Rename GrGLUniformManager to GrGLUniform and ref GrGLUniforms directly

src/gpu/gl/GrGLUniform.h

+/*
+ * Copyright 2012 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef GrGLUniform_DEFINED
+#define GrGLUniform_DEFINED
+
+#include "gl/GrGLShaderVar.h"
+#include "gl/GrGLSL.h"
+#include "GrAllocator.h"
+
+#include "SkTArray.h"
+
+class GrGLContext;
+class SkMatrix;
+
+/** Wrapper for a uniform in a program.
+*/
+class GrGLUniform {
+    enum {
+        kUnusedUniform = -1,
+    };
+
+public:
+    GrGLUniform()
+        : fVSLocation(kUnusedUniform)
+        , fFSLocation(kUnusedUniform) {
+    }
+
+#if GR_DEBUG
+    void initType(int arrayCount, GrSLType type) {
+        GrAssert(GrGLShaderVar::kNonArray == arrayCount || arrayCount > 0);
+        fArrayCount = arrayCount;
+        fType = type;
+    }
+#endif
+
+    void initLocations(const GrGLContext& context, GrGLuint programID, const char* name, uint32_t visibility);
+
+    /** Functions for uploading uniform values. The varities ending in v can be used to upload to an
+     *  array of uniforms. offset + arrayCount must be <= the array count of the uniform.
+     */
+    void setSampler(const GrGLContext&, GrGLint texUnit) const;
+    void set1f(const GrGLContext&, GrGLfloat v0) const;
+    void set1fv(const GrGLContext&, int offset, int arrayCount, const GrGLfloat v[]) const;
+    void set2f(const GrGLContext&, GrGLfloat, GrGLfloat) const;
+    void set2fv(const GrGLContext&, int offset, int arrayCount, const GrGLfloat v[]) const;
+    void set3f(const GrGLContext&, GrGLfloat, GrGLfloat, GrGLfloat) const;
+    void set3fv(const GrGLContext&, int offset, int arrayCount, const GrGLfloat v[]) const;
+    void set4f(const GrGLContext&, GrGLfloat, GrGLfloat, GrGLfloat, GrGLfloat) const;
+    void set4fv(const GrGLContext&, int offset, int arrayCount, const GrGLfloat v[]) const;
+    // matrices are column-major, the first three upload a single matrix, the latter three upload
+    // arrayCount matrices into a uniform array.
+    void setMatrix3f(const GrGLContext&, const GrGLfloat matrix[]) const;
+    void setMatrix4f(const GrGLContext&, const GrGLfloat matrix[]) const;
+    void setMatrix3fv(const GrGLContext&, int offset, int arrayCount, const GrGLfloat matrices[]) const;
+    void setMatrix4fv(const GrGLContext&, int offset, int arrayCount, const GrGLfloat matrices[]) const;
+
+    // convenience method for uploading a SkMatrix to a 3x3 matrix uniform
+    void setSkMatrix(const GrGLContext&, const SkMatrix&) const;
+
+private:
+    GrGLint     fVSLocation;
+    GrGLint     fFSLocation;
+#if GR_DEBUG
+    int         fArrayCount;
+    GrSLType    fType;
+#endif
+};
+
+#endif