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Hi, for example, if I have glVertex3f(0.75, 0.75, 1.0) how the video card processes these three floats? Does the card work with floats? Does (mesa? gallium? driver?) process these three input floats before it is sent to the card? Where is the code for it? If you say the floats are memory mapped as in exec->vtx.buffer_map = (GLfloat *)ctx->Driver.MapBufferRange(...) I would say from what I

...y mapped) input floats. So where is the piece > of > code that instructs the card to fetch those three (possibly processed) input > floats > and send them to the card? > > Thanks in advance. The vbo module converts this to the equivalent of glGenBuffers(1, &buf) glBindBuffer(GL_ARRAY_BUFFER, buf) glBufferData(GL_ARRAY_BUFFER, ...) foo = glMapBuffer(buf) write vertex values to foo glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, 0); draw Hope that helps, -ilia

...> > code that instructs the card to fetch those three (possibly processed) > input > > floats > > and send them to the card? > > > > Thanks in advance. > > The vbo module converts this to the equivalent of > > glGenBuffers(1, &buf) > glBindBuffer(GL_ARRAY_BUFFER, buf) > glBufferData(GL_ARRAY_BUFFER, ...) > foo = glMapBuffer(buf) > write vertex values to foo > glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, 0); > draw > > Hope that helps, > > -ilia > -------------- next part -------------- An HTML attachment was scrubbed...