diff options
Diffstat (limited to 'sponge.h')
| -rw-r--r-- | sponge.h | 35 |
1 files changed, 35 insertions, 0 deletions
@@ -151,6 +151,11 @@ void sponge_draw_mesh_col( sponge_Texture c, float *depths, sponge_Mat4 model, sponge_Mat4 view, sponge_Mat4 proj, sponge_Vec3 *positions, sponge_Color32 *colors, int32_t *triangles, size_t triangles_count); +void sponge_draw_mesh_uv( + sponge_Texture c, float *depths, + sponge_Mat4 model, sponge_Mat4 view, sponge_Mat4 proj, + sponge_Vec3 *positions, sponge_Vec2 *uvs, int32_t *triangles, size_t triangles_count, + sponge_Texture tex); #define SPONGE_CLAMP(val, min, max) ((val) < (min) ? (min) : ((val) > (max) ? (max) : (val))) @@ -592,4 +597,34 @@ void sponge_draw_mesh_col( } } +void sponge_draw_mesh_uv( + sponge_Texture c, float *depths, + sponge_Mat4 model, sponge_Mat4 view, sponge_Mat4 proj, + sponge_Vec3 *positions, sponge_Vec2 *uvs, int32_t *triangles, size_t triangles_count, + sponge_Texture tex +) { + sponge_Mat4 mvp = sponge_mat4_mul_mat4(sponge_mat4_mul_mat4(model, view), proj); + for (size_t i = 0; i < triangles_count; i += 3) { + sponge_DrawMeshTriangleContext ctx = sponge_draw_mesh_triangle_init(c, mvp, positions, triangles, i); + sponge_Color32 *row = c.pixels + (ctx.min_pixel.y * c.stride_pixels); + float *depth_row = depths + (ctx.min_pixel.y * c.stride_pixels); + + for (int32_t y = ctx.min_pixel.y; y <= ctx.max_pixel.y; y++, row += c.stride_pixels, depth_row += c.stride_pixels) { + for (int32_t x = ctx.min_pixel.x; x <= ctx.max_pixel.x; x++) { + float w0, w1, w2; + if (sponge_draw_mesh_triangle_iter(ctx, sponge_vec2i_make(x, y), &depth_row[x], &w0, &w1, &w2)) { + sponge_Vec2 uv0 = uvs[ctx.t0]; + sponge_Vec2 uv1 = uvs[ctx.t1]; + sponge_Vec2 uv2 = uvs[ctx.t2]; + sponge_Vec2 result = sponge_vec2_make(0.0f, 0.0f); + result = sponge_vec2_add(result, sponge_vec2_mul(uv0, w0)); + result = sponge_vec2_add(result, sponge_vec2_mul(uv1, w1)); + result = sponge_vec2_add(result, sponge_vec2_mul(uv2, w2)); + row[x] = sponge_sample_texture(result, tex); + } + } + } + } +} + #endif // SPONGE_IMPLEMENTATION |