diff options
-rw-r--r-- | src/blitter/32bpp_anim.cpp | 21 |
1 files changed, 9 insertions, 12 deletions
diff --git a/src/blitter/32bpp_anim.cpp b/src/blitter/32bpp_anim.cpp index 0e2fe7969..290739e4e 100644 --- a/src/blitter/32bpp_anim.cpp +++ b/src/blitter/32bpp_anim.cpp @@ -10,9 +10,14 @@ static FBlitter_32bppAnim iFBlitter_32bppAnim; void Blitter_32bppAnim::Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom) { + if (bp->dst < _screen.dst_ptr || bp->dst > (uint32 *)_screen.dst_ptr + _screen.width * _screen.height) { + /* This means our output is not to the screen, so we can't be doing any animation stuff, so use our parent Draw() */ + Blitter_32bppOptimized::Draw(bp, mode, zoom); + return; + } const SpriteLoader::CommonPixel *src, *src_line; uint32 *dst, *dst_line; - uint8 *anim, *anim_line, *anim_end; + uint8 *anim, *anim_line; if (_screen.width != this->anim_buf_width || _screen.height != this->anim_buf_height) { /* The size of the screen changed; we can assume we can wipe all data from our buffer */ @@ -21,7 +26,6 @@ void Blitter_32bppAnim::Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomL this->anim_buf_width = _screen.width; this->anim_buf_height = _screen.height; } - anim_end = this->anim_buf + this->anim_buf_height * this->anim_buf_width - 1; /* Find where to start reading in the source sprite */ src_line = (const SpriteLoader::CommonPixel *)bp->sprite + (bp->skip_top * bp->sprite_width + bp->skip_left) * ScaleByZoom(1, zoom); @@ -37,9 +41,6 @@ void Blitter_32bppAnim::Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomL anim = anim_line; anim_line += this->anim_buf_width; - /* Don't allow values of 'anim' greater than 'anim_end' to avoid buffer overflows. - * This only happens when we are doing a big-screenshot, so it should be relative safe */ - if (anim >= anim_end || anim < this->anim_buf) anim = anim_end; for (int x = 0; x < bp->width; x++) { if (src->a == 0) { @@ -48,10 +49,8 @@ void Blitter_32bppAnim::Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomL dst += skip; /* Make sure the anim-buffer is cleared */ - if (anim < anim_end - skip) { - memset(anim, 0, skip); - anim += skip; - } + memset(anim, 0, skip); + anim += skip; x += skip - 1; src += ScaleByZoom(1, zoom) * skip; continue; @@ -89,9 +88,7 @@ void Blitter_32bppAnim::Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomL break; } dst++; - /* Don't increase the anim buffer anymore if we tend to run out of the buffer... - * This only happens when we are doing a big-screenshot, so it should be relative safe */ - if (anim < anim_end) anim++; + anim++; src += ScaleByZoom(1, zoom); } } |