GS/HW: Allow translating targets for depth sources

Fixes broken half screen in Miami Vice and 10 Pin - Champions Alley.

bin/resources/shaders/dx11/tfx.fx

@@ -437,8 +437,12 @@ int2 clamp_wrap_uv_depth(int2 uv)
 float4 sample_depth(float2 st, float2 pos)
 {
 	float2 uv_f = (float2)clamp_wrap_uv_depth(int2(st)) * (float2)ScaledScaleFactor;
-	int2 uv = (int2)uv_f;
 
+#if PS_REGION_RECT == 1
+	uv_f = clamp(uv_f + STRange.xy, STRange.xy, STRange.zw);
+#endif
+
+	int2 uv = (int2)uv_f;
 	float4 t = (float4)(0.0f);
 
 	if (PS_TALES_OF_ABYSS_HLE == 1)

bin/resources/shaders/opengl/tfx_fs.glsl

@@ -376,9 +376,14 @@ ivec2 clamp_wrap_uv_depth(ivec2 uv)
 vec4 sample_depth(vec2 st)
 {
     vec2 uv_f = vec2(clamp_wrap_uv_depth(ivec2(st))) * vec2(ScaledScaleFactor);
-    ivec2 uv = ivec2(uv_f);
 
+    #if PS_REGION_RECT == 1
+        uv_f = clamp(uv_f + STRange.xy, STRange.xy, STRange.zw);
+    #endif
+
+    ivec2 uv = ivec2(uv_f);
     vec4 t = vec4(0.0f);
+
 #if PS_TALES_OF_ABYSS_HLE == 1
     // Warning: UV can't be used in channel effect
     int depth = fetch_raw_depth();

bin/resources/shaders/vulkan/tfx.glsl

@@ -684,8 +684,12 @@ ivec2 clamp_wrap_uv_depth(ivec2 uv)
 vec4 sample_depth(vec2 st, ivec2 pos)
 {
 	vec2 uv_f = vec2(clamp_wrap_uv_depth(ivec2(st))) * vec2(ScaledScaleFactor);
-	ivec2 uv = ivec2(uv_f);
 
+	#if PS_REGION_RECT == 1
+		uv_f = clamp(uv_f + STRange.xy, STRange.xy, STRange.zw);
+	#endif
+
+	ivec2 uv = ivec2(uv_f);
 	vec4 t = vec4(0.0f);
 
 	#if (PS_TALES_OF_ABYSS_HLE == 1)

pcsx2/GS/Renderers/HW/GSTextureCache.cpp

@@ -559,22 +559,70 @@ GSTextureCache::Source* GSTextureCache::LookupDepthSource(const GIFRegTEX0& TEX0
 	// Check only current frame, I guess it is only used as a postprocessing effect
 	const u32 bp = TEX0.TBP0;
 	const u32 psm = TEX0.PSM;
+	bool inside_target = false;
+	GSVector4i target_rc;
 
 	for (auto t : m_dst[DepthStencil])
 	{
-		if (t->m_used && t->m_dirty.empty() && GSUtil::HasSharedBits(bp, psm, t->m_TEX0.TBP0, t->m_TEX0.PSM))
+		if (!t->m_used || !t->m_dirty.empty())
+			continue;
+		
+		if (GSUtil::HasSharedBits(bp, psm, t->m_TEX0.TBP0, t->m_TEX0.PSM))
 		{
 			ASSERT(GSLocalMemory::m_psm[t->m_TEX0.PSM].depth);
 			if (t->m_age == 0)
 			{
 				// Perfect Match
 				dst = t;
+				inside_target = false;
 				break;
 			}
 			else if (t->m_age == 1)
 			{
 				// Better than nothing (Full Spectrum Warrior)
 				dst = t;
+				inside_target = false;
+			}
+		}
+		else if (!dst && bp >= t->m_TEX0.TBP0 && bp < t->m_end_block)
+		{
+			const GSVector2i page_size = GSLocalMemory::m_psm[t->m_TEX0.PSM].pgs;
+			const bool can_translate = CanTranslate(bp, TEX0.TBW, psm, r, t->m_TEX0.TBP0, t->m_TEX0.PSM, t->m_TEX0.TBW);
+			const bool swizzle_match = GSLocalMemory::m_psm[psm].depth == GSLocalMemory::m_psm[t->m_TEX0.PSM].depth;
+
+			if (can_translate)
+			{
+				if (swizzle_match)
+				{
+					target_rc = TranslateAlignedRectByPage(t, bp, psm, TEX0.TBW, r);
+				}
+				else
+				{
+					// If it's not page aligned, grab the whole pages it covers, to be safe.
+					if (GSLocalMemory::m_psm[psm].bpp != GSLocalMemory::m_psm[t->m_TEX0.PSM].bpp)
+					{
+						const GSVector2i dst_page_size = GSLocalMemory::m_psm[psm].pgs;
+						target_rc = GSVector4i(target_rc.x / page_size.x, target_rc.y / page_size.y,
+							(target_rc.z + (page_size.x - 1)) / page_size.x,
+							(target_rc.w + (page_size.y - 1)) / page_size.y);
+						target_rc = GSVector4i(target_rc.x * dst_page_size.x, target_rc.y * dst_page_size.y,
+							target_rc.z * dst_page_size.x, target_rc.w * dst_page_size.y);
+					}
+					else
+					{
+						target_rc.x &= ~(page_size.x - 1);
+						target_rc.y &= ~(page_size.y - 1);
+						target_rc.z = (r.z + (page_size.x - 1)) & ~(page_size.x - 1);
+						target_rc.w = (r.w + (page_size.y - 1)) & ~(page_size.y - 1);
+					}
+					target_rc = TranslateAlignedRectByPage(t, bp & ~((1 << 5) - 1), psm, TEX0.TBW, target_rc);
+				}
+
+				if (!target_rc.rempty())
+				{
+					dst = t;
+					inside_target = true;
+				}
 			}
 		}
 	}
@@ -589,6 +637,7 @@ GSTextureCache::Source* GSTextureCache::LookupDepthSource(const GIFRegTEX0& TEX0
 			{
 				ASSERT(GSLocalMemory::m_psm[t->m_TEX0.PSM].depth);
 				dst = t;
+				inside_target = false;
 				break;
 			}
 		}
@@ -612,6 +661,13 @@ GSTextureCache::Source* GSTextureCache::LookupDepthSource(const GIFRegTEX0& TEX0
 		src->m_valid_rect = dst->m_valid;
 		src->m_end_block = dst->m_end_block;
 
+		if (inside_target)
+		{
+			// Need to set it up as a region target.
+			src->m_region.SetX(target_rc.x, target_rc.z);
+			src->m_region.SetY(target_rc.y, target_rc.w);
+		}
+
 		if (GSRendererHW::GetInstance()->IsTBPFrameOrZ(dst->m_TEX0.TBP0))
 		{
 			m_temporary_source = src;

pcsx2/GS/Renderers/Metal/tfx.metal

@@ -563,9 +563,13 @@ struct PSMain
 	float4 sample_depth(float2 st)
 	{
 		float2 uv_f = float2(clamp_wrap_uv_depth(ushort2(st))) * float2(cb.scale_factor.x);
-		ushort2 uv = ushort2(uv_f);
 
+		if (PS_REGION_RECT)
+			uv_f = clamp(uv_f + cb.st_range.xy, cb.st_range.xy, cb.st_range.zw);
+
+		ushort2 uv = ushort2(uv_f);
 		float4 t = float4(0);
+
 		if (PS_TALES_OF_ABYSS_HLE)
 		{
 			// Warning: UV can't be used in channel effect