Mesa (master): panfrost: Enable ARB_texture_buffer_object

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Module: Mesa
Branch: master
Commit: 5f7bafa316f60ff79b9839cf88142b33f330a8e7
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=5f7bafa316f60ff79b9839cf88142b33f330a8e7

Author: Icecream95 <ixn at disroot.org>
Date:   Sun Jan  3 15:21:57 2021 +1300

panfrost: Enable ARB_texture_buffer_object

Tested with the arb_texture_buffer_object and arb_texture_buffer_range
piglit tests.

Exposes OpenGL 3.1 by default on T760+

    $ PAN_MESA_DEBUG= glxinfo | grep "GL version"
    OpenGL version string: 3.1 Mesa 21.0.0-devel

Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig at collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon at collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8300>

---

 src/gallium/drivers/panfrost/pan_screen.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/gallium/drivers/panfrost/pan_screen.c b/src/gallium/drivers/panfrost/pan_screen.c
index e7fd4792eda..1bf78f39518 100644
--- a/src/gallium/drivers/panfrost/pan_screen.c
+++ b/src/gallium/drivers/panfrost/pan_screen.c
@@ -158,6 +158,8 @@ panfrost_get_param(struct pipe_screen *screen, enum pipe_cap param)
         case PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS:
         case PIPE_CAP_TGSI_ARRAY_COMPONENTS:
         case PIPE_CAP_CS_DERIVED_SYSTEM_VALUES_SUPPORTED:
+        case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
+        case PIPE_CAP_TEXTURE_BUFFER_SAMPLER:
                 return 1;
 
         case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
@@ -186,10 +188,13 @@ panfrost_get_param(struct pipe_screen *screen, enum pipe_cap param)
         case PIPE_CAP_CUBE_MAP_ARRAY:
         case PIPE_CAP_COMPUTE:
                 return is_deqp;
+
         case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
-                return is_deqp ? 65536 : 0;
+                return 65536;
+
+        case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
+                return 16;
 
-        case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
         case PIPE_CAP_QUERY_TIMESTAMP:
                 return is_gl3;