sokol_gfx.h d3d11: fix color vs depth pixel format caps bit lookup

Fixes #1192

sokol_gfx.h

@@ -10572,8 +10572,13 @@ _SOKOL_PRIVATE void _sg_d3d11_init_caps(void) {
         info->sample = 0 != (srv_dxgi_fmt_caps & D3D11_FORMAT_SUPPORT_TEXTURE2D);
         info->filter = 0 != (srv_dxgi_fmt_caps & D3D11_FORMAT_SUPPORT_SHADER_SAMPLE);
         info->render = render || depth;
-        info->blend  = 0 != (rtv_dxgi_fmt_caps & D3D11_FORMAT_SUPPORT_BLENDABLE);
-        info->msaa   = 0 != (rtv_dxgi_fmt_caps & D3D11_FORMAT_SUPPORT_MULTISAMPLE_RENDERTARGET);
+        if (depth) {
+            info->blend = 0 != (dsv_dxgi_fmt_caps & D3D11_FORMAT_SUPPORT_BLENDABLE);
+            info->msaa  = 0 != (dsv_dxgi_fmt_caps & D3D11_FORMAT_SUPPORT_MULTISAMPLE_RENDERTARGET);
+        } else {
+            info->blend = 0 != (rtv_dxgi_fmt_caps & D3D11_FORMAT_SUPPORT_BLENDABLE);
+            info->msaa  = 0 != (rtv_dxgi_fmt_caps & D3D11_FORMAT_SUPPORT_MULTISAMPLE_RENDERTARGET);
+        }
         info->depth  = depth;
     }
 }