GLBackend

Constructors

this

this()

Load OpenGL library.

Members

Functions

activeTexture

void activeTexture(int texture_id)

Sets the "active texture" which is more precisely active texture unit.

clear

void clear()

clearColor

void clearColor(float r, float g, float b, float a)

debugCheck

void debugCheck()

Check for pending OpenGL errors, log a message if there is. Only for debug purpose since this check will be disabled in a release build.

extensions

string[] extensions()

Returns a slice made up of available extension names.

getFloat

float getFloat(GLenum pname)

Returns the requested float returned by glGetFloatv.

getInt

int getInt(GLenum pname)

Returns the requested int returned by glGetFloatv.

getString

const(char)[] getString(GLenum name)

Returns OpenGL string returned by glGetString.

getString

const(char)[] getString(GLenum name, GLuint index)

Returns OpenGL string returned by glGetStringi.

glslVersionString

const(char)[] glslVersionString()

Returns GLSL version string.

graphicsEngineString

const(char)[] graphicsEngineString()

Returns the name of the renderer. This name is typically specific to a particular configuration of a hardware platform.

majorVersion

int majorVersion()

Returns OpenGL major version.

maxColorAttachments

int maxColorAttachments()

Returns the maximum number of color attachments. This is the number of targets a fragment shader can output to. You can rely on this number being at least 4 if MRT is supported.

minorVersion

int minorVersion()

Returns OpenGL minor version.

reload

void reload()

Reload OpenGL function pointers. Once a first OpenGL context has been created, you should call reload() to get the context you want. This will attempt to load every OpenGL function except deprecated. Warning: This may be dangerous because drivers may miss some functions!

resizeViewport

void resizeViewport()

runtimeCheck

void runtimeCheck()

Checks pending OpenGL errors.

runtimeCheckNothrow

bool runtimeCheckNothrow()

Checks pending OpenGL errors. Returns true if at least one OpenGL error was pending. OpenGL error status is cleared.

supportsExtension

bool supportsExtension(string extension)

Returns true if the OpenGL extension is supported.

swapBuffers

void swapBuffers()

Swap OpenGL buffers.

vendor

Vendor vendor()

Tries to detect the driver maker. Returns identified vendor.

vendorString

const(char)[] vendorString()

Returns the company responsible for this OpenGL implementation.

versionString

const(char)[] versionString()

Returns OpenGL version string.

Static functions

errorString

string errorString(GLint er)

Undocumented in source. Be warned that the author may not have intended to support it.

Inherited Members

From VideoBackend

_extensions

string[] _extensions;

Undocumented in source.

_majorVersion

int _majorVersion;

Undocumented in source.

_minorVersion

int _minorVersion;

Undocumented in source.

_maxColorAttachments

int _maxColorAttachments;

Undocumented in source.

supportsExtension

bool supportsExtension(string extension)

reload

void reload()

debugCheck

void debugCheck()

runtimeCheck

void runtimeCheck()

runtimeCheckNothrow

bool runtimeCheckNothrow()

majorVersion

int majorVersion()

minorVersion

int minorVersion()

versionString

const(char)[] versionString()

vendorString

const(char)[] vendorString()

vendor

Vendor vendor()

graphicsEngineString

const(char)[] graphicsEngineString()

glslVersionString

const(char)[] glslVersionString()

extensions

string[] extensions()

maxColorAttachments

int maxColorAttachments()

activeTexture

void activeTexture(int texture_id)

resizeViewport

void resizeViewport()

clear

void clear()

clearColor

void clearColor(float r, float g, float b, float a)

swapBuffers

void swapBuffers()

• GLBackend
• GLException