Mesa (master): r600g: fix fp-fragment-position test.

[Dave Airlie]

Module: Mesa
Branch: master
Commit: ad202678fc4859b51a9198575a886707f57ad05b
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=ad202678fc4859b51a9198575a886707f57ad05b

Author: Dave Airlie <airlied at redhat.com>
Date:   Tue Aug 31 15:12:24 2010 +1000

r600g: fix fp-fragment-position test.

---

 src/gallium/drivers/r600/r600_shader.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/src/gallium/drivers/r600/r600_shader.c b/src/gallium/drivers/r600/r600_shader.c
index dae3781..d81308b 100644
--- a/src/gallium/drivers/r600/r600_shader.c
+++ b/src/gallium/drivers/r600/r600_shader.c
@@ -207,6 +207,7 @@ static int r600_pipe_shader_ps(struct pipe_context *ctx, struct r600_context_sta
 	if (have_pos) {
 		state->states[R600_PS_SHADER__SPI_PS_IN_CONTROL_0] |=  S_0286CC_POSITION_ENA(1) |
 		                                                       S_0286CC_BARYC_SAMPLE_CNTL(1);
+		state->states[R600_PS_SHADER__SPI_INPUT_Z] |= 1;
 	}
 	state->states[R600_PS_SHADER__SPI_PS_IN_CONTROL_1] = 0x00000000;
 	state->states[R600_PS_SHADER__SQ_PGM_RESOURCES_PS] = S_028868_NUM_GPRS(rshader->bc.ngpr) |