src/gallium/drivers/i965/brw_pipe_fb.c

   1 #include "util/u_math.h"
   2 #include "pipe/p_context.h"
   3 #include "pipe/p_state.h"
   4
   5 #include "brw_context.h"
   6
   7 /**
   8  * called from intelDrawBuffer()
   9  */
  10 static void brw_set_framebuffer_state( struct pipe_context *pipe,
  11                                        const struct pipe_framebuffer_state *fb )
  12 {
  13    struct brw_context *brw = brw_context(pipe);
  14    unsigned i;
  15
  16    /* Dimensions:
  17     */
  18    if (brw->curr.fb.width != fb->width ||
  19        brw->curr.fb.height != fb->height) {
  20       brw->curr.fb.width = fb->width;
  21       brw->curr.fb.height = fb->height;
  22       brw->state.dirty.mesa |= PIPE_NEW_FRAMEBUFFER_DIMENSIONS;
  23    }
  24
  25    /* Z/Stencil
  26     */
  27    if (brw->curr.fb.zsbuf != fb->zsbuf) {
  28       pipe_surface_reference(&brw->curr.fb.zsbuf, fb->zsbuf);
  29       brw->state.dirty.mesa |= PIPE_NEW_DEPTH_BUFFER;
  30    }
  31
  32    /* Color buffers:
  33     */
  34    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
  35       if (brw->curr.fb.cbufs[i] != fb->cbufs[i]) {
  36          brw->state.dirty.mesa |= PIPE_NEW_COLOR_BUFFERS;
  37          pipe_surface_reference(&brw->curr.fb.cbufs[i], fb->cbufs[i]);
  38       }
  39    }
  40
  41    if (brw->curr.fb.nr_cbufs != fb->nr_cbufs) {
  42       brw->curr.fb.nr_cbufs = MIN2(BRW_MAX_DRAW_BUFFERS, fb->nr_cbufs);
  43       brw->state.dirty.mesa |= PIPE_NEW_NR_CBUFS;
  44    }
  45 }
  46
  47
  48 static void brw_set_viewport_state( struct pipe_context *pipe,
  49                                     const struct pipe_viewport_state *viewport )
  50 {
  51    struct brw_context *brw = brw_context(pipe);
  52
  53    brw->curr.viewport = *viewport;
  54    brw->curr.ccv.min_depth = viewport->scale[2] * -1.0 + viewport->translate[2];
  55    brw->curr.ccv.max_depth = viewport->scale[2] *  1.0 + viewport->translate[2];
  56
  57    if (0)
  58       debug_printf("%s depth range %f .. %f\n",
  59                    __FUNCTION__,
  60                    brw->curr.ccv.min_depth,
  61                    brw->curr.ccv.max_depth);
  62
  63    brw->state.dirty.mesa |= PIPE_NEW_VIEWPORT;
  64 }
  65
  66
  67 void brw_pipe_framebuffer_init( struct brw_context *brw )
  68 {
  69    brw->base.set_framebuffer_state = brw_set_framebuffer_state;
  70    brw->base.set_viewport_state = brw_set_viewport_state;
  71 }
  72
  73 void brw_pipe_framebuffer_cleanup( struct brw_context *brw )
  74 {
  75    struct pipe_framebuffer_state *fb = &brw->curr.fb;
  76    int i;
  77
  78    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
  79       pipe_surface_reference(&fb->cbufs[i], NULL);
  80    }
  81
  82    pipe_surface_reference(&fb->zsbuf, NULL);
  83 }