[2769] | 1 | #include "RenderState.h"
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| 2 | #include "Geometry.h"
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| 3 | #include "Material.h"
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| 4 |
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[2861] | 5 | using namespace std;
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[2769] | 6 |
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[2776] | 7 | namespace CHCDemoEngine
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[2769] | 8 | {
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| 9 |
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[2818] | 10 | CGprofile RenderState::sCgFragmentProfile;
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| 11 | CGprofile RenderState::sCgVertexProfile;
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[2769] | 12 |
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[2819] | 13 | CGprogram RenderState::sCgMrtFragmentProgram = NULL;
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| 14 | CGprogram RenderState::sCgMrtFragmentTexProgram = NULL;
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[2964] | 15 | CGparameter RenderState::sTexParam;
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[2818] | 16 |
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[2819] | 17 |
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[2964] | 18 |
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[2825] | 19 | /////////////////
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| 20 |
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[2769] | 21 | RenderState::RenderState():
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[2773] | 22 | mAlphaTestEnabled(false),
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[2844] | 23 | mCullFaceEnabled(true),
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[2773] | 24 | mTexturesEnabled(false),
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[2801] | 25 | mMode(RENDER),
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[2943] | 26 | mRenderType(FIXED),
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[2955] | 27 | mUseAlphaToCoverage(true),
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| 28 | mLockCullFaceEnabled(false)
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[2769] | 29 | {
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| 30 | Reset();
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| 31 | }
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| 32 |
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| 33 |
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| 34 | bool RenderState::SetState(Mode mode)
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| 35 | {
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[2800] | 36 | ///////////
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[2769] | 37 | //-- just change the modewhen necessary
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[2800] | 38 |
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[2769] | 39 | if (mode == mMode) return false;
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| 40 |
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| 41 | mMode = mode;
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| 42 |
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| 43 | if (mode == QUERY)
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| 44 | {
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[2825] | 45 | if (mRenderType != DEPTH_PASS)
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[2801] | 46 | {
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| 47 | glDisable(GL_LIGHTING);
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| 48 | glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
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[2818] | 49 |
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[2825] | 50 | if (mRenderType == DEFERRED)
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| 51 | {
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| 52 | cgGLDisableProfile(sCgFragmentProfile);
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| 53 | cgGLDisableProfile(sCgVertexProfile);
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| 54 | }
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[2801] | 55 | }
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| 56 |
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[2769] | 57 | glDepthMask(GL_FALSE);
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| 58 |
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[2844] | 59 | SetState(false, false, false);
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[2769] | 60 | }
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| 61 | else // mode returns to render
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| 62 | {
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| 63 | /////////////
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| 64 | //-- restore render state
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| 65 |
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[2825] | 66 | if (mRenderType != DEPTH_PASS)
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[2801] | 67 | {
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| 68 | glEnable(GL_LIGHTING);
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| 69 | glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
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[2818] | 70 |
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[2825] | 71 | if (mRenderType == DEFERRED)
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| 72 | {
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| 73 | cgGLEnableProfile(sCgFragmentProfile);
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| 74 | cgGLEnableProfile(sCgVertexProfile);
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| 75 | }
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[2801] | 76 | }
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| 77 |
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[2769] | 78 | glDepthMask(GL_TRUE);
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| 79 | }
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| 80 |
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| 81 | return true;
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| 82 | }
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| 83 |
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| 84 |
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[2844] | 85 | void RenderState::SetState(bool texturing, bool alphaTest, bool cullFace)
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[2769] | 86 | {
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[2955] | 87 | if (!mLockCullFaceEnabled)
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[2844] | 88 | {
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[2955] | 89 | if (mCullFaceEnabled && !cullFace)
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| 90 | {
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| 91 | mCullFaceEnabled = false;
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| 92 | glDisable(GL_CULL_FACE);
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| 93 | }
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| 94 | else if (!mCullFaceEnabled && cullFace)
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| 95 | {
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| 96 | mCullFaceEnabled = true;
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| 97 | glEnable(GL_CULL_FACE);
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| 98 | }
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[2844] | 99 | }
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[2769] | 100 | if (mAlphaTestEnabled && !alphaTest)
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| 101 | {
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| 102 | mAlphaTestEnabled = false;
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[2851] | 103 |
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[2950] | 104 | if (mUseAlphaToCoverage)
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[2943] | 105 | glDisable(GL_SAMPLE_ALPHA_TO_COVERAGE_ARB);
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[2950] | 106 | else
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[2943] | 107 | glDisable(GL_ALPHA_TEST);
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[2769] | 108 | }
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| 109 | else if (!mAlphaTestEnabled && alphaTest)
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| 110 | {
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| 111 | mAlphaTestEnabled = true;
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[2851] | 112 |
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[2950] | 113 | if (mUseAlphaToCoverage)
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[2943] | 114 | glEnable(GL_SAMPLE_ALPHA_TO_COVERAGE_ARB);
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| 115 | else
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| 116 | glEnable(GL_ALPHA_TEST);
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[2769] | 117 | }
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[2801] | 118 |
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| 119 | if (mTexturesEnabled &&
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[2825] | 120 | (!texturing || (mRenderType == DEPTH_PASS) && !mAlphaTestEnabled))
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[2801] | 121 | {
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| 122 | mTexturesEnabled = false;
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[2819] | 123 |
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[2825] | 124 | if (mRenderType == DEFERRED)
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| 125 | cgGLBindProgram(sCgMrtFragmentProgram);
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[2819] | 126 |
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[2801] | 127 | glDisable(GL_TEXTURE_2D);
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| 128 | glDisableClientState(GL_TEXTURE_COORD_ARRAY);
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| 129 | }
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| 130 | else if (!mTexturesEnabled && texturing)
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| 131 | {
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[2825] | 132 | // support only alpha textures in depth pass
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| 133 | if ((mRenderType != DEPTH_PASS) || mAlphaTestEnabled)
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[2801] | 134 | {
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| 135 | mTexturesEnabled = true;
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[2819] | 136 |
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[2825] | 137 | if (mRenderType == DEFERRED)
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| 138 | cgGLBindProgram(sCgMrtFragmentTexProgram);
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[2819] | 139 |
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[2801] | 140 | glEnable(GL_TEXTURE_2D);
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| 141 | glEnableClientState(GL_TEXTURE_COORD_ARRAY);
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| 142 | }
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| 143 | }
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[2769] | 144 | }
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| 145 |
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| 146 |
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| 147 | void RenderState::Reset()
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| 148 | {
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[2773] | 149 | mCurrentVboId = -1;
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[2825] | 150 |
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[2955] | 151 | mCullFaceEnabled = true;
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| 152 | glEnable(GL_CULL_FACE);
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| 153 |
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| 154 | mAlphaTestEnabled = false;
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| 155 |
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| 156 | glDisable(GL_SAMPLE_ALPHA_TO_COVERAGE_ARB);
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| 157 | glDisable(GL_ALPHA_TEST);
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| 158 |
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| 159 | mTexturesEnabled = false;
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| 160 |
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| 161 | glDisable(GL_TEXTURE_2D);
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| 162 | glDisableClientState(GL_TEXTURE_COORD_ARRAY);
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| 163 |
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[2769] | 164 | SetState(RENDER);
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| 165 | }
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| 166 |
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| 167 |
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[2943] | 168 | void RenderState::SetUseAlphaToCoverage(bool useAlphaToCoverage)
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| 169 | {
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| 170 | mUseAlphaToCoverage = useAlphaToCoverage;
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| 171 | }
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| 172 |
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| 173 |
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[2955] | 174 | void RenderState::SetRenderPassType(RenderPassType t)
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| 175 | {
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| 176 | mRenderType = t;
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| 177 | }
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| 178 |
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| 179 |
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| 180 | RenderState::RenderPassType RenderState::GetRenderPassType() const
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| 181 | {
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| 182 | return mRenderType;
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| 183 | }
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| 184 |
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| 185 |
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| 186 | void RenderState::LockCullFaceEnabled(bool lockCull)
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| 187 | {
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| 188 | mLockCullFaceEnabled = lockCull;
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| 189 | }
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| 190 |
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| 191 |
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[2769] | 192 | } |
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