Mesa (master): virgl: force linear texturing support

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Module: Mesa
Branch: master
Commit: f856f5019418909d6d6cf8122c23551af165788e
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=f856f5019418909d6d6cf8122c23551af165788e

Author: Erik Faye-Lund <erik.faye-lund at collabora.com>
Date:   Mon Dec 10 14:57:32 2018 +0000

virgl: force linear texturing support

When I made sure that half-float texture-filtering was required for ES3,
I didn't realize that virgl doesn't report support for this correctly.
This regressed the GLES version available on top of several drivers,
including i965 from 3.2 to 2.0.

This is going to need protocol changes to fix properly, so let's just
restore the previous behavior by enabling floating-point filtering
unconditionally for now.

Signed-off-by: Erik Faye-Lund <erik.faye-lund at collabora.com>
Fixes: fcf9fcee3c8 "mesa/main: do not require float-texture filtering for es3"
Reviewed-by: Gurchetan Singh <gurchetansingh at chromium.org>

---

 src/gallium/drivers/virgl/virgl_screen.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/gallium/drivers/virgl/virgl_screen.c b/src/gallium/drivers/virgl/virgl_screen.c
index 3d6424e39f..b32c061491 100644
--- a/src/gallium/drivers/virgl/virgl_screen.c
+++ b/src/gallium/drivers/virgl/virgl_screen.c
@@ -255,6 +255,9 @@ virgl_get_param(struct pipe_screen *screen, enum pipe_cap param)
       return vscreen->caps.caps.v2.max_combined_atomic_counters;
    case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTER_BUFFERS:
       return vscreen->caps.caps.v2.max_combined_atomic_counter_buffers;
+   case PIPE_CAP_TEXTURE_FLOAT_LINEAR:
+   case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
+      return 1; /* TODO: need to introduce a hw-cap for this */
    case PIPE_CAP_TEXTURE_GATHER_SM5:
    case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
    case PIPE_CAP_FAKE_SW_MSAA:
@@ -267,8 +270,6 @@ virgl_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
    case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
    case PIPE_CAP_DEVICE_RESET_STATUS_QUERY:
-   case PIPE_CAP_TEXTURE_FLOAT_LINEAR:
-   case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
    case PIPE_CAP_DEPTH_BOUNDS_TEST:
    case PIPE_CAP_SHAREABLE_SHADERS:
    case PIPE_CAP_CLEAR_TEXTURE: