M src/gba/renderers/video-software.c → src/gba/renderers/video-software.c

@@ -29,6 +29,7 @@ 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 _drawBackgroundMode5(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);
@@ -453,6 +454,9 @@ break;
 			case 4:
 				_drawBackgroundMode4(renderer, &renderer->bg[2], y);
 				break;
+			case 5:
+				_drawBackgroundMode5(renderer, &renderer->bg[2], y);
+				break;
 			}
 			renderer->bg[2].sx += renderer->bg[2].dmx;
 			renderer->bg[2].sy += renderer->bg[2].dmy;
@@ -811,6 +815,7 @@ }
 }
 
 #define BACKGROUND_BITMAP_INIT \
+	(void)(unused); \
 	int32_t x = background->sx - background->dx; \
 	int32_t y = background->sy - background->dy; \
 	int32_t localX; \
@@ -821,11 +826,11 @@ flags |= FLAG_TARGET_1 * (background->target1 && renderer->blendEffect == BLEND_ALPHA); \
 	flags |= FLAG_TARGET_2 * background->target2; \
 	int variant = background->target1 && (renderer->blendEffect == BLEND_BRIGHTEN || renderer->blendEffect == BLEND_DARKEN);
 
-#define BACKGROUND_BITMAP_ITERATE \
+#define BACKGROUND_BITMAP_ITERATE(W, H) \
 	x += background->dx; \
 	y += background->dy; \
 	\
-	if (x < 0 || y < 0 || (x >> 8) >= VIDEO_HORIZONTAL_PIXELS || (y >> 8) >= VIDEO_VERTICAL_PIXELS) { \
+	if (x < 0 || y < 0 || (x >> 8) >= W || (y >> 8) >= H) { \
 		continue; \
 	} else { \
 		localX = x; \
@@ -833,7 +838,6 @@ localY = y; \
 	}
 
 static void _drawBackgroundMode2(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int unused) {
-	(void)(unused);
 	int sizeAdjusted = 0x8000 << background->size;
 
 	BACKGROUND_BITMAP_INIT;
@@ -871,8 +875,6 @@ }
 }
 
 static void _drawBackgroundMode3(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int unused) {
-	(void)(unused);
-
 	BACKGROUND_BITMAP_INIT;
 
 	uint16_t color;
@@ -880,7 +882,7 @@ uint32_t color32;
 
 	int outX;
 	for (outX = 0; outX < VIDEO_HORIZONTAL_PIXELS; ++outX) {
-		BACKGROUND_BITMAP_ITERATE;
+		BACKGROUND_BITMAP_ITERATE(VIDEO_HORIZONTAL_PIXELS, VIDEO_VERTICAL_PIXELS);
 
 		color = ((uint16_t*)renderer->d.vram)[(localX >> 8) + (localY >> 8) * VIDEO_HORIZONTAL_PIXELS];
 		color32 = 0;
@@ -901,8 +903,6 @@ }
 }
 
 static void _drawBackgroundMode4(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int unused) {
-	(void)(unused);
-
 	BACKGROUND_BITMAP_INIT;
 
 	uint16_t color;
@@ -913,7 +913,7 @@ }
 
 	int outX;
 	for (outX = 0; outX < VIDEO_HORIZONTAL_PIXELS; ++outX) {
-		BACKGROUND_BITMAP_ITERATE;
+		BACKGROUND_BITMAP_ITERATE(VIDEO_HORIZONTAL_PIXELS, VIDEO_VERTICAL_PIXELS);
 
 		color = ((uint8_t*)renderer->d.vram)[offset + (localX >> 8) + (localY >> 8) * VIDEO_HORIZONTAL_PIXELS];
 
@@ -922,6 +922,38 @@ if (!variant) {
 				_composite(renderer, outX, renderer->normalPalette[color] | flags);
 			} else {
 				_composite(renderer, outX, renderer->variantPalette[color] | flags);
+			}
+		}
+	}
+}
+
+static void _drawBackgroundMode5(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int unused) {
+	BACKGROUND_BITMAP_INIT;
+
+	uint16_t color;
+	uint32_t color32;
+	uint32_t offset = 0;
+	if (renderer->dispcnt.frameSelect) {
+		offset = 0xA000;
+	}
+
+	int outX;
+	for (outX = 0; outX < VIDEO_HORIZONTAL_PIXELS; ++outX) {
+		BACKGROUND_BITMAP_ITERATE(160, 128);
+
+		color = ((uint16_t*)renderer->d.vram)[(localX >> 8) + (localY >> 8) * 160];
+		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);
 			}
 		}
 	}