swrast: Remove _swrast_read_index_span
After all the recent color-index rendering removal, _swrast_read_index_span is no longer used anywhere. Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
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@@ -196,10 +196,6 @@ extern void
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_swrast_read_rgba_span(GLcontext *ctx, struct gl_renderbuffer *rb,
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GLuint n, GLint x, GLint y, GLenum type, GLvoid *rgba);
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extern void
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_swrast_read_index_span( GLcontext *ctx, struct gl_renderbuffer *rb,
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GLuint n, GLint x, GLint y, GLuint indx[] );
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extern void
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_swrast_get_values(GLcontext *ctx, struct gl_renderbuffer *rb,
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GLuint count, const GLint x[], const GLint y[],
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