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Lines Matching refs:shift

194  * Apply color index shift and offset to an array of pixels.
200    GLint shift = ctx->Pixel.IndexShift;
203    if (shift > 0) {
205          indexes[i] = (indexes[i] << shift) + offset;
208    else if (shift < 0) {
209       shift = -shift;
211          indexes[i] = (indexes[i] >> shift) + offset;
224  * Apply color index shift, offset and table lookup to an array
247  * Apply stencil index shift, offset and table lookup to an array
256       GLint shift = ctx->Pixel.IndexShift;
258       if (shift > 0) {
260             stencil[i] = (stencil[i] << shift) + offset;
263       else if (shift < 0) {
264          shift = -shift;
266             stencil[i] = (stencil[i] >> shift) + offset;