From dedb0033b3647d795a23118a22f227d7af33960d Mon Sep 17 00:00:00 2001 From: smatz Date: Tue, 17 Jun 2008 17:25:22 +0000 Subject: (svn r13551) -Codechange: store offsets to different zoom levels in a distinguished struct instead in the data stream for 8bpp-optimized --- src/blitter/8bpp_optimized.cpp | 18 +++++++++--------- src/blitter/8bpp_optimized.hpp | 5 +++++ 2 files changed, 14 insertions(+), 9 deletions(-) (limited to 'src/blitter') diff --git a/src/blitter/8bpp_optimized.cpp b/src/blitter/8bpp_optimized.cpp index 05e4bf257..3fb20e74b 100644 --- a/src/blitter/8bpp_optimized.cpp +++ b/src/blitter/8bpp_optimized.cpp @@ -14,10 +14,11 @@ static FBlitter_8bppOptimized iFBlitter_8bppOptimized; void Blitter_8bppOptimized::Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom) { /* Find the offset of this zoom-level */ - uint offset = ((const uint8 *)bp->sprite)[(int)(zoom - ZOOM_LVL_BEGIN) * 2] | ((const byte *)bp->sprite)[(int)(zoom - ZOOM_LVL_BEGIN) * 2 + 1] << 8; + const SpriteData *sprite_src = (const SpriteData *)bp->sprite; + uint offset = sprite_src->offset[zoom]; /* Find where to start reading in the source sprite */ - const uint8 *src = (const uint8 *)bp->sprite + offset; + const uint8 *src = sprite_src->data + offset; uint8 *dst_line = (uint8 *)bp->dst + bp->top * bp->pitch + bp->left; /* Skip over the top lines in the source image */ @@ -101,7 +102,7 @@ void Blitter_8bppOptimized::Draw(Blitter::BlitterParams *bp, BlitterMode mode, Z Sprite *Blitter_8bppOptimized::Encode(SpriteLoader::Sprite *sprite, Blitter::AllocatorProc *allocator) { /* Make memory for all zoom-levels */ - uint memory = (int)(ZOOM_LVL_END - ZOOM_LVL_BEGIN) * sizeof(uint16); + uint memory = sizeof(SpriteData); for (ZoomLevel i = ZOOM_LVL_BEGIN; i < ZOOM_LVL_END; i++) { memory += UnScaleByZoom(sprite->height, i) * UnScaleByZoom(sprite->width, i); @@ -109,15 +110,14 @@ Sprite *Blitter_8bppOptimized::Encode(SpriteLoader::Sprite *sprite, Blitter::All /* We have no idea how much memory we really need, so just guess something */ memory *= 5; - byte *temp_dst = MallocT(memory); - byte *dst = &temp_dst[(ZOOM_LVL_END - ZOOM_LVL_BEGIN) * 2]; + SpriteData *temp_dst = (SpriteData *)MallocT(memory); + byte *dst = temp_dst->data; /* Make the sprites per zoom-level */ for (ZoomLevel i = ZOOM_LVL_BEGIN; i < ZOOM_LVL_END; i++) { /* Store the index table */ - uint index = dst - temp_dst; - temp_dst[i * 2] = index & 0xFF; - temp_dst[i * 2 + 1] = (index >> 8) & 0xFF; + uint offset = dst - temp_dst->data; + temp_dst->offset[i] = offset; /* cache values, because compiler can't cache it */ int scaled_height = UnScaleByZoom(sprite->height, i); @@ -179,7 +179,7 @@ Sprite *Blitter_8bppOptimized::Encode(SpriteLoader::Sprite *sprite, Blitter::All } } - uint size = dst - temp_dst; + uint size = dst - (byte *)temp_dst; /* Safety check, to make sure we guessed the size correctly */ assert(size < memory); diff --git a/src/blitter/8bpp_optimized.hpp b/src/blitter/8bpp_optimized.hpp index d377b522a..85a7b06ad 100644 --- a/src/blitter/8bpp_optimized.hpp +++ b/src/blitter/8bpp_optimized.hpp @@ -10,6 +10,11 @@ class Blitter_8bppOptimized : public Blitter_8bppBase { public: + struct SpriteData { + uint32 offset[ZOOM_LVL_COUNT]; ///< offsets (from .data) to streams for different zoom levels + byte data[VARARRAY_SIZE]; ///< data, all zoomlevels + }; + /* virtual */ void Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom); /* virtual */ Sprite *Encode(SpriteLoader::Sprite *sprite, Blitter::AllocatorProc *allocator); -- cgit v1.2.3-54-g00ecf