1 //
2 // Copyright (c) 2008-2017 the Urho3D project.
3 //
4 // Permission is hereby granted, free of charge, to any person obtaining a copy
5 // of this software and associated documentation files (the "Software"), to deal
6 // in the Software without restriction, including without limitation the rights
7 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 // copies of the Software, and to permit persons to whom the Software is
9 // furnished to do so, subject to the following conditions:
10 //
11 // The above copyright notice and this permission notice shall be included in
12 // all copies or substantial portions of the Software.
13 //
14 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
20 // THE SOFTWARE.
21 //
22
23 #include "../../Precompiled.h"
24
25 #include "../../Graphics/Graphics.h"
26 #include "../../Graphics/GraphicsImpl.h"
27
28 #include "../../DebugNew.h"
29
30 namespace Urho3D
31 {
32
GraphicsImpl()33 GraphicsImpl::GraphicsImpl() :
34 device_(0),
35 deviceContext_(0),
36 swapChain_(0),
37 defaultRenderTargetView_(0),
38 defaultDepthTexture_(0),
39 defaultDepthStencilView_(0),
40 depthStencilView_(0),
41 resolveTexture_(0),
42 shaderProgram_(0)
43 {
44 for (unsigned i = 0; i < MAX_RENDERTARGETS; ++i)
45 renderTargetViews_[i] = 0;
46
47 for (unsigned i = 0; i < MAX_TEXTURE_UNITS; ++i)
48 {
49 shaderResourceViews_[i] = 0;
50 samplers_[i] = 0;
51 }
52
53 for (unsigned i = 0; i < MAX_VERTEX_STREAMS; ++i)
54 {
55 vertexBuffers_[i] = 0;
56 vertexSizes_[i] = 0;
57 vertexOffsets_[i] = 0;
58 }
59
60 for (unsigned i = 0; i < MAX_SHADER_PARAMETER_GROUPS; ++i)
61 {
62 constantBuffers_[VS][i] = 0;
63 constantBuffers_[PS][i] = 0;
64 }
65 }
66
CheckMultiSampleSupport(DXGI_FORMAT format,unsigned sampleCount) const67 bool GraphicsImpl::CheckMultiSampleSupport(DXGI_FORMAT format, unsigned sampleCount) const
68 {
69 if (sampleCount < 2)
70 return true; // Not multisampled
71
72 UINT numLevels = 0;
73 if (FAILED(device_->CheckMultisampleQualityLevels(format, sampleCount, &numLevels)))
74 return false;
75 else
76 return numLevels > 0;
77 }
78
GetMultiSampleQuality(DXGI_FORMAT format,unsigned sampleCount) const79 unsigned GraphicsImpl::GetMultiSampleQuality(DXGI_FORMAT format, unsigned sampleCount) const
80 {
81 if (sampleCount < 2)
82 return 0; // Not multisampled, should use quality 0
83
84 if (device_->GetFeatureLevel() >= D3D_FEATURE_LEVEL_10_1)
85 return 0xffffffff; // D3D10.1+ standard level
86
87 UINT numLevels = 0;
88 if (FAILED(device_->CheckMultisampleQualityLevels(format, sampleCount, &numLevels)) || !numLevels)
89 return 0; // Errored or sample count not supported
90 else
91 return numLevels - 1; // D3D10.0 and below: use the best quality
92 }
93
94 }
95