//-------------------------------------------------------------------------

//

//  File: Cloud1.m

//

//  Abstract: Cloud 1 GLSL Exhibit

//           

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//  Copyright (c) 2004-2007 Apple Inc., All rights reserved.

//

//-------------------------------------------------------------------------

#import "Cloud1.h"

@implementation Cloud1

- (void) setupUniforms

{

    glUseProgramObjectARB(programObject);

    glUniform3fARB([self getUniformLocation:programObject uniformName:"LightPos"], 0.0, 0.0, 4.0);

    glUniform1fARB([self getUniformLocation:programObject uniformName:"Scale"], 0.6);

    glUniform3fARB([self getUniformLocation:programObject uniformName:"SkyColor"], 0.0, 0.0, 0.8);

    glUniform3fARB([self getUniformLocation:programObject uniformName:"CloudColor"], 0.8, 0.8, 0.8);

    glUniform1iARB([self getUniformLocation:programObject uniformName:"Noise"], 0);

} // setupUniforms

- (void) initLazy

{

    [super initLazy];

    // Setup GLSL

    // Here we get a new model

    model = [[Models alloc] init];

    // noise texture

    noiseTexture = [self loadNoiseTexture];

    // Load vertex and fragment shaders

    [self loadShadersFromResource:@"Cloud1" ];

    // Setup uniforms

    [self setupUniforms];

} // initLazy

- (void) dealloc

{

    glDeleteTextures(1, &noiseTexture);

    [model dealloc];

    [super dealloc];

} // dealloc

- (NSString *) name

{

    return @"Cloud 1";

} // name

- (NSString *) descriptionFilename

{

    return [appBundle pathForResource: @"Cloud1" ofType: @"rtf"];

} // descriptionFilename

- (void) renderFrame

{

    [super renderFrame];

    glUseProgramObjectARB(programObject);

    glBindTexture(GL_TEXTURE_3D, noiseTexture);

    [model drawModel:kModelSolidTeapot];

    glUseProgramObjectARB(NULL);

} // renderFrame

@end