fp30 - OpenGL fragment profile for NV3x (GeForce FX, Quadro FX, etc.) fp30 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. 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 How many instructions the compiler should assume it can use. How many temporaries the compiler should assume it can use. 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. 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. 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.

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 Functions that compute partial derivatives are supported. vp30