1 | #include "RenderState.h"
|
---|
2 | #include "Geometry.h"
|
---|
3 | #include "Material.h"
|
---|
4 | #include "ShaderProgram.h"
|
---|
5 | #include "Texture.h"
|
---|
6 |
|
---|
7 | using namespace std;
|
---|
8 |
|
---|
9 | namespace CHCDemoEngine
|
---|
10 | {
|
---|
11 |
|
---|
12 | CGprofile RenderState::sCgFragmentProfile;
|
---|
13 | CGprofile RenderState::sCgVertexProfile;
|
---|
14 |
|
---|
15 | ShaderProgram *RenderState::sCgMrtFragmentProgram = NULL;
|
---|
16 | ShaderProgram *RenderState::sCgMrtFragmentTexProgram = NULL;
|
---|
17 | ShaderProgram *RenderState::sCgMrtVertexProgram = NULL;
|
---|
18 |
|
---|
19 |
|
---|
20 | int RenderState::sTexParam;
|
---|
21 |
|
---|
22 |
|
---|
23 |
|
---|
24 | /////////////////
|
---|
25 |
|
---|
26 | RenderState::RenderState():
|
---|
27 | mAlphaTestEnabled(false),
|
---|
28 | mCullFaceEnabled(true),
|
---|
29 | mTexturesEnabled(false),
|
---|
30 | mMode(RENDER),
|
---|
31 | mRenderType(FIXED),
|
---|
32 | mUseAlphaToCoverage(true),
|
---|
33 | mLockCullFaceEnabled(false)
|
---|
34 | {
|
---|
35 | Reset();
|
---|
36 | }
|
---|
37 |
|
---|
38 |
|
---|
39 | bool RenderState::SetMode(Mode mode)
|
---|
40 | {
|
---|
41 | ///////////
|
---|
42 | //-- just change the modewhen necessary
|
---|
43 |
|
---|
44 | if (mode == mMode) return false;
|
---|
45 |
|
---|
46 | mMode = mode;
|
---|
47 |
|
---|
48 | if (mode == QUERY)
|
---|
49 | {
|
---|
50 | if (mRenderType != DEPTH_PASS)
|
---|
51 | {
|
---|
52 | glDisable(GL_LIGHTING);
|
---|
53 | glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
|
---|
54 |
|
---|
55 | if (mRenderType == DEFERRED)
|
---|
56 | {
|
---|
57 | cgGLDisableProfile(sCgFragmentProfile);
|
---|
58 | cgGLDisableProfile(sCgVertexProfile);
|
---|
59 | }
|
---|
60 | }
|
---|
61 |
|
---|
62 | glDepthMask(GL_FALSE);
|
---|
63 |
|
---|
64 | SetState(false, false, false);
|
---|
65 | }
|
---|
66 | else // mode returns to render
|
---|
67 | {
|
---|
68 | /////////////
|
---|
69 | //-- restore render state
|
---|
70 |
|
---|
71 | if (mRenderType != DEPTH_PASS)
|
---|
72 | {
|
---|
73 | glEnable(GL_LIGHTING);
|
---|
74 | glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
|
---|
75 |
|
---|
76 | if (mRenderType == DEFERRED)
|
---|
77 | {
|
---|
78 | cgGLEnableProfile(sCgFragmentProfile);
|
---|
79 | cgGLEnableProfile(sCgVertexProfile);
|
---|
80 | }
|
---|
81 | }
|
---|
82 |
|
---|
83 | glDepthMask(GL_TRUE);
|
---|
84 | }
|
---|
85 |
|
---|
86 | return true;
|
---|
87 | }
|
---|
88 |
|
---|
89 |
|
---|
90 | void RenderState::SetState(Texture *tex, bool alphaTest, bool cullFace)
|
---|
91 | {
|
---|
92 | const bool texturing = (tex != NULL);
|
---|
93 |
|
---|
94 | if (!mLockCullFaceEnabled)
|
---|
95 | {
|
---|
96 | if (mCullFaceEnabled && !cullFace)
|
---|
97 | {
|
---|
98 | mCullFaceEnabled = false;
|
---|
99 | glDisable(GL_CULL_FACE);
|
---|
100 | }
|
---|
101 | else if (!mCullFaceEnabled && cullFace)
|
---|
102 | {
|
---|
103 | mCullFaceEnabled = true;
|
---|
104 | glEnable(GL_CULL_FACE);
|
---|
105 | }
|
---|
106 | }
|
---|
107 | if (mAlphaTestEnabled && !alphaTest)
|
---|
108 | {
|
---|
109 | mAlphaTestEnabled = false;
|
---|
110 |
|
---|
111 | if (mUseAlphaToCoverage)
|
---|
112 | glDisable(GL_SAMPLE_ALPHA_TO_COVERAGE_ARB);
|
---|
113 | else
|
---|
114 | glDisable(GL_ALPHA_TEST);
|
---|
115 | }
|
---|
116 | else if (!mAlphaTestEnabled && alphaTest)
|
---|
117 | {
|
---|
118 | mAlphaTestEnabled = true;
|
---|
119 |
|
---|
120 | if (mUseAlphaToCoverage)
|
---|
121 | glEnable(GL_SAMPLE_ALPHA_TO_COVERAGE_ARB);
|
---|
122 | else
|
---|
123 | glEnable(GL_ALPHA_TEST);
|
---|
124 | }
|
---|
125 |
|
---|
126 | if (mTexturesEnabled &&
|
---|
127 | (!texturing || (mRenderType == DEPTH_PASS) && !mAlphaTestEnabled))
|
---|
128 | {
|
---|
129 | mTexturesEnabled = false;
|
---|
130 |
|
---|
131 | if (mRenderType == DEFERRED)
|
---|
132 | sCgMrtFragmentProgram->Bind();
|
---|
133 | else
|
---|
134 | glDisable(GL_TEXTURE_2D);
|
---|
135 |
|
---|
136 | glDisableClientState(GL_TEXTURE_COORD_ARRAY);
|
---|
137 | }
|
---|
138 | else if (!mTexturesEnabled && texturing)
|
---|
139 | {
|
---|
140 | // support only alpha textures in depth pass
|
---|
141 | if ((mRenderType != DEPTH_PASS) || mAlphaTestEnabled)
|
---|
142 | {
|
---|
143 | mTexturesEnabled = true;
|
---|
144 |
|
---|
145 | if (mRenderType == DEFERRED)
|
---|
146 | sCgMrtFragmentTexProgram->Bind();
|
---|
147 | else
|
---|
148 | glEnable(GL_TEXTURE_2D);
|
---|
149 |
|
---|
150 | glEnableClientState(GL_TEXTURE_COORD_ARRAY);
|
---|
151 | }
|
---|
152 | }
|
---|
153 |
|
---|
154 | SetTexture(tex);
|
---|
155 | }
|
---|
156 |
|
---|
157 |
|
---|
158 | void RenderState::Reset()
|
---|
159 | {
|
---|
160 | mCurrentVboId = -1;
|
---|
161 |
|
---|
162 | mCullFaceEnabled = true;
|
---|
163 | glEnable(GL_CULL_FACE);
|
---|
164 |
|
---|
165 | mAlphaTestEnabled = false;
|
---|
166 |
|
---|
167 | glDisable(GL_SAMPLE_ALPHA_TO_COVERAGE_ARB);
|
---|
168 | glDisable(GL_ALPHA_TEST);
|
---|
169 |
|
---|
170 | mTexturesEnabled = false;
|
---|
171 |
|
---|
172 | glDisable(GL_TEXTURE_2D);
|
---|
173 | glDisableClientState(GL_TEXTURE_COORD_ARRAY);
|
---|
174 |
|
---|
175 | SetMode(RENDER);
|
---|
176 | }
|
---|
177 |
|
---|
178 |
|
---|
179 | void RenderState::SetUseAlphaToCoverage(bool useAlphaToCoverage)
|
---|
180 | {
|
---|
181 | mUseAlphaToCoverage = useAlphaToCoverage;
|
---|
182 | }
|
---|
183 |
|
---|
184 |
|
---|
185 | void RenderState::SetRenderPassType(RenderPassType t)
|
---|
186 | {
|
---|
187 | mRenderType = t;
|
---|
188 | }
|
---|
189 |
|
---|
190 |
|
---|
191 | RenderState::RenderPassType RenderState::GetRenderPassType() const
|
---|
192 | {
|
---|
193 | return mRenderType;
|
---|
194 | }
|
---|
195 |
|
---|
196 |
|
---|
197 | void RenderState::LockCullFaceEnabled(bool lockCull)
|
---|
198 | {
|
---|
199 | mLockCullFaceEnabled = lockCull;
|
---|
200 | }
|
---|
201 |
|
---|
202 |
|
---|
203 | void RenderState::SetTexture(Texture *tex)
|
---|
204 | {
|
---|
205 | if (GetRenderPassType() == RenderState::DEFERRED)
|
---|
206 | {
|
---|
207 | if (tex)
|
---|
208 | RenderState::sCgMrtFragmentTexProgram->SetTexture("tex", tex->GetId());
|
---|
209 | }
|
---|
210 | else
|
---|
211 | {
|
---|
212 | if (tex)
|
---|
213 | tex->Bind();
|
---|
214 | else
|
---|
215 | glBindTexture(GL_TEXTURE_2D, 0);
|
---|
216 | }
|
---|
217 | }
|
---|
218 |
|
---|
219 |
|
---|
220 | } |
---|