vbo_copy_vertices vbo_exec_bind_arrays vbo_exec_debug_verts vbo_exec_vtx_flush

static GLuint vbo_copy_vertices ( struct vbo_exec_context *  exec ) [static] Definition at line 67 of file vbo_exec_draw.c. Referenced by vbo_exec_vtx_flush(). { GLuint nr = exec->vtx.prim[exec->vtx.prim_count-1].count; GLuint ovf, i; GLuint sz = exec->vtx.vertex_size; GLfloat *dst = exec->vtx.copied.buffer; GLfloat *src = ((GLfloat *)exec->vtx.buffer_map + exec->vtx.prim[exec->vtx.prim_count-1].start * exec->vtx.vertex_size); switch( exec->ctx->Driver.CurrentExecPrimitive ) { case GL_POINTS: return 0; case GL_LINES: ovf = nr&1; for (i = 0 ; i < ovf ; i++) _mesa_memcpy( dst+i*sz, src+(nr-ovf+i)*sz, sz * sizeof(GLfloat) ); return i; case GL_TRIANGLES: ovf = nr%3; for (i = 0 ; i < ovf ; i++) _mesa_memcpy( dst+i*sz, src+(nr-ovf+i)*sz, sz * sizeof(GLfloat) ); return i; case GL_QUADS: ovf = nr&3; for (i = 0 ; i < ovf ; i++) _mesa_memcpy( dst+i*sz, src+(nr-ovf+i)*sz, sz * sizeof(GLfloat) ); return i; case GL_LINE_STRIP: if (nr == 0) return 0; else { _mesa_memcpy( dst, src+(nr-1)*sz, sz * sizeof(GLfloat) ); return 1; } case GL_LINE_LOOP: case GL_TRIANGLE_FAN: case GL_POLYGON: if (nr == 0) return 0; else if (nr == 1) { _mesa_memcpy( dst, src+0, sz * sizeof(GLfloat) ); return 1; } else { _mesa_memcpy( dst, src+0, sz * sizeof(GLfloat) ); _mesa_memcpy( dst+sz, src+(nr-1)*sz, sz * sizeof(GLfloat) ); return 2; } case GL_TRIANGLE_STRIP: /* no parity issue, but need to make sure the tri is not drawn twice */ if (nr & 1) { exec->vtx.prim[exec->vtx.prim_count-1].count--; } /* fallthrough */ case GL_QUAD_STRIP: switch (nr) { case 0: ovf = 0; break; case 1: ovf = 1; break; default: ovf = 2 + (nr&1); break; } for (i = 0 ; i < ovf ; i++) _mesa_memcpy( dst+i*sz, src+(nr-ovf+i)*sz, sz * sizeof(GLfloat) ); return i; case PRIM_OUTSIDE_BEGIN_END: return 0; default: assert(0); return 0; } }