fp30.3Cg

Langue: en

Version: 356117 (ubuntu - 24/10/10)

Section: 3 (Bibliothèques de fonctions)

Sommaire

NAME

fp30 - OpenGL fragment profile for NV3x (GeForce FX, Quadro FX, etc.)

SYNOPSIS

   fp30

DESCRIPTION

This OpenGL profile corresponds to the per-fragment functionality introduced by the GeForce FX and Quadro FX line of NVIDIA GPUs.

The compiler output for this profile conforms to the assembly format defined by NV_fragment_program.

Data-dependent loops are not allowed; all loops must be unrollable.

Conditional expressions are supported without branching so both conditions must be evaluated.

Relative indexing of uniform arrays is not supported; use texture accesses instead.

3D API DEPENDENCIES

Requires OpenGL support for the NV_fragment_program extension. These extensions were introduced by the GeForce FX and Quadro FX GPUs.

OpenGL Extension Specifications

  http://www.opengl.org/registry/specs/NV/fragment_program.txt

PROFILE OPTIONS


NumInstructionSlots=val
How many instructions the compiler should assume it can use.
NumTemps=val
How many temporaries the compiler should assume it can use.

DATA TYPES


fixed
The fixed data type corresponds to a native signed fixed-point integers with the range [-2.0,+2.0), sometimes called fx12. This type provides 10 fractional bits of precision.
half
The half data type corresponds to a floating-point encoding with a sign bit, 10 mantissa bits, and 5 exponent bits (biased by 16), sometimes called s10e5.
float
The float data type corresponds to a standard IEEE 754 single-precision floating-point encoding with a sign bit, 23 mantissa bits, and 8 exponent bits (biased by 128), sometimes called s10e5.

SEMANTICS


VARYING INPUT SEMANTICS

The varying input semantics in the fp30 profile correspond to the respectively named varying output semantics of the vp30 profile.

   Binding Semantics Name           Corresponding Data
 
 
 

   COLOR                            Input primary color
   COLOR0
   COL
   COL0
 
 
 

   COLOR1                           Input secondary color
   COL1
 
 
 

   TEX0                             Input texture coordinate sets 0
   TEXCOORD0
 
 
 

   TEX1                             Input texture coordinate sets 1
   TEXCOORD1
 
 
 

   TEX2                             Input texture coordinate sets 2
   TEXCOORD2
 
 
 

   TEX3                             Input texture coordinate sets 3
   TEXCOORD3
 
 
 

   TEX4                             Input texture coordinate sets 4
   TEXCOORD4
 
 
 

   TEX5                             Input texture coordinate sets 5
   TEXCOORD5
 
 
 

   TEX6                             Input texture coordinate sets 6
   TEXCOORD6
 
 
 

   TEX7                             Input texture coordinate sets 7
   TEXCOORD7
 
 
 

   FOGP                             Input fog color (XYZ) and factor (W)
   FOG

UNIFORM INPUT SEMANTICS

Sixteen texture units are supported:

   Binding Semantic Name            Corresponding Data
 
 
 

   TEXUNIT0                         Texture unit 0
   TEXUNIT1                         Texture unit 1
   ...
   TEXUNIT15                        Texture unit 15

OUTPUT SEMANTICS

   COLOR                            Output color (float4)
   COLOR0
   COL0
   COL
 
 
 

   DEPTH                            Output depth (float)
   DEPR

STANDARD LIBRARY ISSUES

Functions that compute partial derivatives are supported.

SEE ALSO

vp30