Attachment 41277 Details for Bug 32515 – This is the source program.

This is the source program.

triangle.c (text/x-csrc), 4.39 KB, created by cardologist on 2010-12-19 19:04:57 UTC

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Description:

Filename:

MIME Type:

Creator: cardologist

Created: 2010-12-19 19:04:57 UTC

Size: 4.39 KB

patch

obsolete

>/* 
>**   
>** gcc triangle.c -o triangle -DW=512 -DH=512 -lglut
>**  
>*/
>
>#include <GL/glut.h>
>#include <stdio.h>
>
>#include "state.h"
>#include "error.h"
>
>#define USE_RED       ( 1 )
>#define USE_TRIANGLE  ( 1 )
>
>GLuint T[5];
>
>static GLvoid 
>display( GLvoid )
>{                       
>    /* ... */
>    {
>		glClear( GL_COLOR_BUFFER_BIT );
>		
>#if !USE_TRIANGLE
>		glDrawElements( GL_TRIANGLE_STRIP, 4, GL_UNSIGNED_SHORT, NULL );     
>#else
>		glDrawElements( GL_TRIANGLES,      3, GL_UNSIGNED_SHORT, NULL );     
>#endif /* !USE_TRIANGLE */
>
>		glFlush( );
>
>		eglGetError( );
>    }
>} 
>
>static GLvoid
>reshape( const GLint X, const GLint Y )
>{
>    /* ... */
>    {
>        glViewport( 0, 0, X, Y ); 
>        
>        eglGetError( );
>    }
>}
>
>static GLvoid 
>init( GLvoid )
>{
>    /* ... */
>    {
>        T[PID_0] = glCreateProgram( ); T[VID_0] = glCreateShader( GL_VERTEX_SHADER ); T[FID_0] = glCreateShader( GL_FRAGMENT_SHADER );
>
>        glGenBuffers( 2, &T[VBO_0] );
>    
>        eglGetError( );
>    }
>    
>    /* ... */
>    {
>        glDisable( GL_DITHER );
>    }
>    
>    /* ... */
>    {
>        const GLfloat  VA[ ] =
>        {
>
>#if !USE_RED
>            -1.0f, -1.0f,  1.0f,  0.0f,  0.0f,  1.0f, 
>             1.0f, -1.0f,  0.0f,  1.0f,  0.0f,  1.0f,
>            -1.0f,  1.0f,  1.0f,  0.0f,  0.0f,  1.0f,  
>
>#if !USE_TRIANGLE
>             1.0f,  1.0f,  0.0f,  1.0f,  0.0f,  1.0f, 
>#endif /* !USE_TRIANGLE */
>
>#else
>            -1.0f, -1.0f,  1.0f,  0.0f,  0.0f,  1.0f, 
>             1.0f, -1.0f,  1.0f,  0.0f,  0.0f,  1.0f,
>            -1.0f,  1.0f,  1.0f,  0.0f,  0.0f,  1.0f,  
>
>#if !USE_TRIANGLE
>             1.0f,  1.0f,  1.0f,  0.0f,  0.0f,  1.0f, 
>#endif /* !USE_TRIANGLE */
>#endif /* !USE_RED      */
>
>        };
>        
>        const GLushort IA[ ] = 
>        {
>
>#if !USE_TRIANGLE
>            0, 1, 2, 3,
>#else
>            0, 1, 2,
>#endif /* !USE_TRIANGLE */
>
>        };
>        
>        glBindBuffer( GL_ARRAY_BUFFER,         T[VBO_0] ); glBufferData( GL_ARRAY_BUFFER,         sizeof( VA ), VA, GL_STATIC_DRAW );                       
>        glBindBuffer( GL_ELEMENT_ARRAY_BUFFER, T[IBO_0] ); glBufferData( GL_ELEMENT_ARRAY_BUFFER, sizeof( IA ), IA, GL_STATIC_DRAW );                                                              
>        
>        glEnableVertexAttribArray( V_ARRAY ); glVertexAttribPointer( V_ARRAY, 2, GL_FLOAT, GL_FALSE, STRIDE, OFFSET( 0 ) );
>        glEnableVertexAttribArray( C_ARRAY ); glVertexAttribPointer( C_ARRAY, 4, GL_FLOAT, GL_FALSE, STRIDE, OFFSET( 2 ) );
>        
>        eglGetError( );
>    }
>    
>    /* ... */
>    {
>        const GLchar *S[ ] = 
>        { 
>            "attribute vec4 A0;\n"
>            "attribute vec4 A1;\n"
>            "varying   vec4 V0;\n"
>            "uniform   mat4 M0;\n\n"
>                
>            "void\n"
>            "main( void )\n"
>            "{\n"
>                "\tV0          = vec4(      A1 );\n\n"
>                
>                "\tgl_Position = vec4( M0 * A0 );\n"
>            "}\n",
>
>            "uniform sampler2D S0;\n"
>            "varying vec4      V0;\n\n"
>            
>            "void\n"
>            "main( void )\n"
>            "{\n"
>                "\tgl_FragColor = vec4( V0 );\n"
>            "}\n",
>        };
>
>        const GLfloat M[ ] =
>        {
>            1.0f,  0.0f,  0.0f,  0.0f,  0.0f,  1.0f,  0.0f,  0.0f, 
>            0.0f,  0.0f,  1.0f,  0.0f,  0.0f,  0.0f,  0.0f,  1.0f,
>        };
>
>        /* ... */
>        {
>            glShaderSource( T[VID_0], 1, &S[0], NULL ); glCompileShader( T[VID_0] ); eglGetShaderInfoLog( T[VID_0], S[0] ); glAttachShader( T[PID_0], T[VID_0] );
>            glShaderSource( T[FID_0], 1, &S[1], NULL ); glCompileShader( T[FID_0] ); eglGetShaderInfoLog( T[FID_0], S[1] ); glAttachShader( T[PID_0], T[FID_0] ); 
>            
>            glBindAttribLocation( T[PID_0], V_ARRAY, "A0" );
>            glBindAttribLocation( T[PID_0], C_ARRAY, "A1" );
>            glLinkProgram       ( T[PID_0]                ); 
>            glUseProgram        ( T[PID_0]                ); glUniformMatrix4fv( glGetUniformLocation( T[PID_0], "M0" ), 1, GL_FALSE, M );                
>            
>            eglGetError( );
>        }
>    }
>}
> 
>int 
>main( int argc, char **argv )
>{
>    glutInit( &argc, argv );
>    glutInitDisplayString( "single rgba" );
>    glutInitWindowSize( W, H );
>    glutInitWindowPosition( 0, 0 );
>    glutCreateWindow( "Example" );
>    glutDisplayFunc( display );
>    glutReshapeFunc( reshape );
>    
>    init( );
>
>    glutMainLoop( );
>    
>    return 0;
>}

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