GS/HW: Add CRC fixes for DT Carnage/Racer/Axel Impact

bin/resources/GameIndex.yaml

@@ -10365,9 +10365,14 @@ SCPS-56016:
   gameFixes:
     - GIFFIFOHack
   gsHWFixes:
+    halfPixelOffset: 2 # Fixes post processing position.
+    nativeScaling: 2 # Fixes post effects.
     estimateTextureRegion: 1 # Improves performance and reduces hash cache size.
     gpuPaletteConversion: 2 # Improves performance and reduces hash cache size.
     autoFlush: 1 # Corrects shadows (Currently still broken even with this).
+    recommendedBlendingLevel: 4 # Fixes car shadows but addeds about 5000 barriers, might impact slower machines.
+    gpuTargetCLUT: 2 # Fixes light flicker.
+    getSkipCount: "GSC_DTGames"
 SCPS-72001:
   name: "GRAN TURISMO3 A-spec [MEGA HITS!]"
   name-sort: "ぐらんつーりすも3 A-spec [MEGA HITS!]"
@@ -23969,9 +23974,13 @@ SLES-53904:
   clampModes:
     vuClampMode: 0 # Fixes black artifacts on tracks
   gsHWFixes:
+    halfPixelOffset: 2 # Fixes post processing position.
+    nativeScaling: 2 # Fixes post effects.
     estimateTextureRegion: 1 # Improves performance and reduces hash cache size.
     gpuPaletteConversion: 2 # Improves performance and reduces hash cache size.
     autoFlush: 1 # Corrects shadows (Currently still broken even with this).
+    gpuTargetCLUT: 2 # Fixes light flicker.
+    getSkipCount: "GSC_DTGames"
 SLES-53906:
   name: "50 Cent - Bulletproof"
   region: "PAL-F"
@@ -66754,9 +66763,13 @@ SLUS-21095:
   region: "NTSC-U"
   compat: 5
   gsHWFixes:
+    halfPixelOffset: 2 # Fixes post processing position.
+    nativeScaling: 2 # Fixes post effects.
     estimateTextureRegion: 1 # Improves performance and reduces hash cache size.
     gpuPaletteConversion: 2 # Improves performance and reduces hash cache size.
     autoFlush: 1 # Corrects shadows (Currently still broken even with this).
+    gpuTargetCLUT: 2 # Fixes light flicker.
+    getSkipCount: "GSC_DTGames"
 SLUS-21096:
   name: "Ape Escape - Pumped & Primed"
   region: "NTSC-U"
@@ -70873,10 +70886,12 @@ SLUS-21793:
   compat: 3
   gsHWFixes:
     halfPixelOffset: 2 # Fixes post processing position.
-    nativeScaling: 1 # Fixes post effects.
+    nativeScaling: 2 # Fixes post effects.
     estimateTextureRegion: 1 # Improves performance and reduces hash cache size.
     gpuPaletteConversion: 2 # Improves performance and reduces hash cache size.
     autoFlush: 1 # Corrects shadows (Currently still broken even with this).
+    gpuTargetCLUT: 2 # Fixes light flicker.
+    getSkipCount: "GSC_DTGames"
 SLUS-21794:
   name: "Go, Diego, Go! Great Dinosaur Rescue"
   region: "NTSC-U"

pcsx2/GS/Renderers/HW/GSHwHack.cpp

@@ -154,6 +154,62 @@ bool GSHwHack::GSC_SFEX3(GSRendererHW& r, int& skip)
 	return true;
 }
 
+bool GSHwHack::GSC_DTGames(GSRendererHW& r, int& skip)
+{
+	if (skip == 0)
+	{
+		// The game does a shuffle based on the result of a copy from the depth buffer, which ends up looking bizzare so PCSX2 doesn't know how to deal with it.
+		// What they're actually doing is copying the red/green channel of the result (kind of a shadow stencil) to the alpha channel.
+		// The further problem to this is the limitation of alpha we can save on an RT as they copy in 255, so I can cheese it here pretending it's RTA'd
+		if (RTME && RFPSM == PSMCT32 && RTBP0 == RFBP && RTPSM == PSMCT16 && RTEST.ATE && RTEST.ATST == ATST_NEVER && RTEST.AFAIL == AFAIL_FB_ONLY && RFBMSK == 0xFFFFFF)
+		{
+			GSTextureCache::Target* rt = g_texture_cache->LookupTarget(GIFRegTEX0::Create(RTBP0, RFBW, RFPSM),
+				GSVector2i(1, 1), r.GetTextureScaleFactor(), GSTextureCache::RenderTarget);
+
+			if (!rt)
+				return false;
+
+			// Clear down the alpha first.
+			GSHWDrawConfig& clear = r.BeginHLEHardwareDraw(
+				rt->GetTexture(), nullptr, rt->GetScale(), nullptr, rt->GetScale(), rt->GetUnscaledRect());
+			clear.colormask.wrgba = 0;
+			clear.colormask.wa = 1;
+			r.EndHLEHardwareDraw(false);
+
+			// Shuffle the green channel in to alpha.
+			GSHWDrawConfig& config = r.BeginHLEHardwareDraw(
+				rt->GetTexture(), nullptr, rt->GetScale(), rt->GetTexture(), rt->GetScale(), rt->GetUnscaledRect());
+			config.ps.shuffle = 1;
+			config.ps.dst_fmt = GSLocalMemory::PSM_FMT_32;
+			config.ps.write_rg = 0;
+			config.ps.shuffle_same = 0;
+			config.ps.real16src = 0;
+			config.ps.shuffle_across = 1;
+			config.ps.process_rg = r.SHUFFLE_READ;
+			config.ps.process_ba = r.SHUFFLE_WRITE;
+			config.colormask.wrgba = 0;
+			config.colormask.wa = 1;
+			config.ps.rta_correction = 1;
+			config.ps.fbmask = 1;
+			config.ps.fbmask = 0x7FFFFFFF;
+			config.ps.tfx = TFX_DECAL;
+			config.ps.tcc = true;
+			r.EndHLEHardwareDraw(true);
+
+			rt->m_alpha_min = 0;
+			rt->m_alpha_max = 255;
+			skip = 69;
+		}
+	}
+	else
+	{
+		if (RTPSM != PSMCT16)
+			skip = 0;
+	}
+
+	return true;
+}
+
 bool GSHwHack::GSC_Tekken5(GSRendererHW& r, int& skip)
 {
 	if (skip == 0)
@@ -1471,6 +1527,7 @@ const GSHwHack::Entry<GSRendererHW::GSC_Ptr> GSHwHack::s_get_skip_count_function
 	CRC_F(GSC_SakuraWarsSoLongMyLove),
 	CRC_F(GSC_Simple2000Vol114),
 	CRC_F(GSC_SFEX3),
+	CRC_F(GSC_DTGames),
 	CRC_F(GSC_TalesOfLegendia),
 	CRC_F(GSC_TalesofSymphonia),
 	CRC_F(GSC_UrbanReign),

pcsx2/GS/Renderers/HW/GSHwHack.h

@@ -11,6 +11,7 @@ class GSHwHack
 	static bool GSC_Manhunt2(GSRendererHW& r, int& skip);
 	static bool GSC_SacredBlaze(GSRendererHW& r, int& skip);
 	static bool GSC_SFEX3(GSRendererHW& r, int& skip);
+	static bool GSC_DTGames(GSRendererHW& r, int& skip);
 	static bool GSC_Tekken5(GSRendererHW& r, int& skip);
 	static bool GSC_BurnoutGames(GSRendererHW& r, int& skip);
 	static bool GSC_BlackAndBurnoutSky(GSRendererHW& r, int& skip);

pcsx2/GS/Renderers/HW/GSRendererHW.cpp

@@ -554,7 +554,7 @@ void GSRendererHW::ConvertSpriteTextureShuffle(u32& process_rg, u32& process_ba,
 		}
 		else
 		{
-			if ((floor(m_vt.m_max.p.y) <= rt->m_valid.w) && ((floor(m_vt.m_max.p.x) > (m_cached_ctx.FRAME.FBW * 64)) || (rt->m_TEX0.TBW != m_cached_ctx.FRAME.FBW)))
+			if (((m_r.width() + 8) & ~(GSLocalMemory::m_psm[m_cached_ctx.FRAME.PSM].pgs.x - 1)) != GSLocalMemory::m_psm[m_cached_ctx.FRAME.PSM].pgs.x && (floor(m_vt.m_max.p.y) <= rt->m_valid.w) && ((floor(m_vt.m_max.p.x) > (m_cached_ctx.FRAME.FBW * 64)) || (rt->m_TEX0.TBW < m_cached_ctx.FRAME.FBW)))
 			{
 				half_bottom_vert = false;
 				half_bottom_uv = false;