diff options
Diffstat (limited to 'intern/cycles/device/device_memory.h')
| -rw-r--r-- | intern/cycles/device/device_memory.h | 44 |
1 files changed, 43 insertions, 1 deletions
diff --git a/intern/cycles/device/device_memory.h b/intern/cycles/device/device_memory.h index 4b10514a9d2..b63dd00068b 100644 --- a/intern/cycles/device/device_memory.h +++ b/intern/cycles/device/device_memory.h @@ -35,6 +35,8 @@ CCL_NAMESPACE_BEGIN +class Device; + enum MemoryType { MEM_READ_ONLY, MEM_WRITE_ONLY, @@ -144,7 +146,7 @@ template<> struct device_type_traits<float2> { template<> struct device_type_traits<float3> { static const DataType data_type = TYPE_FLOAT; - static const int num_elements = 3; + static const int num_elements = 4; }; template<> struct device_type_traits<float4> { @@ -173,6 +175,9 @@ class device_memory { public: size_t memory_size() { return data_size*data_elements*datatype_size(data_type); } + size_t memory_elements_size(int elements) { + return elements*data_elements*datatype_size(data_type); + } /* data information */ DataType data_type; @@ -213,6 +218,22 @@ protected: device_memory& operator = (const device_memory&); }; +template<typename T> +class device_only_memory : public device_memory +{ +public: + device_only_memory() + { + data_type = device_type_traits<T>::data_type; + data_elements = max(device_type_traits<T>::num_elements, 1); + } + + void resize(size_t num) + { + device_memory::resize(num*sizeof(T)); + } +}; + /* Device Vector */ template<typename T> class device_vector : public device_memory @@ -299,6 +320,27 @@ private: array<T> data; }; +/* A device_sub_ptr is a pointer into another existing memory. + * Therefore, it is not allocated separately, but just created from the already allocated base memory. + * It is freed automatically when it goes out of scope, which should happen before the base memory is freed. + * Note that some devices require the offset and size of the sub_ptr to be properly aligned. */ +class device_sub_ptr +{ +public: + device_sub_ptr(Device *device, device_memory& mem, int offset, int size, MemoryType type); + ~device_sub_ptr(); + /* No copying. */ + device_sub_ptr& operator = (const device_sub_ptr&); + + device_ptr operator*() const + { + return ptr; + } +protected: + Device *device; + device_ptr ptr; +}; + CCL_NAMESPACE_END #endif /* __DEVICE_MEMORY_H__ */ |