0000000..1b4c744
--- /dev/null
+++ b/src/gpu/gl/GrGLVertexEffect.h
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef GrGLVertexEffect_DEFINED
+#define GrGLVertexEffect_DEFINED
+
+#include "GrGLEffect.h"
+
+/**
+ * If a GL effect needs a GrGLFullShaderBuilder* object to emit vertex code, then it must inherit
+ * from this class. Since paths don't have vertices, this class is only meant to be used internally
+ * by skia, for special cases.
+ */
+class GrGLVertexEffect : public GrGLEffect {
+public:
+ GrGLVertexEffect(const GrBackendEffectFactory& factory)
+ : INHERITED(factory) { fIsVertexEffect = true; }
+
+ /**
+ * This is similar to emitCode() in the base class, except it takes a full shader builder.
+ * This allows the effect subclass to emit vertex code.
+ */
+ virtual void emitCode(GrGLFullShaderBuilder* builder,
+ const GrDrawEffect& drawEffect,
+ EffectKey key,
+ const char* outputColor,
+ const char* inputColor,
+ const TransformedCoordsArray& coords,
+ const TextureSamplerArray& samplers) = 0;
+
+ /**
+ * Provide a default override for base class's emitCode() function.
+ */
+ virtual void emitCode(GrGLShaderBuilder* builder,
+ const GrDrawEffect& drawEffect,
+ EffectKey key,
+ const char* outputColor,
+ const char* inputColor,
+ const TransformedCoordsArray& coords,
+ const TextureSamplerArray& samplers) SK_OVERRIDE {
+ GrCrash("GrGLVertexEffect requires GrGLFullShaderBuilder* overload for emitCode().");
+ }
+
+private:
+ typedef GrGLEffect INHERITED;
+};
+
+#endif