IR builder already offers a lot of swizzling functions, such as swizzle_xxxx, swizzle_z, or swizzle_for_size.
The swizzle_xxxx style is convenient if you statically know which components you want. swizzle_for_size is great if you want to select the first few components. However, if you want to select components based on, say, a loop counter, none of those are sufficient. IR builder actually already had support for arbitrary swizzling, but didn't expose it. This patch exposes that API. Signed-off-by: Kenneth Graunke <kenn...@whitecape.org> --- src/glsl/ir_builder.h | 1 + 1 file changed, 1 insertion(+) diff --git a/src/glsl/ir_builder.h b/src/glsl/ir_builder.h index 6d32d7a..091cf40 100644 --- a/src/glsl/ir_builder.h +++ b/src/glsl/ir_builder.h @@ -171,6 +171,7 @@ ir_expression *u2i(operand a); ir_expression *b2i(operand a); ir_expression *i2b(operand a); +ir_swizzle *swizzle(operand a, int swizzle, int components); /** * Swizzle away later components, but preserve the ordering. */ -- 1.8.3.4 _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
