krzosa/software_rasterizer
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nearest neighbour blending and gamma

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Krzosa Karol
2022-02-20 20:02:33 +01:00
parent a5b111d24a
commit 03777764b7
4 changed files with 12 additions and 684 deletions
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17
main.cpp
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@@ -231,7 +231,14 @@ void draw_triangle(Image* dst, float *depth_buffer, Image *src,
#endif // GAMMA_CORRECT_BLENDING
U32 color32 = color_to_u32abgr(result_color);
#else // BILINEAR_BLEND
U32 color32 = *pixel;
Vec4 result_color = srgb_to_almost_linear(vec4abgr(*pixel));
Vec4 dst_color = srgb_to_almost_linear(vec4abgr(*dst_pixel));
result_color.r = result_color.r + (1-result_color.a) * dst_color.r;
result_color.g = result_color.g + (1-result_color.a) * dst_color.g;
result_color.b = result_color.b + (1-result_color.a) * dst_color.b;
result_color.a = result_color.a + dst_color.a - result_color.a*dst_color.a;
result_color = almost_linear_to_srgb(result_color);
U32 color32 = color_to_u32abgr(result_color);
#endif // BILINEAR_BLEND
*dst_pixel = color32;
@@ -306,16 +313,16 @@ int main() {
float rotation = 0;
Vec3 camera_pos = {0,0,-5};
Obj obj = load_obj("assets/f22.obj");
Obj obj = load_obj("assets/cube.obj");
Vec3* vertices = (Vec3 *)obj.vertices;
Vec2* tex_coords = (Vec2*)obj.texture;
FaceA* faces = (FaceA*)obj.indices;
I64 face_count = obj.indices_count;
Image img = load_image("assets/bricksx64.png");
int screen_x = 320;
int screen_y = 60;
Image img = load_image("assets/cat.png");
int screen_x = 160;
int screen_y = 90;
Image screen320 = {(U32 *)malloc(screen_x*screen_y*sizeof(U32)), screen_x, screen_y};
float* depth320 = (float *)malloc(sizeof(float) * screen_x * screen_y);
while (os.game_loop()) {