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Diffstat (limited to 'src/gpu/glsl/GrGLSLProgramDataManager.h')
-rw-r--r-- | src/gpu/glsl/GrGLSLProgramDataManager.h | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/src/gpu/glsl/GrGLSLProgramDataManager.h b/src/gpu/glsl/GrGLSLProgramDataManager.h new file mode 100644 index 0000000000..29513f08b0 --- /dev/null +++ b/src/gpu/glsl/GrGLSLProgramDataManager.h @@ -0,0 +1,78 @@ +/* + * Copyright 2015 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#ifndef GrGLSLProgramDataManager_DEFINED +#define GrGLSLProgramDataManager_DEFINED + +#include "SkTypes.h" + +/** Manages the resources used by a shader program. + * The resources are objects the program uses to communicate with the + * application code. + */ +class GrGLSLProgramDataManager : SkNoncopyable { +public: + // Opaque handle to a resource + class ShaderResourceHandle { + public: + ShaderResourceHandle(int value) + : fValue(value) { + SkASSERT(this->isValid()); + } + + ShaderResourceHandle() + : fValue(kInvalid_ShaderResourceHandle) { + } + + bool operator==(const ShaderResourceHandle& other) const { return other.fValue == fValue; } + bool isValid() const { return kInvalid_ShaderResourceHandle != fValue; } + int toIndex() const { SkASSERT(this->isValid()); return fValue; } + + private: + static const int kInvalid_ShaderResourceHandle = -1; + int fValue; + }; + + typedef ShaderResourceHandle UniformHandle; + + virtual ~GrGLSLProgramDataManager() {} + + /** Functions for uploading uniform values. The varities ending in v can be used to upload to an + * array of uniforms. arrayCount must be <= the array count of the uniform. + */ + virtual void set1f(UniformHandle, float v0) const = 0; + virtual void set1fv(UniformHandle, int arrayCount, const float v[]) const = 0; + virtual void set2f(UniformHandle, float, float) const = 0; + virtual void set2fv(UniformHandle, int arrayCount, const float v[]) const = 0; + virtual void set3f(UniformHandle, float, float, float) const = 0; + virtual void set3fv(UniformHandle, int arrayCount, const float v[]) const = 0; + virtual void set4f(UniformHandle, float, float, float, float) const = 0; + virtual void set4fv(UniformHandle, int arrayCount, const float v[]) const = 0; + // matrices are column-major, the first three upload a single matrix, the latter three upload + // arrayCount matrices into a uniform array. + virtual void setMatrix3f(UniformHandle, const float matrix[]) const = 0; + virtual void setMatrix4f(UniformHandle, const float matrix[]) const = 0; + virtual void setMatrix3fv(UniformHandle, int arrayCount, const float matrices[]) const = 0; + virtual void setMatrix4fv(UniformHandle, int arrayCount, const float matrices[]) const = 0; + + // convenience method for uploading a SkMatrix to a 3x3 matrix uniform + virtual void setSkMatrix(UniformHandle, const SkMatrix&) const = 0; + + // for nvpr only + typedef ShaderResourceHandle SeparableVaryingHandle; + virtual void setPathFragmentInputTransform(SeparableVaryingHandle u, int components, + const SkMatrix& matrix) const = 0; + +protected: + GrGLSLProgramDataManager() {} + +private: + + typedef SkNoncopyable INHERITED; +}; + +#endif |