Module: Mesa
Branch: master
Commit: 689c3c7d40ddee6a7c48a3885b241871d6302fe7
URL:    
http://cgit.freedesktop.org/mesa/mesa/commit/?id=689c3c7d40ddee6a7c48a3885b241871d6302fe7

Author: Neil Roberts <[email protected]>
Date:   Tue Dec  4 18:32:15 2018 +0100

freedreno/ir3: Use output type size to set OUTPUT_REG_HALF_PRECISION

Previously the A5XX_SP_FS_OUTPUT_REG_HALF_PRECISION was set depending
on whether half_precision was set in the shader key. With support for
mediump precision, it is possible to have different outputs use
different precisions. That means we can’t have a global shader state
to specify it. Instead it now tries to copy the half-float-ness
from the nir_variable for the output into the ir3_shader_variant. This
is then used to decide whether to set half-precision for each output.

The a6xx version is copied from the a5xx code but it has not been
tested.

v2. [Hyunjun Ko ([email protected])] There's the half flag recently
added, which represents precision based on IR3_REG_HALF. Now use this
flag to avoid duplication.

Signed-off-by: Rob Clark <[email protected]>

---

 src/gallium/drivers/freedreno/a5xx/fd5_program.c | 3 +--
 src/gallium/drivers/freedreno/a6xx/fd6_program.c | 5 +----
 2 files changed, 2 insertions(+), 6 deletions(-)

diff --git a/src/gallium/drivers/freedreno/a5xx/fd5_program.c 
b/src/gallium/drivers/freedreno/a5xx/fd5_program.c
index 918c6585ac4..e20bb2f6fc9 100644
--- a/src/gallium/drivers/freedreno/a5xx/fd5_program.c
+++ b/src/gallium/drivers/freedreno/a5xx/fd5_program.c
@@ -606,8 +606,7 @@ fd5_program_emit(struct fd_context *ctx, struct 
fd_ringbuffer *ring,
        OUT_PKT4(ring, REG_A5XX_SP_FS_OUTPUT_REG(0), 8);
        for (i = 0; i < 8; i++) {
                OUT_RING(ring, A5XX_SP_FS_OUTPUT_REG_REGID(color_regid[i]) |
-                               COND(emit->key.half_precision,
-                                       A5XX_SP_FS_OUTPUT_REG_HALF_PRECISION));
+                               COND(s[FS].v->outputs[i].half, 
A5XX_SP_FS_OUTPUT_REG_HALF_PRECISION));
        }
 
 
diff --git a/src/gallium/drivers/freedreno/a6xx/fd6_program.c 
b/src/gallium/drivers/freedreno/a6xx/fd6_program.c
index b90ad2e06e5..b73d2031ab3 100644
--- a/src/gallium/drivers/freedreno/a6xx/fd6_program.c
+++ b/src/gallium/drivers/freedreno/a6xx/fd6_program.c
@@ -626,11 +626,8 @@ setup_stateobj(struct fd_ringbuffer *ring, struct 
fd6_program_state *state,
 
        OUT_PKT4(ring, REG_A6XX_SP_FS_OUTPUT_REG(0), 8);
        for (i = 0; i < 8; i++) {
-               // TODO we could have a mix of half and full precision outputs,
-               // we really need to figure out half-precision from IR3_REG_HALF
                OUT_RING(ring, A6XX_SP_FS_OUTPUT_REG_REGID(color_regid[i]) |
-                               COND(false,
-                                       A6XX_SP_FS_OUTPUT_REG_HALF_PRECISION));
+                               COND(s[FS].v->outputs[i].half, 
A6XX_SP_FS_OUTPUT_REG_HALF_PRECISION));
        }
 
        OUT_PKT4(ring, REG_A6XX_VPC_PACK, 1);

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