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softgpu: Avoid calling unordered coords tl/br.

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These are just corners, we don't know if they're top or not at this point.
This commit is contained in:
Unknown W. Brackets 2022-09-10 14:58:27 -07:00
parent 13ca08b235
commit f5f5c9ea87
1 changed files with 6 additions and 6 deletions
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12
GPU/Software/RasterizerRectangle.cpp
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@ -414,14 +414,14 @@ bool DetectRectangleFromFan(const RasterizerState &state, const VertexData *data
// Check for the common case: a single TL-TR-BR-BL.
if (c == 4) {
const auto &tl = data[0].screenpos, &tr = data[1].screenpos;
const auto &bl = data[3].screenpos, &br = data[2].screenpos;
if (tl.x == bl.x && tr.x == br.x && tl.y == tr.y && bl.y == br.y) {
const auto &pos0 = data[0].screenpos, &pos1 = data[1].screenpos;
const auto &pos2 = data[2].screenpos, &pos3 = data[3].screenpos;
if (pos0.x == pos3.x && pos1.x == pos2.x && pos0.y == pos1.y && pos3.y == pos2.y) {
// Looking like yes. Set TL/BR based on y order first...
*tlIndex = tl.y > bl.y ? 2 : 0;
*brIndex = tl.y > bl.y ? 0 : 2;
*tlIndex = pos0.y > pos3.y ? 2 : 0;
*brIndex = pos0.y > pos3.y ? 0 : 2;
// And if it's horizontally flipped, trade to the actual TL/BR.
if (tl.x > tr.x) {
if (pos0.x > pos1.x) {
*tlIndex ^= 1;
*brIndex ^= 1;
}