Package org.lwjgl.opengl

Class NVViewportSwizzle

java.lang.Object

org.lwjgl.opengl.NVViewportSwizzle

public class NVViewportSwizzle
extends java.lang.Object

Native bindings to the NV_viewport_swizzle extension.

This extension provides a new per-viewport swizzle that can modify the position of primitives sent to each viewport. New viewport swizzle state is added for each viewport, and a new position vector is computed for each vertex by selecting from and optionally negating any of the four components of the original position vector.

This new viewport swizzle is useful for a number of algorithms, including single-pass cubemap rendering (broadcasting a primitive to multiple faces and reorienting the vertex position for each face) and voxel rasterization. The per-viewport component remapping and negation provided by the swizzle allows application code to re-orient three-dimensional geometry with a view along any of the X, Y, or Z axes. If a perspective projection and depth buffering is required, 1/W buffering should be used, as described in the single-pass cubemap rendering example in the "Issues" section below.

Field Summary

Fields

Modifier and Type	Field	Description
static int	GL_VIEWPORT_SWIZZLE_NEGATIVE_W_NV GL_VIEWPORT_SWIZZLE_NEGATIVE_X_NV GL_VIEWPORT_SWIZZLE_NEGATIVE_Y_NV GL_VIEWPORT_SWIZZLE_NEGATIVE_Z_NV GL_VIEWPORT_SWIZZLE_POSITIVE_W_NV GL_VIEWPORT_SWIZZLE_POSITIVE_X_NV GL_VIEWPORT_SWIZZLE_POSITIVE_Y_NV GL_VIEWPORT_SWIZZLE_POSITIVE_Z_NV	Accepted by the swizzlex, swizzley, swizzlez, and swizzlew parameters of ViewportSwizzleNV.
static int	GL_VIEWPORT_SWIZZLE_W_NV GL_VIEWPORT_SWIZZLE_X_NV GL_VIEWPORT_SWIZZLE_Y_NV GL_VIEWPORT_SWIZZLE_Z_NV	Accepted by the pname parameter of GetBooleani_v, GetDoublei_v, GetIntegeri_v, GetFloati_v, and GetInteger64i_v.

Method Summary

Modifier and Type	Method	Description
static void	glViewportSwizzleNV(int index, int swizzlex, int swizzley, int swizzlez, int swizzlew)	Sets the swizzle state for the specified viewport.

Methods inherited from class java.lang.Object

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

Field Detail

GL_VIEWPORT_SWIZZLE_POSITIVE_X_NV, GL_VIEWPORT_SWIZZLE_NEGATIVE_X_NV, GL_VIEWPORT_SWIZZLE_POSITIVE_Y_NV, GL_VIEWPORT_SWIZZLE_NEGATIVE_Y_NV, GL_VIEWPORT_SWIZZLE_POSITIVE_Z_NV, GL_VIEWPORT_SWIZZLE_NEGATIVE_Z_NV, GL_VIEWPORT_SWIZZLE_POSITIVE_W_NV, GL_VIEWPORT_SWIZZLE_NEGATIVE_W_NV

Accepted by the swizzlex, swizzley, swizzlez, and swizzlew parameters of ViewportSwizzleNV.

GL_VIEWPORT_SWIZZLE_X_NV, GL_VIEWPORT_SWIZZLE_Y_NV, GL_VIEWPORT_SWIZZLE_Z_NV, GL_VIEWPORT_SWIZZLE_W_NV

Accepted by the pname parameter of GetBooleani_v, GetDoublei_v, GetIntegeri_v, GetFloati_v, and GetInteger64i_v.

Method Detail

glViewportSwizzleNV

public static void glViewportSwizzleNV(int index,
                                       int swizzlex,
                                       int swizzley,
                                       int swizzlez,
                                       int swizzlew)

Sets the swizzle state for the specified viewport.

Parameters:

index - the viewport index

swizzlex - the x swizzle state. One of:

VIEWPORT_SWIZZLE_POSITIVE_X_NV	VIEWPORT_SWIZZLE_NEGATIVE_X_NV
VIEWPORT_SWIZZLE_POSITIVE_Y_NV	VIEWPORT_SWIZZLE_NEGATIVE_Y_NV
VIEWPORT_SWIZZLE_POSITIVE_Z_NV	VIEWPORT_SWIZZLE_NEGATIVE_Z_NV
VIEWPORT_SWIZZLE_POSITIVE_W_NV	VIEWPORT_SWIZZLE_NEGATIVE_W_NV

swizzley - the y swizzle state. One of:

VIEWPORT_SWIZZLE_POSITIVE_X_NV	VIEWPORT_SWIZZLE_NEGATIVE_X_NV
VIEWPORT_SWIZZLE_POSITIVE_Y_NV	VIEWPORT_SWIZZLE_NEGATIVE_Y_NV
VIEWPORT_SWIZZLE_POSITIVE_Z_NV	VIEWPORT_SWIZZLE_NEGATIVE_Z_NV
VIEWPORT_SWIZZLE_POSITIVE_W_NV	VIEWPORT_SWIZZLE_NEGATIVE_W_NV

swizzlez - the z swizzle state. One of:

VIEWPORT_SWIZZLE_POSITIVE_X_NV	VIEWPORT_SWIZZLE_NEGATIVE_X_NV
VIEWPORT_SWIZZLE_POSITIVE_Y_NV	VIEWPORT_SWIZZLE_NEGATIVE_Y_NV
VIEWPORT_SWIZZLE_POSITIVE_Z_NV	VIEWPORT_SWIZZLE_NEGATIVE_Z_NV
VIEWPORT_SWIZZLE_POSITIVE_W_NV	VIEWPORT_SWIZZLE_NEGATIVE_W_NV

swizzlew - the w swizzle state. One of:

VIEWPORT_SWIZZLE_POSITIVE_X_NV	VIEWPORT_SWIZZLE_NEGATIVE_X_NV
VIEWPORT_SWIZZLE_POSITIVE_Y_NV	VIEWPORT_SWIZZLE_NEGATIVE_Y_NV
VIEWPORT_SWIZZLE_POSITIVE_Z_NV	VIEWPORT_SWIZZLE_NEGATIVE_Z_NV
VIEWPORT_SWIZZLE_POSITIVE_W_NV	VIEWPORT_SWIZZLE_NEGATIVE_W_NV