// Copyright 2023 The Dawn & Tint Authors // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are met: // // 1. Redistributions of source code must retain the above copyright notice, this // list of conditions and the following disclaimer. // // 2. Redistributions in binary form must reproduce the above copyright notice, // this list of conditions and the following disclaimer in the documentation // and/or other materials provided with the distribution. // // 3. Neither the name of the copyright holder nor the names of its // contributors may be used to endorse or promote products derived from // this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #ifndef SRC_TINT_LANG_MSL_WRITER_AST_RAISE_PIXEL_LOCAL_H_ #define SRC_TINT_LANG_MSL_WRITER_AST_RAISE_PIXEL_LOCAL_H_ #include <string> #include "src/tint/lang/wgsl/ast/internal_attribute.h" #include "src/tint/lang/wgsl/ast/transform/transform.h" #include "src/tint/utils/containers/hashmap.h" namespace tint::msl::writer { /// PixelLocal transforms module-scope `var<pixel_local>`s and fragment entry point functions that /// use them: /// * `var<pixel_local>` will be transformed to `var<private>`. /// * All of the members of the pixel local struct will have an additional `@color` attribute added. /// * The chromium_experimental_pixel_local extension enable will be replaced with an enable for /// chromium_experimental_framebuffer_fetch. /// * The entry point function will be wrapped with another function ('outer') that calls the /// 'inner' function. /// * The outer function will have an additional parameter of the pixel local struct type, which is /// copied to the module-scope var before calling the 'inner' function. /// * The outer function will have a new struct return type which holds both the pixel local members /// and the returned value(s) of the 'inner' function. class PixelLocal final : public Castable<PixelLocal, ast::transform::Transform> { … }; } // namespace tint::msl::writer #endif // SRC_TINT_LANG_MSL_WRITER_AST_RAISE_PIXEL_LOCAL_H_