1 files changed, 49 insertions, 5 deletions

diff --git a/source/modules/asura-core/graphics/image.cpp b/source/modules/asura-core/graphics/image.cpp
index 2b274c2..530ea97 100644
--- a/source/modules/asura-core/graphics/image.cpp
+++ b/source/modules/asura-core/graphics/image.cpp
@@ -1,3 +1,5 @@
+#include <asura-utils/exceptions/exception.h>
+
 #include "../core_config.h"
 
 #include "image.h"
@@ -18,12 +20,19 @@ namespace AsuraEngine
 		{
 		}
 
-		bool Image::Refresh(DecodedData* data)
+		bool Image::Renew(DecodedData* data)
 		{
-			ASSERT(data);
-
+			if (!data) return false; 
 			ImageData* imgData = static_cast<ImageData*>(data);
-			ASSERT(imgData);
+			if (!imgData) return false;
+
+			// ���û��������Դ������һ��
+			if (mTex == 0)
+			{
+				glGenTextures(1, &mTex);
+				if (mTex == 0)
+					throw Exception("OpenGL glGenTextures failed.");
+			}
 
 			glBindTexture(GL_TEXTURE_2D, mTex);
 			imgData->Lock();
@@ -40,8 +49,43 @@ namespace AsuraEngine
 				, tf.type
 				, imgData->pixels
 			);
-			mImageData = imgData;
+			mWidth = imgData->width; 
+			mHeight = imgData->height;
+			imgData->Unlock();
+			GLenum err = glGetError(); 
+			if (err != GL_NO_ERROR)
+				throw Exception("OpenGL glTexImage2D cause error, error code=%d", err);
+			glBindTexture(GL_TEXTURE_2D, 0);
+
+			return true;
+		}
+
+		bool Image::Renew(AEIO::DecodedData* data, const AEMath::Vector2i& pos)
+		{
+			if (!data) return false;
+			ImageData* imgData = static_cast<ImageData*>(data);
+			if (!imgData) return false;
+
+			glBindTexture(GL_TEXTURE_2D, mTex);
+			imgData->Lock();
+			int width = imgData->width;
+			int height = imgData->height;
+			TextureFormat tf = ConvertColorFormat(imgData->format);
+			glTexSubImage2D(
+				GL_TEXTURE_2D
+				, 0
+				, pos.x
+				, pos.y
+				, imgData->width
+				, imgData->height
+				, tf.externalformat
+				, tf.type
+				, imgData->pixels
+			);
 			imgData->Unlock();
+			GLenum err = glGetError();
+			if (err != GL_NO_ERROR)
+				throw Exception("OpenGL glTexSubImage2D cause error, error code=%d", err);
 			glBindTexture(GL_TEXTURE_2D, 0);
 
 			return true;