/*

File: EmulateFFVS.m

Abstract: EmulateFFVS Exhibit

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 Inc. may be used to endorse or promote products derived from the Apple

 Software without specific prior written permission from Apple.  Except

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 The Apple Software is provided by Apple on an "AS IS" basis.  APPLE

 MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION

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*/

#import "EmulateFFVS.h"

@implementation EmulateFFVS

- (id) init

{

    [super init];

    return self;

}

- (void) initLazy

{

    [super initLazy];

    /* Setup GLSL */

   {

      NSBundle *bundle;

      NSString *vertex_string, *fragment_string;

      bundle = [NSBundle bundleForClass: [self class]];

        /* Load vertex and fragment shader */

      vertex_string   = [bundle pathForResource: @"EmulateFFVS" ofType: @"vert"];

      vertex_string   = [NSString stringWithContentsOfFile: vertex_string];

      fragment_string = [bundle pathForResource: @"EmulateFFVS" ofType: @"frag"];

      fragment_string = [NSString stringWithContentsOfFile: fragment_string];

        if ([self loadVertexShader: vertex_string fragmentShader: fragment_string])

            NSLog(@"Failed to load EmulateFFVS");

        /* Setup uniforms */

        glUseProgramObjectARB(program_object);

        glUniform3fARB(glGetUniformLocationARB(program_object, "BrickColor"), 0.7, 0.1, 0.0);

        glUniform3fARB(glGetUniformLocationARB(program_object, "MortarColor"), 0.85, 0.86, 0.84);

        glUniform3fARB(glGetUniformLocationARB(program_object, "LightPosition"), 0.0, 1.0, 1.0);

        glUniform2fARB(glGetUniformLocationARB(program_object, "BrickSize"), 0.30, 0.15);

        glUniform2fARB(glGetUniformLocationARB(program_object, "BrickPct"), 0.90, 0.85);        

    }

}

- (void) dealloc

{

    [super dealloc];

}

- (NSString *) name

{

    return @"EmulateFFVS";

}

- (NSString *) descriptionFilename

{

    NSBundle *bundle;

    NSString *string;

    bundle = [NSBundle bundleForClass: [self class]];

   string = [bundle pathForResource: @"EmulateFFVS" ofType: @"rtf"];

    return string;

}

- (void) renderFrame

{

    [super renderFrame];

    glUseProgramObjectARB(program_object);

    glBegin(GL_QUADS);

    glNormal3f(0.0, 0.0, 1.0);

    glVertex2f(-0.5, -0.5);

    glVertex2f( 0.5, -0.5);

    glVertex2f( 0.5,  0.5);

    glVertex2f(-0.5,  0.5);

    glEnd();

    glUseProgramObjectARB(NULL);

}

@end