[Mesa-dev] [PATCH v2 10/10] etnaviv: advertise supported dmabuf modifiers

[Lucas Stach]

Simply advertise all supported modifiers, independent of the format.
Special formats, like compressed, which don't support all those modifiers
are already culled from the dmabuf format list, as we don't support
the render target binding for them.

Signed-off-by: Lucas Stach <l.stach at pengutronix.de>
---
v2: don't advertise split tiled formats on single pipe/buffer GPUs
---
 src/gallium/drivers/etnaviv/etnaviv_screen.c | 44 ++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/src/gallium/drivers/etnaviv/etnaviv_screen.c b/src/gallium/drivers/etnaviv/etnaviv_screen.c
index d5210347a521..6868281b2e69 100644
--- a/src/gallium/drivers/etnaviv/etnaviv_screen.c
+++ b/src/gallium/drivers/etnaviv/etnaviv_screen.c
@@ -45,6 +45,8 @@
 
 #include "state_tracker/drm_driver.h"
 
+#include <drm_fourcc.h>
+
 #define ETNA_DRM_VERSION(major, minor) ((major) << 16 | (minor))
 #define ETNA_DRM_VERSION_FENCE_FD      ETNA_DRM_VERSION(1, 1)
 
@@ -560,6 +562,47 @@ etna_screen_is_format_supported(struct pipe_screen *pscreen,
    return usage == allowed;
 }
 
+const uint64_t supported_modifiers[] = {
+   DRM_FORMAT_MOD_LINEAR,
+   DRM_FORMAT_MOD_VIVANTE_TILED,
+   DRM_FORMAT_MOD_VIVANTE_SUPER_TILED,
+   DRM_FORMAT_MOD_VIVANTE_SPLIT_TILED,
+   DRM_FORMAT_MOD_VIVANTE_SPLIT_SUPER_TILED,
+};
+
+static void
+etna_screen_query_dmabuf_modifiers(struct pipe_screen *pscreen,
+                                   enum pipe_format format, int max,
+                                   uint64_t *modifiers,
+                                   unsigned int *external_only, int *count)
+{
+   struct etna_screen *screen = etna_screen(pscreen);
+   int i, num_modifiers = 0;
+
+   if (max > ARRAY_SIZE(supported_modifiers))
+      max = ARRAY_SIZE(supported_modifiers);
+
+   if (!max) {
+      modifiers = NULL;
+      max = ARRAY_SIZE(supported_modifiers);
+   }
+
+   for (i = 0; num_modifiers < max; i++) {
+      /* don't advertise split tiled formats on single pipe/buffer GPUs */
+      if ((screen->specs.pixel_pipes == 1 || screen->specs.single_buffer) &&
+          i >= 3)
+         break;
+
+      if (modifiers)
+         modifiers[num_modifiers] = supported_modifiers[i];
+      if (external_only)
+         external_only[num_modifiers] = 0;
+      num_modifiers++;
+   }
+
+   *count = num_modifiers;
+}
+
 static boolean
 etna_get_specs(struct etna_screen *screen)
 {
@@ -854,6 +897,7 @@ etna_screen_create(struct etna_device *dev, struct etna_gpu *gpu,
    pscreen->get_timestamp = etna_screen_get_timestamp;
    pscreen->context_create = etna_context_create;
    pscreen->is_format_supported = etna_screen_is_format_supported;
+   pscreen->query_dmabuf_modifiers = etna_screen_query_dmabuf_modifiers;
 
    etna_fence_screen_init(pscreen);
    etna_query_screen_init(pscreen);
-- 
2.11.0