Extend FBO support.

Use FBO only if it supported.
Use better FBO functions if possible.

1 files changed, 52 insertions, 0 deletions

diff --git a/src/mgl.h b/src/mgl.h
new file mode 100644
index 000000000..3721c6a9f
--- /dev/null
+++ b/src/mgl.h
@@ -0,0 +1,52 @@
+/*
+ *  The ManaPlus Client
+ *  Copyright (C) 2012  The ManaPlus Developers
+ *
+ *  This file is part of The ManaPlus Client.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef MGL_H
+#define MGL_H
+
+#define GL_GLEXT_PROTOTYPES 1
+
+#include <SDL_opengl.h>
+#include <GL/glext.h>
+
+#define defNameE(name) extern name##_t m##name
+
+typedef void (APIENTRY *glGenRenderbuffers_t)(GLsizei, GLuint *);
+typedef void (APIENTRY *glBindRenderbuffer_t)(GLenum target,
+    GLuint renderbuffer);
+typedef void (APIENTRY *glRenderbufferStorage_t)(GLenum target,
+    GLenum internalformat, GLsizei width, GLsizei height);
+typedef void (APIENTRY *glGenFramebuffers_t)(GLsizei n, GLuint *framebuffers);
+typedef void (APIENTRY *glBindFramebuffer_t)(GLenum target,
+    GLuint framebuffer);
+typedef void (APIENTRY *glFramebufferTexture2D_t)(GLenum target,
+    GLenum attachment, GLenum textarget, GLuint texture, GLint level);
+typedef void (APIENTRY *glFramebufferRenderbuffer_t)(GLenum target,
+    GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer);
+
+defNameE(glGenRenderbuffers);
+defNameE(glBindRenderbuffer);
+defNameE(glRenderbufferStorage);
+defNameE(glGenFramebuffers);
+defNameE(glBindFramebuffer);
+defNameE(glFramebufferTexture2D);
+defNameE(glFramebufferRenderbuffer);
+
+#endif