r600g: Use a texture as the underlying resource for compute_memory_pool

This the first step towards being able to use evergreen_cb to bind RATs.

1 files changed, 30 insertions, 4 deletions

diff --git a/src/gallium/drivers/r600/compute_memory_pool.c b/src/gallium/drivers/r600/compute_memory_pool.c
index 01bf0c33dfd..1e88aafae0a 100644
--- a/src/gallium/drivers/r600/compute_memory_pool.c
+++ b/src/gallium/drivers/r600/compute_memory_pool.c
@@ -41,6 +41,32 @@
 #include "compute_memory_pool.h"
 #include "evergreen_compute_internal.h"
 
+static struct r600_resource_texture * create_pool_texture(struct r600_screen * screen,
+		unsigned size_in_dw)
+{
+
+	struct pipe_resource templ;
+	struct r600_resource_texture * tex;
+
+	memset(&templ, 0, sizeof(templ));
+	templ.target = PIPE_TEXTURE_1D;
+	templ.format = PIPE_FORMAT_R32_UNORM;
+	templ.bind = PIPE_BIND_CUSTOM;
+	templ.usage = PIPE_USAGE_IMMUTABLE;
+	templ.flags = 0;
+	templ.width0 = size_in_dw;
+	templ.height0 = 1;
+	templ.depth0 = 1;
+	templ.array_size = 1;
+
+	tex = (struct r600_resource_texture *)r600_texture_create(
+						&screen->screen, &templ);
+	/* XXX: Propagate this error */
+	assert(tex && "Out of memory");
+	tex->is_rat = 1;
+	return tex;
+}
+
 /**
  * Creates a new pool
  */
@@ -54,8 +80,8 @@ struct compute_memory_pool* compute_memory_pool_new(
 	pool->next_id = 1;
 	pool->size_in_dw = initial_size_in_dw;
 	pool->screen = rscreen;
-	pool->bo = (struct r600_resource*)r600_compute_buffer_alloc_vram(
-					pool->screen, pool->size_in_dw*4);
+	pool->bo = (struct r600_resource*)create_pool_texture(pool->screen,
+							pool->size_in_dw);
 	pool->shadow = (uint32_t*)CALLOC(4, pool->size_in_dw);
 
 	return pool;
@@ -147,8 +173,8 @@ void compute_memory_grow_pool(struct compute_memory_pool* pool,
 	pool->screen->screen.resource_destroy(
 		(struct pipe_screen *)pool->screen,
 		(struct pipe_resource *)pool->bo);
-	pool->bo = r600_compute_buffer_alloc_vram(pool->screen,
-						pool->size_in_dw*4);
+	pool->bo = (struct r600_resource*)create_pool_texture(pool->screen,
+							pool->size_in_dw);
 	compute_memory_shadow(pool, pipe, 0);
 }