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Implement modes 3 and 4

This commit is contained in:
Jeffrey Pfau 2013-07-19 21:51:14 -07:00
parent 1e4a82ef5b
commit 90ddf937a5
1 changed files with 97 additions and 0 deletions
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97
src/gba/renderers/video-software.c
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@ -27,6 +27,8 @@ static void GBAVideoSoftwareRendererWriteBLDCNT(struct GBAVideoSoftwareRenderer*
static void _drawScanline(struct GBAVideoSoftwareRenderer* renderer, int y); static void _drawScanline(struct GBAVideoSoftwareRenderer* renderer, int y);
static void _drawBackgroundMode0(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int y); static void _drawBackgroundMode0(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int y);
static void _drawBackgroundMode2(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int y); static void _drawBackgroundMode2(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int y);
static void _drawBackgroundMode3(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int y);
static void _drawBackgroundMode4(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int y);
static void _preprocessTransformedSprite(struct GBAVideoSoftwareRenderer* renderer, struct GBATransformedObj* sprite, int y); static void _preprocessTransformedSprite(struct GBAVideoSoftwareRenderer* renderer, struct GBATransformedObj* sprite, int y);
static void _preprocessSprite(struct GBAVideoSoftwareRenderer* renderer, struct GBAObj* sprite, int y); static void _preprocessSprite(struct GBAVideoSoftwareRenderer* renderer, struct GBAObj* sprite, int y);
static void _postprocessSprite(struct GBAVideoSoftwareRenderer* renderer, int priority); static void _postprocessSprite(struct GBAVideoSoftwareRenderer* renderer, int priority);
@ -445,6 +447,12 @@ static void _drawScanline(struct GBAVideoSoftwareRenderer* renderer, int y) {
case 2: case 2:
_drawBackgroundMode2(renderer, &renderer->bg[2], y); _drawBackgroundMode2(renderer, &renderer->bg[2], y);
break; break;
case 3:
_drawBackgroundMode3(renderer, &renderer->bg[2], y);
break;
case 4:
_drawBackgroundMode4(renderer, &renderer->bg[2], y);
break;
} }
renderer->bg[2].sx += renderer->bg[2].dmx; renderer->bg[2].sx += renderer->bg[2].dmx;
renderer->bg[2].sy += renderer->bg[2].dmy; renderer->bg[2].sy += renderer->bg[2].dmy;
@ -848,6 +856,95 @@ static void _drawBackgroundMode2(struct GBAVideoSoftwareRenderer* renderer, stru
} }
} }
static void _drawBackgroundMode3(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int unused) {
(void)(unused);
int32_t x = background->sx - background->dx;
int32_t y = background->sy - background->dy;
int32_t localX;
int32_t localY;
int flags = (background->priority << OFFSET_PRIORITY) | FLAG_IS_BACKGROUND;
flags |= FLAG_TARGET_1 * (background->target1 && renderer->blendEffect == BLEND_ALPHA);
flags |= FLAG_TARGET_2 * background->target2;
uint16_t color;
uint32_t color32;
int variant = background->target1 && (renderer->blendEffect == BLEND_BRIGHTEN || renderer->blendEffect == BLEND_DARKEN);
int outX;
for (outX = 0; outX < VIDEO_HORIZONTAL_PIXELS; ++outX) {
x += background->dx;
y += background->dy;
if (x < 0 || y < 0 || (x >> 8) >= VIDEO_HORIZONTAL_PIXELS || (y >> 8) >= VIDEO_VERTICAL_PIXELS) {
continue;
} else {
localX = x;
localY = y;
}
color = ((uint16_t*)renderer->d.vram)[(localX >> 8) + (localY >> 8) * VIDEO_HORIZONTAL_PIXELS];
color32 = 0;
color32 |= (color << 3) & 0xF8;
color32 |= (color << 6) & 0xF800;
color32 |= (color << 9) & 0xF80000;
if (!(renderer->row[outX] & FLAG_FINALIZED)) {
if (!variant) {
_composite(renderer, outX, color32 | flags);
} else if (renderer->blendEffect == BLEND_BRIGHTEN) {
_composite(renderer, outX, _brighten(color32, renderer->bldy) | flags);
} else if (renderer->blendEffect == BLEND_DARKEN) {
_composite(renderer, outX, _darken(color32, renderer->bldy) | flags);
}
}
}
}
static void _drawBackgroundMode4(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int unused) {
(void)(unused);
int32_t x = background->sx - background->dx;
int32_t y = background->sy - background->dy;
int32_t localX;
int32_t localY;
int flags = (background->priority << OFFSET_PRIORITY) | FLAG_IS_BACKGROUND;
flags |= FLAG_TARGET_1 * (background->target1 && renderer->blendEffect == BLEND_ALPHA);
flags |= FLAG_TARGET_2 * background->target2;
uint16_t color;
int variant = background->target1 && (renderer->blendEffect == BLEND_BRIGHTEN || renderer->blendEffect == BLEND_DARKEN);
uint32_t offset = 0;
if (renderer->dispcnt.frameSelect) {
offset = 0xA000;
}
int outX;
for (outX = 0; outX < VIDEO_HORIZONTAL_PIXELS; ++outX) {
x += background->dx;
y += background->dy;
if (x < 0 || y < 0 || (x >> 8) >= VIDEO_HORIZONTAL_PIXELS || (y >> 8) >= VIDEO_VERTICAL_PIXELS) {
continue;
} else {
localX = x;
localY = y;
}
color = ((uint8_t*)renderer->d.vram)[offset + (localX >> 8) + (localY >> 8) * VIDEO_HORIZONTAL_PIXELS];
if (color && !(renderer->row[outX] & FLAG_FINALIZED)) {
if (!variant) {
_composite(renderer, outX, renderer->normalPalette[color] | flags);
} else {
_composite(renderer, outX, renderer->variantPalette[color] | flags);
}
}
}
}
static const int _objSizes[32] = { static const int _objSizes[32] = {
8, 8, 8, 8,
16, 16, 16, 16,