ShuriZma
/
mgba
mirror of https://github.com/mgba-emu/mgba.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

DS Video: Display swapping

This commit is contained in:
Vicki Pfau 2017-02-22 10:57:48 -08:00
parent 9ecaaa5d4a
commit 2636d3a767
4 changed files with 22 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
include/mgba/internal/ds/renderers/software.h
View File

@ -21,6 +21,7 @@ struct DSVideoSoftwareRenderer {
DSRegisterDISPCNT dispcntA;
DSRegisterDISPCNT dispcntB;
DSRegisterPOWCNT1 powcnt;
color_t* outputBuffer;
int outputBufferStride;

4
include/mgba/internal/ds/video.h
View File

@ -58,6 +58,10 @@ DECL_BITS(DSRegisterDISPCNT, CharBase, 24, 3);
DECL_BITS(DSRegisterDISPCNT, ScreenBase, 27, 3);
// TODO
DECL_BITFIELD(DSRegisterPOWCNT1, uint16_t);
// TODO
DECL_BIT(DSRegisterPOWCNT1, Swap, 15);
struct DSVideoRenderer {
void (*init)(struct DSVideoRenderer* renderer);
void (*reset)(struct DSVideoRenderer* renderer);

5
src/ds/io.c
View File

@ -440,6 +440,11 @@ void DS9IOWrite(struct DS* ds, uint32_t address, uint16_t value) {
ds->memory.io9[DS9_REG_SQRTCNT >> 1] = _scheduleSqrt(ds, ds->memory.io9[DS9_REG_SQRTCNT >> 1]);
break;
// High Video
case DS9_REG_POWCNT1:
value = ds->video.renderer->writeVideoRegister(ds->video.renderer, address, value);
break;
default:
{
uint32_t v2 = DSIOWrite(&ds->ds9, address, value);

17
src/ds/renderers/software.c
View File

@ -42,9 +42,11 @@ static void DSVideoSoftwareRendererInit(struct DSVideoRenderer* renderer) {
softwareRenderer->engA.d.palette = &renderer->palette[0];
softwareRenderer->engA.d.oam = &renderer->oam->oam[0];
softwareRenderer->engA.masterEnd = DS_VIDEO_HORIZONTAL_PIXELS;
softwareRenderer->engA.outputBufferStride = softwareRenderer->outputBufferStride;
softwareRenderer->engB.d.palette = &renderer->palette[512];
softwareRenderer->engB.d.oam = &renderer->oam->oam[1];
softwareRenderer->engB.masterEnd = DS_VIDEO_HORIZONTAL_PIXELS;
softwareRenderer->engB.outputBufferStride = softwareRenderer->outputBufferStride;
DSVideoSoftwareRendererReset(renderer);
}
@ -113,6 +115,9 @@ static uint16_t DSVideoSoftwareRendererWriteVideoRegister(struct DSVideoRenderer
softwareRenderer->dispcntB |= value << 16;
GBAVideoSoftwareRendererUpdateDISPCNTB(softwareRenderer);
break;
case DS9_REG_POWCNT1:
value &= 0x810F;
softwareRenderer->powcnt = value;
}
return value;
}
@ -222,11 +227,13 @@ static void _drawScanlineB(struct DSVideoSoftwareRenderer* softwareRenderer, int
static void DSVideoSoftwareRendererDrawScanline(struct DSVideoRenderer* renderer, int y) {
struct DSVideoSoftwareRenderer* softwareRenderer = (struct DSVideoSoftwareRenderer*) renderer;
softwareRenderer->engA.outputBuffer = softwareRenderer->outputBuffer;
softwareRenderer->engB.outputBuffer = &softwareRenderer->outputBuffer[softwareRenderer->outputBufferStride * DS_VIDEO_VERTICAL_PIXELS];
softwareRenderer->engA.outputBufferStride = softwareRenderer->outputBufferStride;
softwareRenderer->engB.outputBufferStride = softwareRenderer->outputBufferStride;
if (!DSRegisterPOWCNT1IsSwap(softwareRenderer->powcnt)) {
softwareRenderer->engA.outputBuffer = &softwareRenderer->outputBuffer[softwareRenderer->outputBufferStride * DS_VIDEO_VERTICAL_PIXELS];
softwareRenderer->engB.outputBuffer = softwareRenderer->outputBuffer;
} else {
softwareRenderer->engA.outputBuffer = softwareRenderer->outputBuffer;
softwareRenderer->engB.outputBuffer = &softwareRenderer->outputBuffer[softwareRenderer->outputBufferStride * DS_VIDEO_VERTICAL_PIXELS];
}
_drawScanlineA(softwareRenderer, y);
_drawScanlineB(softwareRenderer, y);