[3030] | 1 | #include "ShaderProgram.h"
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| 2 | #include "Matrix4x4.h"
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[3041] | 3 | #include "Timer/PerfTimer.h"
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[3045] | 4 | #include "Vector3.h"
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| 5 | #include "Camera.h"
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[3046] | 6 | #include "Light.h"
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[3030] | 7 |
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| 8 |
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| 9 | using namespace std;
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| 10 |
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| 11 | namespace CHCDemoEngine
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| 12 | {
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| 13 |
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[3045] | 14 | //////////
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| 15 | //-- changing shader parameters
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[3046] | 16 |
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[3043] | 17 | static float sCurrentTimer = 0;
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[3045] | 18 | static Matrix4x4 sCurrentViewMatrix = IdentityMatrix();
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[3046] | 19 | static Vector3 sCurrentViewDir = Vector3::UNIT_Y();
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| 20 | static Vector3 sCurrentLightDir = Vector3::UNIT_Y();
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[3030] | 21 |
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[3043] | 22 |
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[3046] | 23 | /*********************************************************/
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| 24 | /* GPUProgramParameters implementation */
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| 25 | /*********************************************************/
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| 26 |
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| 27 |
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[3045] | 28 | GPUProgramParameters::GPUProgramParameters(ShaderProgram *p):
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| 29 | mProgram(p),
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| 30 | mTimerParam(-1),
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[3046] | 31 | mViewDirParam(-1),
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| 32 | mViewMatrixParam(-1),
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| 33 | mLightDirParam(-1)
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[3033] | 34 | {
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| 35 | }
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| 36 |
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[3036] | 37 |
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[3045] | 38 | GPUProgramParameters::GPUProgramParameters():
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| 39 | mProgram(NULL),
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| 40 | mTimerParam(-1),
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[3046] | 41 | mViewDirParam(-1),
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| 42 | mViewMatrixParam(-1),
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| 43 | mLightDirParam(-1)
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[3045] | 44 | {
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| 45 | }
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| 46 |
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| 47 |
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[3036] | 48 | void GPUProgramParameters::Reset()
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| 49 | {
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| 50 | mFloats.clear();
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| 51 | mTextures.clear();
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| 52 | mMatrices.clear();
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| 53 | mArrays.clear();
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[3041] | 54 |
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[3045] | 55 | mTimerParam = -1;
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[3046] | 56 | mViewDirParam = -1;
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| 57 | mLightDirParam = -1;
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[3045] | 58 | mViewMatrixParam = -1;
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[3036] | 59 | }
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| 60 |
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| 61 |
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[3033] | 62 | void GPUProgramParameters::SetValue1f(int idx, float value)
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| 63 | {
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[3036] | 64 | if (mFloats.size() < idx + 1)
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| 65 | mFloats.resize(idx + 1);
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| 66 |
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| 67 | mFloats[idx] = FloatParam(&value, 1);
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[3033] | 68 | }
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| 69 |
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| 70 |
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| 71 | void GPUProgramParameters::SetValue2f(int idx, float val1, float val2)
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| 72 | {
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[3036] | 73 | if (mFloats.size() < idx + 1)
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| 74 | mFloats.resize(idx + 1);
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| 75 |
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| 76 | float vals[] = {val1, val2};
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| 77 |
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| 78 | mFloats[idx] = FloatParam(vals, 2);
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[3033] | 79 | }
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| 80 |
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| 81 |
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[3036] | 82 | void GPUProgramParameters::SetValue3f(int idx, float val1, float val2, float val3)
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[3033] | 83 | {
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[3036] | 84 | if (mFloats.size() < idx + 1)
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| 85 | mFloats.resize(idx + 1);
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| 86 |
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| 87 | float vals[] = {val1, val2, val3};
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| 88 |
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| 89 | mFloats[idx] = FloatParam(vals, 3);
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[3033] | 90 | }
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| 91 |
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| 92 |
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| 93 | void GPUProgramParameters::SetArray1f(int idx, float *vals, int numElements)
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| 94 | {
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[3036] | 95 | if (mArrays.size() < idx + 1)
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| 96 | mArrays.resize(idx + 1);
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| 97 |
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| 98 | mArrays[idx] = ArrayParam(vals, 1, numElements);
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[3033] | 99 | }
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| 100 |
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| 101 |
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| 102 | void GPUProgramParameters::SetArray2f(int idx, float *vals, int numElements)
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| 103 | {
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[3036] | 104 | if (mArrays.size() < idx + 1)
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| 105 | mArrays.resize(idx + 1);
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| 106 |
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| 107 | mArrays[idx] = ArrayParam(vals, 2, numElements);
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[3033] | 108 | }
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| 109 |
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| 110 |
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| 111 | void GPUProgramParameters::SetArray3f(int idx, float *vals, int numElements)
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| 112 | {
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[3036] | 113 | if (mArrays.size() < idx + 1)
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| 114 | mArrays.resize(idx + 1);
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| 115 |
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| 116 | mArrays[idx] = ArrayParam(vals, 3, numElements);
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[3033] | 117 | }
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| 118 |
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| 119 |
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| 120 | void GPUProgramParameters::SetTexture(int idx, unsigned int tex)
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| 121 | {
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[3036] | 122 | if (mTextures.size() < idx + 1)
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| 123 | mTextures.resize(idx + 1);
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| 124 |
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| 125 | mTextures[idx] = IntParam(tex);
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[3033] | 126 | }
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| 127 |
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| 128 |
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| 129 | void GPUProgramParameters::SetMatrix(int idx, Matrix4x4 *mat)
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| 130 | {
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[3036] | 131 | if (mMatrices.size() < idx + 1)
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| 132 | mMatrices.resize(idx + 1);
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| 133 |
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| 134 | mMatrices[idx] = MatrixParam(mat);
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[3033] | 135 | }
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| 136 |
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| 137 |
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[3041] | 138 | void GPUProgramParameters::SetTimerParam(int idx)
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| 139 | {
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[3045] | 140 | mTimerParam = idx;
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[3041] | 141 | }
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| 142 |
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| 143 |
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[3045] | 144 | void GPUProgramParameters::SetViewMatrixParam(int idx)
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| 145 | {
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| 146 | mViewMatrixParam = idx;
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| 147 | }
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| 148 |
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| 149 |
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[3046] | 150 | void GPUProgramParameters::SetViewDirParam(int idx)
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[3045] | 151 | {
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[3046] | 152 | mViewDirParam = idx;
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[3045] | 153 | }
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| 154 |
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| 155 |
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[3046] | 156 | void GPUProgramParameters::SetLightDirParam(int idx)
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| 157 | {
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| 158 | mLightDirParam = idx;
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| 159 | }
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| 160 |
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| 161 |
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[3033] | 162 | void GPUProgramParameters::SetValue1f(const string &name, float val)
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| 163 | {
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[3034] | 164 | SetValue1f(mProgram->GetParamIdxByName(name), val);
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[3033] | 165 | }
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| 166 |
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| 167 |
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[3034] | 168 | void GPUProgramParameters::SetValue2f(const string &name, float val1, float val2)
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[3033] | 169 | {
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[3034] | 170 | SetValue2f(mProgram->GetParamIdxByName(name), val1, val2);
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[3033] | 171 | }
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| 172 |
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| 173 |
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| 174 | void GPUProgramParameters::SetValue3f(const string &name, float val1, float val2, float val3)
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| 175 | {
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[3034] | 176 | SetValue3f(mProgram->GetParamIdxByName(name), val1, val2, val3);
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[3033] | 177 | }
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| 178 |
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| 179 |
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| 180 | void GPUProgramParameters::SetArray1f(const string &name, float *vals, int numElements)
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| 181 | {
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[3034] | 182 | SetArray1f(mProgram->GetParamIdxByName(name), vals, numElements);
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[3033] | 183 | }
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| 184 |
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| 185 |
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[3034] | 186 | void GPUProgramParameters::SetArray2f(const string &name, float *vals, int numElements)
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[3033] | 187 | {
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[3034] | 188 | SetArray2f(mProgram->GetParamIdxByName(name), vals, numElements);
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[3033] | 189 | }
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| 190 |
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| 191 |
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| 192 | void GPUProgramParameters::SetArray3f(const string &name, float *vals, int numElements)
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| 193 | {
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[3034] | 194 | SetArray3f(mProgram->GetParamIdxByName(name), vals, numElements);
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[3033] | 195 | }
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| 196 |
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| 197 |
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| 198 | void GPUProgramParameters::SetMatrix(const string &name, Matrix4x4 *mat)
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| 199 | {
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[3034] | 200 | SetMatrix(mProgram->GetParamIdxByName(name), mat);
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[3033] | 201 | }
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| 202 |
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| 203 |
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| 204 | void GPUProgramParameters::SetTexture(const string &name, unsigned int tex)
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| 205 | {
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[3034] | 206 | SetTexture(mProgram->GetParamIdxByName(name), tex);
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[3033] | 207 | }
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| 208 |
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| 209 |
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[3034] | 210 | void GPUProgramParameters::UpdateParameters()
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| 211 | {
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[3045] | 212 | if (!mProgram) return;
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| 213 |
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[3036] | 214 | for (int i = 0; i < (int)mFloats.size(); ++ i)
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[3034] | 215 | {
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| 216 | const FloatParam &p = mFloats[i];
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| 217 |
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[3036] | 218 | if (!p.mValid) continue;
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| 219 |
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[3034] | 220 | switch (p.mNumComponents)
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| 221 | {
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| 222 | case 1:
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[3036] | 223 | mProgram->SetValue1f(i, p.mValues[0]);
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[3034] | 224 | break;
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| 225 | case 2:
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[3036] | 226 | mProgram->SetValue2f(i, p.mValues[0], p.mValues[1]);
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[3034] | 227 | break;
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| 228 | case 3:
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[3036] | 229 | mProgram->SetValue3f(i, p.mValues[0], p.mValues[1], p.mValues[2]);
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[3034] | 230 | break;
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| 231 | default:
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[3036] | 232 | mProgram->SetValue1f(i, p.mValues[0]);
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[3034] | 233 | }
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| 234 | }
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| 235 |
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[3036] | 236 | for (int i = 0; i < (int)mTextures.size(); ++ i)
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[3034] | 237 | {
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| 238 | const IntParam &p = mTextures[i];
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[3036] | 239 |
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| 240 | if (p.mValid)
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| 241 | mProgram->SetTexture(i, p.mValue);
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[3034] | 242 | }
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| 243 |
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[3036] | 244 | for (int i = 0; i < (int)mMatrices.size(); ++ i)
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[3034] | 245 | {
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| 246 | const MatrixParam &p = mMatrices[i];
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[3036] | 247 |
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| 248 | if (p.mValid)
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| 249 | mProgram->SetMatrix(i, *p.mValue);
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[3034] | 250 | }
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[3036] | 251 |
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| 252 | for (int i = 0; i < (int)mArrays.size(); ++ i)
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| 253 | {
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| 254 | const ArrayParam &p = mArrays[i];
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| 255 |
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| 256 | if (!p.mValid) continue;
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| 257 |
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| 258 | switch (p.mNumComponents)
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| 259 | {
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| 260 | case 1:
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| 261 | mProgram->SetArray1f(i, p.mValues, p.mNumEntries);
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| 262 | break;
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| 263 | case 2:
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| 264 | mProgram->SetArray2f(i, p.mValues, p.mNumEntries);
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| 265 | break;
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| 266 | case 3:
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| 267 | mProgram->SetArray3f(i, p.mValues, p.mNumEntries);
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| 268 | break;
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| 269 | default:
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| 270 | mProgram->SetArray1f(i, p.mValues, p.mNumEntries);
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| 271 | }
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| 272 | }
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[3041] | 273 |
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[3045] | 274 | if (mTimerParam >= 0)
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| 275 | mProgram->SetValue1f(mTimerParam, sCurrentTimer);
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| 276 |
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[3046] | 277 | if (mViewDirParam >= 0)
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| 278 | mProgram->SetValue3f(mViewDirParam, sCurrentViewDir.x, sCurrentViewDir.y, sCurrentViewDir.z);
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| 279 | if (mLightDirParam >= 0)
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| 280 | mProgram->SetValue3f(mLightDirParam, sCurrentLightDir.x, sCurrentLightDir.y, sCurrentLightDir.z);
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[3045] | 281 | if (mViewMatrixParam >= 0)
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| 282 | mProgram->SetMatrix(mViewMatrixParam, sCurrentViewMatrix);
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[3034] | 283 | }
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| 284 |
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| 285 |
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[3046] | 286 | void GPUProgramParameters::InitFrame(Camera *cam, DirectionalLight *light)
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[3043] | 287 | {
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| 288 | static PerfTimer mytimer;
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| 289 | sCurrentTimer = mytimer.Elapsedms(false) * M_PI / 180.0f;
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[3045] | 290 |
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| 291 | cam->GetModelViewMatrix(sCurrentViewMatrix);
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[3046] | 292 | sCurrentViewDir = cam->GetDirection();
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| 293 |
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| 294 | Matrix4x4 vo;
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| 295 | // transform to view space
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| 296 | cam->GetViewOrientationMatrix(vo);
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| 297 | //sCurrentLightDir = /*vo **/ -light->GetDirection();
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| 298 | sCurrentLightDir = vo * -light->GetDirection();
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[3043] | 299 | }
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[3034] | 300 |
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[3043] | 301 |
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| 302 |
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[3034] | 303 | /********************************************************/
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| 304 | /* ShaderProgram implementation */
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| 305 | /********************************************************/
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| 306 |
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| 307 |
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[3030] | 308 | ShaderProgram::ShaderProgram(CGcontext context,
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| 309 | const std::string &filename,
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| 310 | CGprofile profile,
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| 311 | const std::string &functionName)
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| 312 | {
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| 313 | mProgram = cgCreateProgramFromFile(context,
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| 314 | CG_SOURCE,
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| 315 | filename.c_str(),
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| 316 | profile,
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| 317 | functionName.c_str(),
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| 318 | NULL);
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| 319 |
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| 320 | if (mProgram) cgGLLoadProgram(mProgram);
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[3033] | 321 |
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[3034] | 322 | const int maxParams = 64;
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| 323 | mParameters.resize(maxParams);
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[3033] | 324 |
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[3034] | 325 | for (int i = 0; i < maxParams; ++ i)
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[3033] | 326 | {
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| 327 | mParameters[i] = NULL;
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| 328 | }
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[3030] | 329 | }
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| 330 |
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| 331 |
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[3033] | 332 | void ShaderProgram::Bind()
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| 333 | {
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| 334 | cgGLBindProgram(mProgram);
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| 335 |
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| 336 | // enable all texture parameters
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| 337 | CGParameterArray::const_iterator it, it_end = mTextureParams.end();
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| 338 |
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| 339 | for (it = mTextureParams.begin(); it != it_end; ++ it)
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| 340 | cgGLEnableTextureParameter(*it);
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| 341 | }
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| 342 |
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| 343 |
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[3046] | 344 | void ShaderProgram::Release()
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[3033] | 345 | {
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| 346 | CGParameterArray::const_iterator it, it_end = mTextureParams.end();
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| 347 |
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| 348 | // disable all texture parameters
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| 349 | for (it = mTextureParams.begin(); it != it_end; ++ it)
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| 350 | cgGLDisableTextureParameter(*it);
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[3046] | 351 | }
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[3033] | 352 |
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| 353 |
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| 354 | CGparameter ShaderProgram::AddParameter(const string &name, int idx)
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| 355 | {
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| 356 | CGparameter p = GetOrCreateParameter(name);
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| 357 |
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[3034] | 358 | mParamHash[name] = idx;
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[3033] | 359 | mParameters[idx] = p;
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[3034] | 360 |
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[3033] | 361 | return p;
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| 362 | }
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| 363 |
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| 364 |
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[3030] | 365 | CGparameter ShaderProgram::GetOrCreateParameter(const string &name)
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| 366 | {
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| 367 | CGparameter p;
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| 368 | CGParameterMap::const_iterator it = mParamHash.find(name);
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| 369 |
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| 370 | if (it == mParamHash.end())
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| 371 | {
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| 372 | p = cgGetNamedParameter(mProgram, name.c_str());
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| 373 | }
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| 374 | else
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| 375 | {
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[3033] | 376 | p = mParameters[(*it).second];
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[3030] | 377 | }
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| 378 |
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| 379 | //cout << "name: " << name << " " << p << " " << mProgram << endl;
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| 380 | return p;
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| 381 | }
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| 382 |
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| 383 |
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[3033] | 384 | CGparameter ShaderProgram::GetParameter(int idx) const
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[3030] | 385 | {
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[3034] | 386 | return mParameters[idx];
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[3030] | 387 | }
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| 388 |
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| 389 |
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[3033] | 390 | void ShaderProgram::SetValue1f(int idx, float val)
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[3030] | 391 | {
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[3033] | 392 | cgGLSetParameter1f(GetParameter(idx), val);
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[3030] | 393 | }
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| 394 |
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| 395 |
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[3033] | 396 | void ShaderProgram::SetValue2f(int idx, float val1, float val2)
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[3030] | 397 | {
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[3033] | 398 | cgGLSetParameter2f(GetParameter(idx), val1, val2);
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[3030] | 399 | }
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| 400 |
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| 401 |
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[3033] | 402 | void ShaderProgram::SetValue3f(int idx, float val1, float val2, float val3)
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[3030] | 403 | {
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[3033] | 404 | cgGLSetParameter3f(GetParameter(idx), val1, val2, val3);
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[3030] | 405 | }
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| 406 |
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| 407 |
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[3033] | 408 | void ShaderProgram::SetArray1f(int idx, float *vals, int numElements)
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[3030] | 409 | {
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[3033] | 410 | cgGLSetParameterArray1f(GetParameter(idx), 0, numElements, (const float *)vals);
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[3030] | 411 | }
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| 412 |
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| 413 |
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[3033] | 414 | void ShaderProgram::SetArray2f(int idx, float *vals, int numElements)
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[3030] | 415 | {
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[3033] | 416 | cgGLSetParameterArray2f(GetParameter(idx), 0, numElements, (const float *)vals);
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[3030] | 417 | }
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| 418 |
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| 419 |
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[3033] | 420 | void ShaderProgram::SetArray3f(int idx, float *vals, int numElements)
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[3030] | 421 | {
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[3033] | 422 | cgGLSetParameterArray3f(GetParameter(idx), 0, numElements, (const float *)vals);
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[3030] | 423 | }
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| 424 |
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| 425 |
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[3033] | 426 | void ShaderProgram::SetMatrix(int idx, const Matrix4x4 &mat)
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[3030] | 427 | {
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[3033] | 428 | cgGLSetMatrixParameterfc(GetParameter(idx), (const float *)mat.x);
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| 429 | }
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[3030] | 430 |
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[3033] | 431 |
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| 432 | void ShaderProgram::SetTexture(int idx, unsigned int tex)
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| 433 | {
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| 434 | CGparameter p = GetParameter(idx);
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| 435 |
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[3030] | 436 | cgGLSetTextureParameter(p, tex);
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[3031] | 437 | cgGLEnableTextureParameter(p);
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[3034] | 438 | }
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[3031] | 439 |
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[3034] | 440 |
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| 441 | void ShaderProgram::SetValue1f(const string &name, float val)
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| 442 | {
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| 443 | cgGLSetParameter1f(GetOrCreateParameter(name), val);
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| 444 | }
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| 445 |
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| 446 |
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| 447 | void ShaderProgram::SetValue2f(const string &name, float val1, float val2)
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| 448 | {
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| 449 | cgGLSetParameter2f(GetOrCreateParameter(name), val1, val2);
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| 450 | }
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| 451 |
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| 452 |
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| 453 | void ShaderProgram::SetValue3f(const string &name, float val1, float val2, float val3)
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| 454 | {
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| 455 | cgGLSetParameter3f(GetOrCreateParameter(name), val1, val2, val3);
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| 456 | }
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| 457 |
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| 458 |
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| 459 | void ShaderProgram::SetArray1f(const string &name, float *vals, int numElements)
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| 460 | {
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| 461 | cgGLSetParameterArray1f(GetOrCreateParameter(name), 0, numElements, (const float *)vals);
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| 462 | }
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| 463 |
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| 464 |
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| 465 | void ShaderProgram::SetArray2f(const string &name, float *vals, int numElements)
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| 466 | {
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| 467 | cgGLSetParameterArray2f(GetOrCreateParameter(name), 0, numElements, (const float *)vals);
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| 468 | }
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| 469 |
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| 470 |
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| 471 | void ShaderProgram::SetArray3f(const string &name, float *vals, int numElements)
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| 472 | {
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| 473 | cgGLSetParameterArray3f(GetOrCreateParameter(name), 0, numElements, (const float *)vals);
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| 474 | }
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| 475 |
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| 476 |
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| 477 | void ShaderProgram::SetMatrix(const string &name, const Matrix4x4 &mat)
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| 478 | {
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| 479 | cgGLSetMatrixParameterfc(GetOrCreateParameter(name), (const float *)mat.x);
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| 480 | }
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| 481 |
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| 482 |
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| 483 | void ShaderProgram::SetTexture(const string &name, unsigned int tex)
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| 484 | {
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| 485 | CGparameter p = GetOrCreateParameter(name);
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| 486 |
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| 487 | cgGLSetTextureParameter(p, tex);
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| 488 | cgGLEnableTextureParameter(p);
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| 489 |
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[3030] | 490 | mTextureParams.push_back(p);
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| 491 | }
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| 492 |
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| 493 |
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[3034] | 494 | int ShaderProgram::GetParamIdxByName(const std::string &name) const
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[3030] | 495 | {
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[3034] | 496 | CGParameterMap::const_iterator it = mParamHash.find(name);
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| 497 | return (*it).second;
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[3030] | 498 | }
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| 499 |
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| 500 |
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| 501 | } // namespace |
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