#include "lib/external_libraries/opengl.h"
#include "lib/external_libraries/glext_funcs.h"

Macros
#define	GL_MIN_PROGRAM_TEXEL_OFFSET 0x8904

#define	GL_MAX_PROGRAM_TEXEL_OFFSET 0x8905

#define	GL_MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS_EXT 0x8C8A

#define	GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS_EXT 0x8C8B

#define	GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS_EXT 0x8C80

#define	GL_MAX_GEOMETRY_TEXTURE_IMAGE_UNITS_ARB 0x8C29

#define	GL_MAX_GEOMETRY_VARYING_COMPONENTS_ARB 0x8DDD

#define	GL_MAX_VERTEX_VARYING_COMPONENTS_ARB 0x8DDE

#define	GL_MAX_GEOMETRY_UNIFORM_COMPONENTS_ARB 0x8DDF

#define	GL_MAX_GEOMETRY_OUTPUT_VERTICES_ARB 0x8DE0

#define	GL_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS_ARB 0x8DE1

#define	GL_TIME_ELAPSED 0x88BF

#define	GL_TIMESTAMP 0x8E28

#define	GL_INVALID_FRAMEBUFFER_OPERATION 0x0506

#define	GL_MAX_ARRAY_TEXTURE_LAYERS_EXT 0x88FF

#define	GL_CALL_CONV

#define	FUNC(ret, name, params) EXTERN_C ret (GL_CALL_CONV *p##name) params;

#define	FUNC2(ret, nameARB, nameCore, version, params) EXTERN_C ret (GL_CALL_CONV *p##nameARB) params;

#define	FUNC3(ret, nameARB, nameCore, version, params) EXTERN_C ret (GL_CALL_CONV *p##nameCore) params;

Typedefs
typedef int64_t	GLint64

typedef uint64_t	GLuint64

Functions
void	ogl_Init ()
	initialization: import extension function pointers and do feature detect. More...

bool	ogl_HaveExtension (const char *ext)
	check if an extension is supported by the OpenGL implementation. More...

bool	ogl_HaveVersion (const char *version)
	make sure the OpenGL implementation version matches or is newer than the given version. More...

const char *	ogl_HaveExtensions (int dummy,...) SENTINEL_ARG
	check if a list of extensions are all supported (as determined by ogl_HaveExtension). More...

const char *	ogl_ExtensionString ()
	get a list of all supported extensions. More...

void	ogl_WarnIfError ()
	raise a warning (break into the debugger) if an OpenGL error is pending. More...

bool	ogl_SquelchError (GLenum err_to_ignore)
	ignore and reset the specified OpenGL error. More...

Variables
GLint	ogl_max_tex_size

GLint	ogl_max_tex_units
	[pixels] More...

Macro Definition Documentation

#define FUNC	(	ret,
		name,
		params
	)	EXTERN_C ret (GL_CALL_CONV *p##name) params;

Definition at line 130 of file ogl.h.

#define FUNC2	(	ret,
		nameARB,
		nameCore,
		version,
		params
	)	EXTERN_C ret (GL_CALL_CONV *p##nameARB) params;

Definition at line 131 of file ogl.h.

#define FUNC3	(	ret,
		nameARB,
		nameCore,
		version,
		params
	)	EXTERN_C ret (GL_CALL_CONV *p##nameCore) params;

Definition at line 132 of file ogl.h.

#define GL_CALL_CONV

Definition at line 128 of file ogl.h.

#define GL_INVALID_FRAMEBUFFER_OPERATION 0x0506

Definition at line 112 of file ogl.h.

#define GL_MAX_ARRAY_TEXTURE_LAYERS_EXT 0x88FF

Definition at line 116 of file ogl.h.

#define GL_MAX_GEOMETRY_OUTPUT_VERTICES_ARB 0x8DE0

Definition at line 104 of file ogl.h.

#define GL_MAX_GEOMETRY_TEXTURE_IMAGE_UNITS_ARB 0x8C29

Definition at line 100 of file ogl.h.

#define GL_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS_ARB 0x8DE1

Definition at line 105 of file ogl.h.

#define GL_MAX_GEOMETRY_UNIFORM_COMPONENTS_ARB 0x8DDF

Definition at line 103 of file ogl.h.

#define GL_MAX_GEOMETRY_VARYING_COMPONENTS_ARB 0x8DDD

Definition at line 101 of file ogl.h.

#define GL_MAX_PROGRAM_TEXEL_OFFSET 0x8905

Definition at line 92 of file ogl.h.

#define GL_MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS_EXT 0x8C8A

Definition at line 95 of file ogl.h.

#define GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS_EXT 0x8C8B

Definition at line 96 of file ogl.h.

#define GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS_EXT 0x8C80

Definition at line 97 of file ogl.h.

#define GL_MAX_VERTEX_VARYING_COMPONENTS_ARB 0x8DDE

Definition at line 102 of file ogl.h.

#define GL_MIN_PROGRAM_TEXEL_OFFSET 0x8904

Definition at line 91 of file ogl.h.

#define GL_TIME_ELAPSED 0x88BF

Definition at line 108 of file ogl.h.

#define GL_TIMESTAMP 0x8E28

Definition at line 109 of file ogl.h.

Typedef Documentation

typedef int64_t GLint64

Definition at line 120 of file ogl.h.

typedef uint64_t GLuint64

Definition at line 121 of file ogl.h.

Function Documentation

const char* ogl_ExtensionString ( )

get a list of all supported extensions.

useful for crash logs / system information.

Returns: read-only C string of unspecified length containing all advertised extension names, separated by space.

Definition at line 68 of file ogl.cpp.

bool ogl_HaveExtension ( const char * ext )

check if an extension is supported by the OpenGL implementation.

takes subsequently added core support for some extensions into account (in case drivers forget to advertise extensions).

Parameters

ext	extension string; exact case.

Returns: bool.

Definition at line 187 of file ogl.cpp.

const char* ogl_HaveExtensions	(	int	dummy,
			...
	)

check if a list of extensions are all supported (as determined by ogl_HaveExtension).

Parameters

dummy value ignored; varargs requires a placeholder. follow it by a list of const char* extension string parameters, terminated by a 0 pointer.

Returns: 0 if all are present; otherwise, the first extension in the list that's not supported (useful for reporting errors).

Definition at line 266 of file ogl.cpp.

bool ogl_HaveVersion ( const char * version )

make sure the OpenGL implementation version matches or is newer than the given version.

Parameters

version version string; format: ("%d.%d", major, minor). example: "1.2".

Definition at line 219 of file ogl.cpp.

void ogl_Init ( )

initialization: import extension function pointers and do feature detect.

call before using any other function, and after each video mode change. fails if OpenGL not ready for use.

Definition at line 473 of file ogl.cpp.

bool ogl_SquelchError ( GLenum err_to_ignore )

ignore and reset the specified OpenGL error.

this is useful for suppressing annoying error messages, e.g. "invalid enum" for GL_CLAMP_TO_EDGE even though we've already warned the user that their OpenGL implementation is too old.

call after the fact, i.e. the error has been raised. if another or different error is pending, those are reported immediately.

Parameters

err_to_ignore,: one of the glGetError enums.

Returns: true if the requested error was seen and ignored

Definition at line 430 of file ogl.cpp.

void ogl_WarnIfError ( )

raise a warning (break into the debugger) if an OpenGL error is pending.

resets the OpenGL error state afterwards.

when an error is reported, insert calls to this in a binary-search scheme to quickly narrow down the actual error location.

reports a bogus invalid_operation error if called before OpenGL is initialized, so don't!

disabled in release mode for efficiency and to avoid annoying errors.

Definition at line 398 of file ogl.cpp.

Variable Documentation

GLint ogl_max_tex_size

Definition at line 468 of file ogl.cpp.

GLint ogl_max_tex_units

[pixels]

Definition at line 469 of file ogl.cpp.

Macros

Typedefs

Functions

Variables

Macro Definition Documentation

Typedef Documentation

Function Documentation

Variable Documentation