VertexAttribPointer - OpenGL ES 2.0
Posted Friday, 9 July, 2010 - 08:15 by sjoerd222 inHi
I have some Texture Vertices I want to use:
float[] quadGridTexture_Vertices = {0.0f, 2.0f, 0.0f, 2.0f, 0.0f, 2.0f, 0.0f, 2.0f };
What works is:
GL.VertexAttribPointer(s_quad_grid__a_texCoord, 1, VertexAttribPointerType.Float, false, sizeof(float), ref quadGridTexture_Vertices[0]);
What does not:
GL.VertexAttribPointer(s_quad_grid__a_texCoord, 1, VertexAttribPointerType.Float, false, sizeof(float), quadGridTexture_Vertices);
Could somebody explain how to get the second one working? I'm looking for the equivalent of
glVertexAttribPointer (s_quad_grid__a_texCoord, 1, GL_FLOAT, GL_FALSE, 1 * sizeof(GLfloat), & quadGridTexture_Vertices[0] );
What I want to do with this knowledge is to put the Vertex data together with texture coordinates into one vertex array:
float[] test_Vertices = {-0.5f,0.5f,-0.5f, 0.0f, 0.5f,0.5f,-0.5f, 2.0f };
And then use something like this:
GL.VertexAttribPointer(s_quad_grid__a_position, 3, VertexAttribPointerType.Float, false, 4*sizeof(float), test_Vertices ); GL.VertexAttribPointer(s_quad_grid__a_texCoord, 1, VertexAttribPointerType.Float, false, sizeof(float), ref test_Vertices [0]);
The working C-Code:
glVertexAttribPointer(s_quad_grid__a_position, 3, GL_FLOAT, GL_FALSE, 4*sizeof(GLfloat), test_Vertices ); glVertexAttribPointer(s_quad_grid__a_texCoord, 1, GL_FLOAT, GL_FALSE, sizeof(GLfloat), &test_Vertices [0]);
(In this case 1D texture coordinates)
Thank you very much for helping out.