// 使用OpenGL來繪圖
void RenderFrameOpenGL(void)
{
Vector4 vPlane(0.0f, 0.0f, 1.0f, -g_mirror_z);
// 清除畫面
glClearColor(0.0f, 0.0f, 0.5f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
// 畫出茶壼
RenderModelOpenGL(false, NULL);
// 設定轉換矩陣
Matrix4x4 view_matrix = g_Control.GetViewMatrix();;
Matrix4x4 world_view_matrix = view_matrix;
glMatrixMode(GL_PROJECTION);
glLoadMatrixf( (float *) &g_projection_matrix);
glMatrixMode(GL_MODELVIEW);
glLoadMatrixf( (float *) &world_view_matrix);
sModelMaterial_OpenGL material;
material.Submit(NULL);
// 設定頂點資料格式
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(3, GL_FLOAT, sizeof(Vertex_V), &g_Quad_v[0].m_Position);
// 畫出鏡子, 同時把鏡子部分的stencil buffer設為1.
{
glEnable(GL_STENCIL_TEST);
glStencilFunc(GL_ALWAYS, 1, 0xff);
glStencilOp(GL_KEEP, GL_KEEP, GL_REPLACE);
glColor4f(0.0f, 0.0f, 0.0f, 1.0f);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
}
// 把鏡子部分的zbuffer清為1.0
{
glStencilFunc(GL_EQUAL, 1, 0xff);
glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
// 把z值的輸出范圍設定為1~1, 也就是z永遠輸出1.
glDepthRange(1.0f, 1.0f);
glDepthFunc(GL_ALWAYS);
// 只更新zbuffer,不需要更新顏色.
glColorMask(false, false, false, false);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
// 恢復更新顏色的功能
glColorMask(true, true, true, true);
glDepthFunc(GL_LESS);
// 把z值的范圍還原為0~1
glDepthRange(0.0f, 1.0f);
}
// 畫出鏡子里的茶壼
{
glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
RenderModelOpenGL(true, &vPlane);
glDisable(GL_STENCIL_TEST);
}
// 把背景backbuffer的畫面呈現出來
GutSwapBuffersOpenGL();
}
// 使用OpenGL來繪圖
void RenderFrameOpenGL(void)
{
Vector4 vPlane(0.0f, 0.0f, 1.0f, -g_mirror_z);
{
// 使用g_framebuffer framebuffer object
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, g_framebuffer);
glViewport(0, 0, 512, 512);
// 清除畫面
glClearColor(0.0f, 0.0f, 0.9f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
//
RenderModelOpenGL(true, &vPlane);
}
{
// 使用主framebuffer object, 也就是視窗.
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
int w, h;
GutGetWindowSize(w, h);
glViewport(0, 0, w, h);
// 清除畫面
glClearColor(0.0f, 0.0f, 0.6f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
RenderModelOpenGL(false, NULL);
// 設定轉換矩陣
Matrix4x4 world_view_matrix = g_Control.GetViewMatrix();
glMatrixMode(GL_PROJECTION);
glLoadMatrixf( (float *) &g_projection_matrix);
glMatrixMode(GL_MODELVIEW);
glLoadMatrixf( (float *) &world_view_matrix);
sModelMaterial_OpenGL material;
material.m_Textures[0] = g_texture;
material.Submit(NULL);
// 設定頂點資料格式
glEnableClientState(GL_VERTEX_ARRAY);
glClientActiveTexture(GL_TEXTURE0_ARB);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
// 計算貼圖座標矩陣
Matrix4x4 uv_offset_matrix;
uv_offset_matrix.Scale_Replace(0.5f, 0.5f, 1.0f);
uv_offset_matrix[3].Set(0.5f, 0.5f, 0.0f, 1.0f);
Matrix4x4 texture_matrix = g_mirror_view_matrix * g_projection_matrix * uv_offset_matrix;
glMatrixMode(GL_TEXTURE);
glLoadMatrixf( (float *) &texture_matrix );
// vertex position & texcoord使用同樣的資料
glVertexPointer(3, GL_FLOAT, sizeof(Vertex_V), &g_Quad[0].m_Position);
glTexCoordPointer(3, GL_FLOAT, sizeof(Vertex_V), &g_Quad[0].m_Position);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
glLoadIdentity();
}
// 把背景backbuffer的畫面呈現出來
GutSwapBuffersOpenGL();
}
void RenderFrameDX10(void)
{
Vector4 vColorDarkBlue(0.0f, 0.0f, 0.5f, 1.0f);
Vector4 vColorBlue(0.0f, 0.0f, 0.8f, 1.0f);
Vector4 vPlane(0.0f, 0.0f, 1.0f, -g_mirror_z);
D3D10_VIEWPORT mainVP, VP;
// `取得呼叫GutCreateGraphicsDeviceDX10時所產生的D3D10物件`
ID3D10RenderTargetView *pRenderTargetView = GutGetDX10RenderTargetView();
ID3D10DepthStencilView *pDepthStencilView = GutGetDX10DepthStencilView();
// front/back buffer
IDXGISwapChain *pSwapChain = GutGetDX10SwapChain();
// `在動態貼圖中畫出鏡射的茶壼`
{
UINT nViewports = 1;
g_pDevice->RSGetViewports(&nViewports, &mainVP);
// new rendertarget viewport size
VP.TopLeftX = VP.TopLeftY = 0;
VP.Width = VP.Height = 512;
VP.MinDepth = 0.0f;
VP.MaxDepth = 1.0f;
ID3D10ShaderResourceView *null_views[4] = {NULL, NULL, NULL, NULL};
g_pDevice->PSSetShaderResources(0, 4, null_views);
// `使用代表動態貼圖的`RenderTarget
g_pDevice->OMSetRenderTargets(1, &g_pRGBAView, g_pDepthStencilView);
//
g_pDevice->RSSetViewports(1, &VP);
// `清除顏色`
g_pDevice->ClearRenderTargetView(g_pRGBAView, (float *)&vColorDarkBlue);
// `清除`Depth/Stencil buffer
g_pDevice->ClearDepthStencilView(g_pDepthStencilView, D3D10_CLEAR_DEPTH | D3D10_CLEAR_STENCIL, 1.0f, 0);
// `畫鏡射的茶壼`
RenderModelDX10(true, &vPlane);
}
// `在主Framebuffer中畫出正常的茶壼`
{
// `使用主`framebuffer
g_pDevice->OMSetRenderTargets(1, &pRenderTargetView, pDepthStencilView);
//
g_pDevice->RSSetViewports(1, &mainVP);
// `清除顏色`
g_pDevice->ClearRenderTargetView(pRenderTargetView, (float *)&vColorBlue);
// `清除`Depth/Stencil buffer
g_pDevice->ClearDepthStencilView(pDepthStencilView, D3D10_CLEAR_DEPTH | D3D10_CLEAR_STENCIL, 1.0f, 0);
// `畫茶壼`
RenderModelDX10(false, &vPlane);
}
// `在主framebuffer中畫出鏡面`
{
UINT stride = sizeof(Vertex_VT);
UINT offset = 0;
// `設定`vertex shader
g_pDevice->VSSetShader(g_pVertexShader);
// `設定`pixel shader
g_pDevice->PSSetShader(g_pPixelShader);
// `設定`Shader Constants
g_pDevice->VSSetConstantBuffers(0, 1, &g_pVSConstBuffer);
// `設定vertex資料格式`
g_pDevice->IASetInputLayout(g_pVertexLayout);
// `設定三角形頂點索引值資料排列是triangle strip`
g_pDevice->IASetPrimitiveTopology(D3D10_PRIMITIVE_TOPOLOGY_TRIANGLESTRIP);
// Vertex Buffer
g_pDevice->IASetVertexBuffers(0, 1, &g_pVertexBuffer, &stride, &offset);
// `計算`texture matrix
Matrix4x4 uv_offset_matrix;
uv_offset_matrix.Scale_Replace(0.5f, -0.5f, 1.0f);
uv_offset_matrix[3].Set(0.5f, 0.5f, 0.0f, 1.0f);
Matrix4x4 texture_matrix = g_mirror_view_matrix * g_proj_matrix * uv_offset_matrix;
Vertex_VT *pVertices = NULL;
g_pVertexBuffer->Map( D3D10_MAP_WRITE_DISCARD, NULL, (void **) &pVertices);
for ( int i=0; i<4; i++ )
{
Vector4 vPosition = g_Quad[i].m_Position;
Vector4 vTexcoord = vPosition * texture_matrix;
vTexcoord /= vTexcoord.GetW();
pVertices[i].m_Position = vPosition;
pVertices[i].m_Texcoord = vTexcoord;
}
g_pVertexBuffer->Unmap();
// `計算矩陣`
Matrix4x4 view_matrix = g_Control.GetViewMatrix();
Matrix4x4 wvp_matrix = view_matrix * g_proj_matrix;
// `更新shader參數`
Matrix4x4 *pConstData;
g_pVSConstBuffer->Map( D3D10_MAP_WRITE_DISCARD, NULL, (void **) &pConstData );
*pConstData = wvp_matrix;
g_pVSConstBuffer->Unmap();
// `套用第1張貼圖`
g_pDevice->PSSetShaderResources(0, 1, &g_pTextureView);
g_pDevice->PSSetSamplers(0, 1, &g_pSamplerState);
// `畫出格子`
g_pDevice->Draw(4, 0);
}
// `等待硬體掃結束, 然後才更新畫面.`
pSwapChain->Present(1, 0);
}
// 使用Direct3D9來繪圖
void RenderFrameDX9(void)
{
LPDIRECT3DDEVICE9 device = GutGetGraphicsDeviceDX9();
Vector4 vPlane(0.0f, 0.0f, 1.0f, -g_mirror_z);
device->BeginScene();
// 消除畫面
device->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER | D3DCLEAR_STENCIL, D3DCOLOR_RGBA(0, 0, 150, 255), 1.0f, 0);
// 畫出茶壼
RenderModelDX9(false, NULL);
// 畫出鏡面, 同時把stencil值設為1.
{
device->SetRenderState(D3DRS_STENCILENABLE, TRUE);
device->SetRenderState(D3DRS_STENCILPASS, D3DSTENCILOP_REPLACE);
device->SetRenderState(D3DRS_STENCILFUNC, D3DCMP_ALWAYS);
device->SetRenderState(D3DRS_STENCILREF, 1);
Matrix4x4 identity_matrix = Matrix4x4::IdentityMatrix();
device->SetTransform(D3DTS_WORLD, (D3DMATRIX *) &identity_matrix);
sModelMaterial_DX9 material;
material.m_Material.Diffuse.r = material.m_Material.Diffuse.g = material.m_Material.Diffuse.b = material.m_Material.Diffuse.a = 0.0f;
material.Submit();
// 畫出鏡面
device->SetFVF(D3DFVF_XYZ);
device->DrawPrimitiveUP(D3DPT_TRIANGLESTRIP, 2, g_Quad_v, sizeof(Vertex_V));
}
// 把鏡面范圍的ZBuffer清為1.0
{
// 設定stencil test條件, 只更新鏡面范圍的像素.
device->SetRenderState(D3DRS_STENCILFUNC, D3DCMP_EQUAL);
device->SetRenderState(D3DRS_STENCILPASS, D3DSTENCILOP_KEEP);
device->SetRenderState(D3DRS_ZFUNC, D3DCMP_ALWAYS); // 關閉z test
device->SetRenderState(D3DRS_COLORWRITEENABLE, 0); // 關閉RGBA的輸出
// 經由修改viewport Z范圍的方法, 把3D物件的Z值輸出固定為1.
int w, h;
GutGetWindowSize(w, h);
D3DVIEWPORT9 viewport;
viewport.X = viewport.Y = 0;
viewport.Width = w; viewport.Height = h;
viewport.MinZ = 1.0f; viewport.MaxZ = 1.0f;
device->SetViewport(&viewport);
// 畫出鏡面
device->DrawPrimitiveUP(D3DPT_TRIANGLESTRIP, 2, g_Quad_v, sizeof(Vertex_V));
// 把Z值范圍還原成0-1
viewport.MinZ = 0.0f; viewport.MaxZ = 1.0f;
device->SetViewport(&viewport);
// 還原zbuffer test的測試條件
device->SetRenderState(D3DRS_ZFUNC, D3DCMP_LESSEQUAL);
// 重新打開RGBA的輸出
device->SetRenderState(D3DRS_COLORWRITEENABLE,
D3DCOLORWRITEENABLE_RED |
D3DCOLORWRITEENABLE_GREEN |
D3DCOLORWRITEENABLE_BLUE |
D3DCOLORWRITEENABLE_ALPHA);
}
// 在鏡面范圍里畫出鏡射的茶壼
{
RenderModelDX9(true, &vPlane);
device->SetRenderState(D3DRS_STENCILENABLE, FALSE);
}
// 宣告所有的繪圖指令都下完了
device->EndScene();
// 把背景backbuffer的畫面呈現出來
device->Present( NULL, NULL, NULL, NULL );
}
void RenderFrameDX10(void)
{
Vector4 vColorDarkBlue(0.0f, 0.0f, 0.5f, 1.0f);
Vector4 vColorBlue(0.0f, 0.0f, 0.8f, 1.0f);
Vector4 vPlane(0.0f, 0.0f, 1.0f, -g_mirror_z);
D3D10_VIEWPORT mainVP, VP;
// 取得呼叫GutCreateGraphicsDeviceDX10時所產生的D3D10物件
ID3D10RenderTargetView *pRenderTargetView = GutGetDX10RenderTargetView(); //frame buffer
ID3D10DepthStencilView *pDepthStencilView = GutGetDX10DepthStencilView(); //depth/stencil buffer
IDXGISwapChain *pSwapChain = GutGetDX10SwapChain(); // front/back buffer
// 在動態貼圖中畫出鏡射的茶壼
{
UINT nViewports = 1;
g_pDevice->RSGetViewports(&nViewports, &mainVP);
// new rendertarget viewport size
VP.TopLeftX = VP.TopLeftY = 0;
VP.Width = VP.Height = 512;
VP.MinDepth = 0.0f;
VP.MaxDepth = 1.0f;
ID3D10ShaderResourceView *null_views[4] = {NULL, NULL, NULL, NULL};
g_pDevice->PSSetShaderResources(0, 4, null_views);
// 使用代表動態貼圖的RenderTarget
g_pDevice->OMSetRenderTargets(1, &g_pRGBAView, g_pDepthStencilView);
//
g_pDevice->RSSetViewports(1, &VP);
// 清除顏色
g_pDevice->ClearRenderTargetView(g_pRGBAView, (float *)&vColorDarkBlue);
// 清除Depth/Stencil buffer
g_pDevice->ClearDepthStencilView(g_pDepthStencilView, D3D10_CLEAR_DEPTH | D3D10_CLEAR_STENCIL, 1.0f, 0);
// 畫鏡射的茶壼
RenderModelDX10(true, &vPlane);
}
// 在主Framebuffer中畫出正常的茶壼
{
// 使用主framebuffer
g_pDevice->OMSetRenderTargets(1, &pRenderTargetView, pDepthStencilView);
//
g_pDevice->RSSetViewports(1, &mainVP);
// 清除顏色
g_pDevice->ClearRenderTargetView(pRenderTargetView, (float *)&vColorBlue);
// 清除Depth/Stencil buffer
g_pDevice->ClearDepthStencilView(pDepthStencilView, D3D10_CLEAR_DEPTH | D3D10_CLEAR_STENCIL, 1.0f, 0);
// 畫茶壼
RenderModelDX10(false, &vPlane);
}
// 在主framebuffer中畫出鏡面
{
UINT stride = sizeof(Vertex_V);
UINT offset = 0;
// 設定vertex shader
g_pDevice->VSSetShader(g_pVertexShader);
// 設定pixel shader
g_pDevice->PSSetShader(g_pPixelShader);
// 設定Shader Constants
g_pDevice->VSSetConstantBuffers(0, 1, &g_pVSConstBuffer);
// 設定vertex資料格式
g_pDevice->IASetInputLayout(g_pVertexLayout);
// 設定三角形頂點索引值資料排列是triangle strip
g_pDevice->IASetPrimitiveTopology(D3D10_PRIMITIVE_TOPOLOGY_TRIANGLESTRIP);
// Vertex Buffer
g_pDevice->IASetVertexBuffers(0, 1, &g_pVertexBuffer, &stride, &offset);
// 計算texture matrix
Matrix4x4 uv_offset_matrix;
uv_offset_matrix.Scale_Replace(0.5f, -0.5f, 1.0f);
uv_offset_matrix[3].Set(0.5f, 0.5f, 0.0f, 1.0f);
Matrix4x4 texture_matrix = g_mirror_view_matrix * g_proj_matrix * uv_offset_matrix;
// 計算矩陣
Matrix4x4 view_matrix = g_Control.GetViewMatrix();
Matrix4x4 wvp_matrix = view_matrix * g_proj_matrix;
// 更新shader參數
Matrix4x4 *pConstData;
g_pVSConstBuffer->Map( D3D10_MAP_WRITE_DISCARD, NULL, (void **) &pConstData );
pConstData[0] = wvp_matrix;
pConstData[1] = texture_matrix;
g_pVSConstBuffer->Unmap();
// 套用第1張貼圖
g_pDevice->PSSetShaderResources(0, 1, &g_pTextureView);
// 畫出鏡面
g_pDevice->Draw(4, 0);
}
// 等待硬體掃結束, 然後才更新畫面
pSwapChain->Present(1, 0);
}
// 使用DirectX 9來繪圖
void RenderFrameDX9(void)
{
LPDIRECT3DDEVICE9 device = GutGetGraphicsDeviceDX9();
Vector4 vPlane(0.0f, 0.0f, 1.0f, -g_mirror_z);
// 開始下繪圖指令
device->BeginScene();
{
LPDIRECT3DSURFACE9 pFrameBufferBackup, pDepthBufferBackup;
device->GetRenderTarget(0, &pFrameBufferBackup); pFrameBufferBackup->Release();
device->GetDepthStencilSurface(&pDepthBufferBackup); pDepthBufferBackup->Release();
LPDIRECT3DSURFACE9 pSurface;
g_pTexture->GetSurfaceLevel(0, &pSurface);
device->SetRenderTarget(0, pSurface);
device->SetDepthStencilSurface(g_pDepthStencil);
device->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, D3DCOLOR_RGBA(0, 0, 200, 255), 1.0f, 0);
RenderModelDX9(true, &vPlane);
pSurface->Release();
device->SetRenderTarget(0, pFrameBufferBackup);
device->SetDepthStencilSurface(pDepthBufferBackup);
}
// 把上一個步驟的結果當成貼圖來使用
{
// 消除畫面
device->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, D3DCOLOR_RGBA(0, 0, 150, 255), 1.0f, 0);
RenderModelDX9(false, NULL);
Matrix4x4 identMat; identMat.Identity();
device->SetTransform(D3DTS_WORLD, (D3DMATRIX *) &identMat);
sModelMaterial_DX9 material;
material.m_pTextures[0] = g_pTexture;
material.Submit();
device->SetSamplerState(0, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR);
device->SetSamplerState(0, D3DSAMP_MINFILTER, D3DTEXF_LINEAR);
device->SetSamplerState(0, D3DSAMP_MIPFILTER, D3DTEXF_NONE);
device->SetSamplerState(1, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR);
device->SetSamplerState(1, D3DSAMP_MINFILTER, D3DTEXF_LINEAR);
device->SetSamplerState(1, D3DSAMP_MIPFILTER, D3DTEXF_NONE);
Matrix4x4 uv_offset_matrix;
uv_offset_matrix.Scale_Replace(0.5f, -0.5f, 1.0f);
uv_offset_matrix[3].Set(0.5f, 0.5f, 0.5f, 1.0f);
Matrix4x4 inv_view_matrix = g_Control.GetViewMatrix();
inv_view_matrix.FastInvert();
Matrix4x4 texture_matrix = inv_view_matrix * g_mirror_view_matrix * g_projection_matrix * uv_offset_matrix;
device->SetTransform(D3DTS_TEXTURE0, (D3DMATRIX *) &texture_matrix);
device->SetTextureStageState(0, D3DTSS_TEXCOORDINDEX, D3DTSS_TCI_CAMERASPACEPOSITION);
// D3DTTFF_PROJECTED告知direct3d裝置texcoord需要除以w
device->SetTextureStageState(0, D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_COUNT4|D3DTTFF_PROJECTED);
float v[12];
for ( int i=0; i<4; i++ )
{
g_Quad[i].m_Position.StoreXYZ(&v[i*3]);
}
// 畫出矩形
device->SetFVF(D3DFVF_XYZ);
//device->DrawPrimitiveUP(D3DPT_TRIANGLESTRIP, 2, g_Quad, sizeof(Vertex_V));
device->DrawPrimitiveUP(D3DPT_TRIANGLESTRIP, 2, v, 12);
}
// 宣告所有的繪圖指令都下完了
device->EndScene();
// 把背景backbuffer的畫面呈現出來
device->Present( NULL, NULL, NULL, NULL );
}
IFXRESULT CIFXDeviceTexUnitOGL::SetHWTexCoordGen(IFXenum eGenMode)
{
IFXRESULT rc = IFX_OK;
m_eTexCoordGen = eGenMode;
m_pDevice->SetActiveTexUnit(m_uTexUnitNum);
m_mTexGenMatrix.Reset();
IFXASSERTBOX(m_pOGL->m_bValidOpenGL, "(Error): Making OpenGL call on Invalid context!");
switch(eGenMode)
{
case IFX_NONE:
m_pOGL->glDisable(GL_TEXTURE_GEN_S);
m_pOGL->glDisable(GL_TEXTURE_GEN_T);
m_pOGL->glDisable(GL_TEXTURE_GEN_R);
break;
case IFX_TEXGEN_REFLECTION_SPHERE:
m_pOGL->glEnable(GL_TEXTURE_GEN_S);
m_pOGL->glEnable(GL_TEXTURE_GEN_T);
m_pOGL->glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
m_pOGL->glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
break;
case IFX_TEXGEN_VIEWPOSITION:
{
// Texgen matrix is the local->canera matrix.
IFXMatrix4x4 mView = m_pDevice->GetViewMatrix();
m_mTexGenMatrix.Multiply3x4(mView, m_pDevice->GetWorldMatrix());
m_pOGL->glEnable(GL_TEXTURE_GEN_S);
m_pOGL->glEnable(GL_TEXTURE_GEN_T);
m_pOGL->glEnable(GL_TEXTURE_GEN_R);
m_pOGL->glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
m_pOGL->glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
m_pOGL->glTexGeni(GL_R, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
IFXVector4 vPlane(1,0,0,0);
m_pOGL->glTexGenfv(GL_S, GL_OBJECT_PLANE, vPlane.Raw());
vPlane.Set(0,1,0,0);
m_pOGL->glTexGenfv(GL_T, GL_OBJECT_PLANE, vPlane.Raw());
vPlane.Set(0,0,1,0);
m_pOGL->glTexGenfv(GL_R, GL_OBJECT_PLANE, vPlane.Raw());
}
break;
case IFX_TEXGEN_VIEWNORMAL:
if(m_pOGL->CubeTextureSupport())
{
m_pOGL->glEnable(GL_TEXTURE_GEN_S);
m_pOGL->glEnable(GL_TEXTURE_GEN_T);
m_pOGL->glEnable(GL_TEXTURE_GEN_R);
m_pOGL->glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_NORMAL_MAP_ARB);
m_pOGL->glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_NORMAL_MAP_ARB);
m_pOGL->glTexGeni(GL_R, GL_TEXTURE_GEN_MODE, GL_NORMAL_MAP_ARB);
}
break;
case IFX_TEXGEN_VIEWREFLECTION:
if(m_pOGL->CubeTextureSupport())
{
m_pOGL->glEnable(GL_TEXTURE_GEN_S);
m_pOGL->glEnable(GL_TEXTURE_GEN_T);
m_pOGL->glEnable(GL_TEXTURE_GEN_R);
m_pOGL->glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP_ARB);
m_pOGL->glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP_ARB);
m_pOGL->glTexGeni(GL_R, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP_ARB);
}
break;
case IFX_TEXGEN_WORLDPOSITION:
{
// Texgen matrix is the local->world matrix.
m_mTexGenMatrix = m_pDevice->GetWorldMatrix();
m_pOGL->glEnable(GL_TEXTURE_GEN_S);
m_pOGL->glEnable(GL_TEXTURE_GEN_T);
m_pOGL->glEnable(GL_TEXTURE_GEN_R);
m_pOGL->glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
m_pOGL->glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
m_pOGL->glTexGeni(GL_R, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
IFXVector4 vPlane(1,0,0,0);
m_pOGL->glTexGenfv(GL_S, GL_OBJECT_PLANE, vPlane.Raw());
vPlane.Set(0,1,0,0);
m_pOGL->glTexGenfv(GL_T, GL_OBJECT_PLANE, vPlane.Raw());
vPlane.Set(0,0,1,0);
m_pOGL->glTexGenfv(GL_R, GL_OBJECT_PLANE, vPlane.Raw());
}
break;
case IFX_TEXGEN_WORLDNORMAL:
{
// TexGenMatrix is inverse transpose of the camera->world matrix
// The device View matrix is the Inverse of camera->world matrix
m_mTexGenMatrix = m_pDevice->GetViewMatrix();
// Don't want to translate direction vectors
m_mTexGenMatrix[12] = 0;
m_mTexGenMatrix[13] = 0;
m_mTexGenMatrix[14] = 0;
// Now for the transpose part of inverse transpose.
m_mTexGenMatrix.Transpose();
if(m_pOGL->CubeTextureSupport())
{
m_pOGL->glEnable(GL_TEXTURE_GEN_S);
m_pOGL->glEnable(GL_TEXTURE_GEN_T);
m_pOGL->glEnable(GL_TEXTURE_GEN_R);
m_pOGL->glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_NORMAL_MAP_ARB);
m_pOGL->glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_NORMAL_MAP_ARB);
m_pOGL->glTexGeni(GL_R, GL_TEXTURE_GEN_MODE, GL_NORMAL_MAP_ARB);
}
}
break;
case IFX_TEXGEN_WORLDREFLECTION:
{
// TexGenMatrix is inverse transpose of the camera->world matrix
// The device View matrix is the Inverse of camera->world matrix
m_mTexGenMatrix = m_pDevice->GetViewMatrix();
// Don't want to translate direction vectors
m_mTexGenMatrix[12] = 0;
m_mTexGenMatrix[13] = 0;
m_mTexGenMatrix[14] = 0;
// Now for the transpose part of inverse transpose.
m_mTexGenMatrix.Transpose();
if(m_pOGL->CubeTextureSupport())
{
m_pOGL->glEnable(GL_TEXTURE_GEN_S);
m_pOGL->glEnable(GL_TEXTURE_GEN_T);
m_pOGL->glEnable(GL_TEXTURE_GEN_R);
m_pOGL->glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP_ARB);
m_pOGL->glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP_ARB);
m_pOGL->glTexGeni(GL_R, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP_ARB);
}
}
break;
case IFX_TEXGEN_LOCALPOSITION:
{
m_pOGL->glEnable(GL_TEXTURE_GEN_S);
m_pOGL->glEnable(GL_TEXTURE_GEN_T);
m_pOGL->glEnable(GL_TEXTURE_GEN_R);
m_pOGL->glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
m_pOGL->glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
m_pOGL->glTexGeni(GL_R, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
IFXVector4 vPlane(1,0,0,0);
m_pOGL->glTexGenfv(GL_S, GL_OBJECT_PLANE, vPlane.Raw());
vPlane.Set(0,1,0,0);
m_pOGL->glTexGenfv(GL_T, GL_OBJECT_PLANE, vPlane.Raw());
vPlane.Set(0,0,1,0);
m_pOGL->glTexGenfv(GL_R, GL_OBJECT_PLANE, vPlane.Raw());
}
break;
case IFX_TEXGEN_LOCALNORMAL:
{
// The texgen matrix is the inverse transpose of the camera->local
// matrix. This is the same as the transpose of the concatenated
// world and view matrices sent to the device.
IFXMatrix4x4 mView = m_pDevice->GetViewMatrix();
// Concatenate the world and view matrices.
m_mTexGenMatrix.Multiply3x4(mView, m_pDevice->GetWorldMatrix());
// Don't want to translate direction vectors.
m_mTexGenMatrix[12] = 0;
m_mTexGenMatrix[13] = 0;
m_mTexGenMatrix[14] = 0;
// Finally, take the transpose.
m_mTexGenMatrix.Transpose();
if(m_pOGL->CubeTextureSupport())
{
m_pOGL->glEnable(GL_TEXTURE_GEN_S);
m_pOGL->glEnable(GL_TEXTURE_GEN_T);
m_pOGL->glEnable(GL_TEXTURE_GEN_R);
m_pOGL->glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_NORMAL_MAP_ARB);
m_pOGL->glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_NORMAL_MAP_ARB);
m_pOGL->glTexGeni(GL_R, GL_TEXTURE_GEN_MODE, GL_NORMAL_MAP_ARB);
}
}
break;
case IFX_TEXGEN_LOCALREFLECTION:
{
// The texgen matrix is the inverse transpose of the camera->local
// matrix. This is the same as the transpose of the concatenated
// world and view matrices sent to the device.
IFXMatrix4x4 mView = m_pDevice->GetViewMatrix();
// Concatenate the world and view matrices.
m_mTexGenMatrix.Multiply3x4(mView, m_pDevice->GetWorldMatrix());
// Don't want to translate direction vectors.
m_mTexGenMatrix[12] = 0;
m_mTexGenMatrix[13] = 0;
m_mTexGenMatrix[14] = 0;
// Finally, take the transpose.
m_mTexGenMatrix.Transpose();
if(m_pOGL->CubeTextureSupport())
{
m_pOGL->glEnable(GL_TEXTURE_GEN_S);
m_pOGL->glEnable(GL_TEXTURE_GEN_T);
m_pOGL->glEnable(GL_TEXTURE_GEN_R);
m_pOGL->glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP_ARB);
m_pOGL->glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP_ARB);
m_pOGL->glTexGeni(GL_R, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP_ARB);
}
}
break;
}
IFXRUN(rc, SetHWTextureTransform(m_mTexMatrix));
return rc;
}
