........Vertex Array Issue..........don't laugh

Demiurge666 · 2004-04-15T10:56:15

Hello Fello Citizens of GameDev.net!! I've sailed across many seas to reach such a joyful kingdom! Atlast I've found it!! I've found the wonderful, magical kingdom of gamedev.net!! A million apoligies for my bright existence. My golden presence has aluminated your atmosphere more so than the sun could ever achieve! I've encountered such inadmissible conflict. Jehovah is viewed by Gnostics as fundamentally evil, jealous, rigid, lacking in compassion and prone to genocide. GLubyte g_ColorArray[ PARAMETER ][3]; GLfloat g_VertexArray[ PARAMETER ][3]; GLubyte g_IndexArray[ PARAMETER ]; GLvoid BuildArrays( ) { GLfloat b_x = 0.0f, b_z = 0.0f; for( GLfloat degree = 0.0f; degree < PARAMETER; degree++ ) { GLint index = GLint(degree); b_x = GLfloat( RADIUS * cos(degree) ); b_z = GLfloat( RADIUS * sin(degree) ); g_ColorArray[ index ][0] = 255; g_ColorArray[ index ][1] = 255; g_ColorArray[ index ][2] = 255; g_VertexArray[ index ][0] = b_x; g_VertexArray[ index ][1] = 5.0f; g_VertexArray[ index ][2] = b_z; g_IndexArray[ index ] = index; } } GLvoid RenderPoints( ) { glEnableClientState( GL_COLOR_ARRAY ); glEnableClientState( GL_VERTEX_ARRAY ); glColorPointer( 3, GL_UNSIGNED_BYTE, 0, g_ColorArray ); glVertexPointer( 3, GL_FLOAT, 0, g_VertexArray ); glEnable( GL_POINT_SMOOTH ); // Anti-aliasing glPointSize( 20.0f ); glDrawElements( GL_POINT, PARAMETER, GL_UNSIGNED_BYTE, g_IndexArray ); glDisable( GL_POINT_SMOOTH ); glDisableClientState( GL_COLOR_ARRAY ); glDisableClientState( GL_VERTEX_ARRAY ); } I build the arrays in my initiation function and render the points with my mainloop(so its called every frame). I'm trying to plot points to form a circle using vertex arrays. It isn't rendering ANY points at all. What is wrong? [edited by - Demiurge666 on April 12, 2004 6:45:24 PM]

Graphics and GPU Programming Programming

Started by Demiurge666 April 12, 2004 05:19 PM

13 comments, last by Demiurge666 20 years ago

owl

376

April 14, 2004 02:53 PM

try turning your lights off, Soldier!

[size="2"]I like the Walrus best.

Demiurge666

100

Author

April 14, 2004 03:05 PM

I don''t have lighting in here.

Jehovah is viewed by Gnostics as fundamentally evil, jealous, rigid, lacking in compassion and prone to genocide.

Jehovah is viewed by Gnostics as fundamentally evil, jealous, rigid, lacking in compassion and prone to genocide.

psykr

295

April 14, 2004 06:06 PM

But fello citizen, lighting is turned on by default. Much to learn have you about this land of wonderful magical kingdom, oh gaily colored one. Try disabling it and see how it goes.

Demiurge666

100

Author

April 14, 2004 06:40 PM

I disabled lighting and still no success. Why should I disable it in the first place? All I''m doing is plotting points!! with pointsize = 20.0f That should be big enough for a blind man to see.

Jehovah is viewed by Gnostics as fundamentally evil, jealous, rigid, lacking in compassion and prone to genocide.

Jehovah is viewed by Gnostics as fundamentally evil, jealous, rigid, lacking in compassion and prone to genocide.

Ysaneya

1,391

April 15, 2004 10:54 AM

1. Disable GL_POINT_SMOOTH, it's no guarantee that all graphics card support it well.

2. Unless it's a typo, the first argument to glDrawElements should be GL_POINTS, and not GL_POINT.

3. Use short or ints for your indices type, not unsigned chars. I wouldn't be surprized if those didn't work.

Y.

[edited by - Ysaneya on April 15, 2004 11:56:15 AM]

........Vertex Array Issue..........don't laugh

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........Vertex Array Issue..........don't laugh

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