rsx: Implement memory tags for strict mode to validate render target memory

rpcs3/Emu/RSX/Common/texture_cache.h

@@ -186,6 +186,21 @@ namespace rsx
 	private:
 		//Internal implementation methods and helpers
 
+		utils::protection get_memory_protection(u32 address)
+		{
+			auto found = m_cache.find(get_block_address(address));
+			if (found != m_cache.end())
+			{
+				for (const auto &tex : found->second.data)
+				{
+					if (tex.is_locked() && tex.overlaps(address, false))
+						return tex.get_protection();
+				}
+			}
+
+			return utils::protection::rw;
+		}
+
 		//Get intersecting set - Returns all objects intersecting a given range and their owning blocks
 		std::vector<std::pair<section_storage_type*, ranged_storage*>> get_intersecting_set(u32 address, u32 range, bool check_whole_size)
 		{
@@ -722,6 +737,8 @@ namespace rsx
 				//Check for sampleable rtts from previous render passes
 				//TODO: When framebuffer Y compression is properly handled, this section can be removed. A more accurate framebuffer storage check exists below this block
 				if (auto texptr = m_rtts.get_texture_from_render_target_if_applicable(texaddr))
+				{
+					if (test_framebuffer(texaddr))
 					{
 						if (extended_dimension != rsx::texture_dimension_extended::texture_dimension_2d)
 							LOG_ERROR(RSX, "Texture resides in render target memory, but requested type is not 2D (%d)", (u32)extended_dimension);
@@ -746,8 +763,11 @@ namespace rsx
 
 						return texptr->get_view();
 					}
+				}
 
 				if (auto texptr = m_rtts.get_texture_from_depth_stencil_if_applicable(texaddr))
+				{
+					if (test_framebuffer(texaddr))
 					{
 						if (extended_dimension != rsx::texture_dimension_extended::texture_dimension_2d)
 							LOG_ERROR(RSX, "Texture resides in depth buffer memory, but requested type is not 2D (%d)", (u32)extended_dimension);
@@ -769,6 +789,7 @@ namespace rsx
 						return texptr->get_view();
 					}
 				}
+			}
 
 			u16 depth = 0;
 			u16 tex_height = (u16)tex.height();
@@ -810,7 +831,7 @@ namespace rsx
 				const u32 internal_width = (const u32)(tex_width * internal_scale);
 
 				const auto rsc = m_rtts.get_surface_subresource_if_applicable(texaddr, internal_width, tex_height, tex_pitch, true);
-				if (rsc.surface)
+				if (rsc.surface && test_framebuffer(texaddr))
 				{
 					//TODO: Check that this region is not cpu-dirty before doing a copy
 					if (extended_dimension != rsx::texture_dimension_extended::texture_dimension_2d)
@@ -1248,5 +1269,36 @@ namespace rsx
 		{
 			return m_texture_memory_in_use;
 		}
+
+		void tag_framebuffer(u32 texaddr)
+		{
+			if (!g_cfg.video.strict_rendering_mode)
+				return;
+
+			switch (get_memory_protection(texaddr))
+			{
+			case utils::protection::no:
+				return;
+			case utils::protection::ro:
+				LOG_ERROR(RSX, "Framebuffer memory occupied by regular texture!");
+				return;
+			}
+
+			vm::ps3::write32(texaddr, texaddr);
+		}
+
+		bool test_framebuffer(u32 texaddr)
+		{
+			if (!g_cfg.video.strict_rendering_mode)
+				return true;
+
+			if (g_cfg.video.write_color_buffers || g_cfg.video.write_depth_buffer)
+			{
+				if (get_memory_protection(texaddr) == utils::protection::no)
+					return true;
+			}
+
+			return vm::ps3::read32(texaddr) == texaddr;
+		}
 	};
 }

rpcs3/Emu/RSX/GL/GLGSRender.cpp

@@ -947,15 +947,17 @@ bool GLGSRender::check_program_state()
 		if (!is_depth)
 			surface = m_rtts.get_texture_from_render_target_if_applicable(texaddr);
 		else
-		{
 			surface = m_rtts.get_texture_from_depth_stencil_if_applicable(texaddr);
 
-			if (!surface && m_gl_texture_cache.is_depth_texture(texaddr, (u32)get_texture_size(tex)))
+		const bool dirty_framebuffer = (surface != nullptr && !m_gl_texture_cache.test_framebuffer(texaddr));
-				return std::make_tuple(true, 0);
+		if (dirty_framebuffer || !surface)
-		}
-
-		if (!surface)
 		{
+			if (is_depth && m_gl_texture_cache.is_depth_texture(texaddr, (u32)get_texture_size(tex)))
+				return std::make_tuple(true, 0);
+
+			if (dirty_framebuffer)
+				return std::make_tuple(false, 0);
+
 			auto rsc = m_rtts.get_surface_subresource_if_applicable(texaddr, 0, 0, tex.pitch());
 			if (!rsc.surface || rsc.is_depth_surface != is_depth)
 				return std::make_tuple(false, 0);

rpcs3/Emu/RSX/GL/GLRenderTargets.cpp

@@ -236,6 +236,8 @@ void GLGSRender::init_buffers(bool skip_reading)
 					surface_info[i].pitch = 0;
 				}
 			}
+
+			m_gl_texture_cache.tag_framebuffer(surface_addresses[i]);
 		}
 		else
 			surface_info[i] = {};
@@ -266,6 +268,8 @@ void GLGSRender::init_buffers(bool skip_reading)
 				depth_surface_info.pitch = 0;
 			}
 		}
+
+		m_gl_texture_cache.tag_framebuffer(depth_address);
 	}
 	else
 		depth_surface_info = {};

rpcs3/Emu/RSX/VK/VKGSRender.cpp

@@ -1819,14 +1819,23 @@ bool VKGSRender::check_program_status()
 		if (!is_depth)
 			surface = m_rtts.get_texture_from_render_target_if_applicable(texaddr);
 		else
-		{
 			surface = m_rtts.get_texture_from_depth_stencil_if_applicable(texaddr);
 
-			if (!surface && m_texture_cache.is_depth_texture(texaddr, (u32)get_texture_size(tex)))
+		const bool dirty_framebuffer = (surface != nullptr && !m_texture_cache.test_framebuffer(texaddr));
+		if (dirty_framebuffer || !surface)
+		{
+			if (is_depth && m_texture_cache.is_depth_texture(texaddr, (u32)get_texture_size(tex)))
 				return std::make_tuple(true, 0);
-		}
 
-		if (!surface) return std::make_tuple(false, 0);
+			if (dirty_framebuffer)
+				return std::make_tuple(false, 0);
+
+			auto rsc = m_rtts.get_surface_subresource_if_applicable(texaddr, 0, 0, tex.pitch());
+			if (!rsc.surface || rsc.is_depth_surface != is_depth)
+				return std::make_tuple(false, 0);
+
+			surface = rsc.surface;
+		}
 
 		return std::make_tuple(true, surface->native_pitch);
 	};
@@ -2284,6 +2293,8 @@ void VKGSRender::prepare_rtts()
 				//Ignore this buffer (usually set to 64)
 				m_surface_info[index].pitch = 0;
 		}
+
+		m_texture_cache.tag_framebuffer(surface_addresses[index]);
 	}
 
 	if (std::get<0>(m_rtts.m_bound_depth_stencil) != 0)
@@ -2297,6 +2308,8 @@ void VKGSRender::prepare_rtts()
 
 		if (m_depth_surface_info.pitch <= 64 && clip_width > m_depth_surface_info.pitch)
 			m_depth_surface_info.pitch = 0;
+
+		m_texture_cache.tag_framebuffer(zeta_address);
 	}
 
 	m_draw_buffers_count = static_cast<u32>(draw_buffers.size());

rpcs3/Emu/RSX/rsx_cache.h

@@ -239,7 +239,7 @@ namespace rsx
 			return std::make_pair(min, max);
 		}
 
-		utils::protection get_protection()
+		utils::protection get_protection() const
 		{
 			return protection;
 		}