mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-11-14 06:57:27 +01:00
427 lines
12 KiB
Go
427 lines
12 KiB
Go
// Copyright 2023 The Ebitengine Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package directx
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import (
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"errors"
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"fmt"
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"image"
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"unsafe"
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"github.com/hajimehoshi/ebiten/v2/internal/graphics"
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"github.com/hajimehoshi/ebiten/v2/internal/graphicsdriver"
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)
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type image12 struct {
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graphics *graphics12
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id graphicsdriver.ImageID
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width int
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height int
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screen bool
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states [frameCount]_D3D12_RESOURCE_STATES
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texture *_ID3D12Resource
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stencil *_ID3D12Resource
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rtvDescriptorHeap *_ID3D12DescriptorHeap
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dsvDescriptorHeap *_ID3D12DescriptorHeap
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uploadingStagingBuffers []*_ID3D12Resource
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}
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func (i *image12) ID() graphicsdriver.ImageID {
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return i.id
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}
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func (i *image12) Dispose() {
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// Dipose the images later as this image might still be used.
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i.graphics.removeImage(i)
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}
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func (i *image12) disposeImpl() {
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if i.dsvDescriptorHeap != nil {
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i.dsvDescriptorHeap.Release()
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i.dsvDescriptorHeap = nil
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}
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if i.rtvDescriptorHeap != nil {
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i.rtvDescriptorHeap.Release()
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i.rtvDescriptorHeap = nil
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}
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if i.stencil != nil {
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i.stencil.Release()
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i.stencil = nil
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}
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if i.texture != nil {
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i.texture.Release()
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i.texture = nil
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}
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}
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func (i *image12) ReadPixels(args []graphicsdriver.PixelsArgs) error {
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if i.screen {
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return errors.New("directx: ReadPixels cannot be called on the screen")
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}
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if err := i.graphics.flushCommandList(i.graphics.drawCommandList); err != nil {
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return err
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}
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var unionRegion image.Rectangle
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for _, a := range args {
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unionRegion = unionRegion.Union(a.Region)
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}
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desc := _D3D12_RESOURCE_DESC{
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Dimension: _D3D12_RESOURCE_DIMENSION_TEXTURE2D,
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Alignment: 0,
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Width: uint64(unionRegion.Dx()),
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Height: uint32(unionRegion.Dy()),
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DepthOrArraySize: 1,
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MipLevels: 0,
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Format: _DXGI_FORMAT_R8G8B8A8_UNORM,
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SampleDesc: _DXGI_SAMPLE_DESC{
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Count: 1,
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Quality: 0,
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},
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Layout: _D3D12_TEXTURE_LAYOUT_UNKNOWN,
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Flags: _D3D12_RESOURCE_FLAG_ALLOW_RENDER_TARGET,
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}
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layouts, _, _, totalBytes := i.graphics.device.GetCopyableFootprints(&desc, 0, 1, 0)
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readingStagingBuffer, err := createBuffer(i.graphics.device, totalBytes, _D3D12_HEAP_TYPE_READBACK)
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if err != nil {
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return err
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}
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defer func() {
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readingStagingBuffer.Release()
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}()
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if rb, ok := i.transiteState(_D3D12_RESOURCE_STATE_COPY_SOURCE); ok {
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i.graphics.copyCommandList.ResourceBarrier([]_D3D12_RESOURCE_BARRIER_Transition{rb})
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}
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m, err := readingStagingBuffer.Map(0, &_D3D12_RANGE{0, 0})
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if err != nil {
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return err
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}
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dst := _D3D12_TEXTURE_COPY_LOCATION_PlacedFootPrint{
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pResource: readingStagingBuffer,
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Type: _D3D12_TEXTURE_COPY_TYPE_PLACED_FOOTPRINT,
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PlacedFootprint: layouts,
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}
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src := _D3D12_TEXTURE_COPY_LOCATION_SubresourceIndex{
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pResource: i.texture,
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Type: _D3D12_TEXTURE_COPY_TYPE_SUBRESOURCE_INDEX,
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SubresourceIndex: 0,
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}
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i.graphics.needFlushCopyCommandList = true
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i.graphics.copyCommandList.CopyTextureRegion_PlacedFootPrint_SubresourceIndex(
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&dst, 0, 0, 0, &src, &_D3D12_BOX{
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left: uint32(unionRegion.Min.X),
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top: uint32(unionRegion.Min.Y),
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front: 0,
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right: uint32(unionRegion.Max.X),
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bottom: uint32(unionRegion.Max.Y),
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back: 1,
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})
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if err := i.graphics.flushCommandList(i.graphics.copyCommandList); err != nil {
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return err
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}
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stride := int(layouts.Footprint.RowPitch)
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srcPix := unsafe.Slice((*byte)(unsafe.Pointer(m)), totalBytes)
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for _, a := range args {
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w := a.Region.Dx()
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if unionRegion == a.Region && stride == 4*w {
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copy(a.Pixels, srcPix)
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continue
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}
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offset := 4*(a.Region.Min.X-unionRegion.Min.X) + stride*(a.Region.Min.Y-unionRegion.Min.Y)
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for j := 0; j < a.Region.Dy(); j++ {
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copy(a.Pixels[j*w*4:(j+1)*w*4], srcPix[offset+j*stride:])
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}
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}
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readingStagingBuffer.Unmap(0, nil)
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return nil
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}
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func (i *image12) WritePixels(args []graphicsdriver.PixelsArgs) error {
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if i.screen {
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return errors.New("directx: WritePixels cannot be called on the screen")
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}
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if err := i.graphics.flushCommandList(i.graphics.drawCommandList); err != nil {
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return err
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}
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var region image.Rectangle
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for _, a := range args {
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region = region.Union(a.Region)
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}
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desc := _D3D12_RESOURCE_DESC{
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Dimension: _D3D12_RESOURCE_DIMENSION_TEXTURE2D,
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Alignment: 0,
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Width: uint64(region.Dx()),
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Height: uint32(region.Dy()),
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DepthOrArraySize: 1,
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MipLevels: 0,
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Format: _DXGI_FORMAT_R8G8B8A8_UNORM,
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SampleDesc: _DXGI_SAMPLE_DESC{
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Count: 1,
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Quality: 0,
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},
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Layout: _D3D12_TEXTURE_LAYOUT_UNKNOWN,
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Flags: _D3D12_RESOURCE_FLAG_ALLOW_RENDER_TARGET,
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}
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layouts, _, _, totalBytes := i.graphics.device.GetCopyableFootprints(&desc, 0, 1, 0)
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uploadingStagingBuffer, err := createBuffer(i.graphics.device, totalBytes, _D3D12_HEAP_TYPE_UPLOAD)
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if err != nil {
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return err
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}
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i.uploadingStagingBuffers = append(i.uploadingStagingBuffers, uploadingStagingBuffer)
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if rb, ok := i.transiteState(_D3D12_RESOURCE_STATE_COPY_DEST); ok {
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i.graphics.copyCommandList.ResourceBarrier([]_D3D12_RESOURCE_BARRIER_Transition{rb})
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}
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m, err := uploadingStagingBuffer.Map(0, &_D3D12_RANGE{0, 0})
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if err != nil {
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return err
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}
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i.graphics.needFlushCopyCommandList = true
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srcBytes := unsafe.Slice((*byte)(unsafe.Pointer(m)), totalBytes)
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for _, a := range args {
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for j := 0; j < a.Region.Dy(); j++ {
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copy(srcBytes[((a.Region.Min.Y-region.Min.Y)+j)*int(layouts.Footprint.RowPitch)+(a.Region.Min.X-region.Min.X)*4:], a.Pixels[j*a.Region.Dx()*4:(j+1)*a.Region.Dx()*4])
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}
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}
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for _, a := range args {
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dst := _D3D12_TEXTURE_COPY_LOCATION_SubresourceIndex{
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pResource: i.texture,
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Type: _D3D12_TEXTURE_COPY_TYPE_SUBRESOURCE_INDEX,
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SubresourceIndex: 0,
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}
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src := _D3D12_TEXTURE_COPY_LOCATION_PlacedFootPrint{
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pResource: uploadingStagingBuffer,
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Type: _D3D12_TEXTURE_COPY_TYPE_PLACED_FOOTPRINT,
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PlacedFootprint: layouts,
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}
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i.graphics.copyCommandList.CopyTextureRegion_SubresourceIndex_PlacedFootPrint(
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&dst, uint32(a.Region.Min.X), uint32(a.Region.Min.Y), 0, &src, &_D3D12_BOX{
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left: uint32(a.Region.Min.X - region.Min.X),
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top: uint32(a.Region.Min.Y - region.Min.Y),
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front: 0,
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right: uint32(a.Region.Max.X - region.Min.X),
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bottom: uint32(a.Region.Max.Y - region.Min.Y),
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back: 1,
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})
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}
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uploadingStagingBuffer.Unmap(0, nil)
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return nil
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}
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func (i *image12) resource() *_ID3D12Resource {
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if i.screen {
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return i.graphics.renderTargets[i.graphics.frameIndex]
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}
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return i.texture
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}
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func (i *image12) state() _D3D12_RESOURCE_STATES {
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if i.screen {
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return i.states[i.graphics.frameIndex]
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}
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return i.states[0]
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}
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func (i *image12) setState(newState _D3D12_RESOURCE_STATES) {
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if i.screen {
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i.states[i.graphics.frameIndex] = newState
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return
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}
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i.states[0] = newState
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}
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func (i *image12) transiteState(newState _D3D12_RESOURCE_STATES) (_D3D12_RESOURCE_BARRIER_Transition, bool) {
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if i.state() == newState {
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return _D3D12_RESOURCE_BARRIER_Transition{}, false
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}
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oldState := i.state()
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i.setState(newState)
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return _D3D12_RESOURCE_BARRIER_Transition{
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Type: _D3D12_RESOURCE_BARRIER_TYPE_TRANSITION,
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Flags: _D3D12_RESOURCE_BARRIER_FLAG_NONE,
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Transition: _D3D12_RESOURCE_TRANSITION_BARRIER{
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pResource: i.resource(),
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Subresource: _D3D12_RESOURCE_BARRIER_ALL_SUBRESOURCES,
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StateBefore: oldState,
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StateAfter: newState,
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},
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}, true
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}
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func (i *image12) internalSize() (int, int) {
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if i.screen {
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return i.width, i.height
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}
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return graphics.InternalImageSize(i.width), graphics.InternalImageSize(i.height)
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}
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func (i *image12) setAsRenderTarget(drawCommandList *_ID3D12GraphicsCommandList, device *_ID3D12Device, useStencil bool) error {
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if err := i.ensureRenderTargetView(device); err != nil {
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return err
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}
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if i.screen {
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if useStencil {
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return fmt.Errorf("directx: stencils are not available on the screen framebuffer")
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}
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rtv, err := i.graphics.rtvDescriptorHeap.GetCPUDescriptorHandleForHeapStart()
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if err != nil {
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return err
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}
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rtv.Offset(int32(i.graphics.frameIndex), i.graphics.rtvDescriptorSize)
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drawCommandList.OMSetRenderTargets([]_D3D12_CPU_DESCRIPTOR_HANDLE{rtv}, false, nil)
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return nil
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}
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rtv, err := i.rtvDescriptorHeap.GetCPUDescriptorHandleForHeapStart()
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if err != nil {
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return err
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}
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if !useStencil {
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drawCommandList.OMSetRenderTargets([]_D3D12_CPU_DESCRIPTOR_HANDLE{rtv}, false, nil)
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return nil
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}
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if err := i.ensureDepthStencilView(device); err != nil {
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return err
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}
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dsv, err := i.dsvDescriptorHeap.GetCPUDescriptorHandleForHeapStart()
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if err != nil {
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return err
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}
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drawCommandList.OMSetStencilRef(0)
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drawCommandList.OMSetRenderTargets([]_D3D12_CPU_DESCRIPTOR_HANDLE{rtv}, false, &dsv)
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drawCommandList.ClearDepthStencilView(dsv, _D3D12_CLEAR_FLAG_STENCIL, 0, 0, nil)
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return nil
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}
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func (i *image12) ensureRenderTargetView(device *_ID3D12Device) error {
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if i.screen {
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return nil
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}
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if i.rtvDescriptorHeap != nil {
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return nil
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}
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h, err := device.CreateDescriptorHeap(&_D3D12_DESCRIPTOR_HEAP_DESC{
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Type: _D3D12_DESCRIPTOR_HEAP_TYPE_RTV,
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NumDescriptors: 1,
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Flags: _D3D12_DESCRIPTOR_HEAP_FLAG_NONE,
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NodeMask: 0,
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})
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if err != nil {
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return err
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}
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i.rtvDescriptorHeap = h
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rtv, err := i.rtvDescriptorHeap.GetCPUDescriptorHandleForHeapStart()
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if err != nil {
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return err
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}
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device.CreateRenderTargetView(i.texture, nil, rtv)
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return nil
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}
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func (i *image12) ensureDepthStencilView(device *_ID3D12Device) error {
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if i.screen {
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return fmt.Errorf("directx: stencils are not available on the screen framebuffer")
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}
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if i.dsvDescriptorHeap != nil {
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return nil
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}
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h, err := device.CreateDescriptorHeap(&_D3D12_DESCRIPTOR_HEAP_DESC{
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Type: _D3D12_DESCRIPTOR_HEAP_TYPE_DSV,
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NumDescriptors: 1,
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Flags: _D3D12_DESCRIPTOR_HEAP_FLAG_NONE,
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NodeMask: 0,
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})
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if err != nil {
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return err
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}
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i.dsvDescriptorHeap = h
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dsv, err := i.dsvDescriptorHeap.GetCPUDescriptorHandleForHeapStart()
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if err != nil {
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return err
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}
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if i.stencil == nil {
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s, err := device.CreateCommittedResource(&_D3D12_HEAP_PROPERTIES{
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Type: _D3D12_HEAP_TYPE_DEFAULT,
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CPUPageProperty: _D3D12_CPU_PAGE_PROPERTY_UNKNOWN,
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MemoryPoolPreference: _D3D12_MEMORY_POOL_UNKNOWN,
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CreationNodeMask: 1,
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VisibleNodeMask: 1,
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}, _D3D12_HEAP_FLAG_NONE, &_D3D12_RESOURCE_DESC{
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Dimension: _D3D12_RESOURCE_DIMENSION_TEXTURE2D,
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Alignment: 0,
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Width: uint64(graphics.InternalImageSize(i.width)),
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Height: uint32(graphics.InternalImageSize(i.height)),
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DepthOrArraySize: 1,
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MipLevels: 0,
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Format: _DXGI_FORMAT_D24_UNORM_S8_UINT,
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SampleDesc: _DXGI_SAMPLE_DESC{
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Count: 1,
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Quality: 0,
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},
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Layout: _D3D12_TEXTURE_LAYOUT_UNKNOWN,
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Flags: _D3D12_RESOURCE_FLAG_ALLOW_DEPTH_STENCIL,
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}, _D3D12_RESOURCE_STATE_DEPTH_WRITE, &_D3D12_CLEAR_VALUE{
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Format: _DXGI_FORMAT_D24_UNORM_S8_UINT,
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})
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if err != nil {
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return err
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}
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i.stencil = s
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}
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device.CreateDepthStencilView(i.stencil, nil, dsv)
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return nil
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}
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func (i *image12) releaseUploadingStagingBuffers() {
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for idx, buf := range i.uploadingStagingBuffers {
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buf.Release()
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i.uploadingStagingBuffers[idx] = nil
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}
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i.uploadingStagingBuffers = i.uploadingStagingBuffers[:0]
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}
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