Name
arbfp1 - OpenGL fragment profile for multi-vendor ARB_fragment_program extension
Synopsis
arbfp1Description
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
http://www.opengl.org/registry/specs/ARB/fragment_program.txtProfile Options
- NumTemps=n
- Number of temporaries to use, 32 by default.
- NumInstructionSlots=n
- Maximum allowable (static) instructions. Not an issue for NVIDIA GPUs.
- NumTexInstructionSlots=n
- Maximum number of texture instructions to generate. Not an issue for NVIDIA GPUs, but important for ATI GPUs (set it to 32).
- NumMathInstructionSlots=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.
- pixel_center_integer=b
- Boolean to enable integer pixel centers.
- origin_upper_left=b
- Boolean to enable upper left pixel origin.
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