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 "util/u_framebuffer.h"
  27 #include "util/u_inlines.h"
  28 #include "util/u_pstipple.h"
  29
  30 #include "svga_cmd.h"
  31 #include "svga_context.h"
  32 #include "svga_screen.h"
  33 #include "svga_surface.h"
  34 #include "svga_resource_texture.h"
  35
  36
  37 static void
  38 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
  85 svga_cleanup_framebuffer(struct svga_context *svga)
  86 {
  87    struct svga_screen *svgascreen = svga_screen(svga->pipe.screen);
  88    struct pipe_framebuffer_state *curr = &svga->curr.framebuffer;
  89    struct pipe_framebuffer_state *hw = &svga->state.hw_clear.framebuffer;
  90    unsigned i;
  91
  92    for (i = 0; i < svgascreen->max_color_buffers; i++) {
  93       pipe_surface_reference(&curr->cbufs[i], NULL);
  94       pipe_surface_reference(&hw->cbufs[i], NULL);
  95    }
  96
  97    pipe_surface_reference(&curr->zsbuf, NULL);
  98    pipe_surface_reference(&hw->zsbuf, NULL);
  99 }
 100
 101
 102 #define DEPTH_BIAS_SCALE_FACTOR_D16    ((float)(1<<15))
 103 #define DEPTH_BIAS_SCALE_FACTOR_D24S8  ((float)(1<<23))
 104 #define DEPTH_BIAS_SCALE_FACTOR_D32    ((float)(1<<31))
 105
 106
 107 static void
 108 svga_set_framebuffer_state(struct pipe_context *pipe,
 109                            const struct pipe_framebuffer_state *fb)
 110 {
 111    struct svga_context *svga = svga_context(pipe);
 112    struct pipe_framebuffer_state *dst = &svga->curr.framebuffer;
 113    unsigned i;
 114
 115    /* make sure any pending drawing calls are flushed before changing
 116     * the framebuffer state
 117     */
 118    svga_hwtnl_flush_retry(svga);
 119
 120    dst->width = fb->width;
 121    dst->height = fb->height;
 122    dst->nr_cbufs = fb->nr_cbufs;
 123
 124    /* Check if we need to propagate any of the render targets which we may
 125     * be unbinding.
 126     */
 127    for (i = 0; i < dst->nr_cbufs; i++) {
 128       struct pipe_surface *s = i < fb->nr_cbufs ? fb->cbufs[i] : NULL;
 129       if (dst->cbufs[i] && dst->cbufs[i] != s) {
 130          if (svga_surface_needs_propagation(dst->cbufs[i])) {
 131             svga_propagate_surface(svga, dst->cbufs[i]);
 132          }
 133       }
 134    }
 135
 136    /* Check that all surfaces are the same size.
 137     * Actually, the virtual hardware may support rendertargets with
 138     * different size, depending on the host API and driver,
 139     */
 140    {
 141       int width = 0, height = 0;
 142       if (fb->zsbuf) {
 143          width = fb->zsbuf->width;
 144          height = fb->zsbuf->height;
 145       }
 146       for (i = 0; i < fb->nr_cbufs; ++i) {
 147          if (fb->cbufs[i]) {
 148             if (width && height) {
 149                if (fb->cbufs[i]->width != width ||
 150                    fb->cbufs[i]->height != height) {
 151                   debug_warning("Mixed-size color and depth/stencil surfaces "
 152                                 "may not work properly");
 153                }
 154             }
 155             else {
 156                width = fb->cbufs[i]->width;
 157                height = fb->cbufs[i]->height;
 158             }
 159          }
 160       }
 161    }
 162
 163    util_copy_framebuffer_state(dst, fb);
 164
 165    /* Set the rendered-to flags */
 166    for (i = 0; i < dst->nr_cbufs; i++) {
 167       struct pipe_surface *s = dst->cbufs[i];
 168       if (s) {
 169          struct svga_texture *t = svga_texture(s->texture);
 170          svga_set_texture_rendered_to(t, s->u.tex.first_layer, s->u.tex.level);
 171       }
 172    }
 173
 174    if (svga->curr.framebuffer.zsbuf) {
 175       switch (svga->curr.framebuffer.zsbuf->format) {
 176       case PIPE_FORMAT_Z16_UNORM:
 177          svga->curr.depthscale = 1.0f / DEPTH_BIAS_SCALE_FACTOR_D16;
 178          break;
 179       case PIPE_FORMAT_Z24_UNORM_S8_UINT:
 180       case PIPE_FORMAT_Z24X8_UNORM:
 181       case PIPE_FORMAT_S8_UINT_Z24_UNORM:
 182       case PIPE_FORMAT_X8Z24_UNORM:
 183          svga->curr.depthscale = 1.0f / DEPTH_BIAS_SCALE_FACTOR_D24S8;
 184          break;
 185       case PIPE_FORMAT_Z32_UNORM:
 186          svga->curr.depthscale = 1.0f / DEPTH_BIAS_SCALE_FACTOR_D32;
 187          break;
 188       case PIPE_FORMAT_Z32_FLOAT:
 189          svga->curr.depthscale = 1.0f / ((float)(1<<23));
 190          break;
 191       default:
 192          svga->curr.depthscale = 0.0f;
 193          break;
 194       }
 195
 196       /* Set rendered-to flag */
 197       {
 198          struct pipe_surface *s = dst->zsbuf;
 199          struct svga_texture *t = svga_texture(s->texture);
 200          svga_set_texture_rendered_to(t, s->u.tex.first_layer, s->u.tex.level);
 201       }
 202    }
 203    else {
 204       svga->curr.depthscale = 0.0f;
 205    }
 206
 207    svga->dirty |= SVGA_NEW_FRAME_BUFFER;
 208 }
 209
 210
 211 static void
 212 svga_set_clip_state(struct pipe_context *pipe,
 213                     const struct pipe_clip_state *clip)
 214 {
 215    struct svga_context *svga = svga_context(pipe);
 216
 217    svga->curr.clip = *clip; /* struct copy */
 218
 219    svga->dirty |= SVGA_NEW_CLIP;
 220 }
 221
 222
 223 static void
 224 svga_set_viewport_states(struct pipe_context *pipe,
 225                          unsigned start_slot,
 226                          unsigned num_viewports,
 227                          const struct pipe_viewport_state *viewports)
 228 {
 229    struct svga_context *svga = svga_context(pipe);
 230
 231    svga->curr.viewport = *viewports; /* struct copy */
 232
 233    svga->dirty |= SVGA_NEW_VIEWPORT;
 234 }
 235
 236
 237 /**
 238  * Called by state tracker to specify a callback function the driver
 239  * can use to report info back to the state tracker.
 240  */
 241 static void
 242 svga_set_debug_callback(struct pipe_context *pipe,
 243                         const struct pipe_debug_callback *cb)
 244 {
 245    struct svga_context *svga = svga_context(pipe);
 246
 247    if (cb) {
 248       svga->debug.callback = *cb;
 249       svga->swc->debug_callback = &svga->debug.callback;
 250    } else {
 251       memset(&svga->debug.callback, 0, sizeof(svga->debug.callback));
 252       svga->swc->debug_callback = NULL;
 253    }
 254 }
 255
 256
 257 void
 258 svga_init_misc_functions(struct svga_context *svga)
 259 {
 260    svga->pipe.set_scissor_states = svga_set_scissor_states;
 261    svga->pipe.set_polygon_stipple = svga_set_polygon_stipple;
 262    svga->pipe.set_framebuffer_state = svga_set_framebuffer_state;
 263    svga->pipe.set_clip_state = svga_set_clip_state;
 264    svga->pipe.set_viewport_states = svga_set_viewport_states;
 265    svga->pipe.set_debug_callback = svga_set_debug_callback;
 266 }