GPUTexture: Expose layer & mip count

3 files changed, 19 insertions, 0 deletions

diff --git a/source/blender/gpu/GPU_texture.h b/source/blender/gpu/GPU_texture.h
index 734d407d011..0c7f1c1cbd4 100644
--- a/source/blender/gpu/GPU_texture.h
+++ b/source/blender/gpu/GPU_texture.h
@@ -308,6 +308,8 @@ int GPU_texture_dimensions(const GPUTexture *tex);
 
 int GPU_texture_width(const GPUTexture *tex);
 int GPU_texture_height(const GPUTexture *tex);
+int GPU_texture_layer_count(const GPUTexture *tex);
+int GPU_texture_mip_count(const GPUTexture *tex);
 int GPU_texture_orig_width(const GPUTexture *tex);
 int GPU_texture_orig_height(const GPUTexture *tex);
 void GPU_texture_orig_size_set(GPUTexture *tex, int w, int h);
diff --git a/source/blender/gpu/intern/gpu_texture.cc b/source/blender/gpu/intern/gpu_texture.cc
index 9e6a6f75391..285ef87585f 100644
--- a/source/blender/gpu/intern/gpu_texture.cc
+++ b/source/blender/gpu/intern/gpu_texture.cc
@@ -142,6 +142,8 @@ bool Texture::init_view(const GPUTexture *src_,
   w_ = src->w_;
   h_ = src->h_;
   d_ = src->d_;
+  layer_start = min_ii(layer_start, src->layer_count() - 1);
+  layer_len = min_ii(layer_len, (src->layer_count() - layer_start));
   switch (type_) {
     case GPU_TEXTURE_1D_ARRAY:
       h_ = layer_len;
@@ -596,6 +598,16 @@ int GPU_texture_height(const GPUTexture *tex)
   return reinterpret_cast<const Texture *>(tex)->height_get();
 }
 
+int GPU_texture_layer_count(const GPUTexture *tex)
+{
+  return reinterpret_cast<const Texture *>(tex)->layer_count();
+}
+
+int GPU_texture_mip_count(const GPUTexture *tex)
+{
+  return reinterpret_cast<const Texture *>(tex)->mip_count();
+}
+
 int GPU_texture_orig_width(const GPUTexture *tex)
 {
   return reinterpret_cast<const Texture *>(tex)->src_w;
diff --git a/source/blender/gpu/intern/gpu_texture_private.hh b/source/blender/gpu/intern/gpu_texture_private.hh
index ec11fab421c..2a7fc074046 100644
--- a/source/blender/gpu/intern/gpu_texture_private.hh
+++ b/source/blender/gpu/intern/gpu_texture_private.hh
@@ -208,6 +208,11 @@ class Texture {
     }
   }
 
+  int mip_count() const
+  {
+    return mipmaps_;
+  }
+
   eGPUTextureFormat format_get() const
   {
     return format_;