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Tweak CALayer resizing behavior

This commit is contained in:
kappaOne 2013-01-13 18:37:20 +00:00
parent 03b669fb4d
commit f2ad9f470d
1 changed files with 14 additions and 12 deletions
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26
src/native/macosx/org_lwjgl_opengl_MacOSXCanvasPeerInfo.m
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@ -111,10 +111,6 @@ JNIEXPORT void JNICALL Java_org_lwjgl_opengl_MacOSXCanvasPeerInfo_nInitHandle
int oldImageRenderBufferID = imageRenderBufferID;
int oldDepthRenderBufferID = depthRenderBufferID;
// set the size of the offscreen frame buffer window
window_info->display_rect = NSMakeRect(0, 0, width, height);
[window_info->window setFrame:window_info->display_rect display:false];
// create new fbo
int tempFBO;
glGenFramebuffersEXT(1, &tempFBO);
@ -140,19 +136,25 @@ JNIEXPORT void JNICALL Java_org_lwjgl_opengl_MacOSXCanvasPeerInfo_nInitHandle
glClearColor(0.0, 0.0, 0.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
// blit previous fbo to the new fbo
glBindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, fboID);
// blit frameBuffer to the new fbo
glBindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, 0);
glBindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, tempFBO);
glBlitFramebufferEXT(0, 0, width, height,
0, 0, width, height,
GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT,
GL_NEAREST);
glFinish(); // finish before using new fbo and resizing the window
// set new fbo and its sizes
fboID = tempFBO;
fboWidth = width;
fboHeight = height;
// set the size of the offscreen frame buffer window
window_info->display_rect = NSMakeRect(0, 0, width, height);
[window_info->window setFrame:window_info->display_rect display:false];
// clean up the old fbo and renderBuffers
glDeleteFramebuffersEXT(1, &oldFboID);
glDeleteRenderbuffersEXT(1, &oldImageRenderBufferID);
@ -180,16 +182,16 @@ JNIEXPORT void JNICALL Java_org_lwjgl_opengl_MacOSXCanvasPeerInfo_nInitHandle
// set the current context
CGLSetCurrentContext(glContext);
if (fboID == 0) {
// clear garbage background before lwjgl fbo is set
// get the size of the CALayer/AWT Canvas
int width = self.bounds.size.width;
int height = self.bounds.size.height;
if (width != fboWidth || height != fboHeight) {
// clear garbage background before lwjgl fbo blit
glClearColor(0.0, 0.0, 0.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
}
// get the size of the CALayer
int width = fboWidth;
int height = fboHeight;
GLint originalReadFBO;
// get and save the current fbo values