Package dev.engine_room.flywheel.backend.gl

Class GlCompat

java.lang.Object

dev.engine_room.flywheel.backend.gl.GlCompat

public final class GlCompat
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static final boolean	ALLOW_DSA
static final @UnknownNullability org.lwjgl.opengl.GLCapabilities	CAPABILITIES
static final Driver	DRIVER
static final String	GL_RENDERER_STRING
static final String	GL_SHADING_LANGUAGE_VERSION_STRING
static final String	GL_VENDOR_STRING
static final String	GL_VERSION_STRING
static final GlslVersion	MAX_GLSL_VERSION
static final int	SUBGROUP_SIZE
static final boolean	SUPPORTS_DSA
static final boolean	SUPPORTS_INDIRECT
static final boolean	SUPPORTS_INSTANCING

Method Summary

Modifier and Type	Method	Description
static int	getComputeGroupCount(int invocations)
static void	init()
static void	safeMultiDrawElementsIndirect(GlProgram drawProgram, int mode, int type, int start, int end, long stride)	Similar in function to GL43.glMultiDrawElementsIndirect(int, int, long, int, int), but uses consecutive DI instead of MDI if MDI is known to not work well with the current driver.
static void	safeShaderSource(int glId, CharSequence source)	Modified from: canvas

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

CAPABILITIES

public static final @UnknownNullability org.lwjgl.opengl.GLCapabilities CAPABILITIES

GL_VENDOR_STRING

public static final String GL_VENDOR_STRING

GL_RENDERER_STRING

public static final String GL_RENDERER_STRING

GL_VERSION_STRING

public static final String GL_VERSION_STRING

GL_SHADING_LANGUAGE_VERSION_STRING

public static final String GL_SHADING_LANGUAGE_VERSION_STRING

DRIVER

public static final Driver DRIVER

SUBGROUP_SIZE

public static final int SUBGROUP_SIZE

ALLOW_DSA

public static final boolean ALLOW_DSA

See Also:

• Constant Field Values

MAX_GLSL_VERSION

public static final GlslVersion MAX_GLSL_VERSION

SUPPORTS_DSA

public static final boolean SUPPORTS_DSA

SUPPORTS_INSTANCING

public static final boolean SUPPORTS_INSTANCING

SUPPORTS_INDIRECT

public static final boolean SUPPORTS_INDIRECT

Method Details

init

public static void init()

getComputeGroupCount

public static int getComputeGroupCount(int invocations)

safeShaderSource

public static void safeShaderSource(int glId,
 CharSequence source)

Modified from:
canvas

Identical in function to GL20C.glShaderSource(int, CharSequence) but passes a null pointer for string length to force the driver to rely on the null terminator for string length. This is a workaround for an apparent flaw with some AMD drivers that don't receive or interpret the length correctly, resulting in an access violation when the driver tries to read past the string memory.

Hat tip to fewizz for the find and the fix.

safeMultiDrawElementsIndirect

public static void safeMultiDrawElementsIndirect(GlProgram drawProgram,
 int mode,
 int type,
 int start,
 int end,
 long stride)

Similar in function to GL43.glMultiDrawElementsIndirect(int, int, long, int, int), but uses consecutive DI instead of MDI if MDI is known to not work well with the current driver. Unlike the original function, stride cannot be equal to 0.