void FGLRenderer::RenderView (player_t* player)
{
OpenGLFrameBuffer* GLTarget = static_cast<OpenGLFrameBuffer*>(screen);
AActor *&LastCamera = GLTarget->LastCamera;
checkBenchActive();
if (player->camera != LastCamera)
{
// If the camera changed don't interpolate
// Otherwise there will be some not so nice effects.
R_ResetViewInterpolation();
LastCamera=player->camera;
}
gl_RenderState.SetVertexBuffer(mVBO);
GLRenderer->mVBO->Reset();
// reset statistics counters
ResetProfilingData();
// Get this before everything else
if (cl_capfps || r_NoInterpolate) r_TicFracF = 1.;
else r_TicFracF = I_GetTimeFrac (&r_FrameTime);
gl_frameMS = I_MSTime();
P_FindParticleSubsectors ();
if (!gl.legacyMode) GLRenderer->mLights->Clear();
// NoInterpolateView should have no bearing on camera textures, but needs to be preserved for the main view below.
bool saved_niv = NoInterpolateView;
NoInterpolateView = false;
// prepare all camera textures that have been used in the last frame
FCanvasTextureInfo::UpdateAll();
NoInterpolateView = saved_niv;
// now render the main view
float fovratio;
float ratio = WidescreenRatio;
if (WidescreenRatio >= 1.3f)
{
fovratio = 1.333333f;
}
else
{
fovratio = ratio;
}
SetFixedColormap (player);
// Check if there's some lights. If not some code can be skipped.
TThinkerIterator<ADynamicLight> it(STAT_DLIGHT);
GLRenderer->mLightCount = ((it.Next()) != NULL);
sector_t * viewsector = RenderViewpoint(player->camera, NULL, FieldOfView.Degrees, ratio, fovratio, true, true);
All.Unclock();
}
void FGLRenderer::WriteSavePic (player_t *player, FileWriter *file, int width, int height)
{
IntRect bounds;
bounds.left = 0;
bounds.top = 0;
bounds.width = width;
bounds.height = height;
// we must be sure the GPU finished reading from the buffer before we fill it with new data.
glFinish();
// Switch to render buffers dimensioned for the savepic
mBuffers = mSaveBuffers;
hw_ClearFakeFlat();
gl_RenderState.SetVertexBuffer(screen->mVertexData);
screen->mVertexData->Reset();
screen->mLights->Clear();
screen->mViewpoints->Clear();
// This shouldn't overwrite the global viewpoint even for a short time.
FRenderViewpoint savevp;
sector_t *viewsector = RenderViewpoint(savevp, players[consoleplayer].camera, &bounds, r_viewpoint.FieldOfView.Degrees, 1.6f, 1.6f, true, false);
glDisable(GL_STENCIL_TEST);
gl_RenderState.SetNoSoftLightLevel();
CopyToBackbuffer(&bounds, false);
// strictly speaking not needed as the glReadPixels should block until the scene is rendered, but this is to safeguard against shitty drivers
glFinish();
int numpixels = width * height;
uint8_t * scr = (uint8_t *)M_Malloc(numpixels * 3);
glReadPixels(0,0,width, height,GL_RGB,GL_UNSIGNED_BYTE,scr);
DoWriteSavePic(file, SS_RGB, scr, width, height, viewsector, true);
M_Free(scr);
// Switch back the screen render buffers
screen->SetViewportRects(nullptr);
mBuffers = mScreenBuffers;
}
void FGLRenderer::WriteSavePic (player_t *player, FileWriter *file, int width, int height)
{
GL_IRECT bounds;
bounds.left=0;
bounds.top=0;
bounds.width=width;
bounds.height=height;
glFlush();
SetFixedColormap(player);
gl_RenderState.SetVertexBuffer(mVBO);
GLRenderer->mVBO->Reset();
if (!gl.legacyMode) GLRenderer->mLights->Clear();
// Check if there's some lights. If not some code can be skipped.
TThinkerIterator<ADynamicLight> it(STAT_DLIGHT);
GLRenderer->mLightCount = ((it.Next()) != NULL);
sector_t *viewsector = RenderViewpoint(players[consoleplayer].camera, &bounds,
FieldOfView.Degrees, 1.6f, 1.6f, true, false);
glDisable(GL_STENCIL_TEST);
gl_RenderState.SetFixedColormap(CM_DEFAULT);
gl_RenderState.SetSoftLightLevel(-1);
screen->Begin2D(false);
if (!FGLRenderBuffers::IsEnabled())
{
DrawBlend(viewsector);
}
CopyToBackbuffer(&bounds, false);
glFlush();
byte * scr = (byte *)M_Malloc(width * height * 3);
glReadPixels(0,0,width, height,GL_RGB,GL_UNSIGNED_BYTE,scr);
M_CreatePNG (file, scr + ((height-1) * width * 3), NULL, SS_RGB, width, height, -width*3);
M_Free(scr);
}
void FGLRenderer::RenderTextureView(FCanvasTexture *tex, AActor *Viewpoint, double FOV)
{
// This doesn't need to clear the fake flat cache. It can be shared between camera textures and the main view of a scene.
FMaterial * gltex = FMaterial::ValidateTexture(tex, false);
int width = gltex->TextureWidth();
int height = gltex->TextureHeight();
StartOffscreen();
BindToFrameBuffer(gltex);
IntRect bounds;
bounds.left = bounds.top = 0;
bounds.width = FHardwareTexture::GetTexDimension(gltex->GetWidth());
bounds.height = FHardwareTexture::GetTexDimension(gltex->GetHeight());
FRenderViewpoint texvp;
RenderViewpoint(texvp, Viewpoint, &bounds, FOV, (float)width / height, (float)width / height, false, false);
EndOffscreen();
tex->SetUpdated(true);
static_cast<OpenGLFrameBuffer*>(screen)->camtexcount++;
}
sector_t *FGLRenderer::RenderView(player_t* player)
{
gl_RenderState.SetVertexBuffer(screen->mVertexData);
screen->mVertexData->Reset();
sector_t *retsec;
if (!V_IsHardwareRenderer())
{
if (swdrawer == nullptr) swdrawer = new SWSceneDrawer;
retsec = swdrawer->RenderView(player);
}
else
{
hw_ClearFakeFlat();
iter_dlightf = iter_dlight = draw_dlight = draw_dlightf = 0;
checkBenchActive();
// reset statistics counters
ResetProfilingData();
// Get this before everything else
if (cl_capfps || r_NoInterpolate) r_viewpoint.TicFrac = 1.;
else r_viewpoint.TicFrac = I_GetTimeFrac();
screen->mLights->Clear();
screen->mViewpoints->Clear();
// NoInterpolateView should have no bearing on camera textures, but needs to be preserved for the main view below.
bool saved_niv = NoInterpolateView;
NoInterpolateView = false;
// Shader start time does not need to be handled per level. Just use the one from the camera to render from.
gl_RenderState.CheckTimer(player->camera->Level->ShaderStartTime);
// prepare all camera textures that have been used in the last frame.
// This must be done for all levels, not just the primary one!
for (auto Level : AllLevels())
{
Level->canvasTextureInfo.UpdateAll([&](AActor *camera, FCanvasTexture *camtex, double fov)
{
RenderTextureView(camtex, camera, fov);
});
}
NoInterpolateView = saved_niv;
// now render the main view
float fovratio;
float ratio = r_viewwindow.WidescreenRatio;
if (r_viewwindow.WidescreenRatio >= 1.3f)
{
fovratio = 1.333333f;
}
else
{
fovratio = ratio;
}
retsec = RenderViewpoint(r_viewpoint, player->camera, NULL, r_viewpoint.FieldOfView.Degrees, ratio, fovratio, true, true);
}
All.Unclock();
return retsec;
}