Package org.lwjgl.egl

Class EXTSurfaceCompression

java.lang.Object

org.lwjgl.egl.EXTSurfaceCompression

public class EXTSurfaceCompression
extends java.lang.Object

Native bindings to the EXT_surface_compression extension.

Applications may wish to take advantage of framebuffer compression. Some platforms may support framebuffer compression at fixed bitrates. Such compression algorithms generally produce results that are visually lossless, but the results are typically not bit exact when compared to a non-compressed result.

This extension enables applications to opt-in to fixed-rate compression for EGL window surfaces.

Compression may not be supported for all framebuffer formats. It can still be requested for all formats and applications can query what level of compression was actually enabled.

Field Summary

Fields

Modifier and Type	Field	Description
static int	EGL_SURFACE_COMPRESSION_EXT	New attributes accepted by the attrib_list argument of CreatePlatformWindowSurface and CreateWindowSurface.
static int	EGL_SURFACE_COMPRESSION_FIXED_RATE_10BPC_EXT EGL_SURFACE_COMPRESSION_FIXED_RATE_11BPC_EXT EGL_SURFACE_COMPRESSION_FIXED_RATE_12BPC_EXT EGL_SURFACE_COMPRESSION_FIXED_RATE_1BPC_EXT EGL_SURFACE_COMPRESSION_FIXED_RATE_2BPC_EXT EGL_SURFACE_COMPRESSION_FIXED_RATE_3BPC_EXT EGL_SURFACE_COMPRESSION_FIXED_RATE_4BPC_EXT EGL_SURFACE_COMPRESSION_FIXED_RATE_5BPC_EXT EGL_SURFACE_COMPRESSION_FIXED_RATE_6BPC_EXT EGL_SURFACE_COMPRESSION_FIXED_RATE_7BPC_EXT EGL_SURFACE_COMPRESSION_FIXED_RATE_8BPC_EXT EGL_SURFACE_COMPRESSION_FIXED_RATE_9BPC_EXT EGL_SURFACE_COMPRESSION_FIXED_RATE_DEFAULT_EXT EGL_SURFACE_COMPRESSION_FIXED_RATE_NONE_EXT	Accepted as attribute values for SURFACE_COMPRESSION_EXT by CreatePlatformWindowSurface and CreateWindowSurface.
static int	EGL_SURFACE_COMPRESSION_PLANE1_EXT EGL_SURFACE_COMPRESSION_PLANE2_EXT	New attributes accepted by the attrib_list argument of CreatePlatformWindowSurface and CreateWindowSurface.

Method Summary

Modifier and Type	Method	Description
static boolean	eglQuerySupportedCompressionRatesEXT(long dpy, long config, org.lwjgl.PointerBuffer attrib_list, int[] rates, int[] num_rates)	Array version of: QuerySupportedCompressionRatesEXT
static boolean	eglQuerySupportedCompressionRatesEXT(long dpy, long config, org.lwjgl.PointerBuffer attrib_list, java.nio.IntBuffer rates, java.nio.IntBuffer num_rates)	Gets the list of all fixed-rate compression rates that are available on a specified display and EGLConfig.
static int	neglQuerySupportedCompressionRatesEXT(long dpy, long config, long attrib_list, long rates, int rate_size, long num_rates)	Unsafe version of: QuerySupportedCompressionRatesEXT

Methods inherited from class java.lang.Object

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

Field Detail

EGL_SURFACE_COMPRESSION_EXT, EGL_SURFACE_COMPRESSION_PLANE1_EXT, EGL_SURFACE_COMPRESSION_PLANE2_EXT

New attributes accepted by the attrib_list argument of CreatePlatformWindowSurface and CreateWindowSurface.

EGL_SURFACE_COMPRESSION_FIXED_RATE_NONE_EXT, EGL_SURFACE_COMPRESSION_FIXED_RATE_DEFAULT_EXT, EGL_SURFACE_COMPRESSION_FIXED_RATE_1BPC_EXT, EGL_SURFACE_COMPRESSION_FIXED_RATE_2BPC_EXT, EGL_SURFACE_COMPRESSION_FIXED_RATE_3BPC_EXT, EGL_SURFACE_COMPRESSION_FIXED_RATE_4BPC_EXT, EGL_SURFACE_COMPRESSION_FIXED_RATE_5BPC_EXT, EGL_SURFACE_COMPRESSION_FIXED_RATE_6BPC_EXT, EGL_SURFACE_COMPRESSION_FIXED_RATE_7BPC_EXT, EGL_SURFACE_COMPRESSION_FIXED_RATE_8BPC_EXT, EGL_SURFACE_COMPRESSION_FIXED_RATE_9BPC_EXT, EGL_SURFACE_COMPRESSION_FIXED_RATE_10BPC_EXT, EGL_SURFACE_COMPRESSION_FIXED_RATE_11BPC_EXT, EGL_SURFACE_COMPRESSION_FIXED_RATE_12BPC_EXT

Accepted as attribute values for SURFACE_COMPRESSION_EXT by CreatePlatformWindowSurface and CreateWindowSurface.

Method Detail

neglQuerySupportedCompressionRatesEXT

public static int neglQuerySupportedCompressionRatesEXT(long dpy,
                                                        long config,
                                                        long attrib_list,
                                                        long rates,
                                                        int rate_size,
                                                        long num_rates)

Unsafe version of: QuerySupportedCompressionRatesEXT

eglQuerySupportedCompressionRatesEXT

public static boolean eglQuerySupportedCompressionRatesEXT(long dpy,
                                                           long config,
                                                           @Nullable
                                                           org.lwjgl.PointerBuffer attrib_list,
                                                           @Nullable
                                                           java.nio.IntBuffer rates,
                                                           java.nio.IntBuffer num_rates)

Gets the list of all fixed-rate compression rates that are available on a specified display and EGLConfig.

The number of rates is returned in num_rates, and elements 0 through num_rates-1 of rates are filled in with the available compression rates.

No more than rate_size compression rates will be returned even if more are available on the specified display and config. However, if eglQuerySupportedCompressionRatesEXT is called with rates = NULL, then no rates are returned, but the total number of rates available will be returned in num_rates.

The possible values returned in rates are the attribute values accepted for SURFACE_COMPRESSION_EXT by CreatePlatformWindowSurface and CreateWindowSurface, except SURFACE_COMPRESSION_FIXED_RATE_NONE_EXT and SURFACE_COMPRESSION_FIXED_RATE_DEFAULT_EXT.

Parameters:

attrib_list - a list of attributes that will be provided when a surface is created with this combination of display and EGLConfig. The accepted attributes are the same as for CreatePlatformWindowSurface.

rates - a pointer to a buffer containing rate_size elements.

Returns:

TRUE on success.

eglQuerySupportedCompressionRatesEXT

public static boolean eglQuerySupportedCompressionRatesEXT(long dpy,
                                                           long config,
                                                           @Nullable
                                                           org.lwjgl.PointerBuffer attrib_list,
                                                           @Nullable
                                                           int[] rates,
                                                           int[] num_rates)

Array version of: QuerySupportedCompressionRatesEXT