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);
}
