Metal: Minimum per-vertex stride, 3D texture size + Transform feedback GPUCapabilities expansion.

- Adding in compatibility paths to support minimum per-vertex strides for vertex formats. OpenGL supports a minimum stride of 1 byte, in Metal, this minimum stride is 4 bytes. Meaing a vertex format must be atleast 4-bytes in size.

- Replacing transform feedback compile-time check to conditional look-up, given TF is supported on macOS with Metal.

- 3D texture size safety check added as a general capability, rather than being in the gl backend only. Also required for Metal.

Authored by Apple: Michael Parkin-White

Ref T96261

Reviewed By: fclem

Maniphest Tasks: T96261

Differential Revision: https://developer.blender.org/D14510

1 files changed, 8 insertions, 0 deletions

diff --git a/source/blender/draw/engines/eevee/eevee_volumes.c b/source/blender/draw/engines/eevee/eevee_volumes.c
index 533e71b9b32..2d96cffb4ba 100644
--- a/source/blender/draw/engines/eevee/eevee_volumes.c
+++ b/source/blender/draw/engines/eevee/eevee_volumes.c
@@ -30,6 +30,7 @@
 #include "DEG_depsgraph_query.h"
 
 #include "GPU_capabilities.h"
+#include "GPU_context.h"
 #include "GPU_material.h"
 #include "GPU_texture.h"
 #include "eevee_private.h"
@@ -82,6 +83,13 @@ void EEVEE_volumes_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata)
   tex_size[1] = (int)ceilf(fmaxf(1.0f, viewport_size[1] / (float)tile_size));
   tex_size[2] = max_ii(scene_eval->eevee.volumetric_samples, 1);
 
+  /* Clamp 3D texture size based on device maximum. */
+  int maxSize = GPU_max_texture_3d_size();
+  BLI_assert(tex_size[0] <= maxSize);
+  tex_size[0] = tex_size[0] > maxSize ? maxSize : tex_size[0];
+  tex_size[1] = tex_size[1] > maxSize ? maxSize : tex_size[1];
+  tex_size[2] = tex_size[2] > maxSize ? maxSize : tex_size[2];
+
   common_data->vol_coord_scale[0] = viewport_size[0] / (float)(tile_size * tex_size[0]);
   common_data->vol_coord_scale[1] = viewport_size[1] / (float)(tile_size * tex_size[1]);
   common_data->vol_coord_scale[2] = 1.0f / viewport_size[0];