java.lang.Object
- org.lwjgl.opengles.EXTGeometryShader

```
public class EXTGeometryShader
extends java.lang.Object
```
Native bindings to the EXT_geometry_shader extension.
EXT_geometry_shader defines a new shader type available to be run on the GPU, called a geometry shader. Geometry shaders are run after vertices are transformed, but prior to color clamping, flatshading and clipping.

A geometry shader begins with a single primitive (point, line, triangle). It can read the attributes of any of the vertices in the primitive and use them to generate new primitives. A geometry shader has a fixed output primitive type (point, line strip, or triangle strip) and emits vertices to define a new primitive. A geometry shader can emit multiple disconnected primitives. The primitives emitted by the geometry shader are clipped and then processed like an equivalent primitive specified by the application.

Furthermore, EXT_geometry_shader provides four additional primitive types: lines with adjacency, line strips with adjacency, separate triangles with adjacency, and triangle strips with adjacency. Some of the vertices specified in these new primitive types are not part of the ordinary primitives, instead they represent neighboring vertices that are adjacent to the two line segment end points (lines/strips) or the three triangle edges (triangles/tstrips). These vertices can be accessed by geometry shaders and used to match up the vertices emitted by the geometry shader with those of neighboring primitives.

Since geometry shaders expect a specific input primitive type, an error will occur if the application presents primitives of a different type. For example, if a geometry shader expects points, an error will occur at drawing time if a primitive mode of TRIANGLES is specified.

This extension also adds the notion of layered framebuffer attachments and framebuffers that can be used in conjunction with geometry shaders to allow programs to direct primitives to a face of a cube map or layer of a three-dimensional texture or two-dimensional array texture. The layer used for rendering can be selected by the geometry shader at run time. The framebuffer layer count present in GL 4.x and removed from ES 3.1 is restored.

Not all geometry shader implementations have the ability to write the point size from a geometry shader. Thus a second extension string and shading language enable are provided for implementations which do support geometry shader point size.

This extension relies on the EXT_shader_io_blocks extension to provide the required functionality for declaring input and output blocks and interfacing between shaders.

Requires GLES 3.1.

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`GL_FIRST_VERTEX_CONVENTION_EXT` Returned in the `data` parameter from a Get query with a `pname` of LAYER_PROVOKING_VERTEX_EXT.
`static int`	`GL_FRAMEBUFFER_ATTACHMENT_LAYERED_EXT` Accepted by the `pname` parameter of GetFramebufferAttachmentParameteriv.
`static int`	`GL_FRAMEBUFFER_DEFAULT_LAYERS_EXT` Accepted by the `pname` parameter of FramebufferParameteri, and GetFramebufferParameteriv.
`static int`	`GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS_EXT` Returned by CheckFramebufferStatus.
`static int`	`GL_GEOMETRY_LINKED_INPUT_TYPE_EXT GL_GEOMETRY_LINKED_OUTPUT_TYPE_EXT GL_GEOMETRY_LINKED_VERTICES_OUT_EXT` Accepted by the `pname` parameter of GetProgramiv.
`static int`	`GL_GEOMETRY_SHADER_BIT_EXT` Accepted by the `stages` parameter of UseProgramStages.
`static int`	`GL_GEOMETRY_SHADER_EXT` Accepted by the `type` parameter of CreateShader and CreateShaderProgramv, by the `pname` parameter of GetProgramPipelineiv and returned in the `params` parameter of GetShaderiv when `pname` is SHADER_TYPE.
`static int`	`GL_GEOMETRY_SHADER_INVOCATIONS_EXT` Accepted by the `pname` parameter of GetProgramiv.
`static int`	`GL_LAST_VERTEX_CONVENTION_EXT` Returned in the `data` parameter from a Get query with a `pname` of LAYER_PROVOKING_VERTEX_EXT.
`static int`	`GL_LAYER_PROVOKING_VERTEX_EXT` Accepted by the `pname` parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetInteger64v.
`static int`	`GL_LINE_STRIP_ADJACENCY_EXT GL_LINES_ADJACENCY_EXT` Accepted by the `mode` parameter of DrawArrays, DrawElements, and other commands which draw primitives.
`static int`	`GL_MAX_COMBINED_GEOMETRY_UNIFORM_COMPONENTS_EXT` Accepted by the `pname` parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetInteger64v.
`static int`	`GL_MAX_FRAMEBUFFER_LAYERS_EXT` Accepted by the `pname` parameter of GetIntegerv, GetBooleanv, GetInteger64v, and GetFloatv.
`static int`	`GL_MAX_GEOMETRY_ATOMIC_COUNTER_BUFFERS_EXT GL_MAX_GEOMETRY_ATOMIC_COUNTERS_EXT GL_MAX_GEOMETRY_IMAGE_UNIFORMS_EXT GL_MAX_GEOMETRY_INPUT_COMPONENTS_EXT GL_MAX_GEOMETRY_OUTPUT_COMPONENTS_EXT GL_MAX_GEOMETRY_OUTPUT_VERTICES_EXT GL_MAX_GEOMETRY_SHADER_INVOCATIONS_EXT GL_MAX_GEOMETRY_SHADER_STORAGE_BLOCKS_EXT GL_MAX_GEOMETRY_TEXTURE_IMAGE_UNITS_EXT GL_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS_EXT GL_MAX_GEOMETRY_UNIFORM_BLOCKS_EXT GL_MAX_GEOMETRY_UNIFORM_COMPONENTS_EXT` Accepted by the `pname` parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetInteger64v.
`static int`	`GL_PRIMITIVES_GENERATED_EXT` Accepted by the `target` parameter of BeginQuery, EndQuery, GetQueryiv, and GetQueryObjectuiv.
`static int`	`GL_REFERENCED_BY_GEOMETRY_SHADER_EXT` Accepted by the `props` parameter of GetProgramResourceiv.
`static int`	`GL_TRIANGLE_STRIP_ADJACENCY_EXT GL_TRIANGLES_ADJACENCY_EXT` Accepted by the `mode` parameter of DrawArrays, DrawElements, and other commands which draw primitives.
`static int`	`GL_UNDEFINED_VERTEX_EXT` Returned in the `data` parameter from a Get query with a `pname` of LAYER_PROVOKING_VERTEX_EXT.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static void`	`glFramebufferTextureEXT(int target, int attachment, int texture, int level)`

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - GL_GEOMETRY_SHADER_EXT
```
public static final int GL_GEOMETRY_SHADER_EXT
```
    Accepted by the type parameter of CreateShader and CreateShaderProgramv, by the pname parameter of GetProgramPipelineiv and returned in the params parameter of GetShaderiv when pname is SHADER_TYPE.
    
    See Also:
    
    Constant Field Values
  - GL_GEOMETRY_SHADER_BIT_EXT
```
public static final int GL_GEOMETRY_SHADER_BIT_EXT
```
    Accepted by the stages parameter of UseProgramStages.
    
    See Also:
    
    Constant Field Values
  - GL_GEOMETRY_LINKED_VERTICES_OUT_EXT
```
public static final int GL_GEOMETRY_LINKED_VERTICES_OUT_EXT
```
    Accepted by the pname parameter of GetProgramiv.
    
    See Also:
    
    Constant Field Values
  - GL_GEOMETRY_LINKED_INPUT_TYPE_EXT
```
public static final int GL_GEOMETRY_LINKED_INPUT_TYPE_EXT
```
    Accepted by the pname parameter of GetProgramiv.
    
    See Also:
    
    Constant Field Values
  - GL_GEOMETRY_LINKED_OUTPUT_TYPE_EXT
```
public static final int GL_GEOMETRY_LINKED_OUTPUT_TYPE_EXT
```
    Accepted by the pname parameter of GetProgramiv.
    
    See Also:
    
    Constant Field Values
  - GL_GEOMETRY_SHADER_INVOCATIONS_EXT
```
public static final int GL_GEOMETRY_SHADER_INVOCATIONS_EXT
```
    Accepted by the pname parameter of GetProgramiv.
    
    See Also:
    
    Constant Field Values
  - GL_LAYER_PROVOKING_VERTEX_EXT
```
public static final int GL_LAYER_PROVOKING_VERTEX_EXT
```
    Accepted by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetInteger64v.
    
    See Also:
    
    Constant Field Values
  - GL_MAX_GEOMETRY_UNIFORM_COMPONENTS_EXT
```
public static final int GL_MAX_GEOMETRY_UNIFORM_COMPONENTS_EXT
```
    Accepted by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetInteger64v.
    
    See Also:
    
    Constant Field Values
  - GL_MAX_GEOMETRY_UNIFORM_BLOCKS_EXT
```
public static final int GL_MAX_GEOMETRY_UNIFORM_BLOCKS_EXT
```
    Accepted by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetInteger64v.
    
    See Also:
    
    Constant Field Values
  - GL_MAX_COMBINED_GEOMETRY_UNIFORM_COMPONENTS_EXT
```
public static final int GL_MAX_COMBINED_GEOMETRY_UNIFORM_COMPONENTS_EXT
```
    Accepted by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetInteger64v.
    
    See Also:
    
    Constant Field Values
  - GL_MAX_GEOMETRY_INPUT_COMPONENTS_EXT
```
public static final int GL_MAX_GEOMETRY_INPUT_COMPONENTS_EXT
```
    Accepted by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetInteger64v.
    
    See Also:
    
    Constant Field Values
  - GL_MAX_GEOMETRY_OUTPUT_COMPONENTS_EXT
```
public static final int GL_MAX_GEOMETRY_OUTPUT_COMPONENTS_EXT
```
    Accepted by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetInteger64v.
    
    See Also:
    
    Constant Field Values
  - GL_MAX_GEOMETRY_OUTPUT_VERTICES_EXT
```
public static final int GL_MAX_GEOMETRY_OUTPUT_VERTICES_EXT
```
    Accepted by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetInteger64v.
    
    See Also:
    
    Constant Field Values
  - GL_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS_EXT
```
public static final int GL_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS_EXT
```
    Accepted by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetInteger64v.
    
    See Also:
    
    Constant Field Values
  - GL_MAX_GEOMETRY_SHADER_INVOCATIONS_EXT
```
public static final int GL_MAX_GEOMETRY_SHADER_INVOCATIONS_EXT
```
    Accepted by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetInteger64v.
    
    See Also:
    
    Constant Field Values
  - GL_MAX_GEOMETRY_TEXTURE_IMAGE_UNITS_EXT
```
public static final int GL_MAX_GEOMETRY_TEXTURE_IMAGE_UNITS_EXT
```
    Accepted by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetInteger64v.
    
    See Also:
    
    Constant Field Values
  - GL_MAX_GEOMETRY_ATOMIC_COUNTER_BUFFERS_EXT
```
public static final int GL_MAX_GEOMETRY_ATOMIC_COUNTER_BUFFERS_EXT
```
    Accepted by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetInteger64v.
    
    See Also:
    
    Constant Field Values
  - GL_MAX_GEOMETRY_ATOMIC_COUNTERS_EXT
```
public static final int GL_MAX_GEOMETRY_ATOMIC_COUNTERS_EXT
```
    Accepted by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetInteger64v.
    
    See Also:
    
    Constant Field Values
  - GL_MAX_GEOMETRY_IMAGE_UNIFORMS_EXT
```
public static final int GL_MAX_GEOMETRY_IMAGE_UNIFORMS_EXT
```
    Accepted by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetInteger64v.
    
    See Also:
    
    Constant Field Values
  - GL_MAX_GEOMETRY_SHADER_STORAGE_BLOCKS_EXT
```
public static final int GL_MAX_GEOMETRY_SHADER_STORAGE_BLOCKS_EXT
```
    Accepted by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetInteger64v.
    
    See Also:
    
    Constant Field Values
  - GL_FIRST_VERTEX_CONVENTION_EXT
```
public static final int GL_FIRST_VERTEX_CONVENTION_EXT
```
    Returned in the data parameter from a Get query with a pname of LAYER_PROVOKING_VERTEX_EXT.
    
    See Also:
    
    Constant Field Values
  - GL_LAST_VERTEX_CONVENTION_EXT
```
public static final int GL_LAST_VERTEX_CONVENTION_EXT
```
    Returned in the data parameter from a Get query with a pname of LAYER_PROVOKING_VERTEX_EXT.
    
    See Also:
    
    Constant Field Values
  - GL_UNDEFINED_VERTEX_EXT
```
public static final int GL_UNDEFINED_VERTEX_EXT
```
    Returned in the data parameter from a Get query with a pname of LAYER_PROVOKING_VERTEX_EXT.
    
    See Also:
    
    Constant Field Values
  - GL_PRIMITIVES_GENERATED_EXT
```
public static final int GL_PRIMITIVES_GENERATED_EXT
```
    Accepted by the target parameter of BeginQuery, EndQuery, GetQueryiv, and GetQueryObjectuiv.
    
    See Also:
    
    Constant Field Values
  - GL_LINES_ADJACENCY_EXT
```
public static final int GL_LINES_ADJACENCY_EXT
```
    Accepted by the mode parameter of DrawArrays, DrawElements, and other commands which draw primitives.
    
    See Also:
    
    Constant Field Values
  - GL_LINE_STRIP_ADJACENCY_EXT
```
public static final int GL_LINE_STRIP_ADJACENCY_EXT
```
    Accepted by the mode parameter of DrawArrays, DrawElements, and other commands which draw primitives.
    
    See Also:
    
    Constant Field Values
  - GL_TRIANGLES_ADJACENCY_EXT
```
public static final int GL_TRIANGLES_ADJACENCY_EXT
```
    Accepted by the mode parameter of DrawArrays, DrawElements, and other commands which draw primitives.
    
    See Also:
    
    Constant Field Values
  - GL_TRIANGLE_STRIP_ADJACENCY_EXT
```
public static final int GL_TRIANGLE_STRIP_ADJACENCY_EXT
```
    Accepted by the mode parameter of DrawArrays, DrawElements, and other commands which draw primitives.
    
    See Also:
    
    Constant Field Values
  - GL_FRAMEBUFFER_DEFAULT_LAYERS_EXT
```
public static final int GL_FRAMEBUFFER_DEFAULT_LAYERS_EXT
```
    Accepted by the pname parameter of FramebufferParameteri, and GetFramebufferParameteriv.
    
    See Also:
    
    Constant Field Values
  - GL_MAX_FRAMEBUFFER_LAYERS_EXT
```
public static final int GL_MAX_FRAMEBUFFER_LAYERS_EXT
```
    Accepted by the pname parameter of GetIntegerv, GetBooleanv, GetInteger64v, and GetFloatv.
    
    See Also:
    
    Constant Field Values
  - GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS_EXT
```
public static final int GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS_EXT
```
    Returned by CheckFramebufferStatus.
    
    See Also:
    
    Constant Field Values
  - GL_FRAMEBUFFER_ATTACHMENT_LAYERED_EXT
```
public static final int GL_FRAMEBUFFER_ATTACHMENT_LAYERED_EXT
```
    Accepted by the pname parameter of GetFramebufferAttachmentParameteriv.
    
    See Also:
    
    Constant Field Values
  - GL_REFERENCED_BY_GEOMETRY_SHADER_EXT
```
public static final int GL_REFERENCED_BY_GEOMETRY_SHADER_EXT
```
    Accepted by the props parameter of GetProgramResourceiv.
    
    See Also:
    
    Constant Field Values
- Method Detail
  - glFramebufferTextureEXT
```
public static void glFramebufferTextureEXT(int target,
                                           int attachment,
                                           int texture,
                                           int level)
```

Class EXTGeometryShader

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

GL_GEOMETRY_SHADER_EXT

GL_GEOMETRY_SHADER_BIT_EXT

GL_GEOMETRY_LINKED_VERTICES_OUT_EXT

GL_GEOMETRY_LINKED_INPUT_TYPE_EXT

GL_GEOMETRY_LINKED_OUTPUT_TYPE_EXT

GL_GEOMETRY_SHADER_INVOCATIONS_EXT

GL_LAYER_PROVOKING_VERTEX_EXT

GL_MAX_GEOMETRY_UNIFORM_COMPONENTS_EXT

GL_MAX_GEOMETRY_UNIFORM_BLOCKS_EXT

GL_MAX_COMBINED_GEOMETRY_UNIFORM_COMPONENTS_EXT

GL_MAX_GEOMETRY_INPUT_COMPONENTS_EXT

GL_MAX_GEOMETRY_OUTPUT_COMPONENTS_EXT

GL_MAX_GEOMETRY_OUTPUT_VERTICES_EXT

GL_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS_EXT

GL_MAX_GEOMETRY_SHADER_INVOCATIONS_EXT

GL_MAX_GEOMETRY_TEXTURE_IMAGE_UNITS_EXT

GL_MAX_GEOMETRY_ATOMIC_COUNTER_BUFFERS_EXT

GL_MAX_GEOMETRY_ATOMIC_COUNTERS_EXT

GL_MAX_GEOMETRY_IMAGE_UNIFORMS_EXT

GL_MAX_GEOMETRY_SHADER_STORAGE_BLOCKS_EXT

GL_FIRST_VERTEX_CONVENTION_EXT

GL_LAST_VERTEX_CONVENTION_EXT

GL_UNDEFINED_VERTEX_EXT

GL_PRIMITIVES_GENERATED_EXT

GL_LINES_ADJACENCY_EXT

GL_LINE_STRIP_ADJACENCY_EXT

GL_TRIANGLES_ADJACENCY_EXT

GL_TRIANGLE_STRIP_ADJACENCY_EXT

GL_FRAMEBUFFER_DEFAULT_LAYERS_EXT

GL_MAX_FRAMEBUFFER_LAYERS_EXT

GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS_EXT

GL_FRAMEBUFFER_ATTACHMENT_LAYERED_EXT

GL_REFERENCED_BY_GEOMETRY_SHADER_EXT

Method Detail

glFramebufferTextureEXT