In an earlier tutorial, we defined glDrawArrays conceptually as the following the buffer to GL_ELEMENT_ARRAY_BUFFER and then call glDrawElements .Using OpenGL Vertex Array with glDrawArrays, glDrawElements and glDrawRangeElements.

glvertexattribpointer
opengl vbo
gldrawarrays example
gldrawelements indices
index buffer
gldrawelements example
opengl ebo
gldrawarrays gl_triangles

This means that the vertex buffer is scanned from the specified offset and every X (1 for points, 2 for lines, We use glDrawElements instead of glDrawArrays. The principle of indexing; Shared vs Separate; Indexed VBO in OpenGL; Filling the index buffer; Extra : the FPS and to draw the mesh, simply replace glDrawArrays by this : glDrawElements( GL_TRIANGLES, // mode indices.size(), // count News and discussion about OpenGL on all platforms. Tutorials. Arcsynthesis tutorial html mirror, Wayback archive, pdf · Learn OpenGL · ogldev Remove the call to glDrawArrays in RenderFunction and replace it with the glDrawElements(GL_TRIANGLES, 48, GL_UNSIGNED_BYTE, (GLvoid*)0); 22 Aug 2012 In a previous tutorial we've used “glDrawArrays” to draw a quad on the screen. With “glDrawElements” we can remove those duplicate vertex definitions. This means that you already know a bit about VAO and VBO's and glDrawArrays will draw from the currently bound vertex attribute arrays, which are "created" and bound themselves with glVertexAttribPointer If you''re using index arrays (with VBO) they''re probably around the same speed. If not, then DrawElements requires an array of indices to be glDrawArrays will draw from the currently bound vertex attribute arrays, which are "created" and bound themselves with glVertexAttribPointer