src/gallium/drivers/svga/svga_pipe_misc.c

   1 /**********************************************************
   2  * Copyright 2008-2009 VMware, Inc.  All rights reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person
   5  * obtaining a copy of this software and associated documentation
   6  * files (the "Software"), to deal in the Software without
   7  * restriction, including without limitation the rights to use, copy,
   8  * modify, merge, publish, distribute, sublicense, and/or sell copies
   9  * of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  19  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  20  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  **********************************************************/
  25
  26 #include "svga_cmd.h"
  27
  28 #include "util/u_framebuffer.h"
  29 #include "util/u_inlines.h"
  30 #include "util/u_pstipple.h"
  31
  32 #include "svga_context.h"
  33 #include "svga_screen.h"
  34 #include "svga_surface.h"
  35 #include "svga_resource_texture.h"
  36
  37
  38 static void svga_set_scissor_states( struct pipe_context *pipe,
  39                                      unsigned start_slot,
  40                                      unsigned num_scissors,
  41                                      const struct pipe_scissor_state *scissors )
  42 {
  43    struct svga_context *svga = svga_context(pipe);
  44
  45    memcpy( &svga->curr.scissor, scissors, sizeof(*scissors) );
  46    svga->dirty |= SVGA_NEW_SCISSOR;
  47 }
  48
  49
  50 static void
  51 svga_set_polygon_stipple(struct pipe_context *pipe,
  52                          const struct pipe_poly_stipple *stipple)
  53 {
  54    struct svga_context *svga = svga_context(pipe);
  55
  56    /* release old texture */
  57    pipe_resource_reference(&svga->polygon_stipple.texture, NULL);
  58
  59    /* release old sampler view */
  60    if (svga->polygon_stipple.sampler_view) {
  61       pipe->sampler_view_destroy(pipe,
  62                                  &svga->polygon_stipple.sampler_view->base);
  63    }
  64
  65    /* create new stipple texture */
  66    svga->polygon_stipple.texture =
  67       util_pstipple_create_stipple_texture(pipe, stipple->stipple);
  68
  69    /* create new sampler view */
  70    svga->polygon_stipple.sampler_view =
  71       (struct svga_pipe_sampler_view *)
  72       util_pstipple_create_sampler_view(pipe,
  73                                         svga->polygon_stipple.texture);
  74
  75    /* allocate sampler state, if first time */
  76    if (!svga->polygon_stipple.sampler) {
  77       svga->polygon_stipple.sampler = util_pstipple_create_sampler(pipe);
  78    }
  79
  80    svga->dirty |= SVGA_NEW_STIPPLE;
  81 }
  82
  83
  84 void svga_cleanup_framebuffer(struct svga_context *svga)
  85 {
  86    struct svga_screen *svgascreen = svga_screen(svga->pipe.screen);
  87    struct pipe_framebuffer_state *curr = &svga->curr.framebuffer;
  88    struct pipe_framebuffer_state *hw = &svga->state.hw_clear.framebuffer;
  89    unsigned i;
  90
  91    for (i = 0; i < svgascreen->max_color_buffers; i++) {
  92       pipe_surface_reference(&curr->cbufs[i], NULL);
  93       pipe_surface_reference(&hw->cbufs[i], NULL);
  94    }
  95
  96    pipe_surface_reference(&curr->zsbuf, NULL);
  97    pipe_surface_reference(&hw->zsbuf, NULL);
  98 }
  99
 100
 101 #define DEPTH_BIAS_SCALE_FACTOR_D16    ((float)(1<<15))
 102 #define DEPTH_BIAS_SCALE_FACTOR_D24S8  ((float)(1<<23))
 103 #define DEPTH_BIAS_SCALE_FACTOR_D32    ((float)(1<<31))
 104
 105
 106 static void svga_set_framebuffer_state(struct pipe_context *pipe,
 107                                        const struct pipe_framebuffer_state *fb)
 108 {
 109    struct svga_context *svga = svga_context(pipe);
 110    struct pipe_framebuffer_state *dst = &svga->curr.framebuffer;
 111    boolean propagate = FALSE;
 112    unsigned i;
 113
 114    /* make sure any pending drawing calls are flushed before changing
 115     * the framebuffer state
 116     */
 117    svga_hwtnl_flush_retry(svga);
 118
 119    dst->width = fb->width;
 120    dst->height = fb->height;
 121    dst->nr_cbufs = fb->nr_cbufs;
 122
 123    /* check if we need to propagate any of the target surfaces */
 124    for (i = 0; i < dst->nr_cbufs; i++) {
 125       struct pipe_surface *s = i < fb->nr_cbufs ? fb->cbufs[i] : NULL;
 126       if (dst->cbufs[i] && dst->cbufs[i] != s) {
 127          if (svga_surface_needs_propagation(dst->cbufs[i])) {
 128             propagate = TRUE;
 129             break;
 130          }
 131       }
 132    }
 133
 134    if (propagate) {
 135       for (i = 0; i < dst->nr_cbufs; i++) {
 136          struct pipe_surface *s = i < fb->nr_cbufs ? fb->cbufs[i] : NULL;
 137          if (dst->cbufs[i] && dst->cbufs[i] != s)
 138             svga_propagate_surface(svga, dst->cbufs[i]);
 139       }
 140    }
 141
 142    /* Check that all surfaces are the same size.
 143     * Actually, the virtual hardware may support rendertargets with
 144     * different size, depending on the host API and driver,
 145     */
 146    {
 147       int width = 0, height = 0;
 148       if (fb->zsbuf) {
 149          width = fb->zsbuf->width;
 150          height = fb->zsbuf->height;
 151       }
 152       for (i = 0; i < fb->nr_cbufs; ++i) {
 153          if (fb->cbufs[i]) {
 154             if (width && height) {
 155                if (fb->cbufs[i]->width != width ||
 156                    fb->cbufs[i]->height != height) {
 157                   debug_warning("Mixed-size color and depth/stencil surfaces "
 158                                 "may not work properly");
 159                }
 160             }
 161             else {
 162                width = fb->cbufs[i]->width;
 163                height = fb->cbufs[i]->height;
 164             }
 165          }
 166       }
 167    }
 168
 169    util_copy_framebuffer_state(dst, fb);
 170
 171    /* Set the rendered-to flags */
 172    for (i = 0; i < dst->nr_cbufs; i++) {
 173       struct pipe_surface *s = dst->cbufs[i];
 174       if (s) {
 175          struct svga_texture *t = svga_texture(s->texture);
 176          svga_set_texture_rendered_to(t, s->u.tex.first_layer, s->u.tex.level);
 177       }
 178    }
 179
 180    if (svga->curr.framebuffer.zsbuf)
 181    {
 182       switch (svga->curr.framebuffer.zsbuf->format) {
 183       case PIPE_FORMAT_Z16_UNORM:
 184          svga->curr.depthscale = 1.0f / DEPTH_BIAS_SCALE_FACTOR_D16;
 185          break;
 186       case PIPE_FORMAT_Z24_UNORM_S8_UINT:
 187       case PIPE_FORMAT_Z24X8_UNORM:
 188       case PIPE_FORMAT_S8_UINT_Z24_UNORM:
 189       case PIPE_FORMAT_X8Z24_UNORM:
 190          svga->curr.depthscale = 1.0f / DEPTH_BIAS_SCALE_FACTOR_D24S8;
 191          break;
 192       case PIPE_FORMAT_Z32_UNORM:
 193          svga->curr.depthscale = 1.0f / DEPTH_BIAS_SCALE_FACTOR_D32;
 194          break;
 195       case PIPE_FORMAT_Z32_FLOAT:
 196          svga->curr.depthscale = 1.0f / ((float)(1<<23));
 197          break;
 198       default:
 199          svga->curr.depthscale = 0.0f;
 200          break;
 201       }
 202
 203       /* Set rendered-to flag */
 204       {
 205          struct pipe_surface *s = dst->zsbuf;
 206          struct svga_texture *t = svga_texture(s->texture);
 207          svga_set_texture_rendered_to(t, s->u.tex.first_layer, s->u.tex.level);
 208       }
 209    }
 210    else {
 211       svga->curr.depthscale = 0.0f;
 212    }
 213
 214    svga->dirty |= SVGA_NEW_FRAME_BUFFER;
 215 }
 216
 217
 218
 219 static void svga_set_clip_state( struct pipe_context *pipe,
 220                                  const struct pipe_clip_state *clip )
 221 {
 222    struct svga_context *svga = svga_context(pipe);
 223
 224    svga->curr.clip = *clip; /* struct copy */
 225
 226    svga->dirty |= SVGA_NEW_CLIP;
 227 }
 228
 229
 230
 231 /* Called when driver state tracker notices changes to the viewport
 232  * matrix:
 233  */
 234 static void svga_set_viewport_states( struct pipe_context *pipe,
 235                                       unsigned start_slot,
 236                                       unsigned num_viewports,
 237                                       const struct pipe_viewport_state *viewports )
 238 {
 239    struct svga_context *svga = svga_context(pipe);
 240
 241    svga->curr.viewport = *viewports; /* struct copy */
 242
 243    svga->dirty |= SVGA_NEW_VIEWPORT;
 244 }
 245
 246
 247 /**
 248  * Called by state tracker to specify a callback function the driver
 249  * can use to report info back to the state tracker.
 250  */
 251 static void
 252 svga_set_debug_callback(struct pipe_context *pipe,
 253                         const struct pipe_debug_callback *cb)
 254 {
 255    struct svga_context *svga = svga_context(pipe);
 256
 257    if (cb)
 258       svga->debug.callback = *cb;
 259    else
 260       memset(&svga->debug.callback, 0, sizeof(svga->debug.callback));
 261 }
 262
 263
 264 void svga_init_misc_functions( struct svga_context *svga )
 265 {
 266    svga->pipe.set_scissor_states = svga_set_scissor_states;
 267    svga->pipe.set_polygon_stipple = svga_set_polygon_stipple;
 268    svga->pipe.set_framebuffer_state = svga_set_framebuffer_state;
 269    svga->pipe.set_clip_state = svga_set_clip_state;
 270    svga->pipe.set_viewport_states = svga_set_viewport_states;
 271    svga->pipe.set_debug_callback = svga_set_debug_callback;
 272 }
 273
 274