407 lines
14 KiB
C
407 lines
14 KiB
C
/* Copyright (c) 2013-2015 Jeffrey Pfau
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "gba/renderers/software-private.h"
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#define SPRITE_NORMAL_LOOP(DEPTH, TYPE) \
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SPRITE_YBASE_ ## DEPTH(inY); \
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unsigned tileData; \
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for (; outX < condition; ++outX, inX += xOffset) { \
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renderer->spriteCyclesRemaining -= 1; \
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SPRITE_XBASE_ ## DEPTH(inX); \
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SPRITE_DRAW_PIXEL_ ## DEPTH ## _ ## TYPE(inX); \
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}
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#define SPRITE_MOSAIC_LOOP(DEPTH, TYPE) \
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SPRITE_YBASE_ ## DEPTH(inY); \
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unsigned tileData; \
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for (; outX < condition; ++outX, inX += xOffset) { \
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int localX = inX - xOffset * (outX % mosaicH); \
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if (localX < 0) { \
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localX = 0; \
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} else if (localX > width - 1) {\
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localX = width - 1; \
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} \
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SPRITE_XBASE_ ## DEPTH(localX); \
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SPRITE_DRAW_PIXEL_ ## DEPTH ## _ ## TYPE(localX); \
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}
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#define SPRITE_TRANSFORMED_LOOP(DEPTH, TYPE) \
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unsigned tileData; \
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unsigned widthMask = ~(width - 1); \
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unsigned heightMask = ~(height - 1); \
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for (; outX < condition; ++outX, ++inX) { \
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renderer->spriteCyclesRemaining -= 2; \
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xAccum += mat.a; \
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yAccum += mat.c; \
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int localX = xAccum >> 8; \
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int localY = yAccum >> 8; \
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\
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if (localX & widthMask || localY & heightMask) { \
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break; \
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} \
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\
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SPRITE_YBASE_ ## DEPTH(localY); \
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SPRITE_XBASE_ ## DEPTH(localX); \
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SPRITE_DRAW_PIXEL_ ## DEPTH ## _ ## TYPE(localX); \
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}
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#define SPRITE_TRANSFORMED_MOSAIC_LOOP(DEPTH, TYPE) \
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unsigned tileData; \
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unsigned widthMask = ~(width - 1); \
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unsigned heightMask = ~(height - 1); \
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int localX = xAccum >> 8; \
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int localY = yAccum >> 8; \
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for (; outX < condition; ++outX, ++inX) { \
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renderer->spriteCyclesRemaining -= 2; \
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xAccum += mat.a; \
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yAccum += mat.c; \
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\
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if (outX % mosaicH == 0) { \
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localX = xAccum >> 8; \
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localY = yAccum >> 8; \
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} \
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\
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if (localX & widthMask || localY & heightMask) { \
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continue; \
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} \
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\
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SPRITE_YBASE_ ## DEPTH(localY); \
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SPRITE_XBASE_ ## DEPTH(localX); \
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SPRITE_DRAW_PIXEL_ ## DEPTH ## _ ## TYPE(localX); \
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}
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#define SPRITE_XBASE_16(localX) unsigned xBase = (localX & ~0x7) * 4 + ((localX >> 1) & 2);
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#define SPRITE_YBASE_16(localY) unsigned yBase = (localY & ~0x7) * stride + (localY & 0x7) * 4;
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#define SPRITE_DRAW_PIXEL_16_NORMAL(localX) \
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LOAD_16(tileData, ((yBase + charBase + xBase) & 0x7FFE), vramBase); \
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tileData = (tileData >> ((localX & 3) << 2)) & 0xF; \
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current = renderer->spriteLayer[outX]; \
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if ((current & FLAG_ORDER_MASK) > flags && tileData) { \
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renderer->spriteLayer[outX] = palette[tileData] | flags; \
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}
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#define SPRITE_DRAW_PIXEL_16_NORMAL_OBJWIN(localX) \
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LOAD_16(tileData, ((yBase + charBase + xBase) & 0x7FFE), vramBase); \
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tileData = (tileData >> ((localX & 3) << 2)) & 0xF; \
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current = renderer->spriteLayer[outX]; \
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if ((current & FLAG_ORDER_MASK) > flags && tileData) { \
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unsigned color = (renderer->row[outX] & FLAG_OBJWIN) ? objwinPalette[tileData] : palette[tileData]; \
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renderer->spriteLayer[outX] = color | flags; \
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}
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#define SPRITE_DRAW_PIXEL_16_OBJWIN(localX) \
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LOAD_16(tileData, ((yBase + charBase + xBase) & 0x7FFE), vramBase); \
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tileData = (tileData >> ((localX & 3) << 2)) & 0xF; \
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if (tileData) { \
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renderer->row[outX] |= FLAG_OBJWIN; \
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}
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#define SPRITE_XBASE_256(localX) unsigned xBase = (localX & ~0x7) * 8 + (localX & 6);
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#define SPRITE_YBASE_256(localY) unsigned yBase = (localY & ~0x7) * stride + (localY & 0x7) * 8;
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#define SPRITE_DRAW_PIXEL_256_NORMAL(localX) \
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LOAD_16(tileData, ((yBase + charBase + xBase) & 0x7FFE), vramBase); \
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tileData = (tileData >> ((localX & 1) << 3)) & 0xFF; \
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current = renderer->spriteLayer[outX]; \
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if ((current & FLAG_ORDER_MASK) > flags && tileData) { \
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renderer->spriteLayer[outX] = palette[tileData] | flags; \
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}
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#define SPRITE_DRAW_PIXEL_256_NORMAL_OBJWIN(localX) \
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LOAD_16(tileData, ((yBase + charBase + xBase) & 0x7FFE), vramBase); \
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tileData = (tileData >> ((localX & 1) << 3)) & 0xFF; \
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current = renderer->spriteLayer[outX]; \
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if ((current & FLAG_ORDER_MASK) > flags && tileData) { \
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unsigned color = (renderer->row[outX] & FLAG_OBJWIN) ? objwinPalette[tileData] : palette[tileData]; \
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renderer->spriteLayer[outX] = color | flags; \
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}
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#define SPRITE_DRAW_PIXEL_256_OBJWIN(localX) \
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LOAD_16(tileData, ((yBase + charBase + xBase) & 0x7FFE), vramBase); \
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tileData = (tileData >> ((localX & 1) << 3)) & 0xFF; \
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if (tileData) { \
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renderer->row[outX] |= FLAG_OBJWIN; \
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}
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int GBAVideoSoftwareRendererPreprocessSprite(struct GBAVideoSoftwareRenderer* renderer, struct GBAObj* sprite, int y) {
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int width = GBAVideoObjSizes[GBAObjAttributesAGetShape(sprite->a) * 4 + GBAObjAttributesBGetSize(sprite->b)][0];
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int height = GBAVideoObjSizes[GBAObjAttributesAGetShape(sprite->a) * 4 + GBAObjAttributesBGetSize(sprite->b)][1];
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int start = renderer->start;
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int end = renderer->end;
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uint32_t flags = GBAObjAttributesCGetPriority(sprite->c) << OFFSET_PRIORITY;
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flags |= FLAG_TARGET_1 * ((GBAWindowControlIsBlendEnable(renderer->currentWindow.packed) && renderer->target1Obj && renderer->blendEffect == BLEND_ALPHA) || GBAObjAttributesAGetMode(sprite->a) == OBJ_MODE_SEMITRANSPARENT);
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flags |= FLAG_OBJWIN * (GBAObjAttributesAGetMode(sprite->a) == OBJ_MODE_OBJWIN);
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if ((flags & FLAG_OBJWIN) && renderer->currentWindow.priority < renderer->objwin.priority) {
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return 0;
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}
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int32_t x = (uint32_t) GBAObjAttributesBGetX(sprite->b) << 23;
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x >>= 23;
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x += renderer->objOffsetX;
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uint16_t* vramBase = &renderer->d.vram[BASE_TILE >> 1];
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bool align = GBAObjAttributesAIs256Color(sprite->a) && !GBARegisterDISPCNTIsObjCharacterMapping(renderer->dispcnt);
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unsigned charBase = (GBAObjAttributesCGetTile(sprite->c) & ~align) * 0x20;
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if (GBARegisterDISPCNTGetMode(renderer->dispcnt) >= 3 && GBAObjAttributesCGetTile(sprite->c) < 512) {
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return 0;
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}
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int objwinSlowPath = GBARegisterDISPCNTIsObjwinEnable(renderer->dispcnt) && GBAWindowControlGetBlendEnable(renderer->objwin.packed) != GBAWindowControlIsBlendEnable(renderer->currentWindow.packed);
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int variant = renderer->target1Obj &&
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GBAWindowControlIsBlendEnable(renderer->currentWindow.packed) &&
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(renderer->blendEffect == BLEND_BRIGHTEN || renderer->blendEffect == BLEND_DARKEN);
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if (GBAObjAttributesAGetMode(sprite->a) == OBJ_MODE_SEMITRANSPARENT || objwinSlowPath) {
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int target2 = renderer->target2Bd;
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target2 |= renderer->bg[0].target2;
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target2 |= renderer->bg[1].target2;
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target2 |= renderer->bg[2].target2;
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target2 |= renderer->bg[3].target2;
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if (target2) {
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flags |= FLAG_REBLEND;
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variant = 0;
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} else {
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flags &= ~FLAG_TARGET_1;
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}
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}
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color_t* palette = &renderer->normalPalette[0x100];
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color_t* objwinPalette = palette;
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if (variant) {
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palette = &renderer->variantPalette[0x100];
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if (GBAWindowControlIsBlendEnable(renderer->objwin.packed)) {
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objwinPalette = palette;
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}
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}
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int inY = y - ((int) GBAObjAttributesAGetY(sprite->a) + renderer->objOffsetY);
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int stride = GBARegisterDISPCNTIsObjCharacterMapping(renderer->dispcnt) ? (width >> !GBAObjAttributesAIs256Color(sprite->a)) : 0x80;
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uint32_t current;
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if (GBAObjAttributesAIsTransformed(sprite->a)) {
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int totalWidth = width << GBAObjAttributesAGetDoubleSize(sprite->a);
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int totalHeight = height << GBAObjAttributesAGetDoubleSize(sprite->a);
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struct GBAOAMMatrix mat;
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LOAD_16(mat.a, 0, &renderer->d.oam->mat[GBAObjAttributesBGetMatIndex(sprite->b)].a);
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LOAD_16(mat.b, 0, &renderer->d.oam->mat[GBAObjAttributesBGetMatIndex(sprite->b)].b);
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LOAD_16(mat.c, 0, &renderer->d.oam->mat[GBAObjAttributesBGetMatIndex(sprite->b)].c);
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LOAD_16(mat.d, 0, &renderer->d.oam->mat[GBAObjAttributesBGetMatIndex(sprite->b)].d);
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if (inY < 0) {
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inY += 256;
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}
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int outX = x >= start ? x : start;
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int condition = x + totalWidth;
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int inX = outX - x;
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if (end < condition) {
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condition = end;
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}
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int mosaicH = 1;
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if (GBAObjAttributesAIsMosaic(sprite->a)) {
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mosaicH = GBAMosaicControlGetObjH(renderer->mosaic) + 1;
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if (condition % mosaicH) {
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condition += mosaicH - (condition % mosaicH);
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}
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}
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int xAccum = mat.a * (inX - 1 - (totalWidth >> 1)) + mat.b * (inY - (totalHeight >> 1)) + (width << 7);
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int yAccum = mat.c * (inX - 1 - (totalWidth >> 1)) + mat.d * (inY - (totalHeight >> 1)) + (height << 7);
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// Clip off early pixels
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// TODO: Transform end coordinates too
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if (mat.a) {
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if ((xAccum >> 8) < 0) {
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int32_t diffX = -xAccum - 1;
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int32_t x = mat.a ? diffX / mat.a : 0;
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xAccum += mat.a * x;
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yAccum += mat.c * x;
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outX += x;
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inX += x;
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} else if ((xAccum >> 8) >= width) {
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int32_t diffX = (width << 8) - xAccum;
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int32_t x = mat.a ? diffX / mat.a : 0;
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xAccum += mat.a * x;
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yAccum += mat.c * x;
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outX += x;
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inX += x;
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}
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}
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if (mat.c) {
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if ((yAccum >> 8) < 0) {
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int32_t diffY = - yAccum - 1;
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int32_t y = mat.c ? diffY / mat.c : 0;
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xAccum += mat.a * y;
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yAccum += mat.c * y;
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outX += y;
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inX += y;
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} else if ((yAccum >> 8) >= height) {
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int32_t diffY = (height << 8) - yAccum;
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int32_t y = mat.c ? diffY / mat.c : 0;
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xAccum += mat.a * y;
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yAccum += mat.c * y;
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outX += y;
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inX += y;
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}
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}
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if (outX < start || outX >= condition) {
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return 0;
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}
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renderer->spriteCyclesRemaining -= 10;
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if (!GBAObjAttributesAIs256Color(sprite->a)) {
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palette = &palette[GBAObjAttributesCGetPalette(sprite->c) << 4];
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if (flags & FLAG_OBJWIN) {
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SPRITE_TRANSFORMED_LOOP(16, OBJWIN);
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} else if (mosaicH > 1) {
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if (objwinSlowPath) {
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objwinPalette = &objwinPalette[GBAObjAttributesCGetPalette(sprite->c) << 4];
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SPRITE_TRANSFORMED_MOSAIC_LOOP(16, NORMAL_OBJWIN);
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} else {
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SPRITE_TRANSFORMED_MOSAIC_LOOP(16, NORMAL);
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}
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} else if (objwinSlowPath) {
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objwinPalette = &objwinPalette[GBAObjAttributesCGetPalette(sprite->c) << 4];
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SPRITE_TRANSFORMED_LOOP(16, NORMAL_OBJWIN);
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} else {
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SPRITE_TRANSFORMED_LOOP(16, NORMAL);
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}
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} else {
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if (flags & FLAG_OBJWIN) {
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SPRITE_TRANSFORMED_LOOP(256, OBJWIN);
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} else if (mosaicH > 1) {
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if (objwinSlowPath) {
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SPRITE_TRANSFORMED_MOSAIC_LOOP(256, NORMAL_OBJWIN);
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} else {
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SPRITE_TRANSFORMED_MOSAIC_LOOP(256, NORMAL);
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}
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} else if (objwinSlowPath) {
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SPRITE_TRANSFORMED_LOOP(256, NORMAL_OBJWIN);
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} else {
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SPRITE_TRANSFORMED_LOOP(256, NORMAL);
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}
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}
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if (end == GBA_VIDEO_HORIZONTAL_PIXELS && x + totalWidth > GBA_VIDEO_HORIZONTAL_PIXELS) {
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renderer->spriteCyclesRemaining -= (x + totalWidth - GBA_VIDEO_HORIZONTAL_PIXELS) * 2;
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}
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} else {
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int outX = x >= start ? x : start;
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int condition = x + width;
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int mosaicH = 1;
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if (GBAObjAttributesAIsMosaic(sprite->a)) {
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mosaicH = GBAMosaicControlGetObjH(renderer->mosaic) + 1;
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if (condition % mosaicH) {
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condition += mosaicH - (condition % mosaicH);
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}
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}
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if ((int) GBAObjAttributesAGetY(sprite->a) + height - 256 >= 0) {
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inY += 256;
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}
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if (GBAObjAttributesBIsVFlip(sprite->b)) {
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inY = height - inY - 1;
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}
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if (end < condition) {
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condition = end;
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}
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int inX = outX - x;
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int xOffset = 1;
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if (GBAObjAttributesBIsHFlip(sprite->b)) {
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inX = width - inX - 1;
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xOffset = -1;
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}
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if (!GBAObjAttributesAIs256Color(sprite->a)) {
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palette = &palette[GBAObjAttributesCGetPalette(sprite->c) << 4];
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if (flags & FLAG_OBJWIN) {
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SPRITE_NORMAL_LOOP(16, OBJWIN);
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} else if (mosaicH > 1) {
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if (objwinSlowPath) {
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objwinPalette = &objwinPalette[GBAObjAttributesCGetPalette(sprite->c) << 4];
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SPRITE_MOSAIC_LOOP(16, NORMAL_OBJWIN);
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} else {
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SPRITE_MOSAIC_LOOP(16, NORMAL);
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}
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} else if (objwinSlowPath) {
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objwinPalette = &objwinPalette[GBAObjAttributesCGetPalette(sprite->c) << 4];
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SPRITE_NORMAL_LOOP(16, NORMAL_OBJWIN);
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} else {
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SPRITE_NORMAL_LOOP(16, NORMAL);
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}
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} else {
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if (flags & FLAG_OBJWIN) {
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SPRITE_NORMAL_LOOP(256, OBJWIN);
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} else if (mosaicH > 1) {
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if (objwinSlowPath) {
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SPRITE_MOSAIC_LOOP(256, NORMAL_OBJWIN);
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} else {
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SPRITE_MOSAIC_LOOP(256, NORMAL);
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}
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} else if (objwinSlowPath) {
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SPRITE_NORMAL_LOOP(256, NORMAL_OBJWIN);
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} else {
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SPRITE_NORMAL_LOOP(256, NORMAL);
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}
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}
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if (end == GBA_VIDEO_HORIZONTAL_PIXELS && x + width > GBA_VIDEO_HORIZONTAL_PIXELS) {
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renderer->spriteCyclesRemaining -= x + width - GBA_VIDEO_HORIZONTAL_PIXELS;
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}
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}
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return 1;
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}
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void GBAVideoSoftwareRendererPostprocessSprite(struct GBAVideoSoftwareRenderer* renderer, unsigned priority) {
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int x;
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uint32_t* pixel = &renderer->row[renderer->start];
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uint32_t flags = FLAG_TARGET_2 * renderer->target2Obj;
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int objwinSlowPath = GBARegisterDISPCNTIsObjwinEnable(renderer->dispcnt);
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bool objwinDisable = false;
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bool objwinOnly = false;
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if (objwinSlowPath) {
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objwinDisable = !GBAWindowControlIsObjEnable(renderer->objwin.packed);
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objwinOnly = !objwinDisable && !GBAWindowControlIsObjEnable(renderer->currentWindow.packed);
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if (objwinDisable && !GBAWindowControlIsObjEnable(renderer->currentWindow.packed)) {
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return;
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}
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if (objwinDisable) {
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for (x = renderer->start; x < renderer->end; ++x, ++pixel) {
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uint32_t color = renderer->spriteLayer[x] & ~FLAG_OBJWIN;
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uint32_t current = *pixel;
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if ((color & FLAG_UNWRITTEN) != FLAG_UNWRITTEN && !(current & FLAG_OBJWIN) && (color & FLAG_PRIORITY) >> OFFSET_PRIORITY == priority) {
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_compositeBlendObjwin(renderer, pixel, color | flags, current);
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}
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}
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return;
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} else if (objwinOnly) {
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for (x = renderer->start; x < renderer->end; ++x, ++pixel) {
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uint32_t color = renderer->spriteLayer[x] & ~FLAG_OBJWIN;
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uint32_t current = *pixel;
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if ((color & FLAG_UNWRITTEN) != FLAG_UNWRITTEN && (current & FLAG_OBJWIN) && (color & FLAG_PRIORITY) >> OFFSET_PRIORITY == priority) {
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_compositeBlendObjwin(renderer, pixel, color | flags, current);
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}
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}
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return;
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} else {
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for (x = renderer->start; x < renderer->end; ++x, ++pixel) {
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uint32_t color = renderer->spriteLayer[x] & ~FLAG_OBJWIN;
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uint32_t current = *pixel;
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if ((color & FLAG_UNWRITTEN) != FLAG_UNWRITTEN && (color & FLAG_PRIORITY) >> OFFSET_PRIORITY == priority) {
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_compositeBlendObjwin(renderer, pixel, color | flags, current);
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}
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}
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return;
|
|
}
|
|
} else if (!GBAWindowControlIsObjEnable(renderer->currentWindow.packed)) {
|
|
return;
|
|
}
|
|
for (x = renderer->start; x < renderer->end; ++x, ++pixel) {
|
|
uint32_t color = renderer->spriteLayer[x] & ~FLAG_OBJWIN;
|
|
uint32_t current = *pixel;
|
|
if ((color & FLAG_UNWRITTEN) != FLAG_UNWRITTEN && (color & FLAG_PRIORITY) >> OFFSET_PRIORITY == priority) {
|
|
_compositeBlendNoObjwin(renderer, pixel, color | flags, current);
|
|
}
|
|
}
|
|
}
|