radeonsi: don't set sampler buffer offsets in create_sampler_view

do it at bind time, so that pipe_sampler_view is immutable with regard to
buffer reallocations and we don't have to remember all existing buffer
views.

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>

3 files changed, 22 insertions, 24 deletions

diff --git a/src/gallium/drivers/radeonsi/si_descriptors.c b/src/gallium/drivers/radeonsi/si_descriptors.c
index 011f8f0ea8..26e7bebcf0 100644
--- a/src/gallium/drivers/radeonsi/si_descriptors.c
+++ b/src/gallium/drivers/radeonsi/si_descriptors.c
@@ -349,6 +349,17 @@ static void si_sampler_views_begin_new_cs(struct si_context *sctx,
 	}
 }
 
+/* Set buffer descriptor fields that can be changed by reallocations. */
+static void si_set_buf_desc_address(struct r600_resource *buf,
+				    uint64_t offset, uint32_t *state)
+{
+	uint64_t va = buf->gpu_address + offset;
+
+	state[0] = va;
+	state[1] &= C_008F04_BASE_ADDRESS_HI;
+	state[1] |= S_008F04_BASE_ADDRESS_HI(va >> 32);
+}
+
 /* Set texture descriptor fields that can be changed by reallocations.
  *
  * \param tex			texture
@@ -416,6 +427,10 @@ static void si_set_sampler_view(struct si_context *sctx,
 
 		if (rtex->resource.b.b.target == PIPE_BUFFER) {
 			rtex->resource.bind_history |= PIPE_BIND_SAMPLER_VIEW;
+
+			si_set_buf_desc_address(&rtex->resource,
+						view->u.buf.offset,
+						desc + 4);
 		} else {
 			bool is_separate_stencil =
 				rtex->db_compatible &&
@@ -621,6 +636,7 @@ static void si_set_shader_image(struct si_context *ctx,
 	struct si_images_info *images = &ctx->images[shader];
 	struct si_descriptors *descs = si_image_descriptors(ctx, shader);
 	struct r600_resource *res;
+	uint32_t *desc = descs->list + slot * 8;
 
 	if (!view || !view->resource) {
 		si_disable_shader_image(ctx, shader, slot);
@@ -641,6 +657,8 @@ static void si_set_shader_image(struct si_context *ctx,
 					  view->u.buf.offset,
 					  view->u.buf.size,
 					  descs->list + slot * 8);
+		si_set_buf_desc_address(res, view->u.buf.offset, desc + 4);
+
 		images->compressed_colortex_mask &= ~(1 << slot);
 		res->bind_history |= PIPE_BIND_SHADER_IMAGE;
 	} else {
@@ -648,7 +666,6 @@ static void si_set_shader_image(struct si_context *ctx,
 		struct r600_texture *tex = (struct r600_texture *)res;
 		unsigned level = view->u.tex.level;
 		unsigned width, height, depth;
-		uint32_t *desc = descs->list + slot * 8;
 		bool uses_dcc = tex->dcc_offset &&
 				tex->surface.level[level].dcc_enabled;
 
@@ -1407,11 +1424,8 @@ static void si_desc_reset_buffer_offset(struct pipe_context *ctx,
 	uint64_t offset_within_buffer = old_desc_va - old_buf_va;
 
 	/* Update the descriptor. */
-	uint64_t va = r600_resource(new_buf)->gpu_address + offset_within_buffer;
-
-	desc[0] = va;
-	desc[1] = (desc[1] & C_008F04_BASE_ADDRESS_HI) |
-		  S_008F04_BASE_ADDRESS_HI(va >> 32);
+	si_set_buf_desc_address(r600_resource(new_buf), offset_within_buffer,
+				desc);
 }
 
 /* INTERNAL CONST BUFFERS */
@@ -1491,7 +1505,6 @@ static void si_invalidate_buffer(struct pipe_context *ctx, struct pipe_resource
 	uint64_t old_va = rbuffer->gpu_address;
 	unsigned num_elems = sctx->vertex_elements ?
 				       sctx->vertex_elements->count : 0;
-	struct si_sampler_view *view;
 
 	/* Reallocate the buffer in the same pipe_resource. */
 	r600_alloc_resource(&sctx->screen->b, rbuffer);
@@ -1564,12 +1577,6 @@ static void si_invalidate_buffer(struct pipe_context *ctx, struct pipe_resource
 	}
 
 	if (rbuffer->bind_history & PIPE_BIND_SAMPLER_VIEW) {
-		/* Texture buffers - update virtual addresses in sampler view descriptors. */
-		LIST_FOR_EACH_ENTRY(view, &sctx->b.texture_buffers, list) {
-			if (view->base.texture == buf) {
-				si_desc_reset_buffer_offset(ctx, &view->state[4], old_va, buf);
-			}
-		}
 		/* Texture buffers - update bindings. */
 		for (shader = 0; shader < SI_NUM_SHADERS; shader++) {
 			struct si_sampler_views *views = &sctx->samplers[shader].views;
diff --git a/src/gallium/drivers/radeonsi/si_pipe.h b/src/gallium/drivers/radeonsi/si_pipe.h
index 3d9ea9721f..55e4ca7e29 100644
--- a/src/gallium/drivers/radeonsi/si_pipe.h
+++ b/src/gallium/drivers/radeonsi/si_pipe.h
@@ -125,7 +125,6 @@ struct si_blend_color {
 
 struct si_sampler_view {
 	struct pipe_sampler_view	base;
-	struct list_head		list;
         /* [0..7] = image descriptor
          * [4..7] = buffer descriptor */
 	uint32_t			state[8];
diff --git a/src/gallium/drivers/radeonsi/si_state.c b/src/gallium/drivers/radeonsi/si_state.c
index 92f8d90a97..e3de572cab 100644
--- a/src/gallium/drivers/radeonsi/si_state.c
+++ b/src/gallium/drivers/radeonsi/si_state.c
@@ -2661,7 +2661,6 @@ si_make_buffer_descriptor(struct si_screen *screen, struct r600_resource *buf,
 {
 	const struct util_format_description *desc;
 	int first_non_void;
-	uint64_t va;
 	unsigned stride;
 	unsigned num_records;
 	unsigned num_format, data_format;
@@ -2669,7 +2668,6 @@ si_make_buffer_descriptor(struct si_screen *screen, struct r600_resource *buf,
 	desc = util_format_description(format);
 	first_non_void = util_format_get_first_non_void_channel(format);
 	stride = desc->block.bits / 8;
-	va = buf->gpu_address + offset;
 	num_format = si_translate_buffer_numformat(&screen->b.b, desc, first_non_void);
 	data_format = si_translate_buffer_dataformat(&screen->b.b, desc, first_non_void);
 
@@ -2679,9 +2677,8 @@ si_make_buffer_descriptor(struct si_screen *screen, struct r600_resource *buf,
 	if (screen->b.chip_class >= VI)
 		num_records *= stride;
 
-	state[4] = va;
-	state[5] = S_008F04_BASE_ADDRESS_HI(va >> 32) |
-		   S_008F04_STRIDE(stride);
+	state[4] = 0;
+	state[5] = S_008F04_STRIDE(stride);
 	state[6] = num_records;
 	state[7] = S_008F0C_DST_SEL_X(si_map_swizzle(desc->swizzle[0])) |
 		   S_008F0C_DST_SEL_Y(si_map_swizzle(desc->swizzle[1])) |
@@ -2967,8 +2964,6 @@ si_create_sampler_view_custom(struct pipe_context *ctx,
 					  state->u.buf.offset,
 					  state->u.buf.size,
 					  view->state);
-
-		LIST_ADDTAIL(&view->list, &sctx->b.texture_buffers);
 		return &view->base;
 	}
 
@@ -3081,9 +3076,6 @@ static void si_sampler_view_destroy(struct pipe_context *ctx,
 {
 	struct si_sampler_view *view = (struct si_sampler_view *)state;
 
-	if (state->texture && state->texture->target == PIPE_BUFFER)
-		LIST_DELINIT(&view->list);
-
 	pipe_resource_reference(&state->texture, NULL);
 	FREE(view);
 }