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DS GX: Fixed viewport calculations (fixes #709)

This commit is contained in:
Gericom 2017-07-16 16:10:28 -07:00 committed by Vicki Pfau
parent de55e44152
commit 9dfcef3f45
2 changed files with 4 additions and 3 deletions
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1
CHANGES
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@ -4,6 +4,7 @@ Features:
Bugfixes:
- DS GX: Fix vertex texture transformation (fixes mgba.io/i/702)
- DS GX: Automatically normalize winding culling calculations (fixes mgba.io/i/699)
- DS GX: Fixed viewport calculations (fixes mgba.io/i/709)
Misc:
- DS GX: Clean up and unify texture mapping
- DS Core: Add symbol loading

6
src/ds/gx/software.c
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@ -498,7 +498,7 @@ static void _preparePoly(struct DSGXRenderer* renderer, struct DSGXVertex* verts
}
int32_t v0x = (v0->viewCoord[0] + v0w) * (int64_t) (v0->viewportWidth << 12) / (v0w * 2) + (v0->viewportX << 12);
int32_t v0y = (-v0->viewCoord[1] + v0w) * (int64_t) (v0->viewportHeight << 12) / (v0w * 2) + (v0->viewportY << 12);
int32_t v0y = (DS_VIDEO_VERTICAL_PIXELS << 12) - ((v0->viewCoord[1] + v0w) * (int64_t) (v0->viewportHeight << 12) / (v0w * 2) + (v0->viewportY << 12));
if (poly->minY > v0y >> 12) {
poly->minY = v0y >> 12;
}
@ -515,7 +515,7 @@ static void _preparePoly(struct DSGXRenderer* renderer, struct DSGXVertex* verts
v1w = 1;
}
int32_t v1x = (v1->viewCoord[0] + v1w) * (int64_t) (v1->viewportWidth << 12) / (v1w * 2) + (v1->viewportX << 12);
int32_t v1y = (-v1->viewCoord[1] + v1w) * (int64_t) (v1->viewportHeight << 12) / (v1w * 2) + (v1->viewportY << 12);
int32_t v1y = (DS_VIDEO_VERTICAL_PIXELS << 12) - ((v1->viewCoord[1] + v1w) * (int64_t) (v1->viewportHeight << 12) / (v1w * 2) + (v1->viewportY << 12));
if (poly->minY > v1y >> 12) {
poly->minY = v1y >> 12;
}
@ -574,7 +574,7 @@ static void _preparePoly(struct DSGXRenderer* renderer, struct DSGXVertex* verts
v1w = 1;
}
int32_t v1x = (v1->viewCoord[0] + v1w) * (int64_t) (v1->viewportWidth << 12) / (v1w * 2) + (v1->viewportX << 12);
int32_t v1y = (-v1->viewCoord[1] + v1w) * (int64_t) (v1->viewportHeight << 12) / (v1w * 2) + (v1->viewportY << 12);
int32_t v1y = (DS_VIDEO_VERTICAL_PIXELS << 12) - ((v1->viewCoord[1] + v1w) * (int64_t) (v1->viewportHeight << 12) / (v1w * 2) + (v1->viewportY << 12));
if (poly->minY > v1y >> 12) {
poly->minY = v1y >> 12;