radeonsi/gfx10: enable image stores with DCC

Acked-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Acked-by: Dave Airlie <airlied@redhat.com>

diff --git a/src/gallium/drivers/radeonsi/si_descriptors.c b/src/gallium/drivers/radeonsi/si_descriptors.c
index 5f34668..ca58ec6 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_descriptors.c
+++ b/src/gallium/drivers/radeonsi/si_descriptors.c
@@ -739,7 +739,7 @@ static void si_set_shader_image_desc(struct si_context *ctx,
                assert(fmask_desc || tex->surface.fmask_size == 0);
 
                if (uses_dcc && !skip_decompress &&
-                   (view->access & PIPE_IMAGE_ACCESS_WRITE ||
+                   ((ctx->chip_class <= GFX9 && view->access & PIPE_IMAGE_ACCESS_WRITE) ||
                     !vi_dcc_formats_compatible(screen, res->b.b.format, view->format))) {
                        /* If DCC can't be disabled, at least decompress it.
                         * The decompression is relatively cheap if the surface

diff --git a/src/gallium/drivers/radeonsi/si_shader_internal.h b/src/gallium/drivers/radeonsi/si_shader_internal.h
index 7832f75..90e3f98 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_shader_internal.h
+++ b/src/gallium/drivers/radeonsi/si_shader_internal.h
@@ -347,8 +347,8 @@ LLVMValueRef si_load_sampler_desc(struct si_shader_context *ctx,
                                  enum ac_descriptor_type type);
 LLVMValueRef si_load_image_desc(struct si_shader_context *ctx,
                                LLVMValueRef list, LLVMValueRef index,
-                               enum ac_descriptor_type desc_type, bool dcc_off,
-                               bool bindless);
+                               enum ac_descriptor_type desc_type,
+                               bool uses_store, bool bindless);
 
 void si_load_system_value(struct si_shader_context *ctx,
                          unsigned index,

diff --git a/src/gallium/drivers/radeonsi/si_shader_nir.c b/src/gallium/drivers/radeonsi/si_shader_nir.c
index 9ce88df..7438273 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_shader_nir.c
+++ b/src/gallium/drivers/radeonsi/si_shader_nir.c
@@ -1031,7 +1031,6 @@ si_nir_load_sampler_desc(struct ac_shader_abi *abi,
        struct si_shader_context *ctx = si_shader_context_from_abi(abi);
        LLVMBuilderRef builder = ctx->ac.builder;
        unsigned const_index = base_index + constant_index;
-       bool dcc_off = write;
 
        assert(!descriptor_set);
        assert(!image || desc_type == AC_DESC_IMAGE || desc_type == AC_DESC_BUFFER);
@@ -1049,7 +1048,7 @@ si_nir_load_sampler_desc(struct ac_shader_abi *abi,
                                             LLVMConstInt(ctx->i64, 2, 0), "");
 
                        return si_load_image_desc(ctx, list, dynamic_index, desc_type,
-                                                 dcc_off, true);
+                                                 write, true);
                }
 
                /* Since bindless handle arithmetic can contain an unsigned integer
@@ -1088,7 +1087,7 @@ si_nir_load_sampler_desc(struct ac_shader_abi *abi,
                index = LLVMBuildSub(ctx->ac.builder,
                                     LLVMConstInt(ctx->i32, SI_NUM_IMAGES - 1, 0),
                                     index, "");
-               return si_load_image_desc(ctx, list, index, desc_type, dcc_off, false);
+               return si_load_image_desc(ctx, list, index, desc_type, write, false);
        }
 
        index = LLVMBuildAdd(ctx->ac.builder, index,

diff --git a/src/gallium/drivers/radeonsi/si_shader_tgsi_mem.c b/src/gallium/drivers/radeonsi/si_shader_tgsi_mem.c
index d45dac1..01df996 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_shader_tgsi_mem.c
+++ b/src/gallium/drivers/radeonsi/si_shader_tgsi_mem.c
@@ -176,8 +176,8 @@ static LLVMValueRef force_dcc_off(struct si_shader_context *ctx,
 
 LLVMValueRef si_load_image_desc(struct si_shader_context *ctx,
                                LLVMValueRef list, LLVMValueRef index,
-                               enum ac_descriptor_type desc_type, bool dcc_off,
-                               bool bindless)
+                               enum ac_descriptor_type desc_type,
+                               bool uses_store, bool bindless)
 {
        LLVMBuilderRef builder = ctx->ac.builder;
        LLVMValueRef rsrc;
@@ -196,7 +196,8 @@ LLVMValueRef si_load_image_desc(struct si_shader_context *ctx,
        else
                rsrc = ac_build_load_to_sgpr(&ctx->ac, list, index);
 
-       if (desc_type == AC_DESC_IMAGE && dcc_off)
+       if (ctx->ac.chip_class <= GFX9 &&
+           desc_type == AC_DESC_IMAGE && uses_store)
                rsrc = force_dcc_off(ctx, rsrc);
        return rsrc;
 }
@@ -215,7 +216,6 @@ image_fetch_rsrc(
        LLVMValueRef rsrc_ptr = LLVMGetParam(ctx->main_fn,
                                             ctx->param_samplers_and_images);
        LLVMValueRef index;
-       bool dcc_off = is_store;
 
        if (!image->Register.Indirect) {
                index = LLVMConstInt(ctx->i32,
@@ -259,7 +259,7 @@ image_fetch_rsrc(
 
        *rsrc = si_load_image_desc(ctx, rsrc_ptr, index,
                                   target == TGSI_TEXTURE_BUFFER ? AC_DESC_BUFFER : AC_DESC_IMAGE,
-                                  dcc_off, bindless);
+                                  is_store, bindless);
 }
 
 static void image_fetch_coords(