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Examples: iOS: Fixed missing call to CreateContext() + various shallow coding style tweaks. (#1835)

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This commit is contained in:
omar
2018-05-24 17:42:50 +02:00
parent b88fbd69cc
commit 5fd23eeb74
3 changed files with 104 additions and 116 deletions
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examples/apple_example/imguiex-ios/GameViewController.m
+86 -93
View File
@@ -8,11 +8,9 @@
#import "imgui_impl_ios.h"
#import "debug_hud.h"
#define BUFFER_OFFSET(i) ((char *)NULL + (i))
#define SERVERNAME_KEY @"ServerName"
#define SERVERNAME_ALERT_TAG (10)
#define BUFFER_OFFSET(i) ((char *)NULL + (i))
#define SERVERNAME_KEY @"ServerName"
#define SERVERNAME_ALERT_TAG 10
// Uniform index.
enum
@@ -20,85 +18,80 @@ enum
UNIFORM_MODELVIEWPROJECTION_MATRIX,
UNIFORM_NORMAL_MATRIX,
UNIFORM_DIFFUSE_COLOR,
NUM_UNIFORMS
UNIFORM_COUNT_
};
GLint uniforms[NUM_UNIFORMS];
static GLint uniforms[UNIFORM_COUNT_];
// Attribute index.
enum
{
ATTRIB_VERTEX,
ATTRIB_NORMAL,
NUM_ATTRIBUTES
ATTRIB_COUNT_
};
GLfloat gCubeVertexData[216] =
static const GLfloat gCubeVertexData[216] =
{
// Data layout for each line below is:
// positionX, positionY, positionZ, normalX, normalY, normalZ,
0.5f, -0.5f, -0.5f, 1.0f, 0.0f, 0.0f,
0.5f, 0.5f, -0.5f, 1.0f, 0.0f, 0.0f,
0.5f, -0.5f, 0.5f, 1.0f, 0.0f, 0.0f,
0.5f, -0.5f, 0.5f, 1.0f, 0.0f, 0.0f,
0.5f, 0.5f, -0.5f, 1.0f, 0.0f, 0.0f,
0.5f, 0.5f, 0.5f, 1.0f, 0.0f, 0.0f,
// pos x/y/z, normal x/y/z,
0.5f, -0.5f, -0.5f, 1.0f, 0.0f, 0.0f,
0.5f, 0.5f, -0.5f, 1.0f, 0.0f, 0.0f,
0.5f, -0.5f, 0.5f, 1.0f, 0.0f, 0.0f,
0.5f, -0.5f, 0.5f, 1.0f, 0.0f, 0.0f,
0.5f, 0.5f, -0.5f, 1.0f, 0.0f, 0.0f,
0.5f, 0.5f, 0.5f, 1.0f, 0.0f, 0.0f,
0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f,
-0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f,
0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f,
0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f,
-0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f,
-0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f,
0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f,
-0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f,
0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f,
0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f,
-0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f,
-0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f,
-0.5f, 0.5f, -0.5f, -1.0f, 0.0f, 0.0f,
-0.5f, -0.5f, -0.5f, -1.0f, 0.0f, 0.0f,
-0.5f, 0.5f, 0.5f, -1.0f, 0.0f, 0.0f,
-0.5f, 0.5f, 0.5f, -1.0f, 0.0f, 0.0f,
-0.5f, -0.5f, -0.5f, -1.0f, 0.0f, 0.0f,
-0.5f, -0.5f, 0.5f, -1.0f, 0.0f, 0.0f,
-0.5f, 0.5f, -0.5f, -1.0f, 0.0f, 0.0f,
-0.5f, -0.5f, -0.5f, -1.0f, 0.0f, 0.0f,
-0.5f, 0.5f, 0.5f, -1.0f, 0.0f, 0.0f,
-0.5f, 0.5f, 0.5f, -1.0f, 0.0f, 0.0f,
-0.5f, -0.5f, -0.5f, -1.0f, 0.0f, 0.0f,
-0.5f, -0.5f, 0.5f, -1.0f, 0.0f, 0.0f,
-0.5f, -0.5f, -0.5f, 0.0f, -1.0f, 0.0f,
0.5f, -0.5f, -0.5f, 0.0f, -1.0f, 0.0f,
-0.5f, -0.5f, 0.5f, 0.0f, -1.0f, 0.0f,
-0.5f, -0.5f, 0.5f, 0.0f, -1.0f, 0.0f,
0.5f, -0.5f, -0.5f, 0.0f, -1.0f, 0.0f,
0.5f, -0.5f, 0.5f, 0.0f, -1.0f, 0.0f,
-0.5f, -0.5f, -0.5f, 0.0f, -1.0f, 0.0f,
0.5f, -0.5f, -0.5f, 0.0f, -1.0f, 0.0f,
-0.5f, -0.5f, 0.5f, 0.0f, -1.0f, 0.0f,
-0.5f, -0.5f, 0.5f, 0.0f, -1.0f, 0.0f,
0.5f, -0.5f, -0.5f, 0.0f, -1.0f, 0.0f,
0.5f, -0.5f, 0.5f, 0.0f, -1.0f, 0.0f,
0.5f, 0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
-0.5f, 0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
0.5f, -0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
0.5f, -0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
-0.5f, 0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
-0.5f, -0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
0.5f, 0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
-0.5f, 0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
0.5f, -0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
0.5f, -0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
-0.5f, 0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
-0.5f, -0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
-0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
0.5f, 0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
0.5f, 0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
-0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
-0.5f, 0.5f, -0.5f, 0.0f, 0.0f, -1.0f
0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
-0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
0.5f, 0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
0.5f, 0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
-0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
-0.5f, 0.5f, -0.5f, 0.0f, 0.0f, -1.0f
};
@interface GameViewController () <UIAlertViewDelegate>
{
GLuint _program;
GLKMatrix4 _modelViewProjectionMatrix;
GLKMatrix3 _normalMatrix;
float _rotation;
GLuint _vertexArray;
GLuint _vertexBuffer;
DebugHUD _hud;
GLuint _program;
GLKMatrix4 _modelViewProjectionMatrix;
GLKMatrix3 _normalMatrix;
float _rotation;
GLuint _vertexArray;
GLuint _vertexBuffer;
DebugHUD _hud;
}
@property (strong, nonatomic) EAGLContext *context;
@property (strong, nonatomic) GLKBaseEffect *effect;
@property (strong, nonatomic) ImGuiHelper *imgui;
@property (weak, nonatomic) IBOutlet UIButton *btnServername;
@property (strong, nonatomic) NSString *serverName;
@property (strong, nonatomic) EAGLContext* context;
@property (strong, nonatomic) GLKBaseEffect* effect;
@property (strong, nonatomic) ImGuiHelper* imgui;
@property (weak, nonatomic) IBOutlet UIButton* btnServername;
@property (strong, nonatomic) NSString* serverName;
- (IBAction)onServernameTapped:(id)sender;
@@ -106,7 +99,7 @@ GLfloat gCubeVertexData[216] =
- (void)tearDownGL;
- (BOOL)loadShaders;
- (BOOL)compileShader:(GLuint *)shader type:(GLenum)type file:(NSString *)file;
- (BOOL)compileShader:(GLuint*)shader type:(GLenum)type file:(NSString*)file;
- (BOOL)linkProgram:(GLuint)prog;
- (BOOL)validateProgram:(GLuint)prog;
@end
@@ -119,9 +112,8 @@ GLfloat gCubeVertexData[216] =
self.context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2];
if (!self.context) {
if (!self.context)
NSLog(@"Failed to create ES context");
}
GLKView *view = (GLKView *)self.view;
view.context = self.context;
@@ -140,30 +132,29 @@ GLfloat gCubeVertexData[216] =
[self.imgui connectServer: self.serverName ];
}
DebugHUD_InitDefaults( &_hud );
DebugHUD_InitDefaults(&_hud);
}
- (void)dealloc
{
[self tearDownGL];
if ([EAGLContext currentContext] == self.context) {
if ([EAGLContext currentContext] == self.context)
[EAGLContext setCurrentContext:nil];
}
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
if ([self isViewLoaded] && ([[self view] window] == nil)) {
if ([self isViewLoaded] && ([[self view] window] == nil))
{
self.view = nil;
[self tearDownGL];
if ([EAGLContext currentContext] == self.context) {
if ([EAGLContext currentContext] == self.context)
[EAGLContext setCurrentContext:nil];
}
self.context = nil;
}
@@ -171,7 +162,8 @@ GLfloat gCubeVertexData[216] =
}
- (BOOL)prefersStatusBarHidden {
- (BOOL)prefersStatusBarHidden
{
return YES;
}
@@ -185,7 +177,7 @@ GLfloat gCubeVertexData[216] =
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
if ((buttonIndex==0)&&(alertView.tag==SERVERNAME_ALERT_TAG))
if ((buttonIndex==0) && (alertView.tag == SERVERNAME_ALERT_TAG))
{
// This is really janky. I usually just hardcode the servername since I'm building it anyway.
// If you want to properly handle updating the server, you'll want to tear down and recreate
@@ -193,7 +185,8 @@ GLfloat gCubeVertexData[216] =
BOOL serverNameWasSet = self.serverName.length > 0;
NSString *serverName = [[alertView textFieldAtIndex:0] text];
if ([serverName length] > 0) {
if ([serverName length] > 0)
{
self.serverName = serverName;
NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];
[userDefaults setObject:serverName forKey:SERVERNAME_KEY ];
@@ -202,7 +195,8 @@ GLfloat gCubeVertexData[216] =
[self.btnServername setTitle:self.serverName forState:UIControlStateNormal];
// If we hadn't previously connected, try now
if (!serverNameWasSet) {
if (!serverNameWasSet)
{
[self.imgui connectServer:self.serverName];
}
else
@@ -241,8 +235,6 @@ GLfloat gCubeVertexData[216] =
glVertexAttribPointer(GLKVertexAttribNormal, 3, GL_FLOAT, GL_FALSE, 24, BUFFER_OFFSET(12));
glBindVertexArrayOES(0);
}
- (void)tearDownGL
@@ -254,7 +246,8 @@ GLfloat gCubeVertexData[216] =
self.effect = nil;
if (_program) {
if (_program)
{
glDeleteProgram(_program);
_program = 0;
}
@@ -285,9 +278,7 @@ GLfloat gCubeVertexData[216] =
modelViewMatrix = GLKMatrix4Multiply(baseModelViewMatrix, modelViewMatrix);
_normalMatrix = GLKMatrix3InvertAndTranspose(GLKMatrix4GetMatrix3(modelViewMatrix), NULL);
_modelViewProjectionMatrix = GLKMatrix4Multiply(projectionMatrix, modelViewMatrix);
_rotation += self.timeSinceLastUpdate * (_hud.rotation_speed * (M_PI / 180.0));
}
@@ -359,7 +350,8 @@ GLfloat gCubeVertexData[216] =
glBindAttribLocation(_program, GLKVertexAttribNormal, "normal");
// Link program.
if (![self linkProgram:_program]) {
if (![self linkProgram:_program])
{
NSLog(@"Failed to link program: %d", _program);
if (vertShader) {
@@ -384,11 +376,13 @@ GLfloat gCubeVertexData[216] =
uniforms[UNIFORM_DIFFUSE_COLOR] = glGetUniformLocation(_program, "diffuseColor");
// Release vertex and fragment shaders.
if (vertShader) {
if (vertShader)
{
glDetachShader(_program, vertShader);
glDeleteShader(vertShader);
}
if (fragShader) {
if (fragShader)
{
glDetachShader(_program, fragShader);
glDeleteShader(fragShader);
}
@@ -402,7 +396,8 @@ GLfloat gCubeVertexData[216] =
const GLchar *source;
source = (GLchar *)[[NSString stringWithContentsOfFile:file encoding:NSUTF8StringEncoding error:nil] UTF8String];
if (!source) {
if (!source)
{
NSLog(@"Failed to load vertex shader");
return NO;
}
@@ -423,7 +418,8 @@ GLfloat gCubeVertexData[216] =
#endif
glGetShaderiv(*shader, GL_COMPILE_STATUS, &status);
if (status == 0) {
if (status == 0)
{
glDeleteShader(*shader);
return NO;
}
@@ -439,7 +435,8 @@ GLfloat gCubeVertexData[216] =
#if defined(DEBUG)
GLint logLength;
glGetProgramiv(prog, GL_INFO_LOG_LENGTH, &logLength);
if (logLength > 0) {
if (logLength > 0)
{
GLchar *log = (GLchar *)malloc(logLength);
glGetProgramInfoLog(prog, logLength, &logLength, log);
NSLog(@"Program link log:\n%s", log);
@@ -448,10 +445,8 @@ GLfloat gCubeVertexData[216] =
#endif
glGetProgramiv(prog, GL_LINK_STATUS, &status);
if (status == 0) {
if (status == 0)
return NO;
}
return YES;
}
@@ -469,10 +464,8 @@ GLfloat gCubeVertexData[216] =
}
glGetProgramiv(prog, GL_VALIDATE_STATUS, &status);
if (status == 0) {
if (status == 0)
return NO;
}
return YES;
}