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DS GX: Do not allocate memory every scanline

This commit is contained in:
Vicki Pfau 2017-02-28 17:21:59 -08:00
parent a3cd5f8ca4
commit 0454a30b2e
2 changed files with 7 additions and 7 deletions
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2
include/mgba/internal/ds/gx/software.h
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@ -71,7 +71,7 @@ struct DSGXSoftwareRenderer {
struct DSGXSoftwarePolygonList activePolys;
struct DSGXSoftwareEdgeList activeEdges;
struct DSGXSoftwareSpanList activeSpans;
struct Table bucket;
struct DSGXSoftwareSpan** bucket;
uint16_t depthBuffer[DS_VIDEO_HORIZONTAL_PIXELS];
color_t* scanlineCache;

12
src/ds/gx/software.c
View File

@ -144,7 +144,7 @@ static void DSGXSoftwareRendererInit(struct DSGXRenderer* renderer) {
DSGXSoftwarePolygonListInit(&softwareRenderer->activePolys, DS_GX_POLYGON_BUFFER_SIZE / 4);
DSGXSoftwareEdgeListInit(&softwareRenderer->activeEdges, DS_GX_POLYGON_BUFFER_SIZE);
DSGXSoftwareSpanListInit(&softwareRenderer->activeSpans, DS_GX_POLYGON_BUFFER_SIZE / 2);
TableInit(&softwareRenderer->bucket, DS_GX_POLYGON_BUFFER_SIZE / 8, NULL);
softwareRenderer->bucket = anonymousMemoryMap(sizeof(*softwareRenderer->bucket) * DS_GX_POLYGON_BUFFER_SIZE);
softwareRenderer->scanlineCache = anonymousMemoryMap(sizeof(color_t) * DS_VIDEO_HORIZONTAL_PIXELS * 48);
}
@ -158,7 +158,7 @@ static void DSGXSoftwareRendererDeinit(struct DSGXRenderer* renderer) {
DSGXSoftwarePolygonListDeinit(&softwareRenderer->activePolys);
DSGXSoftwareEdgeListDeinit(&softwareRenderer->activeEdges);
DSGXSoftwareSpanListDeinit(&softwareRenderer->activeSpans);
TableDeinit(&softwareRenderer->bucket);
mappedMemoryFree(softwareRenderer->bucket, sizeof(*softwareRenderer->bucket) * DS_GX_POLYGON_BUFFER_SIZE);
mappedMemoryFree(softwareRenderer->scanlineCache, sizeof(color_t) * DS_VIDEO_HORIZONTAL_PIXELS * 48);
}
@ -253,7 +253,7 @@ static void DSGXSoftwareRendererSetRAM(struct DSGXRenderer* renderer, struct DSG
static void DSGXSoftwareRendererDrawScanline(struct DSGXRenderer* renderer, int y) {
struct DSGXSoftwareRenderer* softwareRenderer = (struct DSGXSoftwareRenderer*) renderer;
DSGXSoftwareSpanListClear(&softwareRenderer->activeSpans);
TableClear(&softwareRenderer->bucket);
memset(softwareRenderer->bucket, 0, sizeof(*softwareRenderer->bucket) * DS_GX_POLYGON_BUFFER_SIZE);
size_t i;
for (i = DSGXSoftwareEdgeListSize(&softwareRenderer->activeEdges); i; --i) {
size_t idx = i - 1;
@ -266,17 +266,17 @@ static void DSGXSoftwareRendererDrawScanline(struct DSGXRenderer* renderer, int
}
unsigned poly = edge->polyId;
struct DSGXSoftwareSpan* span = TableLookup(&softwareRenderer->bucket, poly);
struct DSGXSoftwareSpan* span = softwareRenderer->bucket[poly];
if (span) {
_edgeToSpan(span, edge, 1, y);
TableRemove(&softwareRenderer->bucket, poly);
softwareRenderer->bucket[poly] = NULL;
} else {
span = DSGXSoftwareSpanListAppend(&softwareRenderer->activeSpans);
if (!_edgeToSpan(span, edge, 0, y)) {
// Horizontal line
DSGXSoftwareSpanListShift(&softwareRenderer->activeSpans, DSGXSoftwareSpanListSize(&softwareRenderer->activeSpans) - 1, 1);
} else {
TableInsert(&softwareRenderer->bucket, poly, span);
softwareRenderer->bucket[poly] = span;
}
}
}