2 files changed, 8 insertions(+), 0 deletions(-)

M src/nanovg.c
M src/nanovg.h

@@ 841,6 841,11 @@ void nvgUpdateImage(NVGcontext* ctx, int image, const unsigned char* data)
 	ctx->params.renderUpdateTexture(ctx->params.userPtr, image, 0,0, w,h, data);
 }
 
+void nvgUpdateSubImage(NVGcontext* ctx, int image, const unsigned char* data, int x, int y, int w, int h)
+{
+	ctx->params.renderUpdateTexture(ctx->params.userPtr, image, x,y, w,h, data);
+}
+
 void nvgImageSize(NVGcontext* ctx, int image, int* w, int* h)
 {
 	ctx->params.renderGetTextureSize(ctx->params.userPtr, image, w, h);

@@ 386,6 386,9 @@ int nvgCreateImageARGB(NVGcontext* ctx, int w, int h, int imageFlags, const unsi
 // Updates image data specified by image handle.
 void nvgUpdateImage(NVGcontext* ctx, int image, const unsigned char* data);
 
+// Updates part image data specified by image handle.
+void nvgUpdateSubImage(NVGcontext* ctx, int image, const unsigned char* data, int x, int y, int w, int h);
+
 // Returns the dimensions of a created image.
 void nvgImageSize(NVGcontext* ctx, int image, int* w, int* h);