14 Managing Shader Characteristics

14 Q3Shader_GetVBoundary

You can use the Q3Shader_GetVBoundary function to get the current boundary-handling mode for v values that are outside the range 0 to 1.

TQ3Status Q3Shader_GetVBoundary (
TQ3ShaderObject shader, 
TQ3ShaderUVBoundary *vBoundary);
shader A shader.
vBoundary On exit, a value that indicates the current method of handling v values that are outside the range 0 to 1. See "Boundary-Handling Methods" on page 14-17 for a description of the values that can be returned.

DESCRIPTION


The Q3Shader_GetVBoundary function returns, in the vBoundary parameter, the current method used by the shader specified by the shader parameter of handling v values that are outside the range 0 to 1. If Q3Shader_GetVBoundary completes successfully, the vBoundary parameter contains one of these values:

typedef enum TQ3ShaderUVBoundary {
 kQ3ShaderUVBoundaryWrap,
 kQ3ShaderUVBoundaryClamp
} TQ3ShaderUVBoundary;
DESCRIPTION

3D Graphics Programming with QuickDraw 3D - 17 OCT 1995

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