[Mesa-dev] [PATCH 7/7] radeonsi: enable STD430 packing of UBOs by default

[Timothy Arceri]

Before this change we were defaulting to STD140 which is slightly
less efficient at packing arrays.
---
 src/gallium/drivers/radeonsi/si_pipe.c | 2 +-
 src/mesa/state_tracker/st_context.c    | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/gallium/drivers/radeonsi/si_pipe.c b/src/gallium/drivers/radeonsi/si_pipe.c
index 1d1db02c76..b41a6f5ce7 100644
--- a/src/gallium/drivers/radeonsi/si_pipe.c
+++ b/src/gallium/drivers/radeonsi/si_pipe.c
@@ -522,20 +522,21 @@ static int si_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 	case PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS:
 	case PIPE_CAP_DOUBLES:
 	case PIPE_CAP_TGSI_TEX_TXF_LZ:
 	case PIPE_CAP_TGSI_TES_LAYER_VIEWPORT:
 	case PIPE_CAP_BINDLESS_TEXTURE:
 	case PIPE_CAP_QUERY_TIMESTAMP:
 	case PIPE_CAP_QUERY_TIME_ELAPSED:
 	case PIPE_CAP_NIR_SAMPLERS_AS_DEREF:
 	case PIPE_CAP_QUERY_SO_OVERFLOW:
 	case PIPE_CAP_MEMOBJ:
+	case PIPE_CAP_LOAD_CONSTBUF:
 		return 1;
 
 	case PIPE_CAP_INT64:
 	case PIPE_CAP_INT64_DIVMOD:
 	case PIPE_CAP_TGSI_CLOCK:
 	case PIPE_CAP_CAN_BIND_CONST_BUFFER_AS_VERTEX:
 	case PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION:
 		return 1;
 
 	case PIPE_CAP_TGSI_VOTE:
@@ -611,21 +612,20 @@ static int si_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 	case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
 	case PIPE_CAP_VERTEXID_NOBASE:
 	case PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES:
 	case PIPE_CAP_MAX_WINDOW_RECTANGLES:
 	case PIPE_CAP_NATIVE_FENCE_FD:
 	case PIPE_CAP_TGSI_FS_FBFETCH:
 	case PIPE_CAP_TGSI_MUL_ZERO_WINS:
 	case PIPE_CAP_UMA:
 	case PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE:
 	case PIPE_CAP_POST_DEPTH_COVERAGE:
-	case PIPE_CAP_LOAD_CONSTBUF:
 		return 0;
 
 	case PIPE_CAP_QUERY_BUFFER_OBJECT:
 		return si_have_tgsi_compute(sscreen);
 
 	case PIPE_CAP_DRAW_PARAMETERS:
 	case PIPE_CAP_MULTI_DRAW_INDIRECT:
 	case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS:
 		return sscreen->has_draw_indirect_multi;
 
diff --git a/src/mesa/state_tracker/st_context.c b/src/mesa/state_tracker/st_context.c
index ef2e73e741..bd990fc34a 100644
--- a/src/mesa/state_tracker/st_context.c
+++ b/src/mesa/state_tracker/st_context.c
@@ -367,20 +367,23 @@ st_create_context_priv( struct gl_context *ctx, struct pipe_context *pipe,
 
    /* Need these flags:
     */
    ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
 
    ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
 
    if (no_error)
       ctx->Const.ContextFlags |= GL_CONTEXT_FLAG_NO_ERROR_BIT_KHR;
 
+   ctx->Const.UseSTD430AsDefaultPacking =
+      screen->get_param(screen, PIPE_CAP_LOAD_CONSTBUF);
+
    st->has_stencil_export =
       screen->get_param(screen, PIPE_CAP_SHADER_STENCIL_EXPORT);
    st->has_shader_model3 = screen->get_param(screen, PIPE_CAP_SM3);
    st->has_etc1 = screen->is_format_supported(screen, PIPE_FORMAT_ETC1_RGB8,
                                               PIPE_TEXTURE_2D, 0,
                                               PIPE_BIND_SAMPLER_VIEW);
    st->has_etc2 = screen->is_format_supported(screen, PIPE_FORMAT_ETC2_RGB8,
                                               PIPE_TEXTURE_2D, 0,
                                               PIPE_BIND_SAMPLER_VIEW);
    st->prefer_blit_based_texture_transfer = screen->get_param(screen,
-- 
2.13.4