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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6865 | serge | 1 | #include |
| 2 | #include |
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| 3 | #include "pxdraw.h" |
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| 4 | #include "internal.h" |
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| 5 | |||
| 6 | ctx_t* create_context(int x, int y, int width, int height) |
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| 7 | { |
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| 8 | ctx_t *ctx; |
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| 9 | |||
| 10 | ctx = malloc(sizeof(ctx_t)); |
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| 11 | if (ctx == NULL) |
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| 12 | goto err_0; |
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| 13 | |||
| 14 | ctx->pitch = ALIGN(width * sizeof(color_t), 16); |
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| 15 | ctx->size = ALIGN(ctx->pitch * height, 4096); |
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| 16 | |||
| 17 | ctx->buffer = user_alloc(ctx->size+4096); |
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| 18 | if (ctx->buffer == NULL) |
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| 19 | goto err_1; |
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| 20 | |||
| 21 | ctx->x = x; |
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| 22 | ctx->y = y; |
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| 23 | ctx->width = width; |
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| 24 | ctx->height = height; |
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| 25 | |||
| 26 | ctx->rc.l = 0; |
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| 27 | ctx->rc.t = 0; |
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| 28 | ctx->rc.r = width; |
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| 29 | ctx->rc.b = height; |
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| 30 | |||
| 31 | ctx->rcu.l = 0; |
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| 32 | ctx->rcu.t = 0; |
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| 33 | ctx->rcu.r = ctx->width; |
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| 34 | ctx->rcu.b = ctx->height; |
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| 35 | ctx->dirty = 1; |
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| 36 | |||
| 37 | __builtin_cpu_init (); |
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| 38 | if (__builtin_cpu_supports ("sse2")) |
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| 39 | ctx->px_rect_simd = px_rect_xmm; |
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| 40 | else if (__builtin_cpu_supports ("mmx")) |
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| 41 | ctx->px_rect_simd = px_rect_mmx; |
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| 42 | else |
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| 43 | ctx->px_rect_simd = px_rect_alu; |
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| 44 | |||
| 45 | if (__builtin_cpu_supports ("sse2")) |
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| 46 | ctx->px_glyph = px_glyph_sse; |
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| 47 | else |
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| 48 | ctx->px_glyph = px_glyph_alu; |
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| 49 | |||
| 50 | return ctx; |
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| 51 | |||
| 52 | err_1: |
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| 53 | free(ctx); |
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| 54 | err_0: |
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| 55 | return NULL; |
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| 56 | }; |
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| 57 | |||
| 58 | int resize_context(ctx_t *ctx, int width, int height) |
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| 59 | { |
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| 60 | int size; |
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| 61 | int pitch; |
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| 62 | |||
| 63 | pitch = ALIGN(width * sizeof(color_t), 16); |
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| 64 | size = ALIGN(pitch * height, 4096); |
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| 65 | |||
| 66 | if (size > ctx->size) |
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| 67 | { |
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| 68 | ctx->buffer = user_realloc(ctx->buffer, size); /* grow buffer */ |
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| 69 | if (ctx->buffer == NULL) |
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| 70 | return -1; |
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| 71 | |||
| 72 | ctx->size = size; |
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| 73 | } |
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| 74 | else if (size < ctx->size) |
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| 75 | user_unmap(ctx->buffer, size, ctx->size - size); /* unmap unused pages */ |
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| 76 | |||
| 77 | ctx->width = width; |
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| 78 | ctx->height = height; |
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| 79 | ctx->pitch = pitch; |
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| 80 | |||
| 81 | ctx->rc.l = 0; |
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| 82 | ctx->rc.t = 0; |
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| 83 | ctx->rc.r = width; |
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| 84 | ctx->rc.b = height; |
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| 85 | |||
| 86 | ctx->rcu.l = ctx->rcu.t = 0; |
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| 87 | ctx->rcu.r = ctx->rcu.b = 0; |
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| 88 | |||
| 89 | return 0; |
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| 90 | }; |
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| 91 | |||
| 92 | void clear_context(ctx_t *ctx, color_t color) |
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| 93 | { |
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| 94 | size_t size; |
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| 95 | |||
| 96 | size = ctx->pitch * ctx->height; |
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| 97 | |||
| 98 | if (size >= 1024) |
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| 99 | ctx->px_rect_simd(ctx->buffer, ctx->pitch, ctx->width, ctx->height, color); |
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| 100 | else |
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| 101 | px_rect_alu(ctx->buffer, ctx->pitch, ctx->width, ctx->height, color); |
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| 102 | |||
| 103 | ctx->rcu.l = 0; |
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| 104 | ctx->rcu.t = 0; |
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| 105 | ctx->rcu.r = ctx->width; |
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| 106 | ctx->rcu.b = ctx->height; |
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| 107 | ctx->dirty = 1; |
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| 108 | }; |
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| 109 | |||
| 110 | void show_context(ctx_t *ctx) |
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| 111 | { |
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| 112 | struct blit_call bc; |
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| 113 | int ret; |
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| 114 | |||
| 115 | bc.dstx = ctx->x; |
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| 116 | bc.dsty = ctx->y; |
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| 117 | bc.w = ctx->width; |
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| 118 | bc.h = ctx->height; |
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| 119 | bc.srcx = 0; |
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| 120 | bc.srcy = 0; |
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| 121 | bc.srcw = ctx->width; |
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| 122 | bc.srch = ctx->height; |
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| 123 | bc.stride = ctx->pitch; |
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| 124 | bc.bitmap = ctx->buffer; |
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| 125 | |||
| 126 | __asm__ __volatile__( |
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| 127 | "int $0x40":"=a"(ret):"a"(73), "b"(0x00), |
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| 128 | "c"(&bc):"memory"); |
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| 129 | |||
| 130 | ctx->dirty = 0; |
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| 131 | }; |
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| 132 | |||
| 133 | void scroll_context(ctx_t *ctx, int dst_y, int src_y, int rows) |
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| 134 | { |
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| 135 | char *dst; |
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| 136 | char *src; |
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| 137 | |||
| 138 | dst = ctx->buffer + dst_y * ctx->pitch; |
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| 139 | src = ctx->buffer + src_y * ctx->pitch; |
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| 140 | |||
| 141 | __builtin_memmove(dst, src, rows * ctx->pitch); |
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| 142 | ctx->dirty = 1; |
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| 143 | } |
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| 144 | |||
| 145 | static int clip_rect(const rect_t *clip, rect_t *rc) |
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| 146 | { |
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| 147 | if (rc->l > rc->r) |
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| 148 | return 1; |
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| 149 | if (rc->t > rc->b) |
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| 150 | return 1; |
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| 151 | |||
| 152 | if (rc->l < clip->l) |
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| 153 | rc->l = clip->l; |
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| 154 | else if (rc->l >= clip->r) |
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| 155 | return 1; |
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| 156 | |||
| 157 | if (rc->t < clip->t) |
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| 158 | rc->t = clip->t; |
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| 159 | else if (rc->t >= clip->b) |
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| 160 | return 1; |
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| 161 | |||
| 162 | if (rc->r < clip->l) |
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| 163 | return 1; |
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| 164 | else if (rc->r > clip->r) |
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| 165 | rc->r = clip->r; |
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| 166 | |||
| 167 | if (rc->b < clip->t) |
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| 168 | return 1; |
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| 169 | else if (rc->b > clip->b) |
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| 170 | rc->b = clip->b; |
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| 171 | |||
| 172 | if ((rc->l == rc->r) || |
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| 173 | (rc->t == rc->b)) |
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| 174 | return 1; |
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| 175 | return 0; |
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| 176 | } |
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| 177 | |||
| 178 | int px_hline(ctx_t*ctx, int x, int y, int width, color_t color) |
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| 179 | { |
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| 180 | char *dst_addr; |
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| 181 | |||
| 182 | int xr = x + width; |
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| 183 | |||
| 184 | if(y < ctx->rc.t) |
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| 185 | return 0; |
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| 186 | else if(y >= ctx->rc.b) |
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| 187 | return 0; |
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| 188 | |||
| 189 | if(x < ctx->rc.l) |
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| 190 | x = ctx->rc.l; |
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| 191 | else if(x >= ctx->rc.r) |
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| 192 | return 0; |
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| 193 | |||
| 194 | if(xr <= ctx->rc.l) |
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| 195 | return 0; |
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| 196 | else if(xr > ctx->rc.r) |
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| 197 | xr = ctx->rc.r; |
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| 198 | |||
| 199 | dst_addr = ctx->buffer; |
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| 200 | dst_addr+= ctx->pitch * y + x * sizeof(color_t); |
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| 201 | |||
| 202 | __asm__ __volatile__ |
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| 203 | (" cld; rep stosl\n\t" |
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| 204 | :: "D" (dst_addr),"c" (xr-x), "a" (color) |
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| 205 | : "flags"); |
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| 206 | }; |
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| 207 | |||
| 208 | void px_vline(ctx_t*ctx, int x, int y, int height, color_t color) |
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| 209 | { |
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| 210 | char *dst_addr; |
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| 211 | |||
| 212 | int yb = y + height; |
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| 213 | |||
| 214 | if(x < ctx->rc.l) |
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| 215 | return; |
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| 216 | else if(x >= ctx->rc.r) |
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| 217 | return; |
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| 218 | |||
| 219 | if(y < ctx->rc.t) |
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| 220 | y = ctx->rc.t; |
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| 221 | else if(y >= ctx->rc.b) |
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| 222 | return; |
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| 223 | |||
| 224 | if(yb <= ctx->rc.t) |
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| 225 | return; |
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| 226 | else if(yb > ctx->rc.b) |
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| 227 | yb = ctx->rc.b; |
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| 228 | |||
| 229 | dst_addr = ctx->buffer; |
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| 230 | dst_addr+= ctx->pitch * y + x * sizeof(color_t); |
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| 231 | |||
| 232 | while(y < yb) |
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| 233 | { |
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| 234 | color_t *t = (color_t*)dst_addr; |
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| 235 | *t = color; |
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| 236 | y++; |
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| 237 | dst_addr+= ctx->pitch; |
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| 238 | }; |
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| 239 | }; |
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| 240 | |||
| 241 | static int do_fill_rect(ctx_t *ctx, rect_t *rc, color_t color) |
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| 242 | { |
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| 243 | if (!clip_rect(&ctx->rc, rc)) |
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| 244 | { |
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| 245 | int w, h; |
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| 246 | char *dst_addr; |
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| 247 | |||
| 248 | w = rc->r - rc->l; |
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| 249 | h = rc->b - rc->t; |
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| 250 | |||
| 251 | dst_addr = ctx->buffer; |
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| 252 | dst_addr += ctx->pitch * rc->t + rc->l * sizeof(color_t); |
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| 253 | if (w * h >= 256) |
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| 254 | ctx->px_rect_simd(dst_addr, ctx->pitch, w, h, color); |
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| 255 | else |
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| 256 | px_rect_alu(dst_addr, ctx->pitch, w, h, color); |
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| 257 | return 1; |
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| 258 | }; |
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| 259 | return 0; |
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| 260 | }; |
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| 261 | |||
| 262 | void px_fill_rect(ctx_t *ctx, const rect_t *src, color_t color) |
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| 263 | { |
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| 264 | rect_t rc = *src; |
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| 265 | int update; |
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| 266 | |||
| 267 | update = do_fill_rect(ctx, &rc, color); |
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| 268 | |||
| 269 | if(update) |
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| 270 | { |
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| 271 | if (rc.l < ctx->rcu.l) |
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| 272 | ctx->rcu.l = rc.l; |
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| 273 | if (rc.t < ctx->rcu.t) |
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| 274 | ctx->rcu.t = rc.t; |
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| 275 | if (rc.r > ctx->rcu.r) |
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| 276 | ctx->rcu.r = rc.r; |
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| 277 | if (rc.b > ctx->rcu.b) |
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| 278 | ctx->rcu.b = rc.b; |
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| 279 | ctx->dirty = 1; |
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| 280 | }; |
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| 281 | } |
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| 282 | |||
| 283 | void px_fill_region(ctx_t *ctx, const rgn_t *rgn, color_t color) |
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| 284 | { |
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| 285 | int update = 0; |
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| 286 | |||
| 287 | for (int i = 0; i < rgn->num_rects; i++) |
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| 288 | { |
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| 289 | rect_t rc = rgn->rects[i]; |
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| 290 | update |= do_fill_rect(ctx, &rc, color); |
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| 291 | } |
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| 292 | |||
| 293 | if (update) |
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| 294 | { |
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| 295 | if (rgn->extents.l < ctx->rcu.l) |
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| 296 | ctx->rcu.l = rgn->extents.l; |
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| 297 | if (rgn->extents.t < ctx->rcu.t) |
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| 298 | ctx->rcu.t = rgn->extents.t; |
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| 299 | if (rgn->extents.r > ctx->rcu.r) |
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| 300 | ctx->rcu.r = rgn->extents.r; |
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| 301 | if (rgn->extents.b > ctx->rcu.b) |
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| 302 | ctx->rcu.b = rgn->extents.b; |
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| 303 | ctx->dirty = 1; |
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| 304 | }; |
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| 305 | } |
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| 306 | |||
| 307 | void px_draw_glyph(ctx_t *ctx, const void *buffer, int pitch, const rect_t *rc, color_t color) |
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| 308 | { |
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| 309 | rect_t rc_dst = *rc; |
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| 310 | int srcx, srcy; |
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| 311 | |||
| 312 | if (!clip_rect(&ctx->rc, &rc_dst)) |
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| 313 | { |
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| 314 | int width; |
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| 315 | int height; |
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| 316 | unsigned char *dst = ctx->buffer; |
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| 317 | const unsigned char *src = buffer; |
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| 318 | |||
| 319 | width = rc_dst.r - rc_dst.l; |
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| 320 | height = rc_dst.b - rc_dst.t; |
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| 321 | |||
| 322 | srcx = rc_dst.l - rc->l; |
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| 323 | srcy = rc_dst.t - rc->t; |
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| 324 | dst += ctx->pitch * rc_dst.t + rc_dst.l * sizeof(color_t); |
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| 325 | src += pitch * srcy + srcx; |
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| 326 | ctx->px_glyph(dst, ctx->pitch, src, pitch, width, height, color); |
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| 327 | |||
| 328 | if (rc_dst.l < ctx->rcu.l) |
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| 329 | ctx->rcu.l = rc_dst.l; |
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| 330 | if (rc_dst.t < ctx->rcu.t) |
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| 331 | ctx->rcu.t = rc_dst.t; |
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| 332 | if (rc_dst.r > ctx->rcu.r) |
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| 333 | ctx->rcu.r = rc_dst.r; |
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| 334 | if (rc_dst.b > ctx->rcu.b) |
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| 335 | ctx->rcu.b = rc_dst.b; |
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| 336 | |||
| 337 | ctx->dirty = 1; |
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| 338 | }; |
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| 339 | }; |