From 36833d1df2ccb238efc4e9b62274ac188f814edb Mon Sep 17 00:00:00 2001
From: vladislavbelov <vladislavbelov@wildfiregames.com>
Date: Fri, 18 Feb 2022 23:17:48 +0000
Subject: [PATCH] Moves max texture size to backend device capabilities.

This was SVN commit r26409.
---
 source/lib/ogl.cpp                    | 15 +--------------
 source/lib/ogl.h                      |  9 +--------
 source/renderer/ShadowMap.cpp         |  7 ++++---
 source/renderer/backend/gl/Device.cpp |  5 +++++
 source/renderer/backend/gl/Device.h   |  1 +
 5 files changed, 12 insertions(+), 25 deletions(-)

diff --git a/source/lib/ogl.cpp b/source/lib/ogl.cpp
index 7a8a5fa193..c36961befa 100644
--- a/source/lib/ogl.cpp
+++ b/source/lib/ogl.cpp
@@ -20,11 +20,8 @@
  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
-/*
- * OpenGL helper functions.
- */
-
 #include "precompiled.h"
+
 #include "lib/ogl.h"
 
 #include "lib/code_annotation.h"
@@ -416,9 +413,6 @@ bool ogl_SquelchError(GLenum err_to_ignore)
 // feature and limit detect
 //----------------------------------------------------------------------------
 
-GLint ogl_max_tex_size = -1;				// [pixels]
-GLint ogl_max_tex_units = -1;				// limit on GL_TEXTUREn
-
 #if OS_WIN
 bool ogl_Init(void* (load)(const char*), void* hdc)
 #elif !CONFIG2_GLES && !OS_MACOSX && !OS_MAC
@@ -484,13 +478,6 @@ bool ogl_Init(void* (load)(const char*))
 
 	enableDummyFunctions();
 
-	glGetIntegerv(GL_MAX_TEXTURE_SIZE, &ogl_max_tex_size);
-#if !CONFIG2_GLES
-	glGetIntegerv(GL_MAX_TEXTURE_UNITS, &ogl_max_tex_units);
-#endif
-
-	glEnable(GL_TEXTURE_2D);
-
 	return true;
 }
 
diff --git a/source/lib/ogl.h b/source/lib/ogl.h
index 2eba413ceb..b3cdc15665 100644
--- a/source/lib/ogl.h
+++ b/source/lib/ogl.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2021 Wildfire Games.
+/* Copyright (C) 2022 Wildfire Games.
  *
  * Permission is hereby granted, free of charge, to any person obtaining
  * a copy of this software and associated documentation files (the
@@ -143,11 +143,4 @@ extern const char* ogl_GetErrorName(GLenum err);
  **/
 extern bool ogl_SquelchError(GLenum err_to_ignore);
 
-
-//-----------------------------------------------------------------------------
-// implementation limits / feature detect
-
-extern GLint ogl_max_tex_size;				/// [pixels]
-extern GLint ogl_max_tex_units;				/// limit on GL_TEXTUREn
-
 #endif	// INCLUDED_OGL
diff --git a/source/renderer/ShadowMap.cpp b/source/renderer/ShadowMap.cpp
index f1d4fe7340..cf2fc0c308 100644
--- a/source/renderer/ShadowMap.cpp
+++ b/source/renderer/ShadowMap.cpp
@@ -473,6 +473,8 @@ void ShadowMapInternals::CreateTexture()
 	Texture.reset();
 	DummyTexture.reset();
 
+	Renderer::Backend::GL::CDevice* backendDevice = g_VideoMode.GetBackendDevice();
+
 	CFG_GET_VAL("shadowquality", QualityLevel);
 
 	// Get shadow map size as next power of two up from view width/height.
@@ -498,7 +500,8 @@ void ShadowMapInternals::CreateTexture()
 	}
 
 	// Clamp to the maximum texture size.
-	shadowMapSize = std::min(shadowMapSize, static_cast<int>(ogl_max_tex_size));
+	shadowMapSize = std::min(
+		shadowMapSize, static_cast<int>(backendDevice->GetCapabilities().maxTextureSize));
 
 	Width = Height = shadowMapSize;
 
@@ -525,8 +528,6 @@ void ShadowMapInternals::CreateTexture()
 	LOGMESSAGE("Creating shadow texture (size %dx%d) (format = %s)",
 		Width, Height, formatName);
 
-	Renderer::Backend::GL::CDevice* backendDevice = g_VideoMode.GetBackendDevice();
-
 	if (g_RenderingOptions.GetShadowAlphaFix())
 	{
 		DummyTexture = backendDevice->CreateTexture2D("ShadowMapDummy",
diff --git a/source/renderer/backend/gl/Device.cpp b/source/renderer/backend/gl/Device.cpp
index ae848ba6e3..a2bf81effb 100644
--- a/source/renderer/backend/gl/Device.cpp
+++ b/source/renderer/backend/gl/Device.cpp
@@ -287,6 +287,8 @@ std::unique_ptr<CDevice> CDevice::Create(SDL_Window* window, const bool arb)
 	glPixelStorei(GL_PACK_ALIGNMENT, 1);
 	glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
 
+	glEnable(GL_TEXTURE_2D);
+
 	device->m_Backbuffer = CFramebuffer::CreateBackbuffer(device.get());
 
 	Capabilities& capabilities = device->m_Capabilities;
@@ -324,6 +326,9 @@ std::unique_ptr<CDevice> CDevice::Create(SDL_Window* window, const bool arb)
 		glGetFloatv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &maxAnisotropy);
 		capabilities.maxAnisotropy = maxAnisotropy;
 	}
+	GLint maxTextureSize = 1024;
+	glGetIntegerv(GL_MAX_TEXTURE_SIZE, &maxTextureSize);
+	capabilities.maxTextureSize = maxTextureSize;
 
 #if CONFIG2_GLES
 	const bool isDebugInCore = ogl_HaveVersion(3, 2);
diff --git a/source/renderer/backend/gl/Device.h b/source/renderer/backend/gl/Device.h
index a91d1cfa35..c547f6a38e 100644
--- a/source/renderer/backend/gl/Device.h
+++ b/source/renderer/backend/gl/Device.h
@@ -56,6 +56,7 @@ public:
 		bool anisotropicFiltering;
 		uint32_t maxSampleCount;
 		float maxAnisotropy;
+		uint32_t maxTextureSize;
 	};
 
 	~CDevice();