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gs_5_0.3Cg

NAME

gs_5_0 - Translation profile to DirectX 11's High Level Shader Language for geometry shaders.

SYNOPSIS

   gs_5_0
 
 
 

DESCRIPTION

This Direct3D profile translates Cg into DirectX 11's High Level Shader Language (HLSL11) for geometry shaders.

The compiler output for this profile conforms to the textual high-level language defined by DirectX 11's High Level Shading Language.

The limitations of the gs_5_0 profile depend on what HLSL profile to which the translated HLSL code is compiled.

3D API DEPENDENCIES

Requires Direct3D 11 support.

   http://msdn.microsoft.com/en-us/library/ff471356.aspx
 
 
 

PROFILE OPTIONS

-po pad16
  This will add padding variables to the cbuffer declarations to match
  the 16 byte padding the GP4 OpenGL profiles use. This makes sure
  each variable in the cbuffer uses an entire float4 constant instead
  of the tight packing HLSL11 normally uses.

DATA TYPES

In general, the Cg data types translate to the HLSL11 data types with the same name.

float, half, fixed

These numeric data types all correspond to 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.

int

This integral data type operates like an integer over the -2^24 to 2^24 range. The result of int by int division is an integer (rounding down) to match C.

SEMANTICS

INPUT SEMANTICS

The varying input semantics in the gs_5_0 profile correspond to the respectively named varying output semantics of the vs_5_0 profile.

   Binding Semantics Name           Corresponding Data
 
 
 

   POSITION                         Object-space position (SV_Position)
 
 
 

   NORMAL                           Object-space normal
 
 
 

   COLOR                            Primary color (float4) (SV_Target)
   COLOR0
   DIFFUSE
 
 
 

   COLOR1                           Secondary color (float4)
   SPECULAR
 
 
 

   FOGCOORD                         Fog coordinate
 
 
 

   TEXCOORD#                        Texture coordinate set #
 
 
 

UNIFORM INPUT SEMANTICS

OUTPUT SEMANTICS

   Binding Semantics Name         Corresponding Data
 
 
 

   POSITION                       Clip-space position (SV_Position)
   HPOS
 
 
 

   COLOR                          Front primary color (SV_Target)
   COLOR0
   COL0
   COL
 
 
 

   COLOR1                         Front secondary color
   COL1
 
 
 

   TEXCOORD#                      Texture coordinate set #
   TEX#                           TEX# is translated to TEXCOORD#
 
 
 

   FOGC                           Fog coordinate
   FOG
 
 
 

   PSIZE                          Point size
   PSIZ
 
 
 

STANDARD LIBRARY ISSUES

This profile is limited to standard library support available in HLSL11 for vertex shaders. In general, the Cg and HLSL11 standard libraries are very similar.

SEE ALSO

ps_5_0, vs_5_0, hs_5_0, ds_5_0