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GBA Video: Fix BLDY for semitransparent sprite on non-target-2 backgrounds

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This commit is contained in:
Vicki Pfau 2019-12-31 00:05:59 -08:00
parent b9a0e14561
commit ed2353ff76
7 changed files with 10 additions and 6 deletions
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3
CHANGES
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@ -91,8 +91,9 @@ Emulation fixes:
- ARM: Partially fix LDM/STM writeback with empty register list
- ARM: Fix stepping when events are pending
- GBA DMA: Fix case where DMAs could get misaligned (fixes mgba.io/i/1092)
- GBA Video: Fix OpenGL renderer 512x512 backgrounds (fixes mgba.io/i/1572)
- GBA Memory: Fix open bus from IWRAM (fixes mgba.io/i/1575)
- GBA Video: Fix OpenGL renderer 512x512 backgrounds (fixes mgba.io/i/1572)
- GBA Video: Fix BLDY for semitransparent sprite on non-target-2 backgrounds
Other fixes:
- 3DS: Fix screen darkening (fixes mgba.io/i/1562)
- Core: Fix uninitialized memory issues with graphics caches

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cinema/gba/blend/obj-semitrans-brighten/baseline_0000.png Normal file
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cinema/gba/blend/obj-semitrans-brighten/baseline_0001.png Normal file
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cinema/gba/blend/obj-semitrans-brighten/test.mvl Normal file
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3
include/mgba/internal/gba/renderers/video-software.h
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@ -131,7 +131,8 @@ struct GBAVideoSoftwareRenderer {
struct GBAVideoSoftwareBackground bg[4];
int oamDirty;
bool forceTarget1;
bool oamDirty;
int oamMax;
struct GBAVideoRendererSprite sprites[128];
int16_t objOffsetX;

3
src/gba/renderers/software-obj.c
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@ -165,7 +165,7 @@ int GBAVideoSoftwareRendererPreprocessSprite(struct GBAVideoSoftwareRenderer* re
}
int objwinSlowPath = GBARegisterDISPCNTIsObjwinEnable(renderer->dispcnt) && GBAWindowControlGetBlendEnable(renderer->objwin.packed) != GBAWindowControlIsBlendEnable(renderer->currentWindow.packed);
int variant = renderer->target1Obj &&
int variant = (renderer->target1Obj || GBAObjAttributesAGetMode(sprite->a) == OBJ_MODE_SEMITRANSPARENT) &&
GBAWindowControlIsBlendEnable(renderer->currentWindow.packed) &&
(renderer->blendEffect == BLEND_BRIGHTEN || renderer->blendEffect == BLEND_DARKEN);
if (GBAObjAttributesAGetMode(sprite->a) == OBJ_MODE_SEMITRANSPARENT || objwinSlowPath) {
@ -175,6 +175,7 @@ int GBAVideoSoftwareRendererPreprocessSprite(struct GBAVideoSoftwareRenderer* re
target2 |= renderer->bg[2].target2;
target2 |= renderer->bg[3].target2;
if (target2) {
renderer->forceTarget1 = true;
flags |= FLAG_REBLEND;
variant = 0;
} else {

7
src/gba/renderers/video-software.c
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@ -592,6 +592,7 @@ static void GBAVideoSoftwareRendererDrawScanline(struct GBAVideoRenderer* render
_updatePalettes(softwareRenderer);
softwareRenderer->blendDirty = false;
}
softwareRenderer->forceTarget1 = false;
int w;
x = 0;
@ -622,7 +623,7 @@ static void GBAVideoSoftwareRendererDrawScanline(struct GBAVideoRenderer* render
_drawScanline(softwareRenderer, y);
if (softwareRenderer->target2Bd) {
if (softwareRenderer->forceTarget1 && softwareRenderer->target2Bd) {
x = 0;
for (w = 0; w < softwareRenderer->nWindows; ++w) {
uint32_t backdrop = 0;
@ -640,9 +641,9 @@ static void GBAVideoSoftwareRendererDrawScanline(struct GBAVideoRenderer* render
}
}
}
if (softwareRenderer->target1Obj && (softwareRenderer->blendEffect == BLEND_DARKEN || softwareRenderer->blendEffect == BLEND_BRIGHTEN)) {
if (softwareRenderer->forceTarget1 && (softwareRenderer->blendEffect == BLEND_DARKEN || softwareRenderer->blendEffect == BLEND_BRIGHTEN)) {
x = 0;
uint32_t mask = FLAG_REBLEND | FLAG_TARGET_1 | FLAG_IS_BACKGROUND;
uint32_t mask = FLAG_REBLEND | FLAG_IS_BACKGROUND;
uint32_t match = FLAG_REBLEND;
if (GBARegisterDISPCNTIsObjwinEnable(softwareRenderer->dispcnt)) {
mask |= FLAG_OBJWIN;