src/gallium/drivers/nv04/nv04_vbo.c

   1 #include "draw/draw_context.h"
   2 #include "pipe/p_context.h"
   3 #include "pipe/p_state.h"
   4
   5 #include "nv04_context.h"
   6 #include "nv04_state.h"
   7
   8 #include "nouveau/nouveau_channel.h"
   9 #include "nouveau/nouveau_pushbuf.h"
  10
  11 boolean nv04_draw_elements( struct pipe_context *pipe,
  12                     struct pipe_buffer *indexBuffer,
  13                     unsigned indexSize,
  14                     unsigned prim, unsigned start, unsigned count)
  15 {
  16         struct nv04_context *nv04 = nv04_context( pipe );
  17         struct draw_context *draw = nv04->draw;
  18         unsigned i;
  19
  20         /*
  21          * Map vertex buffers
  22          */
  23         for (i = 0; i < PIPE_MAX_ATTRIBS; i++) {
  24                 if (nv04->vertex_buffer[i].buffer) {
  25                         void *buf
  26                                 = pipe->winsys->_buffer_map(pipe->winsys,
  27                                                 nv04->vertex_buffer[i].buffer,
  28                                                 PIPE_BUFFER_USAGE_CPU_READ);
  29                         draw_set_mapped_vertex_buffer(draw, i, buf);
  30                 }
  31         }
  32         /* Map index buffer, if present */
  33         if (indexBuffer) {
  34                 void *mapped_indexes
  35                         = pipe->winsys->_buffer_map(pipe->winsys, indexBuffer,
  36                                         PIPE_BUFFER_USAGE_CPU_READ);
  37                 draw_set_mapped_element_buffer(draw, indexSize, mapped_indexes);
  38         }
  39         else {
  40                 /* no index/element buffer */
  41                 draw_set_mapped_element_buffer(draw, 0, NULL);
  42         }
  43
  44         /* draw! */
  45         draw_arrays(nv04->draw, prim, start, count);
  46
  47         /*
  48          * unmap vertex/index buffers
  49          */
  50         for (i = 0; i < PIPE_MAX_ATTRIBS; i++) {
  51                 if (nv04->vertex_buffer[i].buffer) {
  52                         pipe->winsys->_buffer_unmap(pipe->winsys, nv04->vertex_buffer[i].buffer);
  53                         draw_set_mapped_vertex_buffer(draw, i, NULL);
  54                 }
  55         }
  56         if (indexBuffer) {
  57                 pipe->winsys->_buffer_unmap(pipe->winsys, indexBuffer);
  58                 draw_set_mapped_element_buffer(draw, 0, NULL);
  59         }
  60
  61         return TRUE;
  62 }
  63
  64 boolean nv04_draw_arrays( struct pipe_context *pipe,
  65                                  unsigned prim, unsigned start, unsigned count)
  66 {
  67         return nv04_draw_elements(pipe, NULL, 0, prim, start, count);
  68 }
  69
  70
  71