| // 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 |
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| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #ifndef SRC_DAWN_NATIVE_BLITBUFFERTODEPTHSTENCIL_H_ |
| #define SRC_DAWN_NATIVE_BLITBUFFERTODEPTHSTENCIL_H_ |
| |
| #include "dawn/native/Error.h" |
| |
| namespace dawn::native { |
| |
| struct TextureCopy; |
| |
| // BlitBufferToDepth works around issues where copying from a buffer |
| // to depth does not work on some drivers. |
| // Currently, only depth16unorm textures can be CopyDst, so only depth16unorm |
| // is supported. |
| // It does the following: |
| // - Copies buffer data to an rg8uint texture. |
| // - Sets the viewport to the copy rect. |
| // - Uploads the copy origin to a uniform buffer. |
| // - For each destination layer: |
| // - Performs a draw to sample the rg8uint data, computes the |
| // floating point depth value, and writes the frag depth. |
| |
| MaybeError BlitStagingBufferToDepth(DeviceBase* device, |
| BufferBase* buffer, |
| const TextureDataLayout& src, |
| const TextureCopy& dst, |
| const Extent3D& copyExtent); |
| |
| MaybeError BlitBufferToDepth(DeviceBase* device, |
| CommandEncoder* commandEncoder, |
| BufferBase* buffer, |
| const TextureDataLayout& src, |
| const TextureCopy& dst, |
| const Extent3D& copyExtent); |
| |
| // BlitBufferToStencil works around issues where copying from a buffer |
| // to stencil does not work on some drivers. |
| // It does the following: |
| // - Copies buffer data to an r8uint texture. |
| // - Sets the viewport to the copy rect. |
| // - Uploads the copy origin to a uniform buffer. |
| // - For each destination layer: |
| // - Performs a draw to clear stencil to 0. |
| // - Performs 8 draws for each bit of stencil to set the respective |
| // stencil bit to 1, if the source r8 texture also has that bit set. |
| // If the source r8 texture does not, the fragment is discarded. |
| |
| MaybeError BlitStagingBufferToStencil(DeviceBase* device, |
| BufferBase* buffer, |
| const TextureDataLayout& src, |
| const TextureCopy& dst, |
| const Extent3D& copyExtent); |
| |
| MaybeError BlitBufferToStencil(DeviceBase* device, |
| CommandEncoder* commandEncoder, |
| BufferBase* buffer, |
| const TextureDataLayout& src, |
| const TextureCopy& dst, |
| const Extent3D& copyExtent); |
| |
| } // namespace dawn::native |
| |
| #endif // SRC_DAWN_NATIVE_BLITBUFFERTODEPTHSTENCIL_H_ |