Class APPLETexturePackedFloat
- java.lang.Object
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- org.lwjgl.opengles.APPLETexturePackedFloat
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public final class APPLETexturePackedFloat extends java.lang.Object
Native bindings to the APPLE_texture_packed_float extension.This extension adds two new 3-component floating-point texture formats that fit within a single 32-bit word called R11F_G11F_B10F and RGB9_E5
The first RGB format, R11F_G11F_B10F, stores 5 bits of biased exponent per component in the same manner as 16-bit floating-point formats, but rather than 10 mantissa bits, the red, green, and blue components have 6, 6, and 5 bits respectively. Each mantissa is assumed to have an implied leading one except in the denorm exponent case. There is no sign bit so only non-negative values can be represented. Positive infinity, positivedenorms, and positive NaN values are representable. The value of the fourth component returned by a texture fetch is always 1.0.
The second RGB format, RGB9_E5, stores a single 5-bit exponent (biased up by 15) and three 9-bit mantissas for each respective component. There is no sign bit so all three components must be non-negative. The fractional mantissas are stored without an implied 1 to the left of the decimal point. Neither infinity nor not-a-number (NaN) are representable in this shared exponent format.
Requires
GLES 2.0
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Field Summary
Fields Modifier and Type Field Description static int
GL_R11F_G11F_B10F_APPLE
GL_RGB9_E5_APPLEAccepted by theinternalformat
parameter of TexStorage2DEXT.static int
GL_UNSIGNED_INT_10F_11F_11F_REV_APPLE
GL_UNSIGNED_INT_5_9_9_9_REV_APPLEAccepted by thetype
parameter of TexImage2D and TexSubImage2D.
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Field Detail
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GL_UNSIGNED_INT_10F_11F_11F_REV_APPLE, GL_UNSIGNED_INT_5_9_9_9_REV_APPLE
Accepted by thetype
parameter of TexImage2D and TexSubImage2D.
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GL_R11F_G11F_B10F_APPLE, GL_RGB9_E5_APPLE
Accepted by theinternalformat
parameter of TexStorage2DEXT.
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