From f33cd3a03ceaceda089e8ef658650e52a70938a4 Mon Sep 17 00:00:00 2001 From: kkard2 Date: Mon, 1 Sep 2025 20:17:51 +0200 Subject: init --- softrender.h | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 softrender.h (limited to 'softrender.h') diff --git a/softrender.h b/softrender.h new file mode 100644 index 0000000..e417ab2 --- /dev/null +++ b/softrender.h @@ -0,0 +1,35 @@ +#include + +typedef struct { + // TODO(kard): define byte order + uint32_t *pixels; + uint32_t width; + uint32_t height; + uint32_t stride; +} soft_Canvas; + +void soft_clear(soft_Canvas c, uint32_t color); +void soft_draw_rect(soft_Canvas c, uint32_t x0, uint32_t y0, uint32_t x1, uint32_t y1, uint32_t color); + +// TODO(kard): prefix stripping + +#ifdef SOFTRENDER_IMPLEMENTATION + +void soft_clear(soft_Canvas c, uint32_t color) { + soft_draw_rect(c, 0, 0, c.width - 1, c.height - 1, color); +} + +// TODO(kard): probably bounds checking +// TODO(kard): alpha blending maybe +void soft_draw_rect(soft_Canvas c, uint32_t x0, uint32_t y0, uint32_t x1, uint32_t y1, uint32_t color) { + uint32_t *row = c.pixels + (y0 * c.stride); + + for (uint32_t y = y0; y <= y1; y++, row += c.stride) { + for (uint32_t x = x0; x <= x1; x++) { + row[x] = color; + } + } +} + +#endif // SOFTRENDER_IMPLEMENTATION + -- cgit v1.3.1