| // Copyright 2020 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef SRC_GRAPHICS_DISPLAY_DRIVERS_COORDINATOR_PREFERRED_SCANOUT_IMAGE_TYPE_H_ |
| #define SRC_GRAPHICS_DISPLAY_DRIVERS_COORDINATOR_PREFERRED_SCANOUT_IMAGE_TYPE_H_ |
| |
| #include <cstdint> |
| |
| // display-controller.fidl states that IMAGE_TILING_TYPE_LINEAR is the only universally-supported |
| // image type defined by the API, and that any other value must be agreed upon by all parties (e.g. |
| // the image producer, the display driver, etc.) through some other means, perhaps a future |
| // negotiation API. For now, this header serves the role of "some other means". |
| |
| #if defined(__x86_64__) |
| // `fuchsia.hardware.intelgpucore/IMAGE_TILING_TYPE_X_TILED` from the Banjo API. |
| constexpr uint32_t IMAGE_TILING_TYPE_PREFERRED_SCANOUT = 1; |
| #elif defined(__aarch64__) |
| // `fuchsia.hardware.display.types/IMAGE_TILING_TYPE_LINEAR` from the FIDL API. |
| // `fuchsia.hardware.display.controller/ImageTilingType.SIMPLE` from the Banjo API. |
| constexpr uint32_t IMAGE_TILING_TYPE_PREFERRED_SCANOUT = 0; |
| #elif defined(__riscv) |
| // `fuchsia.hardware.display.types/IMAGE_TILING_TYPE_LINEAR` from the FIDL API. |
| // `fuchsia.hardware.display.controller/ImageTilingType.SIMPLE` from the Banjo API. |
| // |
| // This may be revisited, depending on the hardware that we end supporting. |
| constexpr uint32_t IMAGE_TILING_TYPE_PREFERRED_SCANOUT = 0; |
| #else |
| #error "Preferred scanout image format not defined for this platform." |
| #endif |
| |
| #endif // SRC_GRAPHICS_DISPLAY_DRIVERS_COORDINATOR_PREFERRED_SCANOUT_IMAGE_TYPE_H_ |
