#define GL_LINE 0x1B01
#define GL_FILL 0x1B02
-extern int gl_support_anisotropy;
-extern int gl_max_anisotropy;
-#define GL_TEXTURE_MAX_ANISOTROPY_EXT 0x84FE
-#define GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT 0x84FF
-
#define GL_ADD 0x0104
#define GL_DECAL 0x2101
#define GL_MODULATE 0x2100
#endif
+//GL_EXT_texture_filter_anisotropic
+extern int gl_support_anisotropy;
+extern int gl_max_anisotropy;
+#ifndef GL_TEXTURE_MAX_ANISOTROPY_EXT
+#define GL_TEXTURE_MAX_ANISOTROPY_EXT 0x84FE
+#define GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT 0x84FF
+#endif
+
// GL_ARB_depth_texture
-#ifndef GL_DEPTH_COMPOENNT32_ARB
+#ifndef GL_DEPTH_COMPONENT32_ARB
#define GL_DEPTH_COMPONENT16_ARB 0x81A5
#define GL_DEPTH_COMPONENT24_ARB 0x81A6
#define GL_DEPTH_COMPONENT32_ARB 0x81A7
#endif
// GL_ARB_shadow
+extern int gl_support_arb_shadow;
#ifndef GL_TEXTURE_COMPARE_MODE_ARB
#define GL_TEXTURE_COMPARE_MODE_ARB 0x884C
#define GL_TEXTURE_COMPARE_FUNC_ARB 0x884D
#ifndef GL_FUNC_SUBTRACT_EXT
#define GL_FUNC_SUBTRACT_EXT 0x800A
#define GL_FUNC_REVERSE_SUBTRACT_EXT 0x800B
+extern void (GLAPIENTRY *qglBlendEquationEXT)(GLenum); // also supplied by GL_EXT_blend_subtract
#endif
//GL_ARB_texture_non_power_of_two
extern void (GLAPIENTRY *qglDeleteFramebuffersEXT)(GLsizei n, const GLuint *framebuffers);
extern void (GLAPIENTRY *qglGenFramebuffersEXT)(GLsizei n, GLuint *framebuffers);
extern GLenum (GLAPIENTRY *qglCheckFramebufferStatusEXT)(GLenum target);
-extern void (GLAPIENTRY *qglFramebufferTexture1DEXT)(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level);
+//extern void (GLAPIENTRY *qglFramebufferTexture1DEXT)(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level);
extern void (GLAPIENTRY *qglFramebufferTexture2DEXT)(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level);
extern void (GLAPIENTRY *qglFramebufferTexture3DEXT)(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level, GLint zoffset);
extern void (GLAPIENTRY *qglFramebufferRenderbufferEXT)(GLenum target, GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer);
extern void (GLAPIENTRY *qglPixelStoref)(GLenum pname, GLfloat param);
extern void (GLAPIENTRY *qglPixelStorei)(GLenum pname, GLint param);
-extern void (GLAPIENTRY *qglTexImage1D)(GLenum target, GLint level, GLint internalFormat, GLsizei width, GLint border, GLenum format, GLenum type, const GLvoid *pixels);
+//extern void (GLAPIENTRY *qglTexImage1D)(GLenum target, GLint level, GLint internalFormat, GLsizei width, GLint border, GLenum format, GLenum type, const GLvoid *pixels);
extern void (GLAPIENTRY *qglTexImage2D)(GLenum target, GLint level, GLint internalFormat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const GLvoid *pixels);
-extern void (GLAPIENTRY *qglTexSubImage1D)(GLenum target, GLint level, GLint xoffset, GLsizei width, GLenum format, GLenum type, const GLvoid *pixels);
+//extern void (GLAPIENTRY *qglTexSubImage1D)(GLenum target, GLint level, GLint xoffset, GLsizei width, GLenum format, GLenum type, const GLvoid *pixels);
extern void (GLAPIENTRY *qglTexSubImage2D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid *pixels);
-extern void (GLAPIENTRY *qglCopyTexImage1D)(GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width, GLint border);
+//extern void (GLAPIENTRY *qglCopyTexImage1D)(GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width, GLint border);
extern void (GLAPIENTRY *qglCopyTexImage2D)(GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width, GLsizei height, GLint border);
-extern void (GLAPIENTRY *qglCopyTexSubImage1D)(GLenum target, GLint level, GLint xoffset, GLint x, GLint y, GLsizei width);
+//extern void (GLAPIENTRY *qglCopyTexSubImage1D)(GLenum target, GLint level, GLint xoffset, GLint x, GLint y, GLsizei width);
extern void (GLAPIENTRY *qglCopyTexSubImage2D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height);
extern void (GLAPIENTRY *qglPolygonOffset)(GLfloat factor, GLfloat units);
extern int gl_support_texture_compression;
extern void (GLAPIENTRY *qglCompressedTexImage3DARB)(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLsizei imageSize, const void *data);
extern void (GLAPIENTRY *qglCompressedTexImage2DARB)(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, GLsizei imageSize, const void *data);
-extern void (GLAPIENTRY *qglCompressedTexImage1DARB)(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLint border, GLsizei imageSize, const void *data);
+//extern void (GLAPIENTRY *qglCompressedTexImage1DARB)(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLint border, GLsizei imageSize, const void *data);
extern void (GLAPIENTRY *qglCompressedTexSubImage3DARB)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLsizei imageSize, const void *data);
extern void (GLAPIENTRY *qglCompressedTexSubImage2DARB)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const void *data);
-extern void (GLAPIENTRY *qglCompressedTexSubImage1DARB)(GLenum target, GLint level, GLint xoffset, GLsizei width, GLenum format, GLsizei imageSize, const void *data);
+//extern void (GLAPIENTRY *qglCompressedTexSubImage1DARB)(GLenum target, GLint level, GLint xoffset, GLsizei width, GLenum format, GLsizei imageSize, const void *data);
extern void (GLAPIENTRY *qglGetCompressedTexImageARB)(GLenum target, GLint lod, void *img);
#ifndef GL_COMPRESSED_RGB_ARB
#define GL_COMPRESSED_ALPHA_ARB 0x84E9
// GL_EXT_bgra
#define GL_BGRA 0x80E1
+//GL_AMD_texture_texture4
+extern int gl_support_amd_texture_texture4;
+
+//GL_ARB_texture_gather
+extern int gl_support_arb_texture_gather;
+
#define DEBUGGL
#ifdef DEBUGGL