Graphics::ShaderProgram* ShaderManager::GetNewShaderProgram(const istring &filename)
{
auto strings = Utility::File::ParseToStrings(filename);
auto shader = new Graphics::ShaderProgram();
shader->CreateProgram();
for (auto str : strings)
{
auto type = str[0];
auto sfile = str.substr(2);
switch (type)
{
case 'F':
shader->CompileShader(sfile.c_str(), GL_FRAGMENT_SHADER, false);
break;
case 'V':
shader->CompileShader(sfile.c_str(), GL_VERTEX_SHADER, false);
break;
default:
std::cout << "Invalid shader Type=[" << type << "] specified in FileName=[" << filename << "]";
return nullptr;
}
}
shader->LinkProgram();
shader->SetShaderName(filename);
return shader;
}
CQuadMT::CQuadMT()
{
m_iNumVtx = QUAD_NUM;
m_pPoints = NULL; m_pNormals = NULL; m_pTex1 = NULL;
m_pPoints = new vec4[m_iNumVtx];
m_pNormals = new vec3[m_iNumVtx];
m_pColors = new vec4[m_iNumVtx];
m_pTex1 = new vec2[m_iNumVtx]; // 產生所需的貼圖座標
m_pTex2 = new vec2[m_iNumVtx]; // 產生 light map 所需的貼圖座標
m_pPoints[0] = vec4( -0.5f, 0.0f, 0.5f, 1.0f);
m_pPoints[1] = vec4( 0.5f, 0.0f, 0.5f, 1.0f);
m_pPoints[2] = vec4( 0.5f, 0.0f, -0.5f, 1.0f);
m_pPoints[3] = vec4( -0.5f, 0.0f, 0.5f, 1.0f);
m_pPoints[4] = vec4( 0.5f, 0.0f, -0.5f, 1.0f);
m_pPoints[5] = vec4( -0.5f, 0.0f, -0.5f, 1.0f);
m_pNormals[0] = vec3( 0, 1.0f, 0); // Normal Vector 的 W 為 0
m_pNormals[1] = vec3( 0, 1.0f, 0);
m_pNormals[2] = vec3( 0, 1.0f, 0);
m_pNormals[3] = vec3( 0, 1.0f, 0);
m_pNormals[4] = vec3( 0, 1.0f, 0);
m_pNormals[5] = vec3( 0, 1.0f, 0);
m_pColors[0] = vec4( 1.0f, 1.0f, 1.0f, 1.0f); // (r, g, b, a)
m_pColors[1] = vec4( 1.0f, 1.0f, 1.0f, 1.0f);
m_pColors[2] = vec4( 1.0f, 1.0f, 1.0f, 1.0f);
m_pColors[3] = vec4( 1.0f, 1.0f, 1.0f, 1.0f);
m_pColors[4] = vec4( 1.0f, 1.0f, 1.0f, 1.0f);
m_pColors[5] = vec4( 1.0f, 1.0f, 1.0f, 1.0f);
m_pTex1[0] = vec2(0.0f, 0.0f);
m_pTex1[1] = vec2(1.0f, 0.0f);
m_pTex1[2] = vec2(1.0f, 1.0f);
m_pTex1[3] = vec2(0.0f, 0.0f);
m_pTex1[4] = vec2(1.0f, 1.0f);
m_pTex1[5] = vec2(0.0f, 1.0f);
m_pTex2[0] = vec2(0.0f, 0.0f);
m_pTex2[1] = vec2(1.0f, 0.0f);
m_pTex2[2] = vec2(1.0f, 1.0f);
m_pTex2[3] = vec2(0.0f, 0.0f);
m_pTex2[4] = vec2(1.0f, 1.0f);
m_pTex2[5] = vec2(0.0f, 1.0f);
for( int i = 0 ; i < m_iNumVtx ; i++ ) m_pColors[i] = vec4(-1.0f,-1.0f,-1.0f,1.0f);
SetShaderName("vsLightMapping.glsl", "fsLightMapping.glsl");
// Create and initialize a buffer object ，將此部分的設定移入 SetShader 中
// CreateBufferObject();
}
CWireSphere::CWireSphere(const GLfloat fRadius, const int iSlices, const int iStacks)
{
GLfloat drho = (GLfloat)(3.141592653589) / (GLfloat) iStacks;
GLfloat dtheta = 2.0f * (GLfloat)(3.141592653589) / (GLfloat) iSlices;
GLfloat ds = 1.0f / (GLfloat) iSlices;
GLfloat dt = 1.0f / (GLfloat) iStacks;
GLfloat t = 1.0f;
GLfloat s = 0.0f;
GLint i, j; // Looping variables
int idx = 0; // 儲存 vertex 順序的索引值
m_fRadius = fRadius;
m_iSlices = iSlices;
m_iStacks = iStacks;
m_iNumVtx = iStacks*(2*(iSlices+1));
m_pPoints = NULL; m_pNormals = NULL; m_pTex1 = NULL;
m_pPoints = new vec4[m_iNumVtx];
m_pNormals = new vec3[m_iNumVtx];
m_pColors = new vec4[m_iNumVtx];
m_pTex1 = new vec2[m_iNumVtx];
for (i = 0; i < iStacks; i++ ) {
GLfloat rho = (GLfloat)i * drho;
GLfloat srho = (GLfloat)(sin(rho));
GLfloat crho = (GLfloat)(cos(rho));
GLfloat srhodrho = (GLfloat)(sin(rho + drho));
GLfloat crhodrho = (GLfloat)(cos(rho + drho));
// Many sources of OpenGL sphere drawing code uses a triangle fan
// for the caps of the sphere. This however introduces texturing
// artifacts at the poles on some OpenGL implementations
s = 0.0f;
for ( j = 0; j <= iSlices; j++) {
GLfloat theta = (j == iSlices) ? 0.0f : j * dtheta;
GLfloat stheta = (GLfloat)(-sin(theta));
GLfloat ctheta = (GLfloat)(cos(theta));
GLfloat x = stheta * srho;
GLfloat y = ctheta * srho;
GLfloat z = crho;
m_pPoints[idx].x = x * m_fRadius;
m_pPoints[idx].y = y * m_fRadius;
m_pPoints[idx].z = z * m_fRadius;
m_pPoints[idx].w = 1;
m_pNormals[idx].x = x;
m_pNormals[idx].y = y;
m_pNormals[idx].z = z;
m_pTex1[idx].x = s;
m_pTex1[idx].y = t; // 設定貼圖座標
idx++;
x = stheta * srhodrho;
y = ctheta * srhodrho;
z = crhodrho;
m_pPoints[idx].x = x * m_fRadius;
m_pPoints[idx].y = y * m_fRadius;
m_pPoints[idx].z = z * m_fRadius;
m_pPoints[idx].w = 1;
m_pNormals[idx].x = x;
m_pNormals[idx].y = y;
m_pNormals[idx].z = z;
m_pTex1[idx].x = s;
m_pTex1[idx].y = t - dt; // 設定貼圖座標
idx++;
s += ds;
}
t -= dt;
}
// 預設將所有的面都設定成灰色
for( int i = 0 ; i < m_iNumVtx ; i++ ) m_pColors[i] = vec4(-1.0f,-1.0f,-1.0f,1.0f);
#ifdef LIGHTING_WITHCPU
// Default Set shader's name
SetShaderName("vsLighting_CPU.glsl", "fsLighting_CPU.glsl");
#else // lighting with GPU
#ifdef PERVERTEX_LIGHTING
SetShaderName("vsLighting_GPU.glsl", "fsLighting_GPU.glsl");
#else
SetShaderName("vsPerPixelLighting.glsl", "fsPerPixelLighting.glsl");
#endif
#endif
// Create and initialize a buffer object ，將此部分的設定移入 SetShader 中
// CreateBufferObject();
// 設定材質
SetMaterials(vec4(0), vec4(0.5f, 0.5f, 0.5f, 1), vec4(1.0f, 1.0f, 1.0f, 1.0f));
SetKaKdKsShini(0, 0.8f, 0.2f, 1);
}
CQuad::CQuad()
{
m_iNumVtx = QUAD_NUM;
m_pPoints = NULL; m_pNormals = NULL; m_pTex1 = NULL;
m_pPoints = new vec4[m_iNumVtx];
m_pNormals = new vec3[m_iNumVtx];
m_pColors = new vec4[m_iNumVtx];
m_pTex1 = new vec2[m_iNumVtx]; // 產生所需的貼圖座標
#if MULTITEXTURE >= LIGHT_MAP
m_pTex2 = new vec2[m_iNumVtx]; // 產生 light map 所需的貼圖座標
#endif
#if MULTITEXTURE >= NORMAL_MAP
m_pTex3 = new vec2[m_iNumVtx]; // 產生 normal map 所需的貼圖座標
// 產生所需要的 Tanget vector for each vertex
m_pTangentV = new vec3[m_iNumVtx];
#endif
m_pPoints[0] = vec4( -0.5f, 0.0f, 0.5f, 1.0f);
m_pPoints[1] = vec4( 0.5f, 0.0f, 0.5f, 1.0f);
m_pPoints[2] = vec4( 0.5f, 0.0f, -0.5f, 1.0f);
m_pPoints[3] = vec4( -0.5f, 0.0f, 0.5f, 1.0f);
m_pPoints[4] = vec4( 0.5f, 0.0f, -0.5f, 1.0f);
m_pPoints[5] = vec4( -0.5f, 0.0f, -0.5f, 1.0f);
m_pNormals[0] = vec3( 0, 1.0f, 0); // Normal Vector 的 W 為 0
m_pNormals[1] = vec3( 0, 1.0f, 0);
m_pNormals[2] = vec3( 0, 1.0f, 0);
m_pNormals[3] = vec3( 0, 1.0f, 0);
m_pNormals[4] = vec3( 0, 1.0f, 0);
m_pNormals[5] = vec3( 0, 1.0f, 0);
m_pColors[0] = vec4( 1.0f, 1.0f, 1.0f, 1.0f); // (r, g, b, a)
m_pColors[1] = vec4( 1.0f, 1.0f, 1.0f, 1.0f);
m_pColors[2] = vec4( 1.0f, 1.0f, 1.0f, 1.0f);
m_pColors[3] = vec4( 1.0f, 1.0f, 1.0f, 1.0f);
m_pColors[4] = vec4( 1.0f, 1.0f, 1.0f, 1.0f);
m_pColors[5] = vec4( 1.0f, 1.0f, 1.0f, 1.0f);
m_pTex1[0] = vec2(0.0f, 0.0f);
m_pTex1[1] = vec2(1.0f, 0.0f);
m_pTex1[2] = vec2(1.0f, 1.0f);
m_pTex1[3] = vec2(0.0f, 0.0f);
m_pTex1[4] = vec2(1.0f, 1.0f);
m_pTex1[5] = vec2(0.0f, 1.0f);
#if MULTITEXTURE >= LIGHT_MAP
m_pTex2[0] = vec2(0.0f, 0.0f);
m_pTex2[1] = vec2(1.0f, 0.0f);
m_pTex2[2] = vec2(1.0f, 1.0f);
m_pTex2[3] = vec2(0.0f, 0.0f);
m_pTex2[4] = vec2(1.0f, 1.0f);
m_pTex2[5] = vec2(0.0f, 1.0f);
#endif
#if MULTITEXTURE >= NORMAL_MAP
m_pTex3[0] = vec2(0.0f, 0.0f);
m_pTex3[1] = vec2(1.0f, 0.0f);
m_pTex3[2] = vec2(1.0f, 1.0f);
m_pTex3[3] = vec2(0.0f, 0.0f);
m_pTex3[4] = vec2(1.0f, 1.0f);
m_pTex3[5] = vec2(0.0f, 1.0f);
// 計算 tangent vector
for (int i = 0; i < 6; i += 3) { // 三個 vertex 一組
float dU1 = m_pTex1[i + 1].x - m_pTex1[i].x;
float dV1 = m_pTex1[i + 1].y - m_pTex1[i].y;
float dU2 = m_pTex1[i + 2].x - m_pTex1[i].x;
float dV2 = m_pTex1[i + 2].y - m_pTex1[i].y;
float f = 1.0f/(dU1 * dV2 - dU2*dV1);
vec4 E1 = m_pPoints[i + 1] - m_pPoints[i];
vec4 E2 = m_pPoints[i + 2] - m_pPoints[i];
vec3 tangent;
tangent.x = f*(dV2 * E1.x + E2.x * (-dV1));
tangent.y = f*(dV2 * E1.y + E2.y * (-dV1));
tangent.z = f*(dV2 * E1.z + E2.z * (-dV1));
m_pTangentV[i] += tangent;
m_pTangentV[i + 1] += tangent;
m_pTangentV[i + 2] = tangent;
}
for (int i = 0; i < 6; i++)
m_pTangentV[i] = normalize(m_pTangentV[i]);
#endif
for( int i = 0 ; i < m_iNumVtx ; i++ ) m_pColors[i] = vec4(-1.0f,-1.0f,-1.0f,1.0f);
#ifdef PERVERTEX_LIGHTING
SetShaderName("vsPerVtxLighting.glsl", "fsPerVtxLighting.glsl");
#else
SetShaderName("vsPerPixelLighting.glsl", "fsPerPixelLighting.glsl");
#endif
}
