From ab3fc19230f24ab149c507513d0d1c13075cf0e6 Mon Sep 17 00:00:00 2001
From: bkaradzic <branimirkaradzic@gmail.com>
Date: Sun, 21 Jul 2013 19:59:42 -0700
Subject: [PATCH] GL: Added support for ARB_seamless_cube_map.

---
 README.md           |  1 -
 src/renderer_gl.cpp | 17 +++++++++++++----
 2 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/README.md b/README.md
index 96557701..7a5e29b0 100644
--- a/README.md
+++ b/README.md
@@ -266,7 +266,6 @@ Todo
  - Occlusion queries.
  - DX11: MSAA.
  - Fullscreen mode.
- - GL: Add support for ARB_seamless_cube_map.
  - GL/DX11: Add support for ARB_depth_clamp, DepthBiasClamp.
  - Primitive scissor.
 
diff --git a/src/renderer_gl.cpp b/src/renderer_gl.cpp
index fa83ee8c..94127d40 100644
--- a/src/renderer_gl.cpp
+++ b/src/renderer_gl.cpp
@@ -26,6 +26,7 @@ namespace bgfx
 			ARB_half_float_vertex,
 			ARB_instanced_arrays,
 			ARB_multisample,
+			ARB_seamless_cube_map,
 			ARB_texture_float,
 			ARB_texture_multisample,
 			ARB_texture_swizzle,
@@ -84,6 +85,7 @@ namespace bgfx
 		{ "GL_ARB_half_float_vertex",             false,                             true  },
 		{ "GL_ARB_instanced_arrays",              BGFX_CONFIG_RENDERER_OPENGL >= 33, true  },
 		{ "GL_ARB_multisample",                   false,                             true  },
+		{ "GL_ARB_seamless_cube_map",             BGFX_CONFIG_RENDERER_OPENGL >= 31, true  },
 		{ "GL_ARB_texture_float",                 BGFX_CONFIG_RENDERER_OPENGL >= 31, true  },
 		{ "GL_ARB_texture_multisample",           false,                             true  },
 		{ "GL_ARB_texture_swizzle",               BGFX_CONFIG_RENDERER_OPENGL >= 33, true  },
@@ -2313,6 +2315,7 @@ namespace bgfx
 			char name[1024];
 			const char* pos = extensions;
 			const char* end = extensions + strlen(extensions);
+			uint32_t index = 0;
 			while (pos < end)
 			{
 				uint32_t len;
@@ -2345,10 +2348,11 @@ namespace bgfx
 					}
 				}
 
-				BX_TRACE("GL_EXTENSION%s: %s", supported ? " (supported)" : "", name);
+				BX_TRACE("GL_EXTENSION %3d%s: %s", index, supported ? " (supported)" : "", name);
 				BX_UNUSED(supported);
 
  				pos += len+1;
+				++index;
  			}
 
 			BX_TRACE("Supported extensions:");
@@ -2454,17 +2458,22 @@ namespace bgfx
 			GL_CHECK(glGenVertexArrays(1, &s_renderCtx.m_vao) );
 		}
 
-#if BGFX_CONFIG_RENDERER_OPENGL >= 31
+#if BGFX_CONFIG_RENDERER_OPENGL
+#	if BGFX_CONFIG_RENDERER_OPENGL >= 31
 		s_textureFormat[TextureFormat::L8].m_internalFmt = GL_R8;
 		s_textureFormat[TextureFormat::L8].m_fmt         = GL_RED;
-#endif // BGFX_CONFIG_RENDERER_OPENGL >= 31
+#	endif // BGFX_CONFIG_RENDERER_OPENGL >= 31
 
-#if BGFX_CONFIG_RENDERER_OPENGL
 		if (s_extension[Extension::ARB_debug_output].m_supported)
 		{
 			GL_CHECK(glDebugMessageCallbackARB(debugProcCb, NULL) );
 			GL_CHECK(glDebugMessageControlARB(GL_DONT_CARE, GL_DONT_CARE, GL_DEBUG_SEVERITY_MEDIUM_ARB, 0, NULL, GL_TRUE) );
 		}
+
+		if (s_extension[Extension::ARB_seamless_cube_map].m_supported)
+		{
+			GL_CHECK(glEnable(GL_TEXTURE_CUBE_MAP_SEAMLESS) );
+		}
 #endif // BGFX_CONFIG_RENDERER_OPENGL
 	}