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

Replace bit packed structs in sprites with bitfields

This commit is contained in:
Jeffrey Pfau 2014-10-02 00:19:50 -07:00
parent 235141f1f3
commit b0726d0185
3 changed files with 76 additions and 103 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

86
src/gba/gba-video.h
View File

@ -43,69 +43,45 @@ enum ObjShape {
OBJ_SHAPE_VERTICAL = 2 OBJ_SHAPE_VERTICAL = 2
}; };
DECL_BITFIELD(GBAObjAttributes, uint32_t);
DECL_BITS(GBAObjAttributes, Y, 0, 8);
DECL_BIT(GBAObjAttributes, Transformed, 8);
DECL_BIT(GBAObjAttributes, Disable, 9);
DECL_BIT(GBAObjAttributes, DoubleSize, 9);
DECL_BITS(GBAObjAttributes, Mode, 10, 2);
DECL_BIT(GBAObjAttributes, Mosaic, 12);
DECL_BIT(GBAObjAttributes, 256Color, 13);
DECL_BITS(GBAObjAttributes, Shape, 14, 2);
DECL_BITS(GBAObjAttributes, X, 16, 9);
DECL_BITS(GBAObjAttributes, MatIndex, 25, 5);
DECL_BIT(GBAObjAttributes, HFlip, 28);
DECL_BIT(GBAObjAttributes, VFlip, 29);
DECL_BITS(GBAObjAttributes, Size, 30, 2);
DECL_BITFIELD(GBAObjExtraAttributes, uint16_t);
DECL_BITS(GBAObjExtraAttributes, Tile, 0, 10);
DECL_BITS(GBAObjExtraAttributes, Priority, 10, 2);
DECL_BITS(GBAObjExtraAttributes, Palette, 12, 4);
struct GBAObj { struct GBAObj {
unsigned y : 8; GBAObjAttributes attr;
unsigned transformed : 1; GBAObjExtraAttributes attr2;
unsigned disable : 1;
enum ObjMode mode : 2;
unsigned mosaic : 1;
unsigned multipalette : 1;
enum ObjShape shape : 2;
int x : 9; uint16_t d;
int : 3;
unsigned hflip : 1;
unsigned vflip : 1;
unsigned size : 2;
unsigned tile : 10;
unsigned priority : 2;
unsigned palette : 4;
int : 16;
};
struct GBATransformedObj {
unsigned y : 8;
unsigned transformed : 1;
unsigned doublesize : 1;
enum ObjMode mode : 2;
unsigned mosaic : 1;
unsigned multipalette : 1;
enum ObjShape shape : 2;
int x : 9;
unsigned matIndex : 5;
unsigned size : 2;
unsigned tile : 10;
unsigned priority : 2;
unsigned palette : 4;
int : 16;
}; };
union GBAOAM { union GBAOAM {
struct GBAObj obj[128]; struct GBAObj obj[128];
struct GBATransformedObj tobj[128];
struct GBAOAMMatrix { struct GBAOAMMatrix {
int : 16; int16_t padding0[3];
int : 16; int16_t a;
int : 16; int16_t padding1[3];
int a : 16; int16_t b;
int : 16; int16_t padding2[3];
int : 16; int16_t c;
int : 16; int16_t padding3[3];
int b : 16; int16_t d;
int : 16;
int : 16;
int : 16;
int c : 16;
int : 16;
int : 16;
int : 16;
int d : 16;
} mat[32]; } mat[32];
uint16_t raw[512]; uint16_t raw[512];

88
src/gba/renderers/video-software.c
View File

@ -51,7 +51,7 @@ static void _drawBackgroundMode3(struct GBAVideoSoftwareRenderer* renderer, stru
static void _drawBackgroundMode4(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int y); static void _drawBackgroundMode4(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int y);
static void _drawBackgroundMode5(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int y); static void _drawBackgroundMode5(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int y);
static void _cleanOAM(struct GBAVideoSoftwareRenderer* renderer); static void _cleanOAM(struct GBAVideoSoftwareRenderer* renderer);
static int _preprocessTransformedSprite(struct GBAVideoSoftwareRenderer* renderer, struct GBATransformedObj* sprite, int y); static int _preprocessTransformedSprite(struct GBAVideoSoftwareRenderer* renderer, struct GBAObj* sprite, int y);
static int _preprocessSprite(struct GBAVideoSoftwareRenderer* renderer, struct GBAObj* sprite, int y); static int _preprocessSprite(struct GBAVideoSoftwareRenderer* renderer, struct GBAObj* sprite, int y);
static void _postprocessSprite(struct GBAVideoSoftwareRenderer* renderer, unsigned priority); static void _postprocessSprite(struct GBAVideoSoftwareRenderer* renderer, unsigned priority);
@ -395,14 +395,14 @@ static void _cleanOAM(struct GBAVideoSoftwareRenderer* renderer) {
int oamMax = 0; int oamMax = 0;
for (i = 0; i < 128; ++i) { for (i = 0; i < 128; ++i) {
struct GBAObj* obj = &renderer->d.oam->obj[i]; struct GBAObj* obj = &renderer->d.oam->obj[i];
if (obj->transformed || !obj->disable) { if (GBAObjAttributesIsTransformed(obj->attr) || !GBAObjAttributesIsDisable(obj->attr)) {
int height = _objSizes[obj->shape * 8 + obj->size * 2 + 1]; int height = _objSizes[GBAObjAttributesGetShape(obj->attr) * 8 + GBAObjAttributesGetSize(obj->attr) * 2 + 1];
if (obj->transformed) { if (GBAObjAttributesIsTransformed(obj->attr)) {
height <<= ((struct GBATransformedObj*) obj)->doublesize; height <<= GBAObjAttributesGetDoubleSize(obj->attr);
} }
if (obj->y < VIDEO_VERTICAL_PIXELS || obj->y + height >= VIDEO_VERTICAL_TOTAL_PIXELS) { if (GBAObjAttributesGetY(obj->attr) < VIDEO_VERTICAL_PIXELS || GBAObjAttributesGetY(obj->attr) + height >= VIDEO_VERTICAL_TOTAL_PIXELS) {
renderer->sprites[oamMax].y = obj->y; renderer->sprites[oamMax].y = GBAObjAttributesGetY(obj->attr);
renderer->sprites[oamMax].endY = obj->y + height; renderer->sprites[oamMax].endY = GBAObjAttributesGetY(obj->attr) + height;
renderer->sprites[oamMax].obj = *obj; renderer->sprites[oamMax].obj = *obj;
++oamMax; ++oamMax;
} }
@ -653,18 +653,18 @@ static void _drawScanline(struct GBAVideoSoftwareRenderer* renderer, int y) {
for (i = 0; i < renderer->oamMax; ++i) { for (i = 0; i < renderer->oamMax; ++i) {
int localY = y; int localY = y;
struct GBAVideoSoftwareSprite* sprite = &renderer->sprites[i]; struct GBAVideoSoftwareSprite* sprite = &renderer->sprites[i];
if (sprite->obj.mosaic) { if (GBAObjAttributesIsMosaic(sprite->obj.attr)) {
localY = mosaicY; localY = mosaicY;
} }
if ((localY < sprite->y && (sprite->endY - 256 < 0 || localY >= sprite->endY - 256)) || localY >= sprite->endY) { if ((localY < sprite->y && (sprite->endY - 256 < 0 || localY >= sprite->endY - 256)) || localY >= sprite->endY) {
continue; continue;
} }
if (sprite->obj.transformed) { if (GBAObjAttributesIsTransformed(sprite->obj.attr)) {
drawn = _preprocessTransformedSprite(renderer, &sprite->tobj, localY); drawn = _preprocessTransformedSprite(renderer, &sprite->obj, localY);
} else { } else {
drawn = _preprocessSprite(renderer, &sprite->obj, localY); drawn = _preprocessSprite(renderer, &sprite->obj, localY);
} }
spriteLayers |= drawn << sprite->obj.priority; spriteLayers |= drawn << GBAObjExtraAttributesGetPriority(sprite->obj.attr2);
} }
} }
} }
@ -1514,18 +1514,18 @@ static void _drawBackgroundMode5(struct GBAVideoSoftwareRenderer* renderer, stru
} }
static int _preprocessSprite(struct GBAVideoSoftwareRenderer* renderer, struct GBAObj* sprite, int y) { static int _preprocessSprite(struct GBAVideoSoftwareRenderer* renderer, struct GBAObj* sprite, int y) {
int width = _objSizes[sprite->shape * 8 + sprite->size * 2]; int width = _objSizes[GBAObjAttributesGetShape(sprite->attr) * 8 + GBAObjAttributesGetSize(sprite->attr) * 2];
int height = _objSizes[sprite->shape * 8 + sprite->size * 2 + 1]; int height = _objSizes[GBAObjAttributesGetShape(sprite->attr) * 8 + GBAObjAttributesGetSize(sprite->attr) * 2 + 1];
int start = renderer->start; int start = renderer->start;
int end = renderer->end; int end = renderer->end;
uint32_t flags = sprite->priority << OFFSET_PRIORITY; uint32_t flags = GBAObjExtraAttributesGetPriority(sprite->attr2) << OFFSET_PRIORITY;
flags |= FLAG_TARGET_1 * ((renderer->currentWindow.blendEnable && renderer->target1Obj && renderer->blendEffect == BLEND_ALPHA) || sprite->mode == OBJ_MODE_SEMITRANSPARENT); flags |= FLAG_TARGET_1 * ((renderer->currentWindow.blendEnable && renderer->target1Obj && renderer->blendEffect == BLEND_ALPHA) || GBAObjAttributesGetMode(sprite->attr) == OBJ_MODE_SEMITRANSPARENT);
flags |= FLAG_OBJWIN * (sprite->mode == OBJ_MODE_OBJWIN); flags |= FLAG_OBJWIN * (GBAObjAttributesGetMode(sprite->attr) == OBJ_MODE_OBJWIN);
int x = sprite->x; int x = GBAObjAttributesGetX(sprite->attr);
uint16_t* vramBase = &renderer->d.vram[BASE_TILE >> 1]; uint16_t* vramBase = &renderer->d.vram[BASE_TILE >> 1];
unsigned charBase = sprite->tile * 0x20; unsigned charBase = GBAObjExtraAttributesGetTile(sprite->attr2) * 0x20;
int variant = renderer->target1Obj && renderer->currentWindow.blendEnable && (renderer->blendEffect == BLEND_BRIGHTEN || renderer->blendEffect == BLEND_DARKEN); int variant = renderer->target1Obj && renderer->currentWindow.blendEnable && (renderer->blendEffect == BLEND_BRIGHTEN || renderer->blendEffect == BLEND_DARKEN);
if (sprite->mode == OBJ_MODE_SEMITRANSPARENT && renderer->target2Bd) { if (GBAObjAttributesGetMode(sprite->attr) == OBJ_MODE_SEMITRANSPARENT && renderer->target2Bd) {
// Hack: if a sprite is blended, then the variant palette is not used, but we don't know if it's blended in advance // Hack: if a sprite is blended, then the variant palette is not used, but we don't know if it's blended in advance
variant = 0; variant = 0;
} }
@ -1537,17 +1537,17 @@ static int _preprocessSprite(struct GBAVideoSoftwareRenderer* renderer, struct G
int outX = x >= start ? x : start; int outX = x >= start ? x : start;
int condition = x + width; int condition = x + width;
int mosaicH = 1; int mosaicH = 1;
if (sprite->mosaic) { if (GBAObjAttributesIsMosaic(sprite->attr)) {
mosaicH = renderer->mosaic.objH + 1; mosaicH = renderer->mosaic.objH + 1;
if (condition % mosaicH) { if (condition % mosaicH) {
condition += mosaicH - (condition % mosaicH); condition += mosaicH - (condition % mosaicH);
} }
} }
int inY = y - sprite->y; int inY = y - (int) GBAObjAttributesGetY(sprite->attr);
if (sprite->y + height - 256 >= 0) { if ((int) GBAObjAttributesGetY(sprite->attr) + height - 256 >= 0) {
inY += 256; inY += 256;
} }
if (sprite->vflip) { if (GBAObjAttributesIsVFlip(sprite->attr)) {
inY = height - inY - 1; inY = height - inY - 1;
} }
if (end < condition) { if (end < condition) {
@ -1555,15 +1555,15 @@ static int _preprocessSprite(struct GBAVideoSoftwareRenderer* renderer, struct G
} }
int inX = outX - x; int inX = outX - x;
int xOffset = 1; int xOffset = 1;
if (sprite->hflip) { if (GBAObjAttributesIsHFlip(sprite->attr)) {
inX = width - inX - 1; inX = width - inX - 1;
xOffset = -1; xOffset = -1;
} }
if (!sprite->multipalette) { if (!GBAObjAttributesIs256Color(sprite->attr)) {
palette = &palette[sprite->palette << 4]; palette = &palette[GBAObjExtraAttributesGetPalette(sprite->attr2) << 4];
if (flags & FLAG_OBJWIN) { if (flags & FLAG_OBJWIN) {
SPRITE_NORMAL_LOOP(16, OBJWIN); SPRITE_NORMAL_LOOP(16, OBJWIN);
} else if (sprite->mosaic) { } else if (GBAObjAttributesIsMosaic(sprite->attr)) {
SPRITE_MOSAIC_LOOP(16, NORMAL); SPRITE_MOSAIC_LOOP(16, NORMAL);
} else { } else {
SPRITE_NORMAL_LOOP(16, NORMAL); SPRITE_NORMAL_LOOP(16, NORMAL);
@ -1571,7 +1571,7 @@ static int _preprocessSprite(struct GBAVideoSoftwareRenderer* renderer, struct G
} else { } else {
if (flags & FLAG_OBJWIN) { if (flags & FLAG_OBJWIN) {
SPRITE_NORMAL_LOOP(256, OBJWIN); SPRITE_NORMAL_LOOP(256, OBJWIN);
} else if (sprite->mosaic) { } else if (GBAObjAttributesIsMosaic(sprite->attr)) {
SPRITE_MOSAIC_LOOP(256, NORMAL); SPRITE_MOSAIC_LOOP(256, NORMAL);
} else { } else {
SPRITE_NORMAL_LOOP(256, NORMAL); SPRITE_NORMAL_LOOP(256, NORMAL);
@ -1580,22 +1580,22 @@ static int _preprocessSprite(struct GBAVideoSoftwareRenderer* renderer, struct G
return 1; return 1;
} }
static int _preprocessTransformedSprite(struct GBAVideoSoftwareRenderer* renderer, struct GBATransformedObj* sprite, int y) { static int _preprocessTransformedSprite(struct GBAVideoSoftwareRenderer* renderer, struct GBAObj* sprite, int y) {
int width = _objSizes[sprite->shape * 8 + sprite->size * 2]; int width = _objSizes[GBAObjAttributesGetShape(sprite->attr) * 8 + GBAObjAttributesGetSize(sprite->attr) * 2];
int height = _objSizes[sprite->shape * 8 + sprite->size * 2 + 1]; int height = _objSizes[GBAObjAttributesGetShape(sprite->attr) * 8 + GBAObjAttributesGetSize(sprite->attr) * 2 + 1];
int totalWidth = width << sprite->doublesize; int totalWidth = width << GBAObjAttributesGetDoubleSize(sprite->attr);
int totalHeight = height << sprite->doublesize; int totalHeight = height << GBAObjAttributesGetDoubleSize(sprite->attr);
int start = renderer->start; int start = renderer->start;
int end = renderer->end; int end = renderer->end;
uint32_t flags = sprite->priority << OFFSET_PRIORITY; uint32_t flags = GBAObjExtraAttributesGetPriority(sprite->attr2) << OFFSET_PRIORITY;
flags |= FLAG_TARGET_1 * ((renderer->currentWindow.blendEnable && renderer->target1Obj && renderer->blendEffect == BLEND_ALPHA) || sprite->mode == OBJ_MODE_SEMITRANSPARENT); flags |= FLAG_TARGET_1 * ((renderer->currentWindow.blendEnable && renderer->target1Obj && renderer->blendEffect == BLEND_ALPHA) || GBAObjAttributesGetMode(sprite->attr) == OBJ_MODE_SEMITRANSPARENT);
flags |= FLAG_OBJWIN * (sprite->mode == OBJ_MODE_OBJWIN); flags |= FLAG_OBJWIN * (GBAObjAttributesGetMode(sprite->attr) == OBJ_MODE_OBJWIN);
int x = sprite->x; int x = GBAObjAttributesGetX(sprite->attr);
uint16_t* vramBase = &renderer->d.vram[BASE_TILE >> 1]; uint16_t* vramBase = &renderer->d.vram[BASE_TILE >> 1];
unsigned charBase = sprite->tile * 0x20; unsigned charBase = GBAObjExtraAttributesGetTile(sprite->attr2) * 0x20;
struct GBAOAMMatrix* mat = &renderer->d.oam->mat[sprite->matIndex]; struct GBAOAMMatrix* mat = &renderer->d.oam->mat[GBAObjAttributesGetMatIndex(sprite->attr)];
int variant = renderer->target1Obj && renderer->currentWindow.blendEnable && (renderer->blendEffect == BLEND_BRIGHTEN || renderer->blendEffect == BLEND_DARKEN); int variant = renderer->target1Obj && renderer->currentWindow.blendEnable && (renderer->blendEffect == BLEND_BRIGHTEN || renderer->blendEffect == BLEND_DARKEN);
if (sprite->mode == OBJ_MODE_SEMITRANSPARENT && renderer->target2Bd) { if (GBAObjAttributesGetMode(sprite->attr) == OBJ_MODE_SEMITRANSPARENT && renderer->target2Bd) {
// Hack: if a sprite is blended, then the variant palette is not used, but we don't know if it's blended in advance // Hack: if a sprite is blended, then the variant palette is not used, but we don't know if it's blended in advance
variant = 0; variant = 0;
} }
@ -1603,12 +1603,12 @@ static int _preprocessTransformedSprite(struct GBAVideoSoftwareRenderer* rendere
if (variant) { if (variant) {
palette = &renderer->variantPalette[0x100]; palette = &renderer->variantPalette[0x100];
} }
int inY = y - sprite->y; int inY = y - (int) GBAObjAttributesGetY(sprite->attr);
if (inY < 0) { if (inY < 0) {
inY += 256; inY += 256;
} }
if (!sprite->multipalette) { if (!GBAObjAttributesIs256Color(sprite->attr)) {
palette = &palette[sprite->palette << 4]; palette = &palette[GBAObjExtraAttributesGetPalette(sprite->attr2) << 4];
if (flags & FLAG_OBJWIN) { if (flags & FLAG_OBJWIN) {
SPRITE_TRANSFORMED_LOOP(16, OBJWIN); SPRITE_TRANSFORMED_LOOP(16, OBJWIN);
} else { } else {

3
src/gba/renderers/video-software.h
View File

@ -12,10 +12,7 @@ typedef uint32_t color_t;
#endif #endif
struct GBAVideoSoftwareSprite { struct GBAVideoSoftwareSprite {
union {
struct GBAObj obj; struct GBAObj obj;
struct GBATransformedObj tobj;
};
int y; int y;
int endY; int endY;
}; };