| /* |
| * Copyright 2018 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkSLUniformCTypes_DEFINED |
| #define SkSLUniformCTypes_DEFINED |
| |
| #include "include/private/SkSLString.h" |
| #include "src/sksl/SkSLContext.h" |
| #include "src/sksl/ir/SkSLType.h" |
| #include "src/sksl/ir/SkSLVariable.h" |
| |
| #if defined(SKSL_STANDALONE) || GR_TEST_UTILS |
| |
| namespace SkSL { |
| |
| // This uses templates to define setUniform(). The template can reference token names formatted |
| // ${name} that are replaced with the actual values passed into the function. |
| // |
| // setUniform() supports these tokens: |
| // - ${pdman} replaced with value of pdmanName (1st argument) |
| // - ${uniform} replaced with value of uniformHandleName (2nd argument) |
| // - ${var} replaced with value of valueVarName (3rd argument) |
| // |
| // All templates and C++ snippets should produce valid expressions, but do not need to include |
| // semicolons or newlines, which will be handled by the code generation itself. |
| class UniformCTypeMapper { |
| public: |
| UniformCTypeMapper(const char* setUniformTemplate) : fSetUniformTemplate(setUniformTemplate) {} |
| |
| // Returns nullptr if the type and layout are not supported; the returned pointer's ownership |
| // is not transfered to the caller. |
| // |
| // The returned mapper can support tracking even if tracking is disabled based on the flags in |
| // the layout. |
| static const UniformCTypeMapper* Get(const Context& context, const Type& type, |
| const Layout& layout); |
| |
| static const UniformCTypeMapper* Get(const Context& context, const Variable& variable) { |
| return Get(context, variable.type(), variable.modifiers().fLayout); |
| } |
| |
| // Return a statement that invokes the appropriate setX method on the GrGLSLProgramDataManager |
| // specified by pdmanName, where the uniform is provided by the expression stored in |
| // uniformHandleName, and valueVarName is the variable name pointing to the ctype instance |
| // holding the new value. |
| // |
| // The returned snippet will be a valid expression. |
| String setUniform(const String& pdmanName, const String& uniformHandleName, |
| const String& valueVarName) const; |
| |
| private: |
| String fSetUniformTemplate; |
| }; |
| |
| } // namespace SkSL |
| |
| #endif // defined(SKSL_STANDALONE) || GR_TEST_UTILS |
| |
| #endif // SkSLUniformCTypes_DEFINED |