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Add a BltFast function with src and dst rect

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This commit is contained in:
Mathieu Schroeter 2017-10-21 15:30:37 +02:00
parent f4caf6a1b1
commit dfe3647a74
1 changed files with 38 additions and 33 deletions
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71
src/pixmap.cxx
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@ -101,13 +101,44 @@ CPixmap::Create (Point dim)
return true; return true;
} }
Sint32
CPixmap::BltFast (Sint32 dstCh, size_t srcCh, Rect dstR, Rect srcR)
{
Sint32 res;
SDL_Rect srcRect, dstRect;
srcRect.x = srcR.left;
srcRect.y = srcR.top;
srcRect.w = srcR.right - srcR.left;
srcRect.h = srcR.bottom - srcR.top;
dstRect.x = dstR.left;
dstRect.y = dstR.top;
dstRect.w = dstR.right - dstR.left;
dstRect.h = dstR.bottom - dstR.top;
if (dstCh < 0)
{
res = SDL_RenderCopy (
g_renderer, m_SDLTextureInfo[srcCh].texture, &srcRect, &dstRect);
}
else
{
SDL_SetRenderTarget (g_renderer, m_SDLTextureInfo[dstCh].texture);
res = SDL_RenderCopy (
g_renderer, m_SDLTextureInfo[srcCh].texture, &srcRect, &dstRect);
SDL_SetRenderTarget (g_renderer, nullptr);
}
return res;
}
// Effectue un appel BltFast. // Effectue un appel BltFast.
// Les modes sont 0=transparent, 1=opaque. // Les modes sont 0=transparent, 1=opaque.
Sint32 Sint32
CPixmap::BltFast (Sint32 chDst, size_t channel, Point dst, Rect rcRect) CPixmap::BltFast (Sint32 chDst, size_t channel, Point dst, Rect rcRect)
{ {
Sint32 res, limit; Sint32 limit;
// Effectue un peu de clipping. // Effectue un peu de clipping.
if (dst.x < m_clipRect.left) if (dst.x < m_clipRect.left)
@ -130,38 +161,12 @@ CPixmap::BltFast (Sint32 chDst, size_t channel, Point dst, Rect rcRect)
if (rcRect.left >= rcRect.right || rcRect.top >= rcRect.bottom) if (rcRect.left >= rcRect.right || rcRect.top >= rcRect.bottom)
return 0; return 0;
if (chDst < 0) Rect dstRect;
{ dstRect.left = dst.x;
SDL_Rect srcRect, dstRect; dstRect.top = dst.y;
srcRect.x = rcRect.left; dstRect.right = dstRect.left + rcRect.right - rcRect.left;
srcRect.y = rcRect.top; dstRect.bottom = dstRect.top + rcRect.bottom - rcRect.top;
srcRect.w = rcRect.right - rcRect.left; return this->BltFast (chDst, channel, dstRect, rcRect);
srcRect.h = rcRect.bottom - rcRect.top;
dstRect = srcRect;
dstRect.x = dst.x;
dstRect.y = dst.y;
res = SDL_RenderCopy (
g_renderer, m_SDLTextureInfo[channel].texture, &srcRect, &dstRect);
}
else
{
SDL_Rect srcRect, dstRect;
srcRect.x = rcRect.left;
srcRect.y = rcRect.top;
srcRect.w = rcRect.right - rcRect.left;
srcRect.h = rcRect.bottom - rcRect.top;
dstRect = srcRect;
dstRect.x = dst.x;
dstRect.y = dst.y;
SDL_SetRenderTarget (g_renderer, m_SDLTextureInfo[chDst].texture);
res = SDL_RenderCopy (
g_renderer, m_SDLTextureInfo[channel].texture, &srcRect, &dstRect);
SDL_SetRenderTarget (g_renderer, nullptr);
}
return res;
} }
// Effectue un appel BltFast. // Effectue un appel BltFast.