ac/surface: increment surf_index only when tile swizzle is allowed

Reviewed-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

src/amd/common/ac_surface.c

@@ -30,6 +30,7 @@
 #include "amdgpu_id.h"
 #include "ac_gpu_info.h"
 #include "util/macros.h"
+#include "util/u_atomic.h"
 #include "util/u_math.h"
 
 #include <errno.h>
@@ -706,13 +707,14 @@ static int gfx6_compute_surface(ADDR_HANDLE addrlib,
 	surf->is_linear = surf->u.legacy.level[0].mode == RADEON_SURF_MODE_LINEAR_ALIGNED;
 
 	/* Work out tile swizzle. */
-	if (surf->u.legacy.level[0].mode == RADEON_SURF_MODE_2D &&
+	if (config->info.surf_index &&
+	    surf->u.legacy.level[0].mode == RADEON_SURF_MODE_2D &&
 	    !(surf->flags & (RADEON_SURF_Z_OR_SBUFFER | RADEON_SURF_SHAREABLE)) &&
 	    (config->info.samples > 1 || !(surf->flags & RADEON_SURF_SCANOUT))) {
 		ADDR_COMPUTE_BASE_SWIZZLE_INPUT AddrBaseSwizzleIn = {0};
 		ADDR_COMPUTE_BASE_SWIZZLE_OUTPUT AddrBaseSwizzleOut = {0};
 
-		AddrBaseSwizzleIn.surfIndex = config->info.surf_index;
+		AddrBaseSwizzleIn.surfIndex = p_atomic_inc_return(config->info.surf_index) - 1;
 		AddrBaseSwizzleIn.tileIndex = AddrSurfInfoIn.tileIndex;
 		AddrBaseSwizzleIn.macroModeIndex = AddrSurfInfoOut.macroModeIndex;
 		AddrBaseSwizzleIn.pTileInfo = AddrSurfInfoOut.pTileInfo;

src/amd/common/ac_surface.h

@@ -209,10 +209,10 @@ struct ac_surf_info {
 	uint32_t width;
 	uint32_t height;
 	uint32_t depth;
-	uint32_t surf_index;
 	uint8_t samples;
 	uint8_t levels;
 	uint16_t array_size;
+	uint32_t *surf_index; /* Set a monotonic counter for tile swizzling. */
 };
 
 struct ac_surf_config {

src/amd/vulkan/radv_image.c

@@ -809,7 +809,7 @@ radv_image_create(VkDevice _device,
 	image->shareable = vk_find_struct_const(pCreateInfo->pNext,
 	                                        EXTERNAL_MEMORY_IMAGE_CREATE_INFO_KHR) != NULL;
 	if (!vk_format_is_depth(pCreateInfo->format) && !create_info->scanout && !image->shareable) {
-		image->info.surf_index = p_atomic_inc_return(&device->image_mrt_offset_counter) - 1;
+		image->info.surf_index = &device->image_mrt_offset_counter;
 	}
 
 	radv_init_surface(device, &image->surface, create_info);

src/gallium/winsys/amdgpu/drm/amdgpu_surface.c

@@ -92,6 +92,7 @@ static int amdgpu_surface_init(struct radeon_winsys *rws,
    config.info.levels = tex->last_level + 1;
    config.is_3d = !!(tex->target == PIPE_TEXTURE_3D);
    config.is_cube = !!(tex->target == PIPE_TEXTURE_CUBE);
+   config.info.surf_index = NULL;
 
    return ac_compute_surface(ws->addrlib, &ws->info, &config, mode, surf);
 }