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 that all surfaces are the same size.
 125     * Actually, the virtual hardware may support rendertargets with
 126     * different size, depending on the host API and driver,
 127     */
 128    {
 129       int width = 0, height = 0;
 130       if (fb->zsbuf) {
 131          width = fb->zsbuf->width;
 132          height = fb->zsbuf->height;
 133       }
 134       for (i = 0; i < fb->nr_cbufs; ++i) {
 135          if (fb->cbufs[i]) {
 136             if (width && height) {
 137                if (fb->cbufs[i]->width != width ||
 138                    fb->cbufs[i]->height != height) {
 139                   debug_warning("Mixed-size color and depth/stencil surfaces "
 140                                 "may not work properly");
 141                }
 142             }
 143             else {
 144                width = fb->cbufs[i]->width;
 145                height = fb->cbufs[i]->height;
 146             }
 147          }
 148       }
 149    }
 150
 151    util_copy_framebuffer_state(dst, fb);
 152
 153    if (svga->curr.framebuffer.zsbuf) {
 154       switch (svga->curr.framebuffer.zsbuf->format) {
 155       case PIPE_FORMAT_Z16_UNORM:
 156          svga->curr.depthscale = 1.0f / DEPTH_BIAS_SCALE_FACTOR_D16;
 157          break;
 158       case PIPE_FORMAT_Z24_UNORM_S8_UINT:
 159       case PIPE_FORMAT_Z24X8_UNORM:
 160       case PIPE_FORMAT_S8_UINT_Z24_UNORM:
 161       case PIPE_FORMAT_X8Z24_UNORM:
 162          svga->curr.depthscale = 1.0f / DEPTH_BIAS_SCALE_FACTOR_D24S8;
 163          break;
 164       case PIPE_FORMAT_Z32_UNORM:
 165          svga->curr.depthscale = 1.0f / DEPTH_BIAS_SCALE_FACTOR_D32;
 166          break;
 167       case PIPE_FORMAT_Z32_FLOAT:
 168          svga->curr.depthscale = 1.0f / ((float)(1<<23));
 169          break;
 170       default:
 171          svga->curr.depthscale = 0.0f;
 172          break;
 173       }
 174    }
 175    else {
 176       svga->curr.depthscale = 0.0f;
 177    }
 178
 179    svga->dirty |= SVGA_NEW_FRAME_BUFFER;
 180 }
 181
 182
 183 static void
 184 svga_set_clip_state(struct pipe_context *pipe,
 185                     const struct pipe_clip_state *clip)
 186 {
 187    struct svga_context *svga = svga_context(pipe);
 188
 189    svga->curr.clip = *clip; /* struct copy */
 190
 191    svga->dirty |= SVGA_NEW_CLIP;
 192 }
 193
 194
 195 static void
 196 svga_set_viewport_states(struct pipe_context *pipe,
 197                          unsigned start_slot,
 198                          unsigned num_viewports,
 199                          const struct pipe_viewport_state *viewports)
 200 {
 201    struct svga_context *svga = svga_context(pipe);
 202
 203    svga->curr.viewport = *viewports; /* struct copy */
 204
 205    svga->dirty |= SVGA_NEW_VIEWPORT;
 206 }
 207
 208
 209 /**
 210  * Called by state tracker to specify a callback function the driver
 211  * can use to report info back to the gallium frontend.
 212  */
 213 static void
 214 svga_set_debug_callback(struct pipe_context *pipe,
 215                         const struct pipe_debug_callback *cb)
 216 {
 217    struct svga_context *svga = svga_context(pipe);
 218
 219    if (cb) {
 220       svga->debug.callback = *cb;
 221       svga->swc->debug_callback = &svga->debug.callback;
 222    } else {
 223       memset(&svga->debug.callback, 0, sizeof(svga->debug.callback));
 224       svga->swc->debug_callback = NULL;
 225    }
 226 }
 227
 228
 229 void
 230 svga_init_misc_functions(struct svga_context *svga)
 231 {
 232    svga->pipe.set_scissor_states = svga_set_scissor_states;
 233    svga->pipe.set_polygon_stipple = svga_set_polygon_stipple;
 234    svga->pipe.set_framebuffer_state = svga_set_framebuffer_state;
 235    svga->pipe.set_clip_state = svga_set_clip_state;
 236    svga->pipe.set_viewport_states = svga_set_viewport_states;
 237    svga->pipe.set_debug_callback = svga_set_debug_callback;
 238 }