diff options
Diffstat (limited to 'src/canvas.h')
| -rw-r--r-- | src/canvas.h | 457 |
1 files changed, 290 insertions, 167 deletions
diff --git a/src/canvas.h b/src/canvas.h index e06b1e8..78ff6ca 100644 --- a/src/canvas.h +++ b/src/canvas.h @@ -1020,46 +1020,139 @@ public: // Draws a region of the canvas into a GdkImage for display on the screen, with optional scaling // and darkening. - void blit_2x(GdkImage* img, int x, int y, int w, int h, int scroll_x, int scroll_y, bool overlay) + void blit_1x(GdkImage* img, int src_x, int src_y, int dest_x, int dest_y, int dest_w, int dest_h, bool overlay) { unsigned short* pixels = (unsigned short*)img->mem; int pitch = img->bpl/sizeof(unsigned short); - // Round to multiple of 2. - x &= ~1; - y &= ~1; - w = (w+1) & ~1; - h = (h+1) & ~1; - - // Clip rectangle. - if (x < 0) + // Clip destination rectangle. Source clipping is handled per pixel. + if (dest_x < 0) { - w += x; - x = 0; + dest_w += dest_x; + dest_x = 0; } - if (y < 0) + if (dest_y < 0) { - h += y; - y = 0; + dest_h += dest_y; + dest_y = 0; } - if (x+w > (width-1)*2) - w = (width-1)*2-x; - if (y+h > (height-1)*2) - h = (height-1)*2-y; + if (dest_x+dest_w > img->width) + dest_w = img->width - dest_x; + if (dest_y+dest_h > img->height) + dest_h = img->height - dest_y; - // Translate origin to output location. - int src_x = (x - scroll_x)/2; - int src_y = (y - scroll_y)/2; + int csy = src_y; + for (int cdy = dest_y; cdy < dest_y+dest_h; cdy++) + { + unsigned short* __restrict row = &pixels[cdy*pitch+dest_x]; + + // If out of bounds vertically, fill row with the background color. + if (csy < 0 || csy >= height) + { + for (int cdx = 0; cdx < dest_w; cdx++) + { + unsigned int rgb = 0; + *row++ = rgb; + } + } + else + { + unsigned int* __restrict src = &image[csy*width+src_x]; + + int cdx = 0; + int csx = src_x; + + // Fill any portion that is to the left of the src image with + // background color. + while (csx < 0 && cdx < dest_w) + { + unsigned int rgb = 0; + *row++ = rgb; + src++; + csx++; + cdx++; + } + + // Copy the pixels. + if (overlay) + { + while (csx < width && cdx < dest_w) + { + unsigned int p = *src; + p &= ~0x03030303; + p >>= 2; + unsigned int r = (((p>>16)&0xff)>>3)<<11; + unsigned int g = (((p>> 8)&0xff)>>2)<<5; + unsigned int b = (((p>> 0)&0xff)>>3); + unsigned int rgb = r|g|b; + *row++ = rgb; + src++; + csx++; + cdx++; + } + } + else + { + while (csx < width && cdx < dest_w) + { + unsigned int p = *src; + unsigned int r = (((p>>16)&0xff)>>3)<<11; + unsigned int g = (((p>> 8)&0xff)>>2)<<5; + unsigned int b = (((p>> 0)&0xff)>>3); + unsigned int rgb = r|g|b; + *row++ = rgb; + src++; + csx++; + cdx++; + } + } + + // Fill any portion to the right of src with background pixels. + while (cdx < dest_w) + { + unsigned int rgb = 0; + *row++ = rgb; + src++; + csx++; + cdx++; + } + } + + csy++; + } + } + + void blit_2x(GdkImage* img, int src_x, int src_y, int dest_x, int dest_y, int dest_w, int dest_h, bool overlay) + { + unsigned short* pixels = (unsigned short*)img->mem; + int pitch = img->bpl/sizeof(unsigned short); + + // Clip destination rectangle. Source clipping is handled per pixel. + if (dest_x < 0) + { + dest_w += dest_x; + dest_x = 0; + } + if (dest_y < 0) + { + dest_h += dest_y; + dest_y = 0; + } + if (dest_x+dest_w > img->width-2) + dest_w = (img->width-2) - dest_x; + if (dest_y+dest_h > img->height-2) + dest_h = (img->height-2) - dest_y; int csy = src_y; - for (int cy = y; cy < y+h; cy += 2) + for (int cdy = dest_y; cdy < dest_y+dest_h; cdy += 2) { - unsigned short* __restrict row0 = &pixels[cy*pitch+x]; + unsigned short* __restrict row0 = &pixels[cdy*pitch+dest_x]; unsigned short* __restrict row1 = row0 + pitch; + // If out of bounds vertically, fill row with the background color. if (csy < 0 || csy >= height) { - for (int cx = 0; cx < w; cx += 2) + for (int cdx = 0; cdx < dest_w; cdx += 2) { unsigned int rgb = 0; row0[0] = rgb; @@ -1074,10 +1167,12 @@ public: { unsigned int* __restrict src = &image[csy*width+src_x]; - int cx = 0; + int cdx = 0; int csx = src_x; - while (csx < 0 && cx < w) + // Fill any portion that is to the left of the src image with + // background color. + while (csx < 0 && cdx < dest_w) { unsigned int rgb = 0; row0[0] = rgb; @@ -1088,12 +1183,13 @@ public: row1 += 2; src++; csx++; - cx += 2; + cdx += 2; } + // Copy the pixels. if (overlay) { - while (csx < width && cx < w) + while (csx < width && cdx < dest_w) { unsigned int p = *src; p &= ~0x03030303; @@ -1110,12 +1206,12 @@ public: row1 += 2; src++; csx++; - cx += 2; + cdx += 2; } } else { - while (csx < width && cx < w) + while (csx < width && cdx < dest_w) { unsigned int p = *src; unsigned int r = (((p>>16)&0xff)>>3)<<11; @@ -1130,11 +1226,12 @@ public: row1 += 2; src++; csx++; - cx += 2; + cdx += 2; } } - while (cx < w) + // Fill any portion to the right of src with background pixels. + while (cdx < dest_w) { unsigned int rgb = 0; row0[0] = rgb; @@ -1145,7 +1242,7 @@ public: row1 += 2; src++; csx++; - cx += 2; + cdx += 2; } } @@ -1153,110 +1250,188 @@ public: } } - void blit_4x(GdkImage* img, int x, int y, int w, int h, int scroll_x, int scroll_y, bool overlay) + void blit_4x(GdkImage* img, int src_x, int src_y, int dest_x, int dest_y, int dest_w, int dest_h, bool overlay) { unsigned short* pixels = (unsigned short*)img->mem; int pitch = img->bpl/sizeof(unsigned short); - + // Clip rectangle. - if (x < 0) + // Clip destination rectangle. Source clipping is handled per pixel. + if (dest_x < 0) { - w += x; - x = 0; + dest_w += dest_x; + dest_x = 0; } - if (y < 0) + if (dest_y < 0) { - h += y; - y = 0; + dest_h += dest_y; + dest_y = 0; } + if (dest_x + dest_w > img->width-4) + dest_w = (img->width-4) - dest_x; + if (dest_y + dest_h > img->height-4) + dest_h = (img->height-4) - dest_y; - x &= ~3; - y &= ~3; - w = (w) & ~3; - h = (h) & ~3; - - if (x+w > (width-7)*4) - w = (width-7)*4-x; - if (y+h > (height-7)*4) - h = (height-7)*4-y; + int csy = src_y; + for (int cdy = dest_y; cdy < dest_y+dest_h; cdy += 4) + { + unsigned short* __restrict row0 = &pixels[cdy*pitch+dest_x]; + unsigned short* __restrict row1 = row0 + pitch; + unsigned short* __restrict row2 = row1 + pitch; + unsigned short* __restrict row3 = row2 + pitch; + +#define FILL_PIXEL(rgb) \ + row0[0] = rgb; row0[1] = rgb; row0[2] = rgb; row0[3] = rgb; \ + row1[0] = rgb; row1[1] = rgb; row1[2] = rgb; row1[3] = rgb; \ + row2[0] = rgb; row2[1] = rgb; row2[2] = rgb; row2[3] = rgb; \ + row3[0] = rgb; row3[1] = rgb; row3[2] = rgb; row3[3] = rgb; \ + row0 += 4; row1 += 4; row2 += 4; row3 += 4; + + if (csy < 0 || csy >= height) + { + for (int cdx = 0; cdx < dest_w; cdx += 4) + { + FILL_PIXEL(0) + } + } + else + { + unsigned int* __restrict src = &image[csy*width+src_x]; + + int cdx = 0; + int csx = src_x; + + while (csx < 0 && cdx < dest_w) + { + FILL_PIXEL(0) + + src++; + csx++; + cdx += 4; + } + + if (overlay) + { + while (csx < width && cdx < dest_w) + { + unsigned int p = *src; + p &= ~0x03030303; + p >>= 2; + unsigned int r = (((p>>16)&0xff)>>3)<<11; + unsigned int g = (((p>> 8)&0xff)>>2)<<5; + unsigned int b = (((p>> 0)&0xff)>>3); + unsigned int rgb = r|g|b; + FILL_PIXEL(rgb) + + src++; + csx++; + cdx += 4; + } + } + else + { + while (csx < width && cdx < dest_w) + { + unsigned int p = *src; + unsigned int r = (((p>>16)&0xff)>>3)<<11; + unsigned int g = (((p>> 8)&0xff)>>2)<<5; + unsigned int b = (((p>> 0)&0xff)>>3); + unsigned int rgb = r|g|b; + FILL_PIXEL(rgb) + + src++; + csx++; + cdx += 4; + } + } + + while (cdx < dest_w) + { + FILL_PIXEL(0) + + src++; + csx++; + cdx += 4; + } + } - // Translate origin to output location. - int src_x = (x - scroll_x)/4; - int src_y = (y - scroll_y)/4; +#undef FILL_PIXEL + + csy++; + } + } + + void blit_8x(GdkImage* img, int src_x, int src_y, int dest_x, int dest_y, int dest_w, int dest_h, bool overlay) + { + unsigned short* pixels = (unsigned short*)img->mem; + int pitch = img->bpl/sizeof(unsigned short); + + // Clip rectangle. + // Clip destination rectangle. Source clipping is handled per pixel. + if (dest_x < 0) + { + dest_w += dest_x; + dest_x = 0; + } + if (dest_y < 0) + { + dest_h += dest_y; + dest_y = 0; + } + if (dest_x + dest_w > img->width-8) + dest_w = (img->width-8) - dest_x; + if (dest_y + dest_h > img->height-8) + dest_h = (img->height-8) - dest_y; int csy = src_y; - for (int cy = y; cy < y+h; cy += 4) + for (int cdy = dest_y; cdy < dest_y+dest_h; cdy += 8) { - unsigned short* __restrict row0 = &pixels[cy*pitch+x]; + unsigned short* __restrict row0 = &pixels[cdy*pitch+dest_x]; unsigned short* __restrict row1 = row0 + pitch; unsigned short* __restrict row2 = row1 + pitch; unsigned short* __restrict row3 = row2 + pitch; + unsigned short* __restrict row4 = row3 + pitch; + unsigned short* __restrict row5 = row4 + pitch; + unsigned short* __restrict row6 = row5 + pitch; + unsigned short* __restrict row7 = row6 + pitch; + +#define FILL_PIXEL(rgb) \ + row0[0] = rgb; row0[1] = rgb; row0[2] = rgb; row0[3] = rgb; row0[4] = rgb; row0[5] = rgb; row0[6] = rgb; row0[7] = rgb; \ + row1[0] = rgb; row1[1] = rgb; row1[2] = rgb; row1[3] = rgb; row1[4] = rgb; row1[5] = rgb; row1[6] = rgb; row1[7] = rgb; \ + row2[0] = rgb; row2[1] = rgb; row2[2] = rgb; row2[3] = rgb; row2[4] = rgb; row2[5] = rgb; row2[6] = rgb; row2[7] = rgb; \ + row3[0] = rgb; row3[1] = rgb; row3[2] = rgb; row3[3] = rgb; row3[4] = rgb; row3[5] = rgb; row3[6] = rgb; row3[7] = rgb; \ + row4[0] = rgb; row4[1] = rgb; row4[2] = rgb; row4[3] = rgb; row4[4] = rgb; row4[5] = rgb; row4[6] = rgb; row4[7] = rgb; \ + row5[0] = rgb; row5[1] = rgb; row5[2] = rgb; row5[3] = rgb; row5[4] = rgb; row5[5] = rgb; row5[6] = rgb; row5[7] = rgb; \ + row6[0] = rgb; row6[1] = rgb; row6[2] = rgb; row6[3] = rgb; row6[4] = rgb; row6[5] = rgb; row6[6] = rgb; row6[7] = rgb; \ + row7[0] = rgb; row7[1] = rgb; row7[2] = rgb; row7[3] = rgb; row7[4] = rgb; row7[5] = rgb; row7[6] = rgb; row7[7] = rgb; \ + row0 += 8; row1 += 8; row2 += 8; row3 += 8; row4 += 8; row5 += 8; row6 += 8; row7 += 8; if (csy < 0 || csy >= height) { - for (int cx = 0; cx < w; cx += 4) + for (int cdx = 0; cdx < dest_w; cdx += 8) { - unsigned int rgb = 0; - row0[0] = rgb; - row0[1] = rgb; - row0[2] = rgb; - row0[3] = rgb; - row1[0] = rgb; - row1[1] = rgb; - row1[2] = rgb; - row1[3] = rgb; - row2[0] = rgb; - row2[1] = rgb; - row2[2] = rgb; - row2[3] = rgb; - row3[0] = rgb; - row3[1] = rgb; - row3[2] = rgb; - row3[3] = rgb; - row0 += 4; - row1 += 4; - row2 += 4; - row3 += 4; + FILL_PIXEL(0) } } else { unsigned int* __restrict src = &image[csy*width+src_x]; - int cx = 0; + int cdx = 0; int csx = src_x; - while (csx < 0 && cx < w) + while (csx < 0 && cdx < dest_w) { - unsigned int rgb = 0; - row0[0] = rgb; - row0[1] = rgb; - row0[2] = rgb; - row0[3] = rgb; - row1[0] = rgb; - row1[1] = rgb; - row1[2] = rgb; - row1[3] = rgb; - row2[0] = rgb; - row2[1] = rgb; - row2[2] = rgb; - row2[3] = rgb; - row3[0] = rgb; - row3[1] = rgb; - row3[2] = rgb; - row3[3] = rgb; - row0 += 4; - row1 += 4; - row2 += 4; - row3 += 4; + FILL_PIXEL(0) + src++; csx++; - cx += 4; + cdx += 8; } if (overlay) { - while (csx < width && cx < w) + while (csx < width && cdx < dest_w) { unsigned int p = *src; p &= ~0x03030303; @@ -1265,95 +1440,43 @@ public: unsigned int g = (((p>> 8)&0xff)>>2)<<5; unsigned int b = (((p>> 0)&0xff)>>3); unsigned int rgb = r|g|b; - row0[0] = rgb; - row0[1] = rgb; - row0[2] = rgb; - row0[3] = rgb; - row1[0] = rgb; - row1[1] = rgb; - row1[2] = rgb; - row1[3] = rgb; - row2[0] = rgb; - row2[1] = rgb; - row2[2] = rgb; - row2[3] = rgb; - row3[0] = rgb; - row3[1] = rgb; - row3[2] = rgb; - row3[3] = rgb; - row0 += 4; - row1 += 4; - row2 += 4; - row3 += 4; + FILL_PIXEL(rgb) + src++; csx++; - cx += 4; + cdx += 8; } } else { - while (csx < width && cx < w) + while (csx < width && cdx < dest_w) { unsigned int p = *src; unsigned int r = (((p>>16)&0xff)>>3)<<11; unsigned int g = (((p>> 8)&0xff)>>2)<<5; unsigned int b = (((p>> 0)&0xff)>>3); unsigned int rgb = r|g|b; - row0[0] = rgb; - row0[1] = rgb; - row0[2] = rgb; - row0[3] = rgb; - row1[0] = rgb; - row1[1] = rgb; - row1[2] = rgb; - row1[3] = rgb; - row2[0] = rgb; - row2[1] = rgb; - row2[2] = rgb; - row2[3] = rgb; - row3[0] = rgb; - row3[1] = rgb; - row3[2] = rgb; - row3[3] = rgb; - row0 += 4; - row1 += 4; - row2 += 4; - row3 += 4; + FILL_PIXEL(rgb) + src++; csx++; - cx += 4; + cdx += 8; } } - while (cx < w) + while (cdx < dest_w) { unsigned int rgb = 0; - row0[0] = rgb; - row0[1] = rgb; - row0[2] = rgb; - row0[3] = rgb; - row1[0] = rgb; - row1[1] = rgb; - row1[2] = rgb; - row1[3] = rgb; - row2[0] = rgb; - row2[1] = rgb; - row2[2] = rgb; - row2[3] = rgb; - row3[0] = rgb; - row3[1] = rgb; - row3[2] = rgb; - row3[3] = rgb; - row0 += 4; - row1 += 4; - row2 += 4; - row3 += 4; + FILL_PIXEL(rgb) + src++; csx++; - cx += 4; + cdx += 8; } } +#undef FILL_PIXEL + csy++; } } |