Add support for EXT_framebuffer_object for Atlas

diff --git a/simgear/screen/extensions.hxx b/simgear/screen/extensions.hxx
index d7999bc62cc0d1d0627dd47e8811b467e2405071..e1871068faa0cb1aa736d9ff7d9a542a874f3f8d 100644 (file)
--- a/simgear/screen/extensions.hxx
+++ b/simgear/screen/extensions.hxx
@@ -202,7 +202,7 @@ typedef void (APIENTRY * glClientActiveTextureProc)(GLenum texture);
 #define GL_RGB_SCALE_ARB                                       0x8573
 #define GL_ADD_SIGNED_ARB                                      0x8574
 #define GL_INTERPOLATE_ARB                                     0x8575
-#define GL_SUBTRACT_ARB                       0x84E7
+#define GL_SUBTRACT_ARB                                                0x84E7
 #define GL_CONSTANT_ARB                                                0x8576
 #define GL_PRIMARY_COLOR_ARB                                   0x8577
 #define GL_PREVIOUS_ARB                                                0x8578
@@ -766,6 +766,62 @@ typedef void (APIENTRY * glGetVertexAttribivProc) (GLuint index, GLenum pname, G
 typedef void (APIENTRY * glGetVertexAttribPointervProc) (GLuint index, GLenum pname, GLvoid* *pointer);
 typedef GLboolean (APIENTRY * glIsProgramProc) (GLuint program);
 
+/*
+ * EXT_framebuffer_objects
+ */
+#ifndef GL_EXT_framebuffer_object
+#define GL_EXT_framebuffer_object 1
+#define GL_NONE_EXT                                            0
+#define GL_FRAMEBUFFER_EXT                                     0x8D40
+#define GL_RENDERBUFFER_EXT                                    0x8D41
+#define GL_RGBA4_EXT                                           0x8056
+#define GL_RGB5_A1_EXT                                         0x8057
+#define GL_RGB565_EXT                                          0x8D62
+#define GL_DEPTH_COMPONENT16_EXT                               0x81A5
+#define GL_RENDERBUFFER_WIDTH_EXT                              0x8D42
+#define GL_RENDERBUFFER_HEIGHT_EXT                             0x8D43
+#define GL_RENDERBUFFER_INTERNAL_FORMAT_EXT                    0x8D44
+#define GL_RENDERBUFFER_RED_SIZE_EXT                           0x8D50
+#define GL_RENDERBUFFER_GREEN_SIZE_EXT                         0x8D51
+#define GL_RENDERBUFFER_BLUE_SIZE_EXT                          0x8D52
+#define GL_RENDERBUFFER_ALPHA_SIZE_EXT                         0x8D53
+#define GL_RENDERBUFFER_DEPTH_SIZE_EXT                         0x8D54
+#define GL_RENDERBUFFER_STENCIL_SIZE_EXT                       0x8D55
+#define GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT              0x8CD0
+#define GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT              0x8CD1
+#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT            0x8CD2
+#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT    0x8CD3
+#define GL_COLOR_ATTACHMENT0_EXT                               0x8CE0
+#define GL_DEPTH_ATTACHMENT_EXT                                        0x8D00
+#define GL_STENCIL_ATTACHMENT_EXT                              0x8D20
+#define GL_FRAMEBUFFER_COMPLETE_EXT                            0x8CD5
+#define GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT               0x8CD6
+#define GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT       0x8CD7
+#define GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT               0x8CD9
+#define GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT                  0x8CDA
+#define GL_FRAMEBUFFER_UNSUPPORTED_EXT                         0x8CDD
+#define GL_FRAMEBUFFER_BINDING_EXT                             0x8CA6
+#define GL_RENDERBUFFER_BINDING_EXT                            0x8CA7
+#define GL_MAX_RENDERBUFFER_SIZE_EXT                           0x84E8
+#define GL_INVALID_FRAMEBUFFER_OPERATION_EXT                   0x0506
+#endif
+
+typedef GLboolean (APIENTRY * glIsRenderbufferProc) (GLuint renderbuffer);
+typedef void (APIENTRY * glBindRenderbufferProc) (GLenum target, GLuint renderbuffer);
+typedef void (APIENTRY * glDeleteRenderbuffersProc) (GLsizei n, const GLuint* renderbuffers);
+typedef void (APIENTRY * glGenRenderbuffersProc) (GLsizei n, GLuint* renderbuffers);
+typedef void (APIENTRY * glRenderbufferStorageProc) (GLenum target, GLenum internalformat, GLsizei width, GLsizei height);
+typedef void (APIENTRY * glGetRenderbufferParameterivProc) (GLenum target, GLenum pname, GLint* params);
+typedef GLboolean (APIENTRY * glIsFramebufferProc) (GLuint framebuffer);
+typedef void (APIENTRY * glBindFramebufferProc) (GLenum target, GLuint framebuffer);
+typedef void (APIENTRY * glDeleteFramebuffersProc) (GLsizei n, const GLuint* framebuffers);
+typedef void (APIENTRY * glGenFramebuffersProc) (GLsizei n, GLuint* framebuffers);
+typedef GLenum (APIENTRY * glCheckFramebufferStatusProc) (GLenum target);
+typedef void (APIENTRY * glFramebufferRenderbufferProc) (GLenum target, GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer);
+typedef void (APIENTRY * glFramebufferTexture2DProc) (GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level);
+typedef void (APIENTRY * glGetFramebufferAttachmentParameterivProc) (GLenum target, GLenum attachment, GLenum pname, GLint* params);
+typedef void (APIENTRY * glGenerateMipmapProc) (GLenum target);
+
 /*
  * ARB_shader_objects
  */