gallium: add packed uniform CAP

Reviewed-by: Marek Olšák <marek.olsak@amd.com>

src/gallium/docs/source/screen.rst

@@ -418,6 +418,8 @@ The integer capabilities:
   set when binding that buffer as constant buffer 0. If the buffer doesn't have
   those bits set, pipe_context::set_constant_buffer(.., 0, ..) is ignored
   by the driver, and the driver can throw assertion failures.
+* ``PIPE_CAP_PACKED_UNIFORMS``: True if the driver supports packed uniforms
+  as opposed to padding to vec4s.
 
 
 .. _pipe_capf:

src/gallium/drivers/etnaviv/etnaviv_screen.c

@@ -269,6 +269,7 @@ etna_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_CONTEXT_PRIORITY_MASK:
    case PIPE_CAP_FENCE_SIGNAL:
    case PIPE_CAP_CONSTBUF0_FLAGS:
+   case PIPE_CAP_PACKED_UNIFORMS:
       return 0;
 
    /* Stream output. */

src/gallium/drivers/freedreno/freedreno_screen.c

@@ -339,6 +339,7 @@ fd_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
 	case PIPE_CAP_SIGNED_VERTEX_BUFFER_OFFSET:
 	case PIPE_CAP_FENCE_SIGNAL:
 	case PIPE_CAP_CONSTBUF0_FLAGS:
+	case PIPE_CAP_PACKED_UNIFORMS:
 		return 0;
 
 	case PIPE_CAP_CONTEXT_PRIORITY_MASK:

src/gallium/drivers/i915/i915_screen.c

@@ -326,6 +326,7 @@ i915_get_param(struct pipe_screen *screen, enum pipe_cap cap)
    case PIPE_CAP_CONTEXT_PRIORITY_MASK:
    case PIPE_CAP_FENCE_SIGNAL:
    case PIPE_CAP_CONSTBUF0_FLAGS:
+   case PIPE_CAP_PACKED_UNIFORMS:
       return 0;
 
    case PIPE_CAP_MAX_VIEWPORTS:

src/gallium/drivers/llvmpipe/lp_screen.c

@@ -361,6 +361,7 @@ llvmpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_CONTEXT_PRIORITY_MASK:
    case PIPE_CAP_FENCE_SIGNAL:
    case PIPE_CAP_CONSTBUF0_FLAGS:
+   case PIPE_CAP_PACKED_UNIFORMS:
       return 0;
    }
    /* should only get here on unhandled cases */

src/gallium/drivers/nouveau/nv30/nv30_screen.c

@@ -228,6 +228,7 @@ nv30_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_CONTEXT_PRIORITY_MASK:
    case PIPE_CAP_FENCE_SIGNAL:
    case PIPE_CAP_CONSTBUF0_FLAGS:
+   case PIPE_CAP_PACKED_UNIFORMS:
       return 0;
 
    case PIPE_CAP_VENDOR_ID:

src/gallium/drivers/nouveau/nv50/nv50_screen.c

@@ -280,6 +280,7 @@ nv50_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_CONTEXT_PRIORITY_MASK:
    case PIPE_CAP_FENCE_SIGNAL:
    case PIPE_CAP_CONSTBUF0_FLAGS:
+   case PIPE_CAP_PACKED_UNIFORMS:
       return 0;
 
    case PIPE_CAP_VENDOR_ID:

src/gallium/drivers/nouveau/nvc0/nvc0_screen.c

@@ -308,6 +308,7 @@ nvc0_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_CONTEXT_PRIORITY_MASK:
    case PIPE_CAP_FENCE_SIGNAL:
    case PIPE_CAP_CONSTBUF0_FLAGS:
+   case PIPE_CAP_PACKED_UNIFORMS:
       return 0;
 
    case PIPE_CAP_VENDOR_ID:

src/gallium/drivers/r300/r300_screen.c

@@ -250,6 +250,7 @@ static int r300_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
         case PIPE_CAP_CONTEXT_PRIORITY_MASK:
         case PIPE_CAP_FENCE_SIGNAL:
         case PIPE_CAP_CONSTBUF0_FLAGS:
+        case PIPE_CAP_PACKED_UNIFORMS:
             return 0;
 
         /* SWTCL-only features. */

src/gallium/drivers/r600/r600_pipe.c

@@ -414,6 +414,7 @@ static int r600_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 	case PIPE_CAP_CONTEXT_PRIORITY_MASK:
 	case PIPE_CAP_FENCE_SIGNAL:
 	case PIPE_CAP_CONSTBUF0_FLAGS:
+	case PIPE_CAP_PACKED_UNIFORMS:
 		return 0;
 
 	case PIPE_CAP_DOUBLES:

src/gallium/drivers/radeonsi/si_get.c

@@ -269,6 +269,7 @@ static int si_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
 	case PIPE_CAP_TILE_RASTER_ORDER:
 	case PIPE_CAP_MAX_COMBINED_SHADER_OUTPUT_RESOURCES:
 	case PIPE_CAP_CONTEXT_PRIORITY_MASK:
+	case PIPE_CAP_PACKED_UNIFORMS:
 		return 0;
 
 	case PIPE_CAP_FENCE_SIGNAL:

src/gallium/drivers/softpipe/sp_screen.c

@@ -313,6 +313,7 @@ softpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_CONTEXT_PRIORITY_MASK:
    case PIPE_CAP_FENCE_SIGNAL:
    case PIPE_CAP_CONSTBUF0_FLAGS:
+   case PIPE_CAP_PACKED_UNIFORMS:
       return 0;
    case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
       return 4;

src/gallium/drivers/svga/svga_screen.c

@@ -451,6 +451,7 @@ svga_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_CONTEXT_PRIORITY_MASK:
    case PIPE_CAP_FENCE_SIGNAL:
    case PIPE_CAP_CONSTBUF0_FLAGS:
+   case PIPE_CAP_PACKED_UNIFORMS:
       return 0;
    }
 

src/gallium/drivers/swr/swr_screen.cpp

@@ -346,6 +346,7 @@ swr_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_CONTEXT_PRIORITY_MASK:
    case PIPE_CAP_FENCE_SIGNAL:
    case PIPE_CAP_CONSTBUF0_FLAGS:
+   case PIPE_CAP_PACKED_UNIFORMS:
       return 0;
 
    case PIPE_CAP_VENDOR_ID:

src/gallium/drivers/vc4/vc4_screen.c

@@ -288,6 +288,7 @@ vc4_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
         case PIPE_CAP_CONTEXT_PRIORITY_MASK:
         case PIPE_CAP_FENCE_SIGNAL:
 	case PIPE_CAP_CONSTBUF0_FLAGS:
+        case PIPE_CAP_PACKED_UNIFORMS:
                 return 0;
 
                 /* Stream output. */

src/gallium/drivers/vc5/vc5_screen.c

@@ -260,6 +260,7 @@ vc5_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
         case PIPE_CAP_MAX_COMBINED_SHADER_OUTPUT_RESOURCES:
         case PIPE_CAP_CONTEXT_PRIORITY_MASK:
 	case PIPE_CAP_CONSTBUF0_FLAGS:
+        case PIPE_CAP_PACKED_UNIFORMS:
                 return 0;
 
                 /* Geometry shader output, unsupported. */

src/gallium/drivers/virgl/virgl_screen.c

@@ -274,6 +274,7 @@ virgl_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_CONTEXT_PRIORITY_MASK:
    case PIPE_CAP_FENCE_SIGNAL:
    case PIPE_CAP_CONSTBUF0_FLAGS:
+   case PIPE_CAP_PACKED_UNIFORMS:
       return 0;
    case PIPE_CAP_VENDOR_ID:
       return 0x1af4;

src/gallium/include/pipe/p_defines.h

@@ -794,6 +794,7 @@ enum pipe_cap
    PIPE_CAP_CONTEXT_PRIORITY_MASK,
    PIPE_CAP_FENCE_SIGNAL,
    PIPE_CAP_CONSTBUF0_FLAGS,
+   PIPE_CAP_PACKED_UNIFORMS,
 };
 
 /**

src/mesa/state_tracker/st_context.c

@@ -433,6 +433,9 @@ st_create_context_priv(struct gl_context *ctx, struct pipe_context *pipe,
    if (no_error)
       ctx->Const.ContextFlags |= GL_CONTEXT_FLAG_NO_ERROR_BIT_KHR;
 
+   ctx->Const.PackedDriverUniformStorage =
+      screen->get_param(screen, PIPE_CAP_PACKED_UNIFORMS);
+
    st->has_stencil_export =
       screen->get_param(screen, PIPE_CAP_SHADER_STENCIL_EXPORT);
    st->has_shader_model3 = screen->get_param(screen, PIPE_CAP_SM3);