Code refactor: make texture code more consistent between devices.

* Use common TextureInfo struct for all devices, except CUDA fermi.
* Move image sampling code to kernels/*/kernel_*_image.h files.
* Use arrays for data textures on Fermi too, so device_vector<Struct> works.

intern/cycles/util/util_texture.h

@@ -46,12 +46,64 @@ CCL_NAMESPACE_BEGIN
 
 #if defined (__KERNEL_CUDA__) && (__CUDA_ARCH__ < 300)
 #  define kernel_tex_type(tex) (tex < TEX_START_BYTE4_CUDA ? IMAGE_DATA_TYPE_FLOAT4 : IMAGE_DATA_TYPE_BYTE4)
-#  define kernel_tex_index(tex) (tex)
 #else
 #  define kernel_tex_type(tex) (tex & IMAGE_DATA_TYPE_MASK)
-#  define kernel_tex_index(tex) (tex >> IMAGE_DATA_TYPE_SHIFT)
 #endif
 
+/* Interpolation types for textures
+ * cuda also use texture space to store other objects */
+enum InterpolationType {
+	INTERPOLATION_NONE = -1,
+	INTERPOLATION_LINEAR = 0,
+	INTERPOLATION_CLOSEST = 1,
+	INTERPOLATION_CUBIC = 2,
+	INTERPOLATION_SMART = 3,
+
+	INTERPOLATION_NUM_TYPES,
+};
+
+/* Texture types
+ * Since we store the type in the lower bits of a flat index,
+ * the shift and bit mask constant below need to be kept in sync. */
+enum ImageDataType {
+	IMAGE_DATA_TYPE_FLOAT4 = 0,
+	IMAGE_DATA_TYPE_BYTE4 = 1,
+	IMAGE_DATA_TYPE_HALF4 = 2,
+	IMAGE_DATA_TYPE_FLOAT = 3,
+	IMAGE_DATA_TYPE_BYTE = 4,
+	IMAGE_DATA_TYPE_HALF = 5,
+
+	IMAGE_DATA_NUM_TYPES
+};
+
+#define IMAGE_DATA_TYPE_SHIFT 3
+#define IMAGE_DATA_TYPE_MASK 0x7
+
+/* Extension types for textures.
+ *
+ * Defines how the image is extrapolated past its original bounds. */
+enum ExtensionType {
+	/* Cause the image to repeat horizontally and vertically. */
+	EXTENSION_REPEAT = 0,
+	/* Extend by repeating edge pixels of the image. */
+	EXTENSION_EXTEND = 1,
+	/* Clip to image size and set exterior pixels as transparent. */
+	EXTENSION_CLIP = 2,
+
+	EXTENSION_NUM_TYPES,
+};
+
+typedef struct TextureInfo {
+	/* Pointer, offset or texture depending on device. */
+	uint64_t data;
+	/* Buffer number for OpenCL. */
+	uint cl_buffer;
+	/* Interpolation and extension type. */
+	uint interpolation, extension;
+	/* Dimensions. */
+	uint width, height, depth;
+} TextureInfo;
+
 CCL_NAMESPACE_END
 
 #endif /* __UTIL_TEXTURE_H__ */

intern/cycles/util/util_types.h

@@ -101,52 +101,6 @@ ccl_device_inline size_t round_down(size_t x, size_t multiple)
 	return (x / multiple) * multiple;
 }
 
-/* Interpolation types for textures
- * cuda also use texture space to store other objects */
-enum InterpolationType {
-	INTERPOLATION_NONE = -1,
-	INTERPOLATION_LINEAR = 0,
-	INTERPOLATION_CLOSEST = 1,
-	INTERPOLATION_CUBIC = 2,
-	INTERPOLATION_SMART = 3,
-
-	INTERPOLATION_NUM_TYPES,
-};
-
-/* Texture types
- * Since we store the type in the lower bits of a flat index,
- * the shift and bit mask constant below need to be kept in sync.
- */
-
-enum ImageDataType {
-	IMAGE_DATA_TYPE_FLOAT4 = 0,
-	IMAGE_DATA_TYPE_BYTE4 = 1,
-	IMAGE_DATA_TYPE_HALF4 = 2,
-	IMAGE_DATA_TYPE_FLOAT = 3,
-	IMAGE_DATA_TYPE_BYTE = 4,
-	IMAGE_DATA_TYPE_HALF = 5,
-
-	IMAGE_DATA_NUM_TYPES
-};
-
-#define IMAGE_DATA_TYPE_SHIFT 3
-#define IMAGE_DATA_TYPE_MASK 0x7
-
-/* Extension types for textures.
- *
- * Defines how the image is extrapolated past its original bounds.
- */
-enum ExtensionType {
-	/* Cause the image to repeat horizontally and vertically. */
-	EXTENSION_REPEAT = 0,
-	/* Extend by repeating edge pixels of the image. */
-	EXTENSION_EXTEND = 1,
-	/* Clip to image size and set exterior pixels as transparent. */
-	EXTENSION_CLIP = 2,
-
-	EXTENSION_NUM_TYPES,
-};
-
 CCL_NAMESPACE_END
 
 /* Vectorized types declaration. */