Package org.lwjgl.opengles

Class NVViewportArray


  • public class NVViewportArray
extends java.lang.Object
    Native bindings to the NV_viewport_array extension.

    OpenGL ES is modeled on a pipeline of operations. The final stage in this pipeline before rasterization is the viewport transformation. This stage transforms vertices from view space into window coordinates and allows the application to specify a rectangular region of screen space into which OpenGL should draw primitives. Unextended OpenGL implementations provide a single viewport per context. In order to draw primitives into multiple viewports, the OpenGL viewport may be changed between several draw calls. With the advent of Geometry Shaders, it has become possible for an application to amplify geometry and produce multiple output primitives for each primitive input to the Geometry Shader. It is possible to direct these primitives to render into a selected render target. However, all render targets share the same, global OpenGL viewport.

    This extension enhances OpenGL by providing a mechanism to expose multiple viewports. Each viewport is specified as a rectangle. The destination viewport may be selected per-primitive by the geometry shader. This allows the Geometry Shader to produce different versions of primitives destined for separate viewport rectangles on the same surface. Additionally, when combined with multiple framebuffer attachments, it allows a different viewport rectangle to be selected for each. This extension also exposes a separate scissor rectangle for each viewport. Finally, the viewport bounds are now floating point quantities allowing fractional pixel offsets to be applied during the viewport transform.

    Requires GLES 3.1 and EXT_geometry_shader.

    • Field Detail

      • GL_MAX_VIEWPORTS_NV

        public static final int GL_MAX_VIEWPORTS_NV
        Accepted by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetInteger64v.
        See Also:
        Constant Field Values

      • GL_VIEWPORT_SUBPIXEL_BITS_NV

        public static final int GL_VIEWPORT_SUBPIXEL_BITS_NV
        Accepted by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetInteger64v.
        See Also:
        Constant Field Values

      • GL_VIEWPORT_BOUNDS_RANGE_NV

        public static final int GL_VIEWPORT_BOUNDS_RANGE_NV
        Accepted by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetInteger64v.
        See Also:
        Constant Field Values

      • GL_VIEWPORT_INDEX_PROVOKING_VERTEX_NV

        public static final int GL_VIEWPORT_INDEX_PROVOKING_VERTEX_NV
        Accepted by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetInteger64v.
        See Also:
        Constant Field Values

    • Method Detail

      • glViewportArrayvNV

        public static void glViewportArrayvNV(int first,
                                      java.nio.FloatBuffer v)

      • glViewportIndexedfNV

        public static void glViewportIndexedfNV(int index,
                                        float x,
                                        float y,
                                        float w,
                                        float h)

      • glViewportIndexedfvNV

        public static void glViewportIndexedfvNV(int index,
                                         java.nio.FloatBuffer v)

      • glScissorArrayvNV

        public static void glScissorArrayvNV(int first,
                                     java.nio.IntBuffer v)

      • glScissorIndexedNV

        public static void glScissorIndexedNV(int index,
                                      int left,
                                      int bottom,
                                      int width,
                                      int height)

      • glScissorIndexedvNV

        public static void glScissorIndexedvNV(int index,
                                       java.nio.IntBuffer v)

      • glDepthRangeArrayfvNV

        public static void glDepthRangeArrayfvNV(int first,
                                         java.nio.FloatBuffer v)

      • glDepthRangeIndexedfNV

        public static void glDepthRangeIndexedfNV(int index,
                                          float n,
                                          float f)

      • glGetFloati_vNV

        public static void glGetFloati_vNV(int target,
                                   int index,
                                   java.nio.FloatBuffer data)

      • glGetFloatiNV

        public static float glGetFloatiNV(int target,
                                  int index)

      • glEnableiNV

        public static void glEnableiNV(int target,
                               int index)

      • glDisableiNV

        public static void glDisableiNV(int target,
                                int index)

      • glIsEnablediNV

        public static boolean glIsEnablediNV(int target,
                                     int index)

      • glViewportArrayvNV

        public static void glViewportArrayvNV(int first,
                                      float[] v)
        Array version of: ViewportArrayvNV

      • glViewportIndexedfvNV

        public static void glViewportIndexedfvNV(int index,
                                         float[] v)
        Array version of: ViewportIndexedfvNV

      • glScissorArrayvNV

        public static void glScissorArrayvNV(int first,
                                     int[] v)
        Array version of: ScissorArrayvNV

      • glScissorIndexedvNV

        public static void glScissorIndexedvNV(int index,
                                       int[] v)
        Array version of: ScissorIndexedvNV

      • glDepthRangeArrayfvNV

        public static void glDepthRangeArrayfvNV(int first,
                                         float[] v)
        Array version of: DepthRangeArrayfvNV

      • glGetFloati_vNV

        public static void glGetFloati_vNV(int target,
                                   int index,
                                   float[] data)
        Array version of: GetFloati_vNV