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* 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"
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 {
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;
String fSetUniformTemplate;
} // namespace SkSL
#endif // defined(SKSL_STANDALONE) || GR_TEST_UTILS
#endif // SkSLUniformCTypes_DEFINED