[Mesa-dev] [PATCH v3] gallium: introduce dmabuf format and modifier querying

Varad Gautam varadgautam at gmail.com
Wed Apr 26 12:19:51 UTC 2017


allows drivers to be queried for supported formats and format
modifiers for EGL_EXT_image_dma_buf_import_modifiers. drivers that
implement format/modifier queries must advertise these under
PIPE_CAP_QUERY_DMABUF_ATTRIBS.

v2: rebase to master.
v3: drivers must return false on query failure.

Signed-off-by: Varad Gautam <varad.gautam at collabora.com>
---
 src/gallium/docs/source/screen.rst               |  2 ++
 src/gallium/drivers/freedreno/freedreno_screen.c |  1 +
 src/gallium/drivers/i915/i915_screen.c           |  1 +
 src/gallium/drivers/llvmpipe/lp_screen.c         |  1 +
 src/gallium/drivers/nouveau/nv30/nv30_screen.c   |  1 +
 src/gallium/drivers/nouveau/nv50/nv50_screen.c   |  1 +
 src/gallium/drivers/nouveau/nvc0/nvc0_screen.c   |  1 +
 src/gallium/drivers/r300/r300_screen.c           |  1 +
 src/gallium/drivers/r600/r600_pipe.c             |  1 +
 src/gallium/drivers/radeonsi/si_pipe.c           |  1 +
 src/gallium/drivers/softpipe/sp_screen.c         |  1 +
 src/gallium/drivers/svga/svga_screen.c           |  1 +
 src/gallium/drivers/swr/swr_screen.cpp           |  1 +
 src/gallium/drivers/vc4/vc4_screen.c             |  1 +
 src/gallium/drivers/virgl/virgl_screen.c         |  1 +
 src/gallium/include/pipe/p_defines.h             |  1 +
 src/gallium/include/pipe/p_screen.h              | 21 +++++++++++++++++++++
 17 files changed, 38 insertions(+)

diff --git a/src/gallium/docs/source/screen.rst b/src/gallium/docs/source/screen.rst
index bb2803a..c723c75 100644
--- a/src/gallium/docs/source/screen.rst
+++ b/src/gallium/docs/source/screen.rst
@@ -389,6 +389,8 @@ The integer capabilities:
 * ``PIPE_CAP_TGSI_TES_LAYER_VIEWPORT``: Whether ``TGSI_SEMANTIC_LAYER`` and
   ``TGSI_SEMANTIC_VIEWPORT_INDEX`` are supported as tessellation evaluation
   shader outputs.
+* ``PIPE_CAP_QUERY_DMABUF_ATTRIBS``: Whether the driver supports querying for
+  supported dmabuf formats and format modifiers.
 
 
 .. _pipe_capf:
diff --git a/src/gallium/drivers/freedreno/freedreno_screen.c b/src/gallium/drivers/freedreno/freedreno_screen.c
index 9b3ca4d..6b53e3f 100644
--- a/src/gallium/drivers/freedreno/freedreno_screen.c
+++ b/src/gallium/drivers/freedreno/freedreno_screen.c
@@ -307,6 +307,7 @@ fd_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
 	case PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE:
 	case PIPE_CAP_TGSI_BALLOT:
 	case PIPE_CAP_TGSI_TES_LAYER_VIEWPORT:
+	case PIPE_CAP_QUERY_DMABUF_ATTRIBS:
 		return 0;
 
 	case PIPE_CAP_MAX_VIEWPORTS:
diff --git a/src/gallium/drivers/i915/i915_screen.c b/src/gallium/drivers/i915/i915_screen.c
index 139b5d8..3a05516 100644
--- a/src/gallium/drivers/i915/i915_screen.c
+++ b/src/gallium/drivers/i915/i915_screen.c
@@ -277,6 +277,7 @@ i915_get_param(struct pipe_screen *screen, enum pipe_cap cap)
    case PIPE_CAP_POLYGON_OFFSET_UNITS_UNSCALED:
    case PIPE_CAP_TGSI_ARRAY_COMPONENTS:
    case PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE:
+   case PIPE_CAP_QUERY_DMABUF_ATTRIBS:
       return 0;
 
    case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
diff --git a/src/gallium/drivers/llvmpipe/lp_screen.c b/src/gallium/drivers/llvmpipe/lp_screen.c
index 85449ab..b98e448 100644
--- a/src/gallium/drivers/llvmpipe/lp_screen.c
+++ b/src/gallium/drivers/llvmpipe/lp_screen.c
@@ -352,6 +352,7 @@ llvmpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE:
    case PIPE_CAP_TGSI_BALLOT:
    case PIPE_CAP_TGSI_TES_LAYER_VIEWPORT:
+   case PIPE_CAP_QUERY_DMABUF_ATTRIBS:
       return 0;
    }
    /* should only get here on unhandled cases */
diff --git a/src/gallium/drivers/nouveau/nv30/nv30_screen.c b/src/gallium/drivers/nouveau/nv30/nv30_screen.c
index 24b6b60..7e98cb2 100644
--- a/src/gallium/drivers/nouveau/nv30/nv30_screen.c
+++ b/src/gallium/drivers/nouveau/nv30/nv30_screen.c
@@ -216,6 +216,7 @@ nv30_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE:
    case PIPE_CAP_TGSI_BALLOT:
    case PIPE_CAP_TGSI_TES_LAYER_VIEWPORT:
+   case PIPE_CAP_QUERY_DMABUF_ATTRIBS:
       return 0;
 
    case PIPE_CAP_VENDOR_ID:
diff --git a/src/gallium/drivers/nouveau/nv50/nv50_screen.c b/src/gallium/drivers/nouveau/nv50/nv50_screen.c
index f691b47..a098db6 100644
--- a/src/gallium/drivers/nouveau/nv50/nv50_screen.c
+++ b/src/gallium/drivers/nouveau/nv50/nv50_screen.c
@@ -268,6 +268,7 @@ nv50_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE:
    case PIPE_CAP_TGSI_BALLOT:
    case PIPE_CAP_TGSI_TES_LAYER_VIEWPORT:
+   case PIPE_CAP_QUERY_DMABUF_ATTRIBS:
       return 0;
 
    case PIPE_CAP_VENDOR_ID:
diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
index 13acef5..56b375e 100644
--- a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
+++ b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
@@ -292,6 +292,7 @@ nvc0_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY:
    case PIPE_CAP_INT64_DIVMOD:
    case PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE:
+   case PIPE_CAP_QUERY_DMABUF_ATTRIBS:
       return 0;
 
    case PIPE_CAP_VENDOR_ID:
diff --git a/src/gallium/drivers/r300/r300_screen.c b/src/gallium/drivers/r300/r300_screen.c
index addfc79..4e12008 100644
--- a/src/gallium/drivers/r300/r300_screen.c
+++ b/src/gallium/drivers/r300/r300_screen.c
@@ -238,6 +238,7 @@ static int r300_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
         case PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE:
         case PIPE_CAP_TGSI_BALLOT:
         case PIPE_CAP_TGSI_TES_LAYER_VIEWPORT:
+        case PIPE_CAP_QUERY_DMABUF_ATTRIBS:
             return 0;
 
         /* SWTCL-only features. */
diff --git a/src/gallium/drivers/r600/r600_pipe.c b/src/gallium/drivers/r600/r600_pipe.c
index 12bf551..955cdf4 100644
--- a/src/gallium/drivers/r600/r600_pipe.c
+++ b/src/gallium/drivers/r600/r600_pipe.c
@@ -394,6 +394,7 @@ static int r600_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 		    rscreen->b.family == CHIP_CYPRESS ||
 		    rscreen->b.family == CHIP_HEMLOCK)
 			return 1;
+	case PIPE_CAP_QUERY_DMABUF_ATTRIBS:
 		return 0;
 
 	case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
diff --git a/src/gallium/drivers/radeonsi/si_pipe.c b/src/gallium/drivers/radeonsi/si_pipe.c
index f0e24c2..717508b 100644
--- a/src/gallium/drivers/radeonsi/si_pipe.c
+++ b/src/gallium/drivers/radeonsi/si_pipe.c
@@ -507,6 +507,7 @@ static int si_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 	case PIPE_CAP_TGSI_MUL_ZERO_WINS:
 	case PIPE_CAP_UMA:
 	case PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE:
+	case PIPE_CAP_QUERY_DMABUF_ATTRIBS:
 		return 0;
 
 	case PIPE_CAP_QUERY_BUFFER_OBJECT:
diff --git a/src/gallium/drivers/softpipe/sp_screen.c b/src/gallium/drivers/softpipe/sp_screen.c
index f4c44ef..5b34512 100644
--- a/src/gallium/drivers/softpipe/sp_screen.c
+++ b/src/gallium/drivers/softpipe/sp_screen.c
@@ -302,6 +302,7 @@ softpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE:
    case PIPE_CAP_TGSI_BALLOT:
    case PIPE_CAP_TGSI_TES_LAYER_VIEWPORT:
+   case PIPE_CAP_QUERY_DMABUF_ATTRIBS:
       return 0;
    case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
       return 4;
diff --git a/src/gallium/drivers/svga/svga_screen.c b/src/gallium/drivers/svga/svga_screen.c
index 5e303c8..43fc932 100644
--- a/src/gallium/drivers/svga/svga_screen.c
+++ b/src/gallium/drivers/svga/svga_screen.c
@@ -432,6 +432,7 @@ svga_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE:
    case PIPE_CAP_TGSI_BALLOT:
    case PIPE_CAP_TGSI_TES_LAYER_VIEWPORT:
+   case PIPE_CAP_QUERY_DMABUF_ATTRIBS:
       return 0;
    }
 
diff --git a/src/gallium/drivers/swr/swr_screen.cpp b/src/gallium/drivers/swr/swr_screen.cpp
index 04e6137..8fa8fd4 100644
--- a/src/gallium/drivers/swr/swr_screen.cpp
+++ b/src/gallium/drivers/swr/swr_screen.cpp
@@ -337,6 +337,7 @@ swr_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE:
    case PIPE_CAP_TGSI_BALLOT:
    case PIPE_CAP_TGSI_TES_LAYER_VIEWPORT:
+   case PIPE_CAP_QUERY_DMABUF_ATTRIBS:
       return 0;
 
    case PIPE_CAP_VENDOR_ID:
diff --git a/src/gallium/drivers/vc4/vc4_screen.c b/src/gallium/drivers/vc4/vc4_screen.c
index b5b1ced..00f46e6 100644
--- a/src/gallium/drivers/vc4/vc4_screen.c
+++ b/src/gallium/drivers/vc4/vc4_screen.c
@@ -252,6 +252,7 @@ vc4_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
         case PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE:
         case PIPE_CAP_TGSI_BALLOT:
         case PIPE_CAP_TGSI_TES_LAYER_VIEWPORT:
+        case PIPE_CAP_QUERY_DMABUF_ATTRIBS:
                 return 0;
 
                 /* Stream output. */
diff --git a/src/gallium/drivers/virgl/virgl_screen.c b/src/gallium/drivers/virgl/virgl_screen.c
index ff500ee..2d9f35b 100644
--- a/src/gallium/drivers/virgl/virgl_screen.c
+++ b/src/gallium/drivers/virgl/virgl_screen.c
@@ -262,6 +262,7 @@ virgl_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_TGSI_BALLOT:
    case PIPE_CAP_DOUBLES:
    case PIPE_CAP_TGSI_TES_LAYER_VIEWPORT:
+   case PIPE_CAP_QUERY_DMABUF_ATTRIBS:
       return 0;
    case PIPE_CAP_VENDOR_ID:
       return 0x1af4;
diff --git a/src/gallium/include/pipe/p_defines.h b/src/gallium/include/pipe/p_defines.h
index a389b11..aeb92f8 100644
--- a/src/gallium/include/pipe/p_defines.h
+++ b/src/gallium/include/pipe/p_defines.h
@@ -762,6 +762,7 @@ enum pipe_cap
    PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE,
    PIPE_CAP_TGSI_BALLOT,
    PIPE_CAP_TGSI_TES_LAYER_VIEWPORT,
+   PIPE_CAP_QUERY_DMABUF_ATTRIBS
 };
 
 #define PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_NV50 (1 << 0)
diff --git a/src/gallium/include/pipe/p_screen.h b/src/gallium/include/pipe/p_screen.h
index 8b4239c..88c4922 100644
--- a/src/gallium/include/pipe/p_screen.h
+++ b/src/gallium/include/pipe/p_screen.h
@@ -328,6 +328,27 @@ struct pipe_screen {
     * driver doesn't support an on-disk shader cache.
     */
    struct disk_cache *(*get_disk_shader_cache)(struct pipe_screen *screen);
+
+   /**
+    * Get driver-supported drm_fourcc formats.
+    * If \p max is 0, the total number of supported formats is returned
+    * in \p count, with no modification to \p formats. Otherwise, \p formats
+    * is filled with upto \p max supported format codes. Returns false on
+    * failure.
+    */
+   boolean (*query_dmabuf_formats)(struct pipe_screen *screen, int max,
+                                   int *formats, int *count);
+
+   /**
+    * Get supported modifiers for a format.
+    * If \p max is 0, the total number of supported modifiers for the supplied
+    * format is returned in \p count, with no modification to \p modifiers.
+    * Otherwise, \p modifiers is filled with upto \p max supported modifier
+    * codes. Returns false when \p format is not supported by the driver.
+    */
+   boolean (*query_dmabuf_modifiers)(struct pipe_screen *screen,
+                                     enum pipe_format format, int max,
+                                     uint64_t *modifiers, int *count);
 };
 
 
-- 
2.10.0



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