diff options
| -rw-r--r-- | backends/platform/iphone/iphone_video.m | 115 |
1 files changed, 65 insertions, 50 deletions
diff --git a/backends/platform/iphone/iphone_video.m b/backends/platform/iphone/iphone_video.m index 5e1132ff52..b0b9da8885 100644 --- a/backends/platform/iphone/iphone_video.m +++ b/backends/platform/iphone/iphone_video.m @@ -268,6 +268,68 @@ static void setFilterModeForTexture(GLuint tex, GraphicsModes mode) { return [CAEAGLLayer class]; } +- (void)createContext { + CAEAGLLayer *eaglLayer = (CAEAGLLayer *)self.layer; + + eaglLayer.opaque = YES; + eaglLayer.drawableProperties = [NSDictionary dictionaryWithObjectsAndKeys: + [NSNumber numberWithBool:FALSE], kEAGLDrawablePropertyRetainedBacking, kEAGLColorFormatRGB565, kEAGLDrawablePropertyColorFormat, nil]; + + _context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES1]; + + // In case creating the OpenGL ES context failed, we will error out here. + if (_context == nil) { + fprintf(stderr, "Could not create OpenGL ES context\n"); + exit(-1); + } + + if ([EAGLContext setCurrentContext:_context]) { + glGenFramebuffersOES(1, &_viewFramebuffer); printOpenGLError(); + glGenRenderbuffersOES(1, &_viewRenderbuffer); printOpenGLError(); + + glBindFramebufferOES(GL_FRAMEBUFFER_OES, _viewFramebuffer); printOpenGLError(); + glBindRenderbufferOES(GL_RENDERBUFFER_OES, _viewRenderbuffer); printOpenGLError(); + [_context renderbufferStorage:GL_RENDERBUFFER_OES fromDrawable:(id<EAGLDrawable>)self.layer]; + + glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, _viewRenderbuffer); printOpenGLError(); + + // Retrieve the render buffer size. This *should* match the frame size, + // i.e. _fullWidth and _fullHeight. + glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, GL_RENDERBUFFER_WIDTH_OES, &_renderBufferWidth); printOpenGLError(); + glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, GL_RENDERBUFFER_HEIGHT_OES, &_renderBufferHeight); printOpenGLError(); + + if (glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES) != GL_FRAMEBUFFER_COMPLETE_OES) { + NSLog(@"Failed to make complete framebuffer object %x.", glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES)); + return; + } + + _overlayHeight = _renderBufferWidth; + _overlayWidth = _renderBufferHeight; + _overlayTexWidth = getSizeNextPOT(_overlayHeight); + _overlayTexHeight = getSizeNextPOT(_overlayWidth); + + // Since the overlay size won't change the whole run, we can + // precalculate the texture coordinates for the overlay texture here + // and just use it later on. + _overlayTexCoords[0] = _overlayTexCoords[4] = _overlayWidth / (GLfloat)_overlayTexWidth; + _overlayTexCoords[5] = _overlayTexCoords[7] = _overlayHeight / (GLfloat)_overlayTexHeight; + + int textureSize = _overlayTexWidth * _overlayTexHeight * 2; + _overlayTexBuffer = (char *)malloc(textureSize); + memset(_overlayTexBuffer, 0, textureSize); + + glViewport(0, 0, _renderBufferWidth, _renderBufferHeight); printOpenGLError(); + glClearColor(0.0f, 0.0f, 0.0f, 1.0f); printOpenGLError(); + + glEnable(GL_BLEND); + glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); + + glEnable(GL_TEXTURE_2D); printOpenGLError(); + glEnableClientState(GL_TEXTURE_COORD_ARRAY); printOpenGLError(); + glEnableClientState(GL_VERTEX_ARRAY); printOpenGLError(); + } +} + - (id)initWithFrame:(struct CGRect)frame { self = [super initWithFrame: frame]; @@ -283,7 +345,6 @@ static void setFilterModeForTexture(GLuint tex, GraphicsModes mode) { sharedInstance = self; _keyboardView = nil; - _context = nil; _screenTexture = 0; _overlayTexture = 0; _mouseCursorTexture = 0; @@ -308,6 +369,9 @@ static void setFilterModeForTexture(GLuint tex, GraphicsModes mode) { _overlayTexCoords[4] = _overlayTexCoords[5] = _overlayTexCoords[6] = _overlayTexCoords[7] = 0; + // Initialize the OpenGL ES context + [self createContext]; + return self; } @@ -482,55 +546,6 @@ static void setFilterModeForTexture(GLuint tex, GraphicsModes mode) { //printf("Window: (%d, %d), Surface: (%d, %d), Texture(%d, %d)\n", _fullWidth, _fullHeight, _width, _height, _gameScreenTextureWidth, _gameScreenTextureHeight); - if (_context == nil) { - CAEAGLLayer *eaglLayer = (CAEAGLLayer *)self.layer; - - eaglLayer.opaque = YES; - eaglLayer.drawableProperties = [NSDictionary dictionaryWithObjectsAndKeys: - [NSNumber numberWithBool:FALSE], kEAGLDrawablePropertyRetainedBacking, kEAGLColorFormatRGB565, kEAGLDrawablePropertyColorFormat, nil]; - - _context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES1]; - if (!_context || [EAGLContext setCurrentContext:_context]) { - glGenFramebuffersOES(1, &_viewFramebuffer); printOpenGLError(); - glGenRenderbuffersOES(1, &_viewRenderbuffer); printOpenGLError(); - - glBindFramebufferOES(GL_FRAMEBUFFER_OES, _viewFramebuffer); printOpenGLError(); - glBindRenderbufferOES(GL_RENDERBUFFER_OES, _viewRenderbuffer); printOpenGLError(); - [_context renderbufferStorage:GL_RENDERBUFFER_OES fromDrawable:(id<EAGLDrawable>)self.layer]; - glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, _viewRenderbuffer); printOpenGLError(); - - glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, GL_RENDERBUFFER_WIDTH_OES, &_renderBufferWidth); printOpenGLError(); - glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, GL_RENDERBUFFER_HEIGHT_OES, &_renderBufferHeight); printOpenGLError(); - - if (glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES) != GL_FRAMEBUFFER_COMPLETE_OES) { - NSLog(@"Failed to make complete framebuffer object %x.", glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES)); - return; - } - - _overlayHeight = _renderBufferWidth; - _overlayWidth = _renderBufferHeight; - _overlayTexWidth = getSizeNextPOT(_overlayHeight); - _overlayTexHeight = getSizeNextPOT(_overlayWidth); - - _overlayTexCoords[0] = _overlayTexCoords[4] = _overlayWidth / (GLfloat)_overlayTexWidth; - _overlayTexCoords[5] = _overlayTexCoords[7] = _overlayHeight / (GLfloat)_overlayTexHeight; - - int textureSize = _overlayTexWidth * _overlayTexHeight * 2; - _overlayTexBuffer = (char *)malloc(textureSize); - memset(_overlayTexBuffer, 0, textureSize); - - glViewport(0, 0, _renderBufferWidth, _renderBufferHeight); printOpenGLError(); - glClearColor(0.0f, 0.0f, 0.0f, 1.0f); printOpenGLError(); - - glEnable(GL_BLEND); - glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); - - glEnable(GL_TEXTURE_2D); printOpenGLError(); - glEnableClientState(GL_TEXTURE_COORD_ARRAY); printOpenGLError(); - glEnableClientState(GL_VERTEX_ARRAY); printOpenGLError(); - } - } - glMatrixMode(GL_PROJECTION); glLoadIdentity(); |