Package org.lwjgl.opengles
Class EXTShaderFramebufferFetchNonCoherent
java.lang.Object
org.lwjgl.opengles.EXTShaderFramebufferFetchNonCoherent
Native bindings to the EXT_shader_framebuffer_fetch_non_coherent extension.
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Method Summary
Modifier and TypeMethodDescriptionstatic void
Specifies a boundary between passes when reading existing framebuffer data from fragment shaders via thegl_LastFragData
built-in variable.
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Method Details
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glFramebufferFetchBarrierEXT
public static void glFramebufferFetchBarrierEXT()Specifies a boundary between passes when reading existing framebuffer data from fragment shaders via thegl_LastFragData
built-in variable. Previous framebuffer object writes regardless of the mechanism (including clears, blits and primitive rendering) are guaranteed to be visible to subsequent fragment shader invocations that read from the framebuffer onceFramebufferFetchBarrierEXT
is executed.If
EXT_shader_framebuffer_fetch
is also supported: Because the implementation guarantees coherency of framebuffer reads and writes for color outputs not explicitly marked with the noncoherent layout qualifier, calling theFramebufferFetchBarrierEXT
command is not required unless the application wishes to manage memory ordering of framebuffer reads and writes explicitly, which may provide better performance on some implementations in cases where rendering can be split into multiple passes with non-self-overlapping geometry.
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