void CShadowHandler::CreateShadows()
{
// NOTE:
// we unbind later in WorldDrawer::GenerateIBLTextures() to save render
// context switches (which are one of the slowest OpenGL operations!)
// together with VP restoration
fb.Bind();
glDisable(GL_BLEND);
glDisable(GL_LIGHTING);
glDisable(GL_ALPHA_TEST);
glDisable(GL_TEXTURE_2D);
glShadeModel(GL_FLAT);
glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
glDepthMask(GL_TRUE);
glEnable(GL_DEPTH_TEST);
glClear(GL_DEPTH_BUFFER_BIT);
CCamera* prvCam = CCamera::GetSetActiveCamera(CCamera::CAMTYPE_SHADOW);
CCamera* curCam = CCamera::GetActiveCamera();
SetShadowMapSizeFactors();
SetShadowMatrix(prvCam, curCam);
SetShadowCamera(curCam);
if (globalRendering->haveARB) {
// set the shadow-parameter registers
// NOTE: so long as any part of Spring rendering still uses
// ARB programs at run-time, these lines can not be removed
// (all ARB programs share the same environment)
glProgramEnvParameter4fARB(GL_VERTEX_PROGRAM_ARB, 16, shadowTexProjCenter.x, shadowTexProjCenter.y, 0.0f, 0.0f);
glProgramEnvParameter4fARB(GL_VERTEX_PROGRAM_ARB, 17, shadowTexProjCenter.z, shadowTexProjCenter.z, 0.0f, 0.0f);
glProgramEnvParameter4fARB(GL_VERTEX_PROGRAM_ARB, 18, shadowTexProjCenter.w, shadowTexProjCenter.w, 0.0f, 0.0f);
}
if (globalRendering->haveGLSL) {
for (int i = 0; i < SHADOWGEN_PROGRAM_LAST; i++) {
shadowGenProgs[i]->Enable();
shadowGenProgs[i]->SetUniform4fv(0, &shadowTexProjCenter.x);
shadowGenProgs[i]->Disable();
}
}
if ((sky->GetLight())->GetLightIntensity() > 0.0f)
DrawShadowPasses();
CCamera::SetActiveCamera(prvCam->GetCamType());
prvCam->Update();
glShadeModel(GL_SMOOTH);
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
}
// All Setup For OpenGL Goes Here
bool CGLLogoView::InitGL()
{
LoadTextures();
// what color to clear to in color buffer
glClearColor(1.0, 1.0, 1.0, 1.0);
// Cull backs of polygons
glCullFace(GL_BACK);
glFrontFace(GL_CCW);
glEnable(GL_CULL_FACE);
glEnable(GL_DEPTH_TEST);
glEnable(GL_LINE_SMOOTH);
glShadeModel(GL_SMOOTH); // Enable smooth shading
glHint(GL_LINE_SMOOTH_HINT, GL_DONT_CARE);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
// Enable a single OpenGL light.
glLightfv(GL_LIGHT0, GL_DIFFUSE, LightDiffuse);
glLightfv(GL_LIGHT0, GL_SPECULAR, LightSpecular);
glLightfv(GL_LIGHT0, GL_AMBIENT, LightAmbient);
glLightfv(GL_LIGHT0, GL_SPECULAR, LightSpecular);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glEnable(GL_TEXTURE_2D);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
quadric=gluNewQuadric();
gluQuadricNormals(quadric, GLU_SMOOTH);
gluQuadricTexture(quadric, GL_TRUE);
SetShadowMatrix(fShadowMatrix, LightPosition, Plane);
CreateLogo();
CreateGLFont();
return true;
}
