Renderer/OpenGL: Enable GL_TEXTURE_CUBE_MAP_SEAMLESS

ChangeLog.md

@@ -92,6 +92,7 @@ Nazara Engine:
 - ⚠️ Translucent2D pipeline no longer has depth sorting
 - Fixed SimpleTextDrawer line bounds
 - ⚠️ Stream::ReadLine will now returns empty lines if present in the file
+- Fixed cubemaps seams with OpenGL
 
 Nazara Development Kit:
 - Added ImageWidget (#139)

include/Nazara/Renderer/OpenGL.hpp

@@ -38,6 +38,7 @@ namespace Nz
 		OpenGLExtension_FP64,
 		OpenGLExtension_GetProgramBinary,
 		OpenGLExtension_SeparateShaderObjects,
+		OpenGLExtension_SeamlessCubeMap,
 		OpenGLExtension_Shader_ImageLoadStore,
 		OpenGLExtension_TextureCompression_s3tc,
 		OpenGLExtension_TextureStorage,

src/Nazara/Renderer/Context.cpp

@@ -163,6 +163,9 @@ namespace Nz
 			return false;
 		}
 
+		if (OpenGL::IsSupported(OpenGLExtension_SeamlessCubeMap))
+			glEnable(GL_TEXTURE_CUBE_MAP_SEAMLESS);
+
 		if (m_parameters.antialiasingLevel > 0)
 			glEnable(GL_MULTISAMPLE);
 

src/Nazara/Renderer/OpenGL.cpp

@@ -1174,6 +1174,9 @@ namespace Nz
 			}
 		}
 
+		// Seamless Cubemap Filtering
+		s_openGLextensions[OpenGLExtension_SeamlessCubeMap] = (s_openglVersion >= 320 || IsSupported("GL_ARB_seamless_cube_map"));
+
 		// Shader_ImageLoadStore
 		s_openGLextensions[OpenGLExtension_Shader_ImageLoadStore] = (s_openglVersion >= 420 || IsSupported("GL_ARB_shader_image_load_store"));