Package org.lwjgl.opengl

Class EXTGeometryShader4

java.lang.Object
org.lwjgl.opengl.EXTGeometryShader4
public class EXTGeometryShader4 extends Object
Native bindings to the EXT_geometry_shader4 extension.

EXT_geometry_shader4 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, flat shading 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 OpenGL primitive specified by the application.

Furthermore, EXT_geometry_shader4 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 Begin() time, if a primitive mode of TRIANGLES is specified.

  • Field Details

    • GL_GEOMETRY_SHADER_EXT

      public static final int GL_GEOMETRY_SHADER_EXT
      Accepted by the type parameter of CreateShader and returned by the params parameter of GetShaderiv.
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    • GL_GEOMETRY_VERTICES_OUT_EXT

      public static final int GL_GEOMETRY_VERTICES_OUT_EXT
      Accepted by the pname parameter of ProgramParameteriEXT and GetProgramiv.
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    • GL_GEOMETRY_INPUT_TYPE_EXT

      public static final int GL_GEOMETRY_INPUT_TYPE_EXT
      Accepted by the pname parameter of ProgramParameteriEXT and GetProgramiv.
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    • GL_GEOMETRY_OUTPUT_TYPE_EXT

      public static final int GL_GEOMETRY_OUTPUT_TYPE_EXT
      Accepted by the pname parameter of ProgramParameteriEXT and GetProgramiv.
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    • 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 GetDoublev.
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    • GL_MAX_GEOMETRY_VARYING_COMPONENTS_EXT

      public static final int GL_MAX_GEOMETRY_VARYING_COMPONENTS_EXT
      Accepted by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetDoublev.
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    • GL_MAX_VERTEX_VARYING_COMPONENTS_EXT

      public static final int GL_MAX_VERTEX_VARYING_COMPONENTS_EXT
      Accepted by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetDoublev.
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    • GL_MAX_VARYING_COMPONENTS_EXT

      public static final int GL_MAX_VARYING_COMPONENTS_EXT
      Accepted by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetDoublev.
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    • 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 GetDoublev.
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    • 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 GetDoublev.
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    • 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 GetDoublev.
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    • GL_LINES_ADJACENCY_EXT

      public static final int GL_LINES_ADJACENCY_EXT
      Accepted by the mode parameter of Begin, DrawArrays, MultiDrawArrays, DrawElements, MultiDrawElements, and DrawRangeElements.
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    • GL_LINE_STRIP_ADJACENCY_EXT

      public static final int GL_LINE_STRIP_ADJACENCY_EXT
      Accepted by the mode parameter of Begin, DrawArrays, MultiDrawArrays, DrawElements, MultiDrawElements, and DrawRangeElements.
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    • GL_TRIANGLES_ADJACENCY_EXT

      public static final int GL_TRIANGLES_ADJACENCY_EXT
      Accepted by the mode parameter of Begin, DrawArrays, MultiDrawArrays, DrawElements, MultiDrawElements, and DrawRangeElements.
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    • GL_TRIANGLE_STRIP_ADJACENCY_EXT

      public static final int GL_TRIANGLE_STRIP_ADJACENCY_EXT
      Accepted by the mode parameter of Begin, DrawArrays, MultiDrawArrays, DrawElements, MultiDrawElements, and DrawRangeElements.
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    • GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS_EXT

      public static final int GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS_EXT
      Returned by CheckFramebufferStatusEXT.
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    • GL_FRAMEBUFFER_INCOMPLETE_LAYER_COUNT_EXT

      public static final int GL_FRAMEBUFFER_INCOMPLETE_LAYER_COUNT_EXT
      Returned by CheckFramebufferStatusEXT.
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    • GL_FRAMEBUFFER_ATTACHMENT_LAYERED_EXT

      public static final int GL_FRAMEBUFFER_ATTACHMENT_LAYERED_EXT
      Accepted by the pname parameter of GetFramebufferAttachment- ParameterivEXT.
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    • GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LAYER_EXT

      public static final int GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LAYER_EXT
      Accepted by the pname parameter of GetFramebufferAttachment- ParameterivEXT.
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    • GL_PROGRAM_POINT_SIZE_EXT

      public static final int GL_PROGRAM_POINT_SIZE_EXT
      Accepted by the cap parameter of Enable, Disable, and IsEnabled, and by the pname parameter of GetIntegerv, GetFloatv, GetDoublev, and GetBooleanv.
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  • Method Details

    • glProgramParameteriEXT

      public static void glProgramParameteriEXT(int program, int pname, int value)

    • glFramebufferTextureEXT

      public static void glFramebufferTextureEXT(int target, int attachment, int texture, int level)

    • glFramebufferTextureLayerEXT

      public static void glFramebufferTextureLayerEXT(int target, int attachment, int texture, int level, int layer)

    • glFramebufferTextureFaceEXT

      public static void glFramebufferTextureFaceEXT(int target, int attachment, int texture, int level, int face)