45 lines
1.0 KiB
C
45 lines
1.0 KiB
C
#include <gint/display.h>
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#include "render-fx.h"
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#include "bopti-asm.h"
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#pragma GCC optimize("O3")
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/* dsubimage(): Render a section of an image */
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void dsubimage(int x, int y, bopti_image_t const *img, int left, int top,
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int width, int height, int flags)
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{
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struct rbox r = {
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0, x, y, width, left, 0, top, height
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};
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DMODE_OVERRIDE(dsubimage, img, &r, flags);
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if(img->gray) return;
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/* Intersect the bounding box with both the source image and the VRAM,
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except if DIMAGE_NOCLIP is provided */
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if(!(flags & DIMAGE_NOCLIP))
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{
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/* Early finish for empty intersections */
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if(bopti_clip(img, &r)) return;
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}
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left = r.left;
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width = r.width;
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int visual_x = r.visual_x;
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r.left = left >> 5;
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r.columns = ((left + width - 1) >> 5) - r.left + 1;
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if(r.columns == 1 && (visual_x & 31) + width <= 32)
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{
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r.x = (left & 31) - (visual_x & 31);
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bopti_render_scsp(img, &r, gint_vram, NULL);
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}
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else
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{
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/* x-coordinate of the first pixel of the first column */
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r.x = visual_x - (left & 31);
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bopti_render(img, &r, gint_vram, NULL);
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}
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}
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