150 lines
4.0 KiB
C++
150 lines
4.0 KiB
C++
/*
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Copyright 2021 flyinghead
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This file is part of Flycast.
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Flycast is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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Flycast is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Flycast. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "dx11_texture.h"
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#include "dx11context.h"
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#include <versionhelpers.h>
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void DX11Texture::UploadToGPU(int width, int height, u8* temp_tex_buffer, bool mipmapped, bool mipmapsIncluded)
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{
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D3D11_TEXTURE2D_DESC desc{};
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desc.Width = width;
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desc.Height = height;
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desc.ArraySize = 1;
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desc.SampleDesc.Count = 1;
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desc.Usage = D3D11_USAGE_DEFAULT;
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desc.BindFlags = D3D11_BIND_SHADER_RESOURCE;
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u32 bpp = 2;
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switch (tex_type)
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{
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case TextureType::_5551:
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desc.Format = DXGI_FORMAT_B5G5R5A1_UNORM;
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break;
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case TextureType::_4444:
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desc.Format = DXGI_FORMAT_B4G4R4A4_UNORM;
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break;
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case TextureType::_565:
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desc.Format = DXGI_FORMAT_B5G6R5_UNORM;
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break;
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case TextureType::_8888:
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bpp = 4;
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desc.Format = DXGI_FORMAT_B8G8R8A8_UNORM;
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break;
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case TextureType::_8:
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bpp = 1;
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desc.Format = DXGI_FORMAT_A8_UNORM;
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break;
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default:
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return;
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}
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int mipmapLevels = 1;
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if (mipmapsIncluded)
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{
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mipmapLevels = 0;
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int dim = width;
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while (dim != 0)
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{
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mipmapLevels++;
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dim >>= 1;
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}
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}
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desc.MipLevels = mipmapLevels;
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if (texture != nullptr)
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{
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// Recreate the texture if its dimensions or format have changed
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D3D11_TEXTURE2D_DESC curDesc;
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texture->GetDesc(&curDesc);
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if (desc.Width != curDesc.Width || desc.Height != curDesc.Height || desc.Format != curDesc.Format || desc.MipLevels != curDesc.MipLevels)
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{
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textureView.reset();
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texture.reset();
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}
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}
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if (texture == nullptr)
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{
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if (mipmapped && !mipmapsIncluded)
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{
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desc.MipLevels = 0;
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desc.MiscFlags = D3D11_RESOURCE_MISC_GENERATE_MIPS;
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desc.BindFlags |= D3D11_BIND_RENDER_TARGET;
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mipmapLevels = 1;
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}
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if (SUCCEEDED(theDX11Context.getDevice()->CreateTexture2D(&desc, nullptr, &texture.get())))
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{
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D3D11_SHADER_RESOURCE_VIEW_DESC viewDesc{};
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viewDesc.Format = desc.Format;
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viewDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
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viewDesc.Texture2D.MipLevels = desc.MipLevels == 0 ? -1 : desc.MipLevels;
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theDX11Context.getDevice()->CreateShaderResourceView(texture, &viewDesc, &textureView.get());
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}
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verify(texture != nullptr);
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verify(textureView != nullptr);
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}
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for (int i = 0; i < mipmapLevels; i++)
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{
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u32 w = mipmapLevels == 1 ? width : 1 << i;
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u32 h = mipmapLevels == 1 ? height : 1 << i;
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theDX11Context.getDeviceContext()->UpdateSubresource(texture, mipmapLevels - i - 1, nullptr, temp_tex_buffer, w * bpp, w * bpp * h);
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temp_tex_buffer += (1 << (2 * i)) * bpp;
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}
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if (mipmapped && !mipmapsIncluded)
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theDX11Context.getDeviceContext()->GenerateMips(textureView);
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}
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#ifndef TARGET_UWP
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bool DX11Texture::Force32BitTexture(TextureType type) const
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{
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if (IsWindows8OrGreater())
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return false;
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// DXGI_FORMAT_B5G5R5A1_UNORM, DXGI_FORMAT_B4G4R4A4_UNORM and DXGI_FORMAT_B5G6R5_UNORM
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// are not supported on Windows 7
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return type == TextureType::_565 || type == TextureType::_5551 || type == TextureType::_4444;
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}
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#endif
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bool DX11Texture::Delete()
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{
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if (!BaseTextureCacheData::Delete())
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return false;
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textureView.reset();
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texture.reset();
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return true;
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}
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void DX11Texture::loadCustomTexture()
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{
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u32 size = custom_width * custom_height;
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u8 *p = custom_image_data;
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while (size--)
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{
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// RGBA -> BGRA
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std::swap(p[0], p[2]);
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p += 4;
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}
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CheckCustomTexture();
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}
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HRESULT Samplers::createSampler(const D3D11_SAMPLER_DESC *desc, ID3D11SamplerState **sampler)
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{
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return theDX11Context.getDevice()->CreateSamplerState(desc, sampler);
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}
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