Go to the documentation of this file.00001
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00012 #include "../stdafx.h"
00013 #include "../zoom_func.h"
00014 #include "../settings_type.h"
00015 #include "../core/math_func.hpp"
00016 #include "8bpp_optimized.hpp"
00017
00019 static FBlitter_8bppOptimized iFBlitter_8bppOptimized;
00020
00021 void Blitter_8bppOptimized::Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom)
00022 {
00023
00024 const SpriteData *sprite_src = (const SpriteData *)bp->sprite;
00025 uint offset = sprite_src->offset[zoom];
00026
00027
00028 const uint8 *src = sprite_src->data + offset;
00029 uint8 *dst_line = (uint8 *)bp->dst + bp->top * bp->pitch + bp->left;
00030
00031
00032 for (int y = 0; y < bp->skip_top; y++) {
00033 for (;;) {
00034 uint trans = *src++;
00035 uint pixels = *src++;
00036 if (trans == 0 && pixels == 0) break;
00037 src += pixels;
00038 }
00039 }
00040
00041 const uint8 *src_next = src;
00042
00043 for (int y = 0; y < bp->height; y++) {
00044 uint8 *dst = dst_line;
00045 dst_line += bp->pitch;
00046
00047 uint skip_left = bp->skip_left;
00048 int width = bp->width;
00049
00050 for (;;) {
00051 src = src_next;
00052 uint trans = *src++;
00053 uint pixels = *src++;
00054 src_next = src + pixels;
00055 if (trans == 0 && pixels == 0) break;
00056 if (width <= 0) continue;
00057
00058 if (skip_left != 0) {
00059 if (skip_left < trans) {
00060 trans -= skip_left;
00061 skip_left = 0;
00062 } else {
00063 skip_left -= trans;
00064 trans = 0;
00065 }
00066 if (skip_left < pixels) {
00067 src += skip_left;
00068 pixels -= skip_left;
00069 skip_left = 0;
00070 } else {
00071 src += pixels;
00072 skip_left -= pixels;
00073 pixels = 0;
00074 }
00075 }
00076 if (skip_left != 0) continue;
00077
00078
00079 dst += trans;
00080 width -= trans;
00081 if (width <= 0 || pixels == 0) continue;
00082 pixels = min<uint>(pixels, (uint)width);
00083 width -= pixels;
00084
00085 switch (mode) {
00086 case BM_COLOUR_REMAP:
00087 case BM_CRASH_REMAP: {
00088 const uint8 *remap = bp->remap;
00089 do {
00090 uint m = remap[*src];
00091 if (m != 0) *dst = m;
00092 dst++; src++;
00093 } while (--pixels != 0);
00094 break;
00095 }
00096
00097 case BM_TRANSPARENT: {
00098 const uint8 *remap = bp->remap;
00099 src += pixels;
00100 do {
00101 *dst = remap[*dst];
00102 dst++;
00103 } while (--pixels != 0);
00104 break;
00105 }
00106
00107 default:
00108 memcpy(dst, src, pixels);
00109 dst += pixels; src += pixels;
00110 break;
00111 }
00112 }
00113 }
00114 }
00115
00116 Sprite *Blitter_8bppOptimized::Encode(const SpriteLoader::Sprite *sprite, AllocatorProc *allocator)
00117 {
00118
00119 uint memory = sizeof(SpriteData);
00120
00121 ZoomLevel zoom_min;
00122 ZoomLevel zoom_max;
00123
00124 if (sprite->type == ST_FONT) {
00125 zoom_min = ZOOM_LVL_NORMAL;
00126 zoom_max = ZOOM_LVL_NORMAL;
00127 } else {
00128 zoom_min = _settings_client.gui.zoom_min;
00129 zoom_max = _settings_client.gui.zoom_max;
00130 if (zoom_max == zoom_min) zoom_max = ZOOM_LVL_MAX;
00131 }
00132
00133 for (ZoomLevel i = zoom_min; i <= zoom_max; i++) {
00134 memory += sprite[i].width * sprite[i].height;
00135 }
00136
00137
00138 memory *= 5;
00139
00140
00141
00142
00143 static ReusableBuffer<byte> temp_buffer;
00144 SpriteData *temp_dst = (SpriteData *)temp_buffer.Allocate(memory);
00145 memset(temp_dst, 0, sizeof(*temp_dst));
00146 byte *dst = temp_dst->data;
00147
00148
00149 for (ZoomLevel i = zoom_min; i <= zoom_max; i++) {
00150
00151 uint offset = dst - temp_dst->data;
00152 temp_dst->offset[i] = offset;
00153
00154
00155 int scaled_height = sprite[i].height;
00156 int scaled_width = sprite[i].width;
00157
00158 for (int y = 0; y < scaled_height; y++) {
00159 uint trans = 0;
00160 uint pixels = 0;
00161 uint last_colour = 0;
00162 byte *count_dst = NULL;
00163
00164
00165 const SpriteLoader::CommonPixel *src = &sprite[i].data[y * sprite[i].width];
00166
00167 for (int x = 0; x < scaled_width; x++) {
00168 uint colour = src++->m;
00169
00170 if (last_colour == 0 || colour == 0 || pixels == 255) {
00171 if (count_dst != NULL) {
00172
00173 *count_dst = pixels;
00174 pixels = 0;
00175 count_dst = NULL;
00176 }
00177
00178 if (colour == 0 && trans != 255) {
00179 last_colour = 0;
00180 trans++;
00181 continue;
00182 }
00183
00184 *dst = trans;
00185 dst++;
00186 trans = 0;
00187
00188 count_dst = dst;
00189 dst++;
00190 }
00191 last_colour = colour;
00192 if (colour == 0) {
00193 trans++;
00194 } else {
00195 pixels++;
00196 *dst = colour;
00197 dst++;
00198 }
00199 }
00200
00201 if (count_dst != NULL) *count_dst = pixels;
00202
00203
00204 *dst = 0; dst++;
00205 *dst = 0; dst++;
00206 }
00207 }
00208
00209 uint size = dst - (byte *)temp_dst;
00210
00211
00212 assert(size < memory);
00213
00214
00215 Sprite *dest_sprite = (Sprite *)allocator(sizeof(*dest_sprite) + size);
00216
00217 dest_sprite->height = sprite->height;
00218 dest_sprite->width = sprite->width;
00219 dest_sprite->x_offs = sprite->x_offs;
00220 dest_sprite->y_offs = sprite->y_offs;
00221 memcpy(dest_sprite->data, temp_dst, size);
00222
00223 return dest_sprite;
00224 }