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arbfp1

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arbfp1: OpenGL fragment profile for multi-vendor ARB_fragment_program extension

NAME

arbfp1 - OpenGL fragment profile for multi-vendor ARB_fragment_program extension

SYNOPSIS

arbfp1
DESCRIPTION
This OpenGL profile corresponds to the per-fragment functionality introduced by GeForce FX and other DirectX 9 GPUs. This profile is supported by any OpenGL implementation that conformantly implements ARB_fragment_program. The compiler output for this profile conforms to the assembly format defined by ARB_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 multi-vendor ARB_fragment_program extension. This extension is supported by GeForce FX and later GPUS. ATI GPUs also support this extension. OpenGL Extension Specifications //www.opengl.org/registry/specs/ARB/fragment_program.txt

PROFILE OPTIONS

NumTemps=n Number of temporaries to use (from 12 to 32). MaxInstructionSlots=n Maximum allowable (static) instructions. Not an issue for NVIDIA GPUs. NoDependentReadLimit=b Boolean for whether a read limit exists. NumTexInstructions=n Maximum number of texture instructions to generate. Not an issue for NVIDIA GPUs, but important for ATI GPUs (set it to 32). NumMathInstructions=n Maximum number of math instructions to generate. Not an issue for NVIDIA GPUs, but important for ATI GPUs (set it to 64). MaxTexIndirections=n Maximum number of texture indirections. Not an issue for NVIDIA GPUs, but important for ATI GPUs (set it to 4). ATI_draw_buffers When multiple draw buffers are used, use the ATI_draw_buffers syntax so the generated code says "OPTION ATI_draw_buffers". The default, if this option is not specified, is to use ARB_draw_buffers. ARB_draw_buffers When multiple draw buffers are used, use the ARB_draw_buffers syntax so the generated code says "OPTION ARB_draw_buffers". This option is the default. MaxDrawBuffers=n Maximum draw buffers for use with ARB_draw_buffers. Set to 1 for NV3x GPUs. Use up to 4 for NV4x or ATI GPUs. MaxLocalParams=n Maximum allowable local parameters.

DATA TYPES

to-be-written

SEMANTICS

VARYING INPUT SEMANTICS to-be-written UNIFORM INPUT SEMANTICS to-be-written OUTPUT SEMANTICS to-be-written

STANDARD LIBRARY ISSUES

to-be-written
SEE ALSO
arbvp1 ARBFP1(3)
 
 
 

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