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18
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1 /*
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2 * GuiImage
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3 */
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4
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5 #include "GuiImage.h"
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6 #include "VertexTypes.h"
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7
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8 /*
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9 * GuiImage
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10 */
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11 GuiImage::GuiImage() : pEffect(NULL), pVertexBuffer(NULL), pTexture(NULL)
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12 {
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13 }
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14
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15 /*
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16 * Initialize
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17 */
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18 ErrorCode GuiImage::Initialize(ResourceManager* pManager)
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19 {
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20 pResourceManager = pManager;
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21
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22 ErrorCode eCode = pResourceManager->CreateEffectFromFile("Data\\Shaders\\TexturedQuad.fx", &pEffect);
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23 if(eCode == Error_Success)
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24 {
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25 eCode = pResourceManager->CreateVertexBuffer(6 * sizeof(Vertex::Quad), D3DUSAGE_WRITEONLY, D3DPOOL_MANAGED, &pVertexBuffer);
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26 if(eCode == Error_Success)
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27 {
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28 eCode = SetupVertexBuffer();
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29 }
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30 }
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31
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32 return eCode;
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33 }
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34
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35 /*
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36 * Terminate
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37 */
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38 void GuiImage::Terminate()
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39 {
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40 if(pTexture)
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41 {
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42 pTexture->Release();
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43 pTexture = NULL;
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44 }
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45
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46 if(pVertexBuffer)
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47 {
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48 pVertexBuffer->Release();
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49 pVertexBuffer = NULL;
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50 }
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51
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52 if(pEffect)
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53 {
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54 pEffect->Release();
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55 pEffect = NULL;
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56 }
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57 }
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58
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59 /*
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60 * Update
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61 */
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62 void GuiImage::Update(float fElapsed)
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63 {
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64 }
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65
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66 /*
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67 * Render
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68 */
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69 void GuiImage::Render(RenderContext& kContext, Camera& kCamera)
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70 {
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71 if(pTexture)
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72 {
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73 uint32 nPasses = 0;
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74
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75 const float fOffsetX = -0.5f * ScreenSizeX;
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76 const float fOffsetY = +0.5f * ScreenSizeY;
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77
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78 const D3DXVECTOR4 kColorVector(1.0f, 1.0f, 1.0f, 1.0f);
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79
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80 kContext.ApplyCameraToEffect(kCamera, pEffect);
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81
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82 pEffect->SetTechnique(pEffect->GetTechnique(0));
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83 pEffect->Begin(&nPasses, 0);
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84 pEffect->BeginPass(0);
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85
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86 D3DXMATRIX kScale;
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87 D3DXMatrixScaling(&kScale, kDimensions.x, kDimensions.y, 1.0f);
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88
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89 D3DXMATRIX kTranslate;
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90 D3DXMatrixTranslation(&kTranslate, fOffsetX + kPosition.x + 0.5f, fOffsetY - kPosition.y + 0.5f, 0.0f);
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91
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92 D3DXMATRIX kWorldMatrix;
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93 D3DXMatrixMultiply(&kWorldMatrix, &kScale, &kTranslate);
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94
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95 pEffect->SetMatrix(pEffect->GetParameterByName(NULL, "kWorld"), &kWorldMatrix);
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96 pEffect->SetVector(pEffect->GetParameterByName(NULL, "kColor"), &kColorVector);
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97 pEffect->SetTexture(pEffect->GetParameterByName(NULL, "kTexture"), pTexture);
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98 pEffect->CommitChanges();
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99
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100 kContext.DrawTriangles(Vertex::Quad::Declaration, pVertexBuffer, sizeof(Vertex::Quad), TrianglesPerFace);
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101
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102 pEffect->EndPass();
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103 pEffect->End();
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104 }
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105 }
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106
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107 /*
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108 * SetTexture
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109 */
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110 ErrorCode GuiImage::SetTexture(const char* pName)
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111 {
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112 if(pTexture)
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113 {
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114 pTexture->Release();
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115 pTexture = NULL;
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116 }
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117
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118 return pResourceManager->CreateTextureFromFile(pName, &pTexture);
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119 }
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120
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121 /*
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122 * SetupVertexBuffer
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123 */
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124 ErrorCode GuiImage::SetupVertexBuffer()
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125 {
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126 Vertex::Quad* pVertices = NULL;
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127
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128 HRESULT hResult = pVertexBuffer->Lock(0, 0, (void**)&pVertices, D3DLOCK_DISCARD);
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129 if(FAILED(hResult))
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130 {
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131 return Error_Fail;
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132 }
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133
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134 pVertices[0] = Vertex::Quad(+0.0f, -1.0f, 1.0f, 0.0f, 1.0f);
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135 pVertices[1] = Vertex::Quad(+0.0f, +0.0f, 1.0f, 0.0f, 0.0f);
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136 pVertices[2] = Vertex::Quad(+1.0f, +0.0f, 1.0f, 1.0f, 0.0f);
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137 pVertices[3] = Vertex::Quad(+0.0f, -1.0f, 1.0f, 0.0f, 1.0f);
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138 pVertices[4] = Vertex::Quad(+1.0f, +0.0f, 1.0f, 1.0f, 0.0f);
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139 pVertices[5] = Vertex::Quad(+1.0f, -1.0f, 1.0f, 1.0f, 1.0f);
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140
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141 pVertexBuffer->Unlock();
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142
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143 return Error_Success;
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144 }
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