rebase master update

tests/regression/tex/utils.h

@@ -0,0 +1,42 @@
+#include <cstdint>
+#include <vector>
+#include <iostream>
+#include "blitter.h"
+
+#define ISPOW2(x)   (((x) != 0) && (0 == ((x) & ((x) - 1))))
+
+inline uint32_t ilog2 (uint32_t value) {
+  	return (uint32_t)(sizeof(uint32_t) * 8UL) - (uint32_t)__builtin_clzl((value << 1) - 1UL) - 1;
+}
+
+int LoadTGA(const char *filename, 
+            std::vector<uint8_t> &pixels, 
+            uint32_t *width,
+            uint32_t *height);
+
+int SaveTGA(const char *filename, 
+            const std::vector<uint8_t> &pixels, 
+            uint32_t width,
+            uint32_t height, 
+            uint32_t bpp);
+
+int CopyBuffers(SurfaceDesc &dstDesc, 
+                int32_t dstOffsetX,
+                int32_t dstOffsetY, 
+                uint32_t copyWidth, 
+                uint32_t copyHeight,
+                const SurfaceDesc &srcDesc, 
+                int32_t srcOffsetX,
+                int32_t srcOffsetY);
+
+int ConvertImage(std::vector<uint8_t>& dst_pixels,
+                 const std::vector<uint8_t>& src_pixels,
+                 uint32_t width,
+                 uint32_t height,
+                 ePixelFormat src_format,
+                 ePixelFormat dst_format);
+
+void dump_image(const std::vector<uint8_t>& pixels, 
+                uint32_t width, 
+                uint32_t height, 
+                uint32_t bpp);