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Draw.cpp fix and optimisations

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For whatever reason, alpha blending is enabled by default on surfaces.
Disabling it should result in faster blits, and also follow DirectDraw's
behaviour more closely.
This commit is contained in:
Clownacy 2019-02-14 06:47:15 +00:00
parent e1cd4cf8d8
commit 3b395c2639
1 changed files with 5 additions and 2 deletions
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7
src/Draw.cpp
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@ -155,6 +155,7 @@ bool MakeSurface_Generic(int bxsize, int bysize, int surf_no)
{
//Create surface
surf[surf_no].surface = SDL_CreateRGBSurfaceWithFormat(0, bxsize * magnification, bysize * magnification, 0, SDL_PIXELFORMAT_RGBA32);
SDL_SetSurfaceBlendMode(surf[surf_no].surface, SDL_BLENDMODE_NONE);
if (surf[surf_no].surface == NULL)
{
@ -224,7 +225,7 @@ static bool LoadBitmap(SDL_RWops *fp, int surf_no, bool create_surface)
}
else
{
SDL_Surface *surface = SDL_LoadBMP_RW(fp, 1);
SDL_Surface *surface = SDL_LoadBMP_RW(fp, 0);
if (surface == NULL)
{
@ -238,7 +239,6 @@ static bool LoadBitmap(SDL_RWops *fp, int surf_no, bool create_surface)
{
SDL_Rect dst_rect = {0, 0, surface->w, surface->h};
SDL_BlitSurface(surface, NULL, surf[surf_no].surface, &dst_rect);
SDL_FreeSurface(surface);
surf[surf_no].needs_updating = true;
printf(" ^ Successfully loaded\n");
success = true;
@ -287,6 +287,8 @@ static bool LoadBitmap(SDL_RWops *fp, int surf_no, bool create_surface)
}
}
fp->close(fp);
return success;
}
@ -379,6 +381,7 @@ void BackupSurface(int surf_no, RECT *rect)
//Get texture of what's currently rendered on screen
SDL_Surface *surface = SDL_CreateRGBSurfaceWithFormat(0, w, h, 0, SDL_PIXELFORMAT_RGBA32);
SDL_SetSurfaceBlendMode(surface, SDL_BLENDMODE_NONE);
SDL_RenderReadPixels(gRenderer, NULL, SDL_PIXELFORMAT_RGBA32, surface->pixels, surface->pitch);
//Get rects