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feat: pipe frambuffer to canvas

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This commit is contained in:
beriff
2026-03-04 19:21:37 +07:00
parent 28d4d4b6ce
commit faa3f941d0
5 changed files with 50 additions and 32 deletions
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18
src/core/raster.c
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@@ -34,7 +34,7 @@ void vektor_edgebuffer_flatten_polygon(EdgeBuffer *buffer, VektorPolygon *pg) {
}
inline VektorFramebuffer vektor_framebuffer_new(unsigned int W, unsigned int H) {
VektorFramebuffer fb = {.width = W, .height = H, .pixels = calloc(W * H * 3, 1)};
VektorFramebuffer fb = {.width = W, .height = H, .pixels = calloc(W * H * 4, 1)};
return fb;
}
@@ -43,10 +43,11 @@ inline void vektor_framebuffer_putpixel(VektorFramebuffer *fb, int x, int y, uns
if ((unsigned)x >= fb->width || (unsigned)y >= fb->height)
return;
int i = (y * fb->width + x) * 3;
int i = (y * fb->width + x) * 4;
fb->pixels[i + 0] = r;
fb->pixels[i + 1] = g;
fb->pixels[i + 2] = b;
fb->pixels[i + 3] = 255;
}
void vektor_framebuffer_drawline(VektorFramebuffer *fb, V2 a, V2 b, unsigned char r, unsigned char g,
@@ -77,4 +78,17 @@ void vektor_framebuffer_drawline(VektorFramebuffer *fb, V2 a, V2 b, unsigned cha
y0 += sy;
}
}
}
void vektor_framebuffer_drawto(VektorFramebuffer* fb, VektorCanvas* target) {
for(int x = 0; x < fb->width; x++) {
for(int y = 0; y < fb->height; y++) {
int i = (y * fb->width + x) * 4;
target->canvasPixels[i+0] = (guchar)fb->pixels[i+0];
target->canvasPixels[i+1] = (guchar)fb->pixels[i+1];
target->canvasPixels[i+2] = (guchar)fb->pixels[i+2];
target->canvasPixels[i+3] = (guchar)fb->pixels[i+3];
}
}
}