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DS GX: Fix endpoint clamping

This commit is contained in:
Vicki Pfau 2017-03-14 08:32:38 -07:00
parent 7756468767
commit 348fb5ab0e
1 changed files with 14 additions and 14 deletions
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28
src/ds/gx/software.c
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@ -283,7 +283,7 @@ static bool _edgeToSpan(struct DSGXSoftwareSpan* span, const struct DSGXSoftware
return true;
}
static void _lerpEndpoint(const struct DSGXSoftwareSpan* span, struct DSGXSoftwareEndpoint* ep, unsigned x) {
static void _lerpEndpoint(const struct DSGXSoftwareSpan* span, struct DSGXSoftwareEndpoint* ep, int x) {
int64_t width = span->ep[1].x - span->ep[0].x;
int64_t xw = x - span->ep[0].x;
if (!width) {
@ -379,14 +379,14 @@ static void DSGXSoftwareRendererSetRAM(struct DSGXRenderer* renderer, struct DSG
struct DSGXVertex* v0 = &verts[poly->poly->vertIds[0]];
struct DSGXVertex* v1;
int32_t v0x = (v0->vx + v0->vw) * (int64_t) renderer->viewportWidth / (v0->vw * 2) + renderer->viewportX;
int32_t v0y = (-v0->vy + v0->vw) * (int64_t) renderer->viewportHeight / (v0->vw * 2) + renderer->viewportY;
int32_t v0x = (v0->vx + v0->vw) * (int64_t) (renderer->viewportWidth << 12) / (v0->vw * 2) + (renderer->viewportX << 12);
int32_t v0y = (-v0->vy + v0->vw) * (int64_t) (renderer->viewportHeight << 12) / (v0->vw * 2) + (renderer->viewportY << 12);
int v;
for (v = 1; v < poly->poly->verts; ++v) {
v1 = &verts[poly->poly->vertIds[v]];
int32_t v1x = (v1->vx + v1->vw) * (int64_t) renderer->viewportWidth / (v1->vw * 2) + renderer->viewportX;
int32_t v1y = (-v1->vy + v1->vw) * (int64_t) renderer->viewportHeight / (v1->vw * 2) + renderer->viewportY;
int32_t v1x = (v1->vx + v1->vw) * (int64_t) (renderer->viewportWidth << 12) / (v1->vw * 2) + (renderer->viewportX << 12);
int32_t v1y = (-v1->vy + v1->vw) * (int64_t) (renderer->viewportHeight << 12) / (v1->vw * 2) + (renderer->viewportY << 12);
if (v0y <= v1y) {
edge->y0 = v0y;
@ -430,8 +430,8 @@ static void DSGXSoftwareRendererSetRAM(struct DSGXRenderer* renderer, struct DSG
}
v1 = &verts[poly->poly->vertIds[0]];
int32_t v1x = (v1->vx + v1->vw) * (int64_t) renderer->viewportWidth / (v1->vw * 2) + renderer->viewportX;
int32_t v1y = (-v1->vy + v1->vw) * (int64_t) renderer->viewportHeight / (v1->vw * 2) + renderer->viewportY;
int32_t v1x = (v1->vx + v1->vw) * (int64_t) (renderer->viewportWidth << 12) / (v1->vw * 2) + (renderer->viewportX << 12);
int32_t v1y = (-v1->vy + v1->vw) * (int64_t) (renderer->viewportHeight << 12) / (v1->vw * 2) + (renderer->viewportY << 12);
if (v0y <= v1y) {
edge->y0 = v0y;
@ -479,23 +479,23 @@ static void DSGXSoftwareRendererDrawScanline(struct DSGXRenderer* renderer, int
size_t i;
for (i = 0; i < DSGXSoftwareEdgeListSize(&softwareRenderer->activeEdges); ++i) {
struct DSGXSoftwareEdge* edge = DSGXSoftwareEdgeListGetPointer(&softwareRenderer->activeEdges, i);
if (edge->y1 < y) {
if (edge->y1 < (y << 12)) {
continue;
} else if (edge->y0 > y) {
} else if (edge->y0 > (y << 12)) {
continue;
}
unsigned poly = edge->polyId;
struct DSGXSoftwareSpan* span = softwareRenderer->bucket[poly];
if (span && !span->ep[1].w) {
if (_edgeToSpan(span, edge, 1, y)) {
if (_edgeToSpan(span, edge, 1, y << 12)) {
softwareRenderer->bucket[poly] = NULL;
}
} else if (!span) {
span = DSGXSoftwareSpanListAppend(&softwareRenderer->activeSpans);
memset(&span->ep[1], 0, sizeof(span->ep[1]));
span->poly = DSGXSoftwarePolygonListGetPointer(&softwareRenderer->activePolys, poly);
if (!_edgeToSpan(span, edge, 0, y)) {
if (!_edgeToSpan(span, edge, 0, y << 12)) {
// Horizontal line
DSGXSoftwareSpanListShift(&softwareRenderer->activeSpans, DSGXSoftwareSpanListSize(&softwareRenderer->activeSpans) - 1, 1);
} else {
@ -516,13 +516,13 @@ static void DSGXSoftwareRendererDrawScanline(struct DSGXRenderer* renderer, int
for (i = 0; i < DSGXSoftwareSpanListSize(&softwareRenderer->activeSpans); ++i) {
struct DSGXSoftwareSpan* span = DSGXSoftwareSpanListGetPointer(&softwareRenderer->activeSpans, i);
int32_t x = span->ep[0].x;
int32_t x = span->ep[0].x >> 12;
if (x < 0) {
x = 0;
}
for (; x < span->ep[1].x && x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
for (; x < (span->ep[1].x >> 12) && x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
struct DSGXSoftwareEndpoint ep;
_lerpEndpoint(span, &ep, x);
_lerpEndpoint(span, &ep, x << 12);
color_t color = _lookupColor(softwareRenderer, &ep, span->poly);
unsigned a = color >> 27;
unsigned current = scanline[x];