start work on wrapping sdl

formats/dat/dat.go

@@ -7,7 +7,7 @@ import (
 )
 
 type Palette struct {
-	Colors [256]imageColor.NRGBA
+	Colors [256]imageColor.RGBA
 }
 
 type color struct {
@@ -24,7 +24,7 @@ func NewFromReader(reader io.Reader) (*Palette, error) {
 
 	palette := new(Palette)
 	for i, color := range colors {
-		palette.Colors[i] = imageColor.NRGBA{color.R, color.G, color.B, 0xff}
+		palette.Colors[i] = imageColor.RGBA{color.R, color.G, color.B, 0xff}
 	}
 
 	return palette, nil

graphics/texture.go

@@ -0,0 +1,22 @@
+package graphics
+
+import (
+	"image/color"
+	"unsafe"
+
+	"github.com/veandco/go-sdl2/sdl"
+)
+
+func NewSurfaceFromRgba(colors []color.RGBA, width, height int) (*sdl.Surface, error) {
+	return sdl.CreateRGBSurfaceFrom(
+		unsafe.Pointer(&colors[0]),
+		int32(width),
+		int32(height),
+		32,
+		width*4,
+		0x000000ff,
+		0x0000ff00,
+		0x00ff0000,
+		0xff000000,
+	)
+}

tools/dc6/dc6.go

@@ -39,7 +39,7 @@ func extractSprite(spritePath string, palette *dat.Palette, targetDir string) er
 
 	for di, direction := range sprite.Directions {
 		for fi, frame := range direction.Frames {
-			img := image.NewNRGBA(image.Rect(0, 0, frame.Width, frame.Height))
+			img := image.NewRGBA(image.Rect(0, 0, frame.Width, frame.Height))
 			for y := 0; y < frame.Height; y++ {
 				for x := 0; x < frame.Width; x++ {
 					img.Set(x, y, palette.Colors[frame.Data[y*frame.Width+x]])