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glGetTexEnvfv, glGetTexEnviv: return texture environment parameters.

C Specification | Parameters | Description | Notes | Errors | See Also

[Up] C Specification

void glGetTexEnvfv(
    GLenum	 target,
    GLenum	 pname,
    GLfloat	 *params)
void glGetTexEnviv(
    GLenum	 target,
    GLenum	 pname,
    GLint	 *params)

[Up] Parameters

Specifies a texture environment. Must be GL_TEXTURE_ENV.
Specifies the symbolic name of a texture environment parameter. Accepted values are GL_TEXTURE_ENV_MODE GL_TEXTURE_ENV_COLOR and GL_TEXTURE_LIGHTING_MODE_HP.
Returns the requested data.

[Up] Description

glGetTexEnv returns in params selected values of a texture environment that was specified with glTexEnv. target specifies a texture environment. Currently, only one texture environment is defined and supported: GL_TEXTURE_ENV.

pname names a specific texture environment parameter, as follows:

params returns the single-valued texture environment mode, a symbolic constant. The initial value is GL_MODULATE.
params returns four integer or floating-point values that are the texture environment color. Integer values, when requested, are linearly mapped from the internal floating-point representation such that 1.0 maps to the most positive representable integer, and -1.0 maps to the most negative representable integer. The initial value is (0, 0, 0, 0).
params returns the single-valued texture lighting mode, a symbolic constant.

[Up] Notes

If an error is generated, no change is made to the contents of params.

GL_TEXTURE_LIGHTING_MODE_HP is only supported if the GL_HP_texture_lighting extension is supported.

[Up] Errors

[Up] See Also


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