IPHONE: Add a mouse texture buffer surface to VideoContext.

3 files changed, 13 insertions, 20 deletions

diff --git a/backends/platform/iphone/iphone_common.h b/backends/platform/iphone/iphone_common.h
index 6e97d9d853..4dd9407064 100644
--- a/backends/platform/iphone/iphone_common.h
+++ b/backends/platform/iphone/iphone_common.h
@@ -78,6 +78,7 @@ struct VideoContext {
 	int mouseHotspotX, mouseHotspotY;
 	uint mouseWidth, mouseHeight;
 	bool mouseIsVisible;
+	Graphics::Surface mouseTexture;
 
 	// Misc state
 	GraphicsModes graphicsMode;
@@ -89,7 +90,6 @@ void iPhone_updateScreen();
 bool iPhone_fetchEvent(int *outEvent, int *outX, int *outY);
 const char *iPhone_getDocumentsDir();
 bool iPhone_isHighResDevice();
-void iPhone_setMouseCursor(unsigned short *buffer);
 
 uint getSizeNextPOT(uint size);
 
diff --git a/backends/platform/iphone/iphone_video.mm b/backends/platform/iphone/iphone_video.mm
index cdd8d68b31..d7511c56d4 100644
--- a/backends/platform/iphone/iphone_video.mm
+++ b/backends/platform/iphone/iphone_video.mm
@@ -39,8 +39,6 @@ static int _needsScreenUpdate = 0;
 static UITouch *_firstTouch = NULL;
 static UITouch *_secondTouch = NULL;
 
-static unsigned short *_mouseCursor = NULL;
-
 static GLint _renderBufferWidth;
 static GLint _renderBufferHeight;
 
@@ -66,11 +64,6 @@ int printOglError(const char *file, int line) {
 	return retCode;
 }
 
-void iPhone_setMouseCursor(unsigned short *buffer) {
-	_mouseCursor = buffer;
-	[g_iPhoneViewInstance performSelectorOnMainThread:@selector(updateMouseCursor) withObject:nil waitUntilDone: YES];
-}
-
 bool iPhone_isHighResDevice() {
 	return _fullHeight > 480;
 }
@@ -245,6 +238,7 @@ const char *iPhone_getDocumentsDir() {
 
 	_videoContext.screenTexture.free();
 	_videoContext.overlayTexture.free();
+	_videoContext.mouseTexture.free();
 }
 
 - (void)drawRect:(CGRect)frame {
@@ -318,10 +312,7 @@ const char *iPhone_getDocumentsDir() {
 	}
 
 	glBindTexture(GL_TEXTURE_2D, _mouseCursorTexture); printOpenGLError();
-	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, getSizeNextPOT(_videoContext.mouseWidth), getSizeNextPOT(_videoContext.mouseHeight), 0, GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1, _mouseCursor); printOpenGLError();
-
-	free(_mouseCursor);
-	_mouseCursor = NULL;
+	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, _videoContext.mouseTexture.w, _videoContext.mouseTexture.h, 0, GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1, _videoContext.mouseTexture.pixels); printOpenGLError();
 }
 
 - (void)updateMainSurface {
@@ -398,8 +389,8 @@ const char *iPhone_getDocumentsDir() {
 
 	//printf("Cursor: width %u height %u\n", _videoContext.mouseWidth, _videoContext.mouseHeight);
 
-	float texWidth = _videoContext.mouseWidth / (float)getSizeNextPOT(_videoContext.mouseWidth);
-	float texHeight = _videoContext.mouseHeight / (float)getSizeNextPOT(_videoContext.mouseHeight);
+	float texWidth = _videoContext.mouseWidth / (float)_videoContext.mouseTexture.w;
+	float texHeight = _videoContext.mouseHeight / (float)_videoContext.mouseTexture.h;
 
 	const GLfloat texCoords[] = {
 		// Top left
diff --git a/backends/platform/iphone/osys_video.mm b/backends/platform/iphone/osys_video.mm
index 7e2b1eee07..6fa800a004 100644
--- a/backends/platform/iphone/osys_video.mm
+++ b/backends/platform/iphone/osys_video.mm
@@ -392,11 +392,12 @@ void OSystem_IPHONE::setCursorPalette(const byte *colors, uint start, uint num)
 }
 
 void OSystem_IPHONE::updateMouseTexture() {
-	int texWidth = getSizeNextPOT(_videoContext->mouseWidth);
-	int texHeight = getSizeNextPOT(_videoContext->mouseHeight);
-	int bufferSize = texWidth * texHeight * sizeof(int16);
-	uint16 *mouseBuf = (uint16 *)malloc(bufferSize);
-	memset(mouseBuf, 0, bufferSize);
+	uint texWidth = getSizeNextPOT(_videoContext->mouseWidth);
+	uint texHeight = getSizeNextPOT(_videoContext->mouseHeight);
+
+	Graphics::Surface &mouseTexture = _videoContext->mouseTexture;
+	if (mouseTexture.w != texWidth || mouseTexture.h != texHeight)
+		mouseTexture.create(texWidth, texHeight, Graphics::createPixelFormat<5551>());
 
 	const uint16 *palette;
 	if (_mouseCursorPaletteEnabled)
@@ -404,6 +405,7 @@ void OSystem_IPHONE::updateMouseTexture() {
 	else
 		palette = _gamePaletteRGBA5551;
 
+	uint16 *mouseBuf = (uint16 *)mouseTexture.getBasePtr(0, 0);
 	for (uint x = 0; x < _videoContext->mouseWidth; ++x) {
 		for (uint y = 0; y < _videoContext->mouseHeight; ++y) {
 			const byte color = _mouseBuf[y * _videoContext->mouseWidth + x];
@@ -414,5 +416,5 @@ void OSystem_IPHONE::updateMouseTexture() {
 		}
 	}
 
-	iPhone_setMouseCursor(mouseBuf);
+	[g_iPhoneViewInstance performSelectorOnMainThread:@selector(updateMouseCursor) withObject:nil waitUntilDone: YES];
 }