Returns parameters specific to color table target. When pname is set to GL_COLOR_TABLE_SCALE or GL_COLOR_TABLE_BIAS, glGetColorTableParameter returns the color table scale or bias parameters for the table specified by target. For these queries, target must be set to GL_COLOR_TABLE, GL_POST_CONVOLUTION_COLOR_TABLE, or GL_POST_COLOR_MATRIX_COLOR_TABLE and params points to an array of four elements, which receive the scale or bias factors for red, green, blue, and alpha, in that order. glGetColorTableParameter can also be used to retrieve the format and size parameters for a color table. For these queries, set target to either the color table target or the proxy color table target. The format and size parameters are set by glColorTable. The following table lists the format and size parameters that may be queried. For each symbolic constant listed below for pname, params must point to an array of the given length and receive the values indicated. ParameterNMeaningGL_COLOR_TABLE_FORMAT 1 Internal format (e.g., GL_RGBA ) GL_COLOR_TABLE_WIDTH 1 Number of elements in table GL_COLOR_TABLE_RED_SIZE 1 Size of red component, in bits GL_COLOR_TABLE_GREEN_SIZE 1 Size of green component GL_COLOR_TABLE_BLUE_SIZE 1 Size of blue component GL_COLOR_TABLE_ALPHA_SIZE 1 Size of alpha component GL_COLOR_TABLE_LUMINANCE_SIZE 1 Size of luminance component GL_COLOR_TABLE_INTENSITY_SIZE 1 Size of intensity component
glGetColorTableParameter is present only if ARB_imaging is returned when glGetString is called with an argument of GL_EXTENSIONS.
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glGetColorTableParameter: man2/glGetColorTableParameter.xml
Returns parameters specific to color table target. When pname is set to GL_COLOR_TABLE_SCALE or GL_COLOR_TABLE_BIAS, glGetColorTableParameter returns the color table scale or bias parameters for the table specified by target. For these queries, target must be set to GL_COLOR_TABLE, GL_POST_CONVOLUTION_COLOR_TABLE, or GL_POST_COLOR_MATRIX_COLOR_TABLE and params points to an array of four elements, which receive the scale or bias factors for red, green, blue, and alpha, in that order. glGetColorTableParameter can also be used to retrieve the format and size parameters for a color table. For these queries, set target to either the color table target or the proxy color table target. The format and size parameters are set by glColorTable. The following table lists the format and size parameters that may be queried. For each symbolic constant listed below for pname, params must point to an array of the given length and receive the values indicated. Parameter N Meaning GL_COLOR_TABLE_FORMAT 1 Internal format (e.g., GL_RGBA ) GL_COLOR_TABLE_WIDTH 1 Number of elements in table GL_COLOR_TABLE_RED_SIZE 1 Size of red component, in bits GL_COLOR_TABLE_GREEN_SIZE 1 Size of green component GL_COLOR_TABLE_BLUE_SIZE 1 Size of blue component GL_COLOR_TABLE_ALPHA_SIZE 1 Size of alpha component GL_COLOR_TABLE_LUMINANCE_SIZE 1 Size of luminance component GL_COLOR_TABLE_INTENSITY_SIZE 1 Size of intensity component
glGetColorTableParameter is present only if ARB_imaging is returned when glGetString is called with an argument of GL_EXTENSIONS.