From 528ea470d3b856bda56fa79c37d3868f5cd950c9 Mon Sep 17 00:00:00 2001
From: hzqst <113660872@qq.com>
Date: Sun, 14 Jan 2024 14:11:57 +0800
Subject: [PATCH] Fix corrupted transparent objects.

---
 Plugins/Renderer/gl_hooks.cpp  |  4 ++--
 Plugins/Renderer/gl_rmain.cpp  |  4 ++--
 Plugins/Renderer/gl_studio.cpp | 31 ++++++++++++++++---------------
 Plugins/Renderer/gl_studio.h   |  1 +
 4 files changed, 21 insertions(+), 19 deletions(-)

diff --git a/Plugins/Renderer/gl_hooks.cpp b/Plugins/Renderer/gl_hooks.cpp
index b58bbbe4..c2da2736 100644
--- a/Plugins/Renderer/gl_hooks.cpp
+++ b/Plugins/Renderer/gl_hooks.cpp
@@ -7490,7 +7490,7 @@ void R_UninstallHooksForEngineDLL(void)
 	Uninstall_Hook(triapi_RenderMode);
 	Uninstall_Hook(Draw_MiptexTexture);
 	Uninstall_Hook(BuildGammaTable);
-	Uninstall_Hook(R_CullBox);
+	//Uninstall_Hook(R_CullBox);
 
 	if (gPrivateFuncs.SDL_GL_SetAttribute)
 	{
@@ -7538,7 +7538,7 @@ void R_InstallHooks(void)
 	Install_InlineHook(triapi_RenderMode);
 	Install_InlineHook(Draw_MiptexTexture);
 	Install_InlineHook(BuildGammaTable);
-	Install_InlineHook(R_CullBox);
+	//Install_InlineHook(R_CullBox);
 
 	//OpenGL4.2 was forced by HL25 engine which might ruin the renderer features.
 	/*
diff --git a/Plugins/Renderer/gl_rmain.cpp b/Plugins/Renderer/gl_rmain.cpp
index 3636837d..3285bd0c 100644
--- a/Plugins/Renderer/gl_rmain.cpp
+++ b/Plugins/Renderer/gl_rmain.cpp
@@ -480,8 +480,7 @@ void R_DrawParticles(void)
 	glEnable(GL_ALPHA_TEST);
 	glEnable(GL_BLEND);
 	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-
-	//glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
+	glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
 
 	program_state_t LegacySpriteProgramState = 0;
 
@@ -2072,6 +2071,7 @@ void R_RenderView_SvEngine(int viewIdx)
 		//This will switch to final framebuffer (RGBA8)
 		//TODO: Why not using GL_BlitFrameBufferToFrameBufferColorOnly?		
 		R_BlendFinalBuffer(&s_BackBufferFBO, &s_FinalBufferFBO);
+		GL_SetCurrentSceneFBO(NULL);
 
 		if (!(*r_refdef.onlyClientDraws))
 			R_PolyBlend();
diff --git a/Plugins/Renderer/gl_studio.cpp b/Plugins/Renderer/gl_studio.cpp
index de1b3c79..6a4c50db 100644
--- a/Plugins/Renderer/gl_studio.cpp
+++ b/Plugins/Renderer/gl_studio.cpp
@@ -644,6 +644,9 @@ void R_UseStudioProgram(program_state_t state, studio_program_t* progOutput)
 		if (state & STUDIO_REVERT_NORMAL_ENABLED)
 			defs << "#define REVERT_NORMAL_ENABLED\n";
 
+		if (state & STUDIO_STENCIL_TEXTURE_ENABLED)
+			defs << "#define STENCIL_TEXTURE_ENABLED\n";
+
 		if (glewIsSupported("GL_NV_bindless_texture"))
 			defs << "#define NV_BINDLESS_ENABLED\n";
 
@@ -1076,7 +1079,8 @@ const program_state_mapping_t s_StudioProgramStateName[] = {
 { STUDIO_PACKED_PARALLAXTEXTURE_ENABLED	,"STUDIO_PACKED_PARALLAXTEXTURE_ENABLED"	},
 { STUDIO_PACKED_SPECULARTEXTURE_ENABLED	,"STUDIO_PACKED_SPECULARTEXTURE_ENABLED"	},
 { STUDIO_ANIMATED_TEXTURE_ENABLED		,"STUDIO_ANIMATED_TEXTURE_ENABLED"			},
-{ STUDIO_REVERT_NORMAL_ENABLED			,"STUDIO_REVERT_NORMAL_ENABLED"			},
+{ STUDIO_REVERT_NORMAL_ENABLED			,"STUDIO_REVERT_NORMAL_ENABLED"				},
+{ STUDIO_STENCIL_TEXTURE_ENABLED		,"STUDIO_STENCIL_TEXTURE_ENABLED"			},
 
 { STUDIO_NF_FLATSHADE					,"STUDIO_NF_FLATSHADE"		},
 { STUDIO_NF_CHROME						,"STUDIO_NF_CHROME"			},
@@ -2040,9 +2044,11 @@ void R_StudioDrawVBOMesh_DrawPass(
 			//Texture unit 6 = Stencil texture
 			if (s_BackBufferFBO2.s_hBackBufferStencilView)
 			{
-				glActiveTexture(GL_TEXTURE6);
+				glActiveTexture(GL_TEXTURE0 + STUDIO_RESERVED_TEXTURE_STENCIL);
 				glBindTexture(GL_TEXTURE_2D, s_BackBufferFBO2.s_hBackBufferStencilView);
 				glActiveTexture(GL_TEXTURE0);
+
+				StudioProgramState |= STUDIO_STENCIL_TEXTURE_ENABLED;
 			}
 		}
 	}
@@ -2307,29 +2313,24 @@ void R_StudioDrawVBOMesh_DrawPass(
 		glBindTexture(GL_TEXTURE_2D_ARRAY, 0);
 	}
 
+	if (StudioProgramState & STUDIO_STENCIL_TEXTURE_ENABLED)
+	{
+		//Texture unit 6 = Stencil texture
+		glActiveTexture(GL_TEXTURE0 + STUDIO_RESERVED_TEXTURE_STENCIL);
+		glBindTexture(GL_TEXTURE_2D, 0);
+	}
+
 	glActiveTexture((*oldtarget));
 
 	//Restore states
 	glDepthMask(GL_TRUE);
 	glDisable(GL_BLEND);
-
 	glEnable(GL_CULL_FACE);
 
 	if (r_draw_opaque)
 	{
 		GL_EndStencil();
 	}
-
-	if (StudioProgramState & STUDIO_NF_CELSHADE_FACE)
-	{
-		//Texture unit 6 = Stencil texture
-		if (s_GBufferFBO.s_hBackBufferStencilView)
-		{
-			glActiveTexture(GL_TEXTURE0 + STUDIO_RESERVED_TEXTURE_STENCIL);
-			glBindTexture(GL_TEXTURE_2D, 0);
-			glActiveTexture(GL_TEXTURE0);
-		}
-	}
 }
 
 void R_StudioDrawVBOMesh(
@@ -2740,7 +2741,7 @@ __forceinline void StudioRenderModel_Template(CallType pfnRenderModel, CallType
 		if (r_draw_gbuffer)
 			GL_BindFrameBuffer(&s_GBufferFBO);
 		else
-			GL_BindFrameBuffer(&s_BackBufferFBO);
+			GL_BindFrameBuffer(GL_GetCurrentSceneFBO());
 	}
 
 	if ((*currententity)->curstate.renderfx == kRenderFxGlowShell)
diff --git a/Plugins/Renderer/gl_studio.h b/Plugins/Renderer/gl_studio.h
index ba28256d..89bfa3ba 100644
--- a/Plugins/Renderer/gl_studio.h
+++ b/Plugins/Renderer/gl_studio.h
@@ -442,5 +442,6 @@ extern r_studio_interface_t **gpStudioInterface;
 #define STUDIO_PACKED_SPECULARTEXTURE_ENABLED	0x20000000000ull
 #define STUDIO_ANIMATED_TEXTURE_ENABLED			0x40000000000ull
 #define STUDIO_REVERT_NORMAL_ENABLED			0x80000000000ull
+#define STUDIO_STENCIL_TEXTURE_ENABLED			0x100000000000ull
 
 #define STUDIO_PACKED_TEXTURE_ALLBITS	(STUDIO_PACKED_DIFFUSETEXTURE_ENABLED | STUDIO_PACKED_NORMALTEXTURE_ENABLED | STUDIO_PACKED_PARALLAXTEXTURE_ENABLED | STUDIO_PACKED_SPECULARTEXTURE_ENABLED)