| rev |
line source |
|
nuclear@0
|
1 #import "ES2Renderer.h"
|
|
nuclear@0
|
2 #include "istereo.h"
|
|
nuclear@0
|
3
|
|
nuclear@0
|
4 @implementation ES2Renderer
|
|
nuclear@0
|
5
|
|
nuclear@0
|
6 // Create an OpenGL ES 2.0 context
|
|
nuclear@0
|
7 - (id)init
|
|
nuclear@0
|
8 {
|
|
nuclear@0
|
9 if ((self = [super init]))
|
|
nuclear@0
|
10 {
|
|
nuclear@0
|
11 context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2];
|
|
nuclear@0
|
12
|
|
nuclear@0
|
13 if (!context || ![EAGLContext setCurrentContext:context])
|
|
nuclear@0
|
14 {
|
|
nuclear@0
|
15 [self release];
|
|
nuclear@0
|
16 return nil;
|
|
nuclear@0
|
17 }
|
|
nuclear@0
|
18
|
|
nuclear@0
|
19 // Create default framebuffer object. The backing will be allocated for the current layer in -resizeFromLayer
|
|
nuclear@0
|
20 glGenFramebuffers(1, &defaultFramebuffer);
|
|
nuclear@0
|
21 glGenRenderbuffers(1, &colorRenderbuffer);
|
|
nuclear@0
|
22 glBindFramebuffer(GL_FRAMEBUFFER, defaultFramebuffer);
|
|
nuclear@0
|
23 glBindRenderbuffer(GL_RENDERBUFFER, colorRenderbuffer);
|
|
nuclear@0
|
24 glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, colorRenderbuffer);
|
|
nuclear@0
|
25
|
|
nuclear@0
|
26 init();
|
|
nuclear@0
|
27 }
|
|
nuclear@0
|
28
|
|
nuclear@0
|
29 return self;
|
|
nuclear@0
|
30 }
|
|
nuclear@0
|
31
|
|
nuclear@0
|
32 - (void)render
|
|
nuclear@0
|
33 {
|
|
nuclear@0
|
34 redraw();
|
|
nuclear@0
|
35 // This application only creates a single default framebuffer which is already bound at this point.
|
|
nuclear@0
|
36 // This call is redundant, but needed if dealing with multiple framebuffers.
|
|
nuclear@0
|
37 //glBindFramebuffer(GL_FRAMEBUFFER, defaultFramebuffer);
|
|
nuclear@0
|
38 //glViewport(0, 0, backingWidth, backingHeight);
|
|
nuclear@0
|
39
|
|
nuclear@0
|
40 // This call is redundant, but needed if dealing with multiple renderbuffers.
|
|
nuclear@0
|
41 //glBindRenderbuffer(GL_RENDERBUFFER, colorRenderbuffer);
|
|
nuclear@0
|
42 [context presentRenderbuffer:GL_RENDERBUFFER];
|
|
nuclear@0
|
43 }
|
|
nuclear@0
|
44
|
|
nuclear@0
|
45 - (BOOL)resizeFromLayer:(CAEAGLLayer *)layer
|
|
nuclear@0
|
46 {
|
|
nuclear@0
|
47 // Allocate color buffer backing based on the current layer size
|
|
nuclear@0
|
48 glBindRenderbuffer(GL_RENDERBUFFER, colorRenderbuffer);
|
|
nuclear@0
|
49 [context renderbufferStorage:GL_RENDERBUFFER fromDrawable:layer];
|
|
nuclear@0
|
50 glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_WIDTH, &backingWidth);
|
|
nuclear@0
|
51 glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_HEIGHT, &backingHeight);
|
|
nuclear@0
|
52
|
|
nuclear@0
|
53 if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
|
|
nuclear@0
|
54 {
|
|
nuclear@0
|
55 NSLog(@"Failed to make complete framebuffer object %x", glCheckFramebufferStatus(GL_FRAMEBUFFER));
|
|
nuclear@0
|
56 return NO;
|
|
nuclear@0
|
57 }
|
|
nuclear@0
|
58
|
|
nuclear@0
|
59 return YES;
|
|
nuclear@0
|
60 }
|
|
nuclear@0
|
61
|
|
nuclear@0
|
62 - (void)dealloc
|
|
nuclear@0
|
63 {
|
|
nuclear@0
|
64 // Tear down GL
|
|
nuclear@0
|
65 if (defaultFramebuffer)
|
|
nuclear@0
|
66 {
|
|
nuclear@0
|
67 glDeleteFramebuffers(1, &defaultFramebuffer);
|
|
nuclear@0
|
68 defaultFramebuffer = 0;
|
|
nuclear@0
|
69 }
|
|
nuclear@0
|
70
|
|
nuclear@0
|
71 if (colorRenderbuffer)
|
|
nuclear@0
|
72 {
|
|
nuclear@0
|
73 glDeleteRenderbuffers(1, &colorRenderbuffer);
|
|
nuclear@0
|
74 colorRenderbuffer = 0;
|
|
nuclear@0
|
75 }
|
|
nuclear@0
|
76
|
|
nuclear@0
|
77 if (program)
|
|
nuclear@0
|
78 {
|
|
nuclear@0
|
79 glDeleteProgram(program);
|
|
nuclear@0
|
80 program = 0;
|
|
nuclear@0
|
81 }
|
|
nuclear@0
|
82
|
|
nuclear@0
|
83 // Tear down context
|
|
nuclear@0
|
84 if ([EAGLContext currentContext] == context)
|
|
nuclear@0
|
85 [EAGLContext setCurrentContext:nil];
|
|
nuclear@0
|
86
|
|
nuclear@0
|
87 [context release];
|
|
nuclear@0
|
88 context = nil;
|
|
nuclear@0
|
89
|
|
nuclear@0
|
90 [super dealloc];
|
|
nuclear@0
|
91 }
|
|
nuclear@0
|
92
|
|
nuclear@0
|
93 @end
|
