Implement modes 3 and 4
Jeffrey Pfau jeffrey@endrift.com
Fri, 19 Jul 2013 21:51:14 -0700
1 files changed,
97 insertions(+),
0 deletions(-)
M
src/gba/renderers/video-software.c
→
src/gba/renderers/video-software.c
@@ -27,6 +27,8 @@
static void _drawScanline(struct GBAVideoSoftwareRenderer* renderer, 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 _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 _preprocessSprite(struct GBAVideoSoftwareRenderer* renderer, struct GBAObj* sprite, int y); static void _postprocessSprite(struct GBAVideoSoftwareRenderer* renderer, int priority);@@ -445,6 +447,12 @@ case 1:
case 2: _drawBackgroundMode2(renderer, &renderer->bg[2], y); 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].sy += renderer->bg[2].dmy;@@ -843,6 +851,95 @@ if (!variant) {
_composite(renderer, outX, renderer->normalPalette[tileData] | flags); } else { _composite(renderer, outX, renderer->variantPalette[tileData] | flags); + } + } + } +} + +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); } } }