gallium: Add PIPE_CAP_SURFACE_REINTERPRET_BLOCKS

This cap indicates whether pipe->create_surface can reinterpret a texture
as a surface with a format of different block width/height (but equal
block size).

v2: fix whitespace

16 files changed, 22 insertions, 0 deletions

diff --git a/src/gallium/docs/source/screen.rst b/src/gallium/docs/source/screen.rst
index 06cb56dcbb..ad1d16f3a8 100644
--- a/src/gallium/docs/source/screen.rst
+++ b/src/gallium/docs/source/screen.rst
@@ -309,6 +309,13 @@ The integer capabilities:
   for buffers is supported.
 * ``PIPE_CAP_GENERATE_MIPMAP``: Indicates whether pipe_context::generate_mipmap
   is supported.
+* ``PIPE_CAP_SURFACE_REINTERPRET_BLOCKS``: Indicates whether
+  pipe_context::create_surface supports reinterpreting a texture as a surface
+  of a format with different block width/height (but same block size in bits).
+  For example, a compressed texture image can be interpreted as a
+  non-compressed surface whose texels are the same number of bits as the
+  compressed blocks, and vice versa. The width and height of the surface is
+  adjusted appropriately.
 
 
 .. _pipe_capf:
diff --git a/src/gallium/drivers/freedreno/freedreno_screen.c b/src/gallium/drivers/freedreno/freedreno_screen.c
index 69a55d43a9..59ebbec1ce 100644
--- a/src/gallium/drivers/freedreno/freedreno_screen.c
+++ b/src/gallium/drivers/freedreno/freedreno_screen.c
@@ -249,6 +249,7 @@ fd_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
 	case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
 	case PIPE_CAP_INVALIDATE_BUFFER:
 	case PIPE_CAP_GENERATE_MIPMAP:
+	case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
 		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 fc4708c33f..eb3e3d1c18 100644
--- a/src/gallium/drivers/i915/i915_screen.c
+++ b/src/gallium/drivers/i915/i915_screen.c
@@ -262,6 +262,7 @@ i915_get_param(struct pipe_screen *screen, enum pipe_cap cap)
    case PIPE_CAP_INVALIDATE_BUFFER:
    case PIPE_CAP_GENERATE_MIPMAP:
    case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
+   case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
       return 0;
 
    case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
diff --git a/src/gallium/drivers/ilo/ilo_screen.c b/src/gallium/drivers/ilo/ilo_screen.c
index 7711c19383..1efd789a87 100644
--- a/src/gallium/drivers/ilo/ilo_screen.c
+++ b/src/gallium/drivers/ilo/ilo_screen.c
@@ -487,6 +487,7 @@ ilo_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
    case PIPE_CAP_INVALIDATE_BUFFER:
    case PIPE_CAP_GENERATE_MIPMAP:
+   case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
       return 0;
 
    case PIPE_CAP_VENDOR_ID:
diff --git a/src/gallium/drivers/llvmpipe/lp_screen.c b/src/gallium/drivers/llvmpipe/lp_screen.c
index e9078e5b5b..591c45f401 100644
--- a/src/gallium/drivers/llvmpipe/lp_screen.c
+++ b/src/gallium/drivers/llvmpipe/lp_screen.c
@@ -311,6 +311,7 @@ llvmpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_INVALIDATE_BUFFER:
    case PIPE_CAP_GENERATE_MIPMAP:
    case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
+   case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
       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 0569b57fb7..cf4cca3d77 100644
--- a/src/gallium/drivers/nouveau/nv30/nv30_screen.c
+++ b/src/gallium/drivers/nouveau/nv30/nv30_screen.c
@@ -184,6 +184,7 @@ nv30_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_INVALIDATE_BUFFER:
    case PIPE_CAP_GENERATE_MIPMAP:
    case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
+   case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
       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 771de55620..ccc134bdb3 100644
--- a/src/gallium/drivers/nouveau/nv50/nv50_screen.c
+++ b/src/gallium/drivers/nouveau/nv50/nv50_screen.c
@@ -227,6 +227,7 @@ nv50_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_INVALIDATE_BUFFER:
    case PIPE_CAP_GENERATE_MIPMAP:
    case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
+   case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
       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 4e085aed31..5b19a5e6a0 100644
--- a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
+++ b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
@@ -216,6 +216,7 @@ nvc0_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_INVALIDATE_BUFFER:
    case PIPE_CAP_GENERATE_MIPMAP:
    case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
+   case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
       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 478e049283..c02368cefd 100644
--- a/src/gallium/drivers/r300/r300_screen.c
+++ b/src/gallium/drivers/r300/r300_screen.c
@@ -210,6 +210,7 @@ static int r300_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
         case PIPE_CAP_INVALIDATE_BUFFER:
         case PIPE_CAP_GENERATE_MIPMAP:
         case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
+        case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
             return 0;
 
         /* SWTCL-only features. */
diff --git a/src/gallium/drivers/r600/r600_pipe.c b/src/gallium/drivers/r600/r600_pipe.c
index b49c7535c0..17140bbf05 100644
--- a/src/gallium/drivers/r600/r600_pipe.c
+++ b/src/gallium/drivers/r600/r600_pipe.c
@@ -360,6 +360,7 @@ static int r600_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 	case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL:
 	case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
 	case PIPE_CAP_GENERATE_MIPMAP:
+	case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
 		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 f6c3544584..04e9d60b97 100644
--- a/src/gallium/drivers/radeonsi/si_pipe.c
+++ b/src/gallium/drivers/radeonsi/si_pipe.c
@@ -352,6 +352,7 @@ static int si_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 	case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS:
 	case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
 	case PIPE_CAP_GENERATE_MIPMAP:
+	case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
 		return 0;
 
 	case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
diff --git a/src/gallium/drivers/softpipe/sp_screen.c b/src/gallium/drivers/softpipe/sp_screen.c
index aa227b6058..c43d866333 100644
--- a/src/gallium/drivers/softpipe/sp_screen.c
+++ b/src/gallium/drivers/softpipe/sp_screen.c
@@ -262,6 +262,7 @@ softpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
    case PIPE_CAP_INVALIDATE_BUFFER:
    case PIPE_CAP_GENERATE_MIPMAP:
+   case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
       return 0;
    }
    /* should only get here on unhandled cases */
diff --git a/src/gallium/drivers/svga/svga_screen.c b/src/gallium/drivers/svga/svga_screen.c
index 83238e2994..e97a77888e 100644
--- a/src/gallium/drivers/svga/svga_screen.c
+++ b/src/gallium/drivers/svga/svga_screen.c
@@ -357,6 +357,7 @@ svga_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_TGSI_PACK_HALF_FLOAT:
    case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
    case PIPE_CAP_INVALIDATE_BUFFER:
+   case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
       return 0;
    case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
       return 64;
diff --git a/src/gallium/drivers/vc4/vc4_screen.c b/src/gallium/drivers/vc4/vc4_screen.c
index f9f7d02961..7f531feb82 100644
--- a/src/gallium/drivers/vc4/vc4_screen.c
+++ b/src/gallium/drivers/vc4/vc4_screen.c
@@ -199,6 +199,7 @@ vc4_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
         case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
         case PIPE_CAP_INVALIDATE_BUFFER:
         case PIPE_CAP_GENERATE_MIPMAP:
+        case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
                 return 0;
 
                 /* Stream output. */
diff --git a/src/gallium/drivers/virgl/virgl_screen.c b/src/gallium/drivers/virgl/virgl_screen.c
index 5e6d629c52..cf5a0a0481 100644
--- a/src/gallium/drivers/virgl/virgl_screen.c
+++ b/src/gallium/drivers/virgl/virgl_screen.c
@@ -230,6 +230,7 @@ virgl_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
    case PIPE_CAP_INVALIDATE_BUFFER:
    case PIPE_CAP_GENERATE_MIPMAP:
+   case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
       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 2cd09188c9..31a95ba000 100644
--- a/src/gallium/include/pipe/p_defines.h
+++ b/src/gallium/include/pipe/p_defines.h
@@ -645,6 +645,7 @@ enum pipe_cap
    PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT,
    PIPE_CAP_INVALIDATE_BUFFER,
    PIPE_CAP_GENERATE_MIPMAP,
+   PIPE_CAP_SURFACE_REINTERPRET_BLOCKS,
 };
 
 #define PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_NV50 (1 << 0)