1 /* $Id$ */ |
1 /* $Id$ */ |
2 |
2 |
3 /** @file 8bpp_optimized.cpp */ |
3 /** @file 8bpp_optimized.cpp */ |
4 |
4 |
5 #include "../stdafx.h" |
5 #include "../stdafx.h" |
6 #include "../zoom.hpp" |
6 #include "../zoom_func.h" |
7 #include "../gfx.h" |
|
8 #include "../debug.h" |
7 #include "../debug.h" |
|
8 #include "../core/alloc_func.hpp" |
9 #include "8bpp_optimized.hpp" |
9 #include "8bpp_optimized.hpp" |
10 |
10 |
11 static FBlitter_8bppOptimized iFBlitter_8bppOptimized; |
11 static FBlitter_8bppOptimized iFBlitter_8bppOptimized; |
12 |
12 |
13 void Blitter_8bppOptimized::Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom) |
13 void Blitter_8bppOptimized::Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom) |
15 const uint8 *src, *src_next; |
15 const uint8 *src, *src_next; |
16 uint8 *dst, *dst_line; |
16 uint8 *dst, *dst_line; |
17 uint offset = 0; |
17 uint offset = 0; |
18 |
18 |
19 /* Find the offset of this zoom-level */ |
19 /* Find the offset of this zoom-level */ |
20 offset = ((const uint8 *)bp->sprite)[(int)zoom * 2] | ((const byte *)bp->sprite)[(int)zoom * 2 + 1] << 8; |
20 offset = ((const uint8 *)bp->sprite)[(int)(zoom - ZOOM_LVL_BEGIN) * 2] | ((const byte *)bp->sprite)[(int)(zoom - ZOOM_LVL_BEGIN) * 2 + 1] << 8; |
21 |
21 |
22 /* Find where to start reading in the source sprite */ |
22 /* Find where to start reading in the source sprite */ |
23 src = (const uint8 *)bp->sprite + offset; |
23 src = (const uint8 *)bp->sprite + offset; |
24 dst_line = (uint8 *)bp->dst + bp->top * bp->pitch + bp->left; |
24 dst_line = (uint8 *)bp->dst + bp->top * bp->pitch + bp->left; |
25 |
25 |
108 byte *temp_dst; |
108 byte *temp_dst; |
109 uint memory = 0; |
109 uint memory = 0; |
110 uint index = 0; |
110 uint index = 0; |
111 |
111 |
112 /* Make memory for all zoom-levels */ |
112 /* Make memory for all zoom-levels */ |
113 memory += (int)ZOOM_LVL_END * sizeof(uint16); |
113 memory += (int)(ZOOM_LVL_END - ZOOM_LVL_BEGIN) * sizeof(uint16); |
114 for (int i = 0; i < (int)ZOOM_LVL_END; i++) { |
114 for (ZoomLevel i = ZOOM_LVL_BEGIN; i < ZOOM_LVL_END; i++) { |
115 memory += UnScaleByZoom(sprite->height, (ZoomLevel)i) * UnScaleByZoom(sprite->width, (ZoomLevel)i); |
115 memory += UnScaleByZoom(sprite->height, i) * UnScaleByZoom(sprite->width, i); |
116 index += 2; |
116 index += 2; |
117 } |
117 } |
118 |
118 |
119 /* We have no idea how much memory we really need, so just guess something */ |
119 /* We have no idea how much memory we really need, so just guess something */ |
120 memory *= 5; |
120 memory *= 5; |
121 temp_dst = MallocT<byte>(memory); |
121 temp_dst = MallocT<byte>(memory); |
122 |
122 |
123 /* Make the sprites per zoom-level */ |
123 /* Make the sprites per zoom-level */ |
124 for (int i = 0; i < (int)ZOOM_LVL_END; i++) { |
124 for (ZoomLevel i = ZOOM_LVL_BEGIN; i < ZOOM_LVL_END; i++) { |
125 /* Store the scaled image */ |
125 /* Store the scaled image */ |
126 const SpriteLoader::CommonPixel *src; |
126 const SpriteLoader::CommonPixel *src; |
127 |
127 |
128 /* Store the index table */ |
128 /* Store the index table */ |
129 temp_dst[i * 2] = index & 0xFF; |
129 temp_dst[i * 2] = index & 0xFF; |
130 temp_dst[i * 2 + 1] = (index >> 8) & 0xFF; |
130 temp_dst[i * 2 + 1] = (index >> 8) & 0xFF; |
131 |
131 |
132 byte *dst = &temp_dst[index]; |
132 byte *dst = &temp_dst[index]; |
133 |
133 |
134 for (int y = 0; y < UnScaleByZoom(sprite->height, (ZoomLevel)i); y++) { |
134 for (int y = 0; y < UnScaleByZoom(sprite->height, i); y++) { |
135 uint trans = 0; |
135 uint trans = 0; |
136 uint pixels = 0; |
136 uint pixels = 0; |
137 uint last_color = 0; |
137 uint last_color = 0; |
138 uint count_index = 0; |
138 uint count_index = 0; |
139 uint rx = 0; |
139 uint rx = 0; |
140 src = &sprite->data[ScaleByZoom(y, (ZoomLevel)i) * sprite->width]; |
140 src = &sprite->data[ScaleByZoom(y, i) * sprite->width]; |
141 |
141 |
142 for (int x = 0; x < UnScaleByZoom(sprite->width, (ZoomLevel)i); x++) { |
142 for (int x = 0; x < UnScaleByZoom(sprite->width, i); x++) { |
143 uint color = 0; |
143 uint color = 0; |
144 |
144 |
145 /* Get the color keeping in mind the zoom-level */ |
145 /* Get the color keeping in mind the zoom-level */ |
146 for (int j = 0; j < ScaleByZoom(1, (ZoomLevel)i); j++) { |
146 for (int j = 0; j < ScaleByZoom(1, i); j++) { |
147 if (src->m != 0) color = src->m; |
147 if (src->m != 0) color = src->m; |
148 src++; |
148 src++; |
149 rx++; |
149 rx++; |
150 /* Because of the scaling it might happen we read outside the buffer. Avoid that. */ |
150 /* Because of the scaling it might happen we read outside the buffer. Avoid that. */ |
151 if (rx == sprite->width) break; |
151 if (rx == sprite->width) break; |