mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
synced 2024-12-13 04:20:10 +00:00
166 lines
6.0 KiB
C++
166 lines
6.0 KiB
C++
//
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// Copyright 2015 Pixar
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//
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// Licensed under the Apache License, Version 2.0 (the "Apache License")
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// with the following modification; you may not use this file except in
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// compliance with the Apache License and the following modification to it:
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// Section 6. Trademarks. is deleted and replaced with:
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//
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// 6. Trademarks. This License does not grant permission to use the trade
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// names, trademarks, service marks, or product names of the Licensor
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// and its affiliates, except as required to comply with Section 4(c) of
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// the License and to reproduce the content of the NOTICE file.
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//
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// You may obtain a copy of the Apache 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 Apache License with the above modification is
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// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the Apache License for the specific
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// language governing permissions and limitations under the Apache License.
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//
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#include "../osd/d3d11LegacyGregoryPatchTable.h"
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#include <D3D11.h>
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namespace OpenSubdiv {
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namespace OPENSUBDIV_VERSION {
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namespace Osd {
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D3D11LegacyGregoryPatchTable::D3D11LegacyGregoryPatchTable() :
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_vertexValenceBuffer(0), _quadOffsetsBuffer(0),
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_vertexSRV(0), _vertexValenceSRV(0), _quadOffsetsSRV(0) {
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_quadOffsetsBase[0] = _quadOffsetsBase[1] = 0;
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}
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D3D11LegacyGregoryPatchTable::~D3D11LegacyGregoryPatchTable() {
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if (_vertexValenceBuffer) _vertexValenceBuffer->Release();
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if (_quadOffsetsBuffer) _quadOffsetsBuffer->Release();
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if (_vertexSRV) _vertexSRV->Release();
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if (_vertexValenceSRV) _vertexValenceSRV->Release();
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if (_quadOffsetsSRV) _quadOffsetsSRV->Release();
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}
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D3D11LegacyGregoryPatchTable *
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D3D11LegacyGregoryPatchTable::Create(Far::PatchTable const *farPatchTable,
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ID3D11DeviceContext *pd3d11DeviceContext) {
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ID3D11Device *pd3d11Device = NULL;
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pd3d11DeviceContext->GetDevice(&pd3d11Device);
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assert(pd3d11Device);
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D3D11LegacyGregoryPatchTable *result = new D3D11LegacyGregoryPatchTable();
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Far::PatchTable::VertexValenceTable const &
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valenceTable = farPatchTable->GetVertexValenceTable();
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Far::PatchTable::QuadOffsetsTable const &
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quadOffsetsTable = farPatchTable->GetQuadOffsetsTable();
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if (! valenceTable.empty()) {
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D3D11_BUFFER_DESC bd;
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bd.ByteWidth = UINT(valenceTable.size() * sizeof(unsigned int));
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bd.Usage = D3D11_USAGE_DEFAULT;
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bd.BindFlags = D3D11_BIND_SHADER_RESOURCE;
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bd.CPUAccessFlags = 0;
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bd.MiscFlags = 0;
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bd.StructureByteStride = sizeof(unsigned int);
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D3D11_SUBRESOURCE_DATA initData;
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initData.pSysMem = &valenceTable[0];
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HRESULT hr = pd3d11Device->CreateBuffer(&bd, &initData,
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&result->_vertexValenceBuffer);
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if (FAILED(hr)) {
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delete result;
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return NULL;
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}
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D3D11_SHADER_RESOURCE_VIEW_DESC srvd;
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ZeroMemory(&srvd, sizeof(srvd));
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srvd.Format = DXGI_FORMAT_R32_SINT;
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srvd.ViewDimension = D3D11_SRV_DIMENSION_BUFFER;
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srvd.Buffer.FirstElement = 0;
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srvd.Buffer.NumElements = UINT(valenceTable.size());
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hr = pd3d11Device->CreateShaderResourceView(
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result->_vertexValenceBuffer, &srvd,
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&result->_vertexValenceSRV);
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if (FAILED(hr)) {
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delete result;
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return NULL;
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}
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}
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if (! quadOffsetsTable.empty()) {
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D3D11_BUFFER_DESC bd;
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bd.ByteWidth = UINT(quadOffsetsTable.size() * sizeof(unsigned int));
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bd.Usage = D3D11_USAGE_DEFAULT;
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bd.BindFlags = D3D11_BIND_SHADER_RESOURCE;
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bd.CPUAccessFlags = 0;
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bd.MiscFlags = 0;
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bd.StructureByteStride = sizeof(unsigned int);
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D3D11_SUBRESOURCE_DATA initData;
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initData.pSysMem = &quadOffsetsTable[0];
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HRESULT hr = pd3d11Device->CreateBuffer(&bd, &initData,
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&result->_quadOffsetsBuffer);
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if (FAILED(hr)) {
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delete result;
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return NULL;
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}
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D3D11_SHADER_RESOURCE_VIEW_DESC srvd;
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ZeroMemory(&srvd, sizeof(srvd));
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srvd.Format = DXGI_FORMAT_R32_SINT;
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srvd.ViewDimension = D3D11_SRV_DIMENSION_BUFFER;
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srvd.Buffer.FirstElement = 0;
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srvd.Buffer.NumElements = UINT(quadOffsetsTable.size());
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hr = pd3d11Device->CreateShaderResourceView(
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result->_quadOffsetsBuffer, &srvd, &result->_quadOffsetsSRV);
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if (FAILED(hr)) {
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delete result;
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return NULL;
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}
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}
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result->_quadOffsetsBase[0] = 0;
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result->_quadOffsetsBase[1] = 0;
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// scan patchtable to find quadOffsetsBase.
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for (int i = 0; i < farPatchTable->GetNumPatchArrays(); ++i) {
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// GREGORY_BOUNDARY's quadoffsets come after GREGORY's.
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if (farPatchTable->GetPatchArrayDescriptor(i) ==
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Far::PatchDescriptor::GREGORY) {
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result->_quadOffsetsBase[1] = farPatchTable->GetNumPatches(i) * 4;
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break;
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}
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}
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return result;
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}
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void
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D3D11LegacyGregoryPatchTable::UpdateVertexBuffer(
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ID3D11Buffer *vbo, int numVertices, int numVertexElements,
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ID3D11DeviceContext *pd3d11DeviceContext) {
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ID3D11Device *pd3d11Device = NULL;
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pd3d11DeviceContext->GetDevice(&pd3d11Device);
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assert(pd3d11Device);
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D3D11_SHADER_RESOURCE_VIEW_DESC srvd;
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ZeroMemory(&srvd, sizeof(srvd));
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srvd.Format = DXGI_FORMAT_R32_FLOAT;
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srvd.ViewDimension = D3D11_SRV_DIMENSION_BUFFER;
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srvd.Buffer.FirstElement = 0;
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srvd.Buffer.NumElements = numVertices * numVertexElements;
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HRESULT hr = pd3d11Device->CreateShaderResourceView(vbo, &srvd,
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&_vertexSRV);
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if (FAILED(hr)) {
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return;
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}
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}
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} // end namespace Osd
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} // end namespace OPENSUBDIV_VERSION
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} // end namespace OpenSubdiv
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