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Simplify Flip Mode rendering code with SDL_RenderCopyEx

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Previously, Flip Mode rendering had to be complicated and allocate
another buffer to call FlipSurfaceVerticle, and it was just a mess.

Instead, why not just do SDL_RenderCopyEx, and let SDL flip the screen
for us? This ends up pretty massively simplifying the rendering code.
This commit is contained in:
Misa
2021-08-29 13:31:42 -07:00
parent 23a2f57a70
commit c58c357a81
4 changed files with 29 additions and 70 deletions
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74
desktop_version/src/Graphics.cpp
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@@ -3038,41 +3038,14 @@ void Graphics::setcol( int t )
void Graphics::menuoffrender(void)
{
SDL_Rect offsetRect1;
setRect (offsetRect1, 0, 0, backBuffer->w ,backBuffer->h);
const int usethisoffset = lerp(oldmenuoffset, menuoffset);
SDL_Rect offsetRect = {0, usethisoffset, backBuffer->w, backBuffer->h};
//put the back buffer in the menubuffer
BlitSurfaceStandard(backBuffer, NULL, menubuffer, NULL);
BlitSurfaceStandard(tempBuffer, NULL, backBuffer, NULL);
BlitSurfaceStandard(menubuffer, NULL, backBuffer, &offsetRect);
int usethisoffset = lerp(oldmenuoffset, menuoffset);
if(flipmode)
{
SDL_Surface* tempbufferFlipped = FlipSurfaceVerticle(tempBuffer);
//put the stored backbuffer in the backbuffer.
ClearSurface(backBuffer);
BlitSurfaceStandard(tempbufferFlipped, NULL, backBuffer, NULL);
SDL_FreeSurface(tempbufferFlipped);
SDL_Rect offsetRect;
setRect (offsetRect, 0, -usethisoffset, backBuffer->w ,backBuffer->h);
SDL_Surface* temp = FlipSurfaceVerticle(menubuffer);
BlitSurfaceStandard(temp,NULL,backBuffer,&offsetRect);
SDL_FreeSurface(temp);
}
else
{
//put the stored backbuffer in the backbuffer.
BlitSurfaceStandard(tempBuffer, NULL, backBuffer, NULL);
SDL_Rect offsetRect;
setRect (offsetRect, 0, usethisoffset, backBuffer->w ,backBuffer->h);
BlitSurfaceStandard(menubuffer,NULL,backBuffer,&offsetRect);
}
SDL_Rect rect;
setRect(rect, 0, 0, backBuffer->w, backBuffer->h);
screenbuffer->UpdateScreen(backBuffer,&rect);
screenbuffer->UpdateScreen(backBuffer, NULL);
ClearSurface(backBuffer);
}
@@ -3192,20 +3165,8 @@ void Graphics::flashlight(void)
void Graphics::screenshake(void)
{
if(flipmode)
{
SDL_Rect shakeRect;
setRect(shakeRect,screenshake_x, screenshake_y, backBuffer->w, backBuffer->h);
SDL_Surface* flipBackBuffer = FlipSurfaceVerticle(backBuffer);
screenbuffer->UpdateScreen( flipBackBuffer, &shakeRect);
SDL_FreeSurface(flipBackBuffer);
}
else
{
SDL_Rect shakeRect;
setRect(shakeRect,screenshake_x, screenshake_y, backBuffer->w, backBuffer->h);
screenbuffer->UpdateScreen( backBuffer, &shakeRect);
}
SDL_Rect shakeRect = {screenshake_x, screenshake_y, backBuffer->w, backBuffer->h};
screenbuffer->UpdateScreen(backBuffer, &shakeRect);
ClearSurface(backBuffer);
}
@@ -3218,27 +3179,12 @@ void Graphics::updatescreenshake(void)
void Graphics::render(void)
{
if(screenbuffer == NULL)
if (screenbuffer == NULL)
{
return;
}
if(flipmode)
{
SDL_Rect rect;
setRect(rect, 0, 0, backBuffer->w, backBuffer->h);
SDL_Surface* tempsurface = FlipSurfaceVerticle(backBuffer);
if(tempsurface != NULL)
{
screenbuffer->UpdateScreen( tempsurface, &rect);
SDL_FreeSurface(tempsurface);
}
}
else
{
SDL_Rect rect;
setRect(rect, 0, 0, backBuffer->w, backBuffer->h);
screenbuffer->UpdateScreen( backBuffer, &rect);
}
screenbuffer->UpdateScreen(backBuffer, NULL);
}
void Graphics::renderwithscreeneffects(void)