vertex deceleration in OpenGL

Graphics and GPU Programming Programming OpenGL

Started by Pooya65 June 04, 2011 07:08 AM

2 comments, last by V-man 12 years, 10 months ago

127

Author

June 04, 2011 07:08 AM

can i create vertex deceleration in OpenGL (OGL 2 or 3)( like as d3dx) instead calling vertex attrib pointers in every draw call ?

Trienco

2,555

June 04, 2011 10:24 AM

can i create vertex deceleration in OpenGL (OGL 2 or 3)( like as d3dx) instead calling vertex attrib pointers in every draw call ?

vertex "deceleration" is simple. Make sure you use unaligned and bloated vertex data in cache unfriendly order.

A "not as far as I know" to the question you probably meant to ask about vertex format declarations.

f@dzhttp://festini.device-zero.de

Neilo

290

June 04, 2011 02:47 PM

Vertex Array Objects perform a similar function to vertex declarations (D3D10/D3D11) and Flexible Vertex Formats in D3D9.

It means when it comes to drawing, you bind a Vertex Array Object and your buffers and just call DrawElements.

V-man

813

June 04, 2011 11:16 PM

http://www.opengl.org/wiki/Vertex_Arrays
http://www.opengl.org/wiki/Vertex_Formats
http://www.opengl.org/wiki/Vertex_Array_Object
and so on

Example with VAO
http://www.opengl.org/wiki/Tutorial1:_Rendering_shapes_with_glDrawRangeElements,_VAO,_VBO,_shaders_%28C%2B%2B_/_freeGLUT%29

Sig: http://glhlib.sourceforge.net
an open source GLU replacement library. Much more modern than GLU.
float matrix[16], inverse_matrix[16];
glhLoadIdentityf2(matrix);
glhTranslatef2(matrix, 0.0, 0.0, 5.0);
glhRotateAboutXf2(matrix, angleInRadians);
glhScalef2(matrix, 1.0, 1.0, -1.0);
glhQuickInvertMatrixf2(matrix, inverse_matrix);
glUniformMatrix4fv(uniformLocation1, 1, FALSE, matrix);
glUniformMatrix4fv(uniformLocation2, 1, FALSE, inverse_matrix);

vertex deceleration in OpenGL

This topic is closed to new replies.

Popular Topics

Recommended Tutorials

vertex deceleration in OpenGL

This topic is closed to new replies.

Popular Topics

Recommended Tutorials

Reticulating splines