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Write circle pixels linearly

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This commit is contained in:
doop
2026-04-29 04:16:24 +00:00
parent e15f5bcee9
commit afe54f22ab
1 changed files with 18 additions and 17 deletions
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src/d/d_map_path.cpp
+18 -17
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@@ -44,33 +44,34 @@ void dMpath_n::dTexObjAggregate_c::create() {
const auto center = kMapCircleSize / 2.0f;
const auto radiusSq = center * center;
const auto blocksAcross = kMapCircleSize >> 3;
const auto totalPixels = sizeof(hqCircleData);
for (u16 y = 0; y < kMapCircleSize; y++) {
for (u16 x = 0; x < kMapCircleSize; x++) {
// swizzle raster order to I8 blocks
auto blockX = x >> 3;
auto blockY = y >> 2;
auto blockIdx = (blockY * blocksAcross) + blockX;
for (size_t i = 0; i < totalPixels; i++) {
// 8x4 block swizzling for I8
const auto blockIdx = i >> 5;
const auto localIdx = i & 31;
auto localX = x & 7;
auto localY = y & 3;
auto localIdx = (localY << 3) + localX;
const auto blockY = blockIdx / blocksAcross;
const auto blockX = blockIdx % blocksAcross;
auto finalOffset = (blockIdx << 5) + localIdx;
const auto localY = localIdx >> 3;
const auto localX = localIdx & 7;
auto dx = (x + 0.5f) - center;
auto dy = (y + 0.5f) - center;
const auto x = (blockX << 3) + localX;
const auto y = (blockY << 2) + localY;
// the original texture is in I4 format and uses 1 to indicate if inside the circle
// so we scale to I8 range: 255 / 15 = 17
hqCircleData[finalOffset] = (dx * dx + dy * dy < radiusSq) ? 17 : 0;
}
const auto dx = (x + 0.5f) - center;
const auto dy = (y + 0.5f) - center;
// the original texture is in I4 format and uses 1 to indicate if inside the circle
// so we scale to I8 range: 255 / 15 = 17
hqCircleData[i] = (dx * dx + dy * dy < radiusSq) ? 17 : 0;
}
hqCircleDrawn = true;
}
GXInitTexObj(hqCircle, hqCircleData, kMapCircleSize, kMapCircleSize, GX_TF_I8, GX_CLAMP,
GX_CLAMP, GX_FALSE);
GX_CLAMP, GX_FALSE);
GXInitTexObjLOD(hqCircle, GX_NEAR, GX_NEAR, 0.0f, 0.0f, 0.0f, GX_FALSE, GX_FALSE, GX_ANISO_1);
mp_texObj[6] = hqCircle;
#endif