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PicoVector: Tweak polygon tile rendering loop.

pull/783/head
Phil Howard 2023-08-21 11:44:46 +01:00
rodzic 591058fb12
commit c443f8d206
1 zmienionych plików z 7 dodań i 7 usunięć
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14
libraries/pico_vector/pico_vector.hpp
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@ -22,26 +22,26 @@ namespace pimoroni {
if(this->graphics->supports_alpha_blend() && pretty_poly::settings::antialias != pretty_poly::NONE) {
for(auto y = 0; y < tile.bounds.h; y++) {
for(auto x = 0; x < (int)tile.stride; x++) {
for(auto x = 0; x < tile.bounds.w; x++) {
uint8_t alpha = *tile_data++;
if(x > tile.bounds.w) continue;
if (alpha >= 4) {
this->graphics->pixel({x + tile.bounds.x, y + tile.bounds.y});
this->graphics->set_pixel({x + tile.bounds.x, y + tile.bounds.y});
} else if (alpha > 0) {
alpha = alpha_map[alpha];
this->graphics->set_pixel_alpha({x + tile.bounds.x, y + tile.bounds.y}, alpha);
}
}
tile_data += tile.stride - tile.bounds.w;
}
} else {
for(auto y = 0; y < tile.bounds.h; y++) {
for(auto x = 0; x < (int)tile.stride; x++) {
uint8_t alpha = *tile_data++;
if(x > tile.bounds.w) continue;
for(auto x = 0; x < tile.bounds.w; x++) {
uint8_t alpha = *tile_data++;
if (alpha) {
this->graphics->pixel({x + tile.bounds.x, y + tile.bounds.y});
this->graphics->set_pixel({x + tile.bounds.x, y + tile.bounds.y});
}
}
tile_data += tile.stride - tile.bounds.w;
}
}
}, graphics->supports_alpha_blend() ? pretty_poly::X4 : pretty_poly::NONE, {0, 0, graphics->bounds.w, graphics->bounds.h});