From 426fd535d9e2812c52dd709f8e5532bae501b3f6 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Tue, 6 Jan 2015 11:30:19 -0800 Subject: [PATCH] vc4: Fix scaling W projection of the Z coordinate when there's a Z offset. Fixes piglit glsl-fs-fragcoord-zw-perspective, es3conform gl_FragCoord_z_frag, and the rest of the piglit glsl 1.10 interpolation tests. --- src/gallium/drivers/vc4/vc4_program.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/src/gallium/drivers/vc4/vc4_program.c b/src/gallium/drivers/vc4/vc4_program.c index 5a5a5e34bc0..bba02ca93f2 100644 --- a/src/gallium/drivers/vc4/vc4_program.c +++ b/src/gallium/drivers/vc4/vc4_program.c @@ -1903,11 +1903,11 @@ emit_zs_write(struct vc4_compile *c, struct qreg rcp_w) struct qreg zscale = add_uniform(c, QUNIFORM_VIEWPORT_Z_SCALE, 0); struct qreg zoffset = add_uniform(c, QUNIFORM_VIEWPORT_Z_OFFSET, 0); - qir_VPM_WRITE(c, qir_FMUL(c, qir_FADD(c, qir_FMUL(c, + qir_VPM_WRITE(c, qir_FADD(c, qir_FMUL(c, qir_FMUL(c, c->outputs[c->output_position_index + 2], zscale), - zoffset), - rcp_w)); + rcp_w), + zoffset)); } static void -- 2.30.2