// 使用DirectX 9來繪圖
void RenderFrameDX9(void)
{
LPDIRECT3DDEVICE9 device = GutGetGraphicsDeviceDX9();
LPDIRECT3DTEXTURE9 pBlurredTexture = NULL;
Matrix4x4 light_projection_matrix;
Matrix4x4 light_view_matrix;
Matrix4x4 view_matrix = g_Control.GetViewMatrix();
Matrix4x4 world_matrix = g_Control.GetObjectMatrix();
// 開始下繪圖指令
device->BeginScene();
{
// 保存主framebuffer
LPDIRECT3DSURFACE9 pFrameBufferBackup, pDepthBufferBackup;
device->GetRenderTarget(0, &pFrameBufferBackup); pFrameBufferBackup->Release();
device->GetDepthStencilSurface(&pDepthBufferBackup); pDepthBufferBackup->Release();
// 取出動態貼圖中的surface
LPDIRECT3DSURFACE9 pSurface;
g_pTexture->GetSurfaceLevel(0, &pSurface);
// 把繪圖結果輸出到動態貼圖中
device->SetRenderTarget(0, pSurface);
device->SetDepthStencilSurface(g_pDepthStencil);
// 清除畫面
device->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, D3DCOLOR_RGBA(255, 255, 255, 255), 1.0f, 0);
// 設定光源位置
Vector4 vLightPos = g_Light.m_Position;
Vector4 vLightUp(0.0f, 1.0f, 0.0f);
Vector4 vLightLookat(0.0f, 0.0f, 0.0f);
light_projection_matrix = GutMatrixPerspectiveRH_DirectX(60.0f, 1.0f, 0.1f, 100.0f);
light_view_matrix = GutMatrixLookAtRH(vLightPos, vLightLookat, vLightUp);
// 把鏡頭放到光源位置來畫陰影
device->SetTransform(D3DTS_PROJECTION, (D3DMATRIX *)&light_projection_matrix);
device->SetTransform(D3DTS_VIEW, (D3DMATRIX *)&light_view_matrix);
device->SetTransform(D3DTS_WORLD, (D3DMATRIX *)&world_matrix);
// 把所有反射關閉，讓模型在畫面上呈現黑色。
D3DCOLORVALUE zero = {0.0f, 0.0f, 0.0f, 1.0f};
sModelMaterial_DX9 material;
material.m_Material.Ambient = zero;
material.m_Material.Emissive = zero;
material.m_Material.Diffuse = zero;
material.m_Material.Specular = zero;
material.m_bCullFace = false;
material.Submit();
SetupLightingDX9();
// 畫出模型
g_Model_DX9.Render(0);
// 告知direct3d9裝置rendertarget使用完畢
pSurface->Release();
// 還原主framebuffer
device->SetRenderTarget(0, pFrameBufferBackup);
device->SetDepthStencilSurface(pDepthBufferBackup);
}
// 把影子柔化
{
pBlurredTexture = BlurTexture(g_pTexture);
}
// 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);
// 設定轉換矩陣
device->SetTransform(D3DTS_PROJECTION, (D3DMATRIX *) &g_projection_matrix);
device->SetTransform(D3DTS_VIEW, (D3DMATRIX *) &view_matrix);
device->SetTransform(D3DTS_WORLD, (D3DMATRIX *) &world_matrix);
// 設定光源
SetupLightingDX9();
device->SetSamplerState(0, D3DSAMP_ADDRESSU, D3DTADDRESS_WRAP);
device->SetSamplerState(0, D3DSAMP_ADDRESSV, D3DTADDRESS_WRAP);
device->SetSamplerState(1, D3DSAMP_ADDRESSU, D3DTADDRESS_WRAP);
device->SetSamplerState(1, D3DSAMP_ADDRESSV, D3DTADDRESS_WRAP);
// 畫出茶壼
g_Model_DX9.Render();
sModelMaterial_DX9 material;
material.m_pTextures[0] = pBlurredTexture;
material.Submit();
// 計算貼圖矩陣
Matrix4x4 inv_view_matrix = g_Control.GetCameraMatrix();
Matrix4x4 uv_offset_matrix;
uv_offset_matrix.Identity();
uv_offset_matrix.Scale(0.5f, -0.5f, 0.5f);
uv_offset_matrix[3].Set(0.5f, 0.5f, 0.5f, 1.0f);
Matrix4x4 texture_matrix = inv_view_matrix * light_view_matrix * light_projection_matrix * uv_offset_matrix;
Matrix4x4 indent_matrix = Matrix4x4::IdentityMatrix();
// 設定轉換矩陣
device->SetTransform(D3DTS_TEXTURE0, (D3DMATRIX *) &texture_matrix);
device->SetTransform(D3DTS_WORLD, (D3DMATRIX *) &indent_matrix);
// 開啟自動產生貼圖座標功能
device->SetTextureStageState(0, D3DTSS_TEXCOORDINDEX, D3DTSS_TCI_CAMERASPACEPOSITION);
device->SetTextureStageState(0, D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_COUNT4 | D3DTTFF_PROJECTED);
device->SetSamplerState(0, D3DSAMP_ADDRESSU, D3DTADDRESS_CLAMP);
device->SetSamplerState(0, D3DSAMP_ADDRESSV, D3DTADDRESS_CLAMP);
device->SetSamplerState(1, D3DSAMP_ADDRESSU, D3DTADDRESS_CLAMP);
device->SetSamplerState(1, D3DSAMP_ADDRESSV, D3DTADDRESS_CLAMP);
// 畫出地表
g_Terrain_DX9.Render(0);
device->SetTextureStageState(0, D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_DISABLE);
device->SetTextureStageState(0, D3DTSS_TEXCOORDINDEX, 0);
}
// 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 );
}
// `使用Direct3D9來繪圖`
void RenderFrameDX9(void)
{
LPDIRECT3DDEVICE9 device = GutGetGraphicsDeviceDX9();
Matrix4x4 light_projection_matrix;
Matrix4x4 light_view_matrix;
Matrix4x4 view_matrix = g_Control.GetViewMatrix();
Matrix4x4 world_matrix = g_Control.GetObjectMatrix();
// `開始下繪圖指令`
device->BeginScene();
// `把剪影畫在動態貼圖中`
if(1)
{
//! 设置临时framebuffer
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(255, 255, 255, 255), 1.0f, 0);
Vector4 vLightPos = g_Light.m_Position;
Vector4 vLightUp(0.0f, 1.0f, 0.0f);
Vector4 vLightLookat(0.0f, 0.0f, 0.0f);
// `把鏡頭放在光源的`
light_projection_matrix = GutMatrixPerspectiveRH_DirectX(60.0f, 1.0f, 0.1f, 100.0f);
light_view_matrix = GutMatrixLookAtRH(vLightPos, vLightLookat, vLightUp);
// `設定轉換矩陣`
device->SetTransform(D3DTS_PROJECTION, (D3DMATRIX *)&light_projection_matrix);
device->SetTransform(D3DTS_VIEW, (D3DMATRIX *)&light_view_matrix);
device->SetTransform(D3DTS_WORLD, (D3DMATRIX *)&world_matrix);
D3DCOLORVALUE zero = {0.0f, 0.0f, 0.0f, 1.0f};
sModelMaterial_DX9 material;
material.m_Material.Ambient = zero;
material.m_Material.Emissive = zero;
material.m_Material.Diffuse = zero;
material.m_Material.Specular = zero;
material.m_bCullFace = false;
material.Submit();
device->SetRenderState(D3DRS_LIGHTING, 0);
g_Model_DX9.Render(0);
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);
// `設定轉換矩陣`
device->SetTransform(D3DTS_PROJECTION, (D3DMATRIX *) &g_projection_matrix);
device->SetTransform(D3DTS_VIEW, (D3DMATRIX *) &view_matrix);
device->SetTransform(D3DTS_WORLD, (D3DMATRIX *) &world_matrix);
#define DRAW_TEAPORT_FIRST 1
//! 画茶壶
if (DRAW_TEAPORT_FIRST)
{
SetupLightingDX9();
g_Model_DX9.Render();
}
//! 设置矩形的纹理
sModelMaterial_DX9 material;
material.m_pTextures[0] = g_pTexture;
material.Submit();
Matrix4x4 inv_view_matrix = view_matrix;
inv_view_matrix.FastInvert();
Matrix4x4 uv_offset_matrix;
uv_offset_matrix.Identity();
uv_offset_matrix.Scale(0.5f, -0.5f, 0.5f);
uv_offset_matrix[3].Set(0.5f, 0.5f, 0.5f, 1.0f);
Matrix4x4 texture_matrix = inv_view_matrix * light_view_matrix * light_projection_matrix * uv_offset_matrix;
Matrix4x4 indent_matrix = Matrix4x4::IdentityMatrix();
device->SetTransform(D3DTS_TEXTURE0, (D3DMATRIX *) &texture_matrix);
device->SetTransform(D3DTS_WORLD, (D3DMATRIX *) &indent_matrix);
device->SetTextureStageState(0, D3DTSS_TEXCOORDINDEX, D3DTSS_TCI_CAMERASPACEPOSITION);
device->SetTextureStageState(0, D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_COUNT4 | D3DTTFF_PROJECTED );
device->SetRenderState(D3DRS_LIGHTING, FALSE);
// `畫出矩形`
device->SetFVF(D3DFVF_XYZ);
device->DrawPrimitiveUP(D3DPT_TRIANGLESTRIP, 2, g_Quad, sizeof(Vertex_VT));
//! 关闭纹理矩阵
device->SetTextureStageState(0, D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_DISABLE);
if (!DRAW_TEAPORT_FIRST)
{
//SetupLightingDX9();
device->SetTransform(D3DTS_WORLD, (D3DMATRIX *) &world_matrix);
g_Model_DX9.Render();
}
}
// `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 );
}
// 使用OpenGL來繪圖
void RenderFrameOpenGL(void)
{
Matrix4x4 light_projection_matrix;
Matrix4x4 light_view_matrix;
Matrix4x4 light_world_view_matrix;
Matrix4x4 view_matrix = g_Control.GetViewMatrix();
Matrix4x4 world_matrix = g_Control.GetObjectMatrix();
{
// `使用` g_framebuffer framebuffer object
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, g_framebuffer);
glViewport(0, 0, 512, 512);
// `清除畫面`
glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// `光源位置`
Vector4 vLightPos = g_Light.m_Position;
Vector4 vLightUp(0.0f, 1.0f, 0.0f);
Vector4 vLightLookat(0.0f, 0.0f, 0.0f);
// `設定光源的轉換矩陣`
light_projection_matrix = GutMatrixPerspectiveRH_OpenGL(60.0f, 1.0f, 0.1f, 100.0f);
light_view_matrix = GutMatrixLookAtRH(vLightPos, vLightLookat, vLightUp);
light_world_view_matrix = world_matrix * light_view_matrix;
glMatrixMode(GL_PROJECTION);
glLoadMatrixf( (float *) &light_projection_matrix );
glMatrixMode(GL_MODELVIEW);
glLoadMatrixf( (float *) &light_world_view_matrix );
glDisable(GL_LIGHTING);
// `畫出黑色的茶壼`
sModelMaterial_OpenGL material;
material.m_bCullFace = false;
material.m_Diffuse.Set(0.0);
material.Submit(NULL);
g_Model_OpenGL.Render(0);
}
{
// `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);
// `計算出一個可以轉換到鏡頭座標系的矩陣`
Matrix4x4 view_matrix = g_Control.GetViewMatrix();
glMatrixMode(GL_MODELVIEW);
glLoadMatrixf( (float *) &view_matrix);
SetupLightingOpenGL();
Matrix4x4 world_view_matrix = world_matrix * view_matrix;
glMatrixMode(GL_PROJECTION);
glLoadMatrixf( (float *) &g_projection_matrix);
glMatrixMode(GL_MODELVIEW);
glLoadMatrixf( (float *) &world_view_matrix);
g_Model_OpenGL.Render();
glMatrixMode(GL_MODELVIEW);
glLoadMatrixf( (float *) &view_matrix);
glDisable(GL_LIGHTING);
sModelMaterial_OpenGL material;
material.m_Diffuse.Set(1.0f);
material.m_Textures[0] = g_texture;
material.Submit(NULL);
Matrix4x4 uv_offset_matrix;
uv_offset_matrix.Identity();
uv_offset_matrix.Scale(0.5f, 0.5f, 0.5f);
uv_offset_matrix[3].Set(0.5f, 0.5f, 0.5f, 1.0f);
Matrix4x4 texture_matrix = light_view_matrix * light_projection_matrix * uv_offset_matrix;
glMatrixMode(GL_TEXTURE);
glLoadMatrixf( (float *)&texture_matrix);
glDisable(GL_LIGHTING);
// `設定頂點資料格式`
glPushClientAttrib(GL_CLIENT_VERTEX_ARRAY_BIT);
glEnableClientState(GL_VERTEX_ARRAY);
glClientActiveTexture(GL_TEXTURE0_ARB);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
//
glVertexPointer(3, GL_FLOAT, sizeof(Vertex_VT), &g_Quad[0].m_Position);
// `直接把頂點資料拿來當貼圖座標使用`
glTexCoordPointer(4, GL_FLOAT, sizeof(Vertex_VT), &g_Quad[0].m_Position);
// `畫出看板`
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
glPopClientAttrib();
glLoadIdentity();
}
// 把背景backbuffer的畫面呈現出來
GutSwapBuffersOpenGL();
}
// 使用OpenGL來繪圖
void RenderFrameOpenGL(void)
{
Matrix4x4 light_projection_matrix;
Matrix4x4 light_view_matrix;
Matrix4x4 light_world_view_matrix;
Matrix4x4 view_matrix = g_Control.GetViewMatrix();
Matrix4x4 world_matrix = g_Control.GetObjectMatrix();
GLuint blurred_texture = 0;
{
// 使用g_framebuffer framebuffer object
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, g_framebuffer);
glViewport(0, 0, g_framebuffer_w, g_framebuffer_h);
// 清除畫面
glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// 設定光源位置
Vector4 vLightPos = g_Light.m_Position;
Vector4 vLightUp(0.0f, 1.0f, 0.0f);
Vector4 vLightLookat(0.0f, 0.0f, 0.0f);
light_projection_matrix = GutMatrixPerspectiveRH_OpenGL(60.0f, 1.0f, 0.1f, 100.0f);
light_view_matrix = GutMatrixLookAtRH(vLightPos, vLightLookat, vLightUp);
light_world_view_matrix = world_matrix * light_view_matrix;
// 把鏡頭放到光源位置來畫陰影
glMatrixMode(GL_PROJECTION);
glLoadMatrixf( (float *) &light_projection_matrix );
glMatrixMode(GL_MODELVIEW);
glLoadMatrixf( (float *) &light_world_view_matrix );
SetupLightingOpenGL();
// 套用預設材質, 把貼圖全部關閉
sModelMaterial_OpenGL material;
material.m_Ambient = Vector4::GetZero();
material.m_Emissive = Vector4::GetZero();
material.m_Diffuse = Vector4::GetZero();
material.m_Specular = Vector4::GetZero();
material.m_bCullFace = false;
material.Submit(NULL);
// 畫出模型
g_Model_OpenGL.Render(0);
}
// 把影子柔化
{
blurred_texture = BlurTexture(g_texture);
}
{
// 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);
glMatrixMode(GL_MODELVIEW);
glLoadMatrixf( (float *) &view_matrix);
// 設定光源
SetupLightingOpenGL();
// 設定轉換矩陣
Matrix4x4 world_view_matrix = world_matrix * view_matrix;
glMatrixMode(GL_PROJECTION);
glLoadMatrixf( (float *) &g_projection_matrix);
glMatrixMode(GL_MODELVIEW);
glLoadMatrixf( (float *) &world_view_matrix);
// 畫出茶壼
g_Model_OpenGL.Render();
glMatrixMode(GL_MODELVIEW);
glLoadMatrixf( (float *) &view_matrix);
sModelMaterial_OpenGL material;
material.m_Textures[0] = blurred_texture;
material.Submit(NULL);
// 計算貼圖矩陣
Matrix4x4 uv_offset_matrix;
uv_offset_matrix.Identity();
uv_offset_matrix.Scale(0.5f, 0.5f, 0.5f);
uv_offset_matrix[3].Set(0.5f, 0.5f, 0.5f, 1.0f);
Matrix4x4 texture_matrix = light_view_matrix * light_projection_matrix * uv_offset_matrix;
glMatrixMode(GL_TEXTURE);
glLoadMatrixf( (float *)&texture_matrix);
// 開啟自動產生貼圖座標功能
// S/T/R分別代表貼圖座標的X/Y/Z軸
glEnable(GL_TEXTURE_GEN_S);
glEnable(GL_TEXTURE_GEN_T);
glEnable(GL_TEXTURE_GEN_R);
// 以光線的反射向量來做為貼圖座標
glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
glTexGeni(GL_R, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
Matrix4x4 identMatrix = Matrix4x4::IdentityMatrix();
glTexGenfv(GL_S, GL_OBJECT_PLANE, &identMatrix[0][0]);
glTexGenfv(GL_T, GL_OBJECT_PLANE, &identMatrix[1][0]);
glTexGenfv(GL_R, GL_OBJECT_PLANE, &identMatrix[2][0]);
// 畫出地表
g_Terrain_OpenGL.Render(0);
glLoadIdentity();
}
// 把背景backbuffer的畫面呈現出來
GutSwapBuffersOpenGL();
}