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

//

//  File: Marble.m

//

//  Abstract: Marble GLSL Exhibit

//           

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//

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

#import "Marble.h"

@implementation Marble

- (void) setupUniforms

{

    glUseProgramObjectARB(programObject);

    glUniform3fARB([self getUniformLocation:programObject uniformName:"LightPosition"], 0.13, 0.5, -1.4);

    glUniform3fARB([self getUniformLocation:programObject uniformName:"stretch"], 15.30, 16.63, 16.00);

    glUniform3fARB([self getUniformLocation:programObject uniformName:"color_a"],  0.00,  0.00,  0.27);

    glUniform3fARB([self getUniformLocation:programObject uniformName:"color_b"],  1.00,  1.00,  1.00);

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

} // setupUniforms

- (void) setupGeometry

{

    geometry = [[Surfaces alloc] init];

    [geometry setSurfaceType:kSlipperSurface];

    geometryDisplayList = [geometry getDisplayList];

} // setupGeometry

- (void) initLazy

{

    [super initLazy];

    // Setup GLSL

    // Here we get a new surface geometry

    [self setupGeometry];

    // noise texture

    noiseTexture = [self loadNoiseTexture];

    // Load vertex and fragment shader

    [self loadShadersFromResource:@"Marble" ];

    // Setup uniforms

    [self setupUniforms];

} // initLazy

- (void) dealloc

{

    glDeleteTextures(1, &noiseTexture);

    [geometry dealloc];

    [super dealloc];

} // dealloc

- (NSString *) name

{

    return @"Marble";

} // name

- (NSString *) descriptionFilename

{

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

} // descriptionFilename

- (void) renderFrame

{

    [super renderFrame];

    glScalef(0.25f, 0.25f, 0.25f);

    glUseProgramObjectARB(programObject);

    glBindTexture(GL_TEXTURE_3D, noiseTexture);

    // Use our display list

    glCallList(geometryDisplayList);

    glUseProgramObjectARB(NULL);

} // renderFrame

@end