src/gallium/drivers/svga/svga_context.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 "os/os_process.h"
  29 #include "pipe/p_defines.h"
  30 #include "util/u_inlines.h"
  31 #include "pipe/p_screen.h"
  32 #include "util/u_memory.h"
  33 #include "util/u_bitmask.h"
  34 #include "util/u_string.h"
  35
  36 #include "svga_context.h"
  37 #include "svga_screen.h"
  38 #include "svga_surface.h"
  39 #include "svga_resource_texture.h"
  40 #include "svga_resource_buffer.h"
  41 #include "svga_resource.h"
  42 #include "svga_winsys.h"
  43 #include "svga_swtnl.h"
  44 #include "svga_draw.h"
  45 #include "svga_debug.h"
  46 #include "svga_state.h"
  47
  48 DEBUG_GET_ONCE_BOOL_OPTION(no_swtnl, "SVGA_NO_SWTNL", FALSE)
  49 DEBUG_GET_ONCE_BOOL_OPTION(force_swtnl, "SVGA_FORCE_SWTNL", FALSE);
  50 DEBUG_GET_ONCE_BOOL_OPTION(use_min_mipmap, "SVGA_USE_MIN_MIPMAP", FALSE);
  51 DEBUG_GET_ONCE_NUM_OPTION(disable_shader, "SVGA_DISABLE_SHADER", ~0);
  52 DEBUG_GET_ONCE_BOOL_OPTION(no_line_width, "SVGA_NO_LINE_WIDTH", FALSE);
  53 DEBUG_GET_ONCE_BOOL_OPTION(force_hw_line_stipple, "SVGA_FORCE_HW_LINE_STIPPLE", FALSE);
  54
  55 static void svga_destroy( struct pipe_context *pipe )
  56 {
  57    struct svga_context *svga = svga_context( pipe );
  58    struct svga_winsys_screen *sws = svga_screen(pipe->screen)->sws;
  59    unsigned shader;
  60
  61    util_blitter_destroy(svga->blitter);
  62
  63    svga_cleanup_framebuffer( svga );
  64    svga_cleanup_tss_binding( svga );
  65
  66    svga_hwtnl_destroy( svga->hwtnl );
  67
  68    svga_cleanup_vertex_state(svga);
  69
  70    svga->swc->destroy(svga->swc);
  71
  72    svga_destroy_swtnl( svga );
  73
  74    util_bitmask_destroy( svga->shader_id_bm );
  75
  76    for (shader = 0; shader < PIPE_SHADER_TYPES; ++shader) {
  77       pipe_resource_reference( &svga->curr.cbufs[shader].buffer, NULL );
  78       sws->surface_reference(sws, &svga->state.hw_draw.hw_cb[shader], NULL);
  79    }
  80
  81    FREE( svga );
  82 }
  83
  84
  85 /**
  86  * Check the process name to see if we're running with an app that
  87  * needs any particular work-arounds.
  88  */
  89 static void
  90 check_for_workarounds(struct svga_context *svga)
  91 {
  92    char name[1000];
  93
  94    if (!os_get_process_name(name, sizeof(name)))
  95       return;
  96
  97    if (util_strcmp(name, "sauer_client") == 0) {
  98       /*
  99        * Sauerbraten uses a two-pass rendering algorithm.  The first pass
 100        * draws a depth map.  The second pass draws the colors.  On the second
 101        * pass we wind up using the swtnl path because the game tries to use
 102        * a GLbyte[3] normal vector array (which the SVGA3D protocol does not
 103        * support.)  The vertices of the first and second passes don't quite
 104        * match so we see some depth/Z-fighting issues.  This work-around
 105        * causes us to map GLbyte[3] to SVGA3D_DECLTYPE_UBYTE4N and avoid the
 106        * swtnl path.  Despite not correctly converting normal vectors from
 107        * GLbyte[3] to float[4], the rendering looks OK.
 108        */
 109       debug_printf("Enabling sauerbraten GLbyte[3] work-around\n");
 110       svga->workaround.use_decltype_ubyte4n = TRUE;
 111    }
 112 }
 113
 114
 115 struct pipe_context *svga_context_create( struct pipe_screen *screen,
 116                                           void *priv )
 117 {
 118    struct svga_screen *svgascreen = svga_screen(screen);
 119    struct svga_context *svga = NULL;
 120    enum pipe_error ret;
 121
 122    svga = CALLOC_STRUCT(svga_context);
 123    if (svga == NULL)
 124       goto no_svga;
 125
 126    svga->pipe.screen = screen;
 127    svga->pipe.priv = priv;
 128    svga->pipe.destroy = svga_destroy;
 129    svga->pipe.clear = svga_clear;
 130
 131    svga->swc = svgascreen->sws->context_create(svgascreen->sws);
 132    if(!svga->swc)
 133       goto no_swc;
 134
 135    svga_init_resource_functions(svga);
 136    svga_init_blend_functions(svga);
 137    svga_init_blit_functions(svga);
 138    svga_init_depth_stencil_functions(svga);
 139    svga_init_draw_functions(svga);
 140    svga_init_flush_functions(svga);
 141    svga_init_misc_functions(svga);
 142    svga_init_rasterizer_functions(svga);
 143    svga_init_sampler_functions(svga);
 144    svga_init_fs_functions(svga);
 145    svga_init_vs_functions(svga);
 146    svga_init_vertex_functions(svga);
 147    svga_init_constbuffer_functions(svga);
 148    svga_init_query_functions(svga);
 149    svga_init_surface_functions(svga);
 150
 151
 152    /* debug */
 153    svga->debug.no_swtnl = debug_get_option_no_swtnl();
 154    svga->debug.force_swtnl = debug_get_option_force_swtnl();
 155    svga->debug.use_min_mipmap = debug_get_option_use_min_mipmap();
 156    svga->debug.disable_shader = debug_get_option_disable_shader();
 157    svga->debug.no_line_width = debug_get_option_no_line_width();
 158    svga->debug.force_hw_line_stipple = debug_get_option_force_hw_line_stipple();
 159
 160    svga->shader_id_bm = util_bitmask_create();
 161    if (svga->shader_id_bm == NULL)
 162       goto no_shader_bm;
 163
 164    svga->hwtnl = svga_hwtnl_create(svga);
 165    if (svga->hwtnl == NULL)
 166       goto no_hwtnl;
 167
 168    if (!svga_init_swtnl(svga))
 169       goto no_swtnl;
 170
 171    ret = svga_emit_initial_state( svga );
 172    if (ret != PIPE_OK)
 173       goto no_state;
 174
 175    /* Avoid shortcircuiting state with initial value of zero.
 176     */
 177    memset(&svga->state.hw_clear, 0xcd, sizeof(svga->state.hw_clear));
 178    memset(&svga->state.hw_clear.framebuffer, 0x0,
 179           sizeof(svga->state.hw_clear.framebuffer));
 180
 181    memset(&svga->state.hw_draw, 0xcd, sizeof(svga->state.hw_draw));
 182    memset(&svga->state.hw_draw.views, 0x0, sizeof(svga->state.hw_draw.views));
 183    svga->state.hw_draw.num_views = 0;
 184    memset(&svga->state.hw_draw.hw_cb, 0x0, sizeof(svga->state.hw_draw.hw_cb));
 185
 186    svga->dirty = ~0;
 187
 188    LIST_INITHEAD(&svga->dirty_buffers);
 189
 190    check_for_workarounds(svga);
 191
 192    return &svga->pipe;
 193
 194 no_state:
 195    svga_destroy_swtnl(svga);
 196 no_swtnl:
 197    svga_hwtnl_destroy( svga->hwtnl );
 198 no_hwtnl:
 199    util_bitmask_destroy( svga->shader_id_bm );
 200 no_shader_bm:
 201    svga->swc->destroy(svga->swc);
 202 no_swc:
 203    FREE(svga);
 204 no_svga:
 205    return NULL;
 206 }
 207
 208
 209 void svga_context_flush( struct svga_context *svga,
 210                          struct pipe_fence_handle **pfence )
 211 {
 212    struct svga_screen *svgascreen = svga_screen(svga->pipe.screen);
 213    struct pipe_fence_handle *fence = NULL;
 214
 215    svga->curr.nr_fbs = 0;
 216
 217    /* Ensure that texture dma uploads are processed
 218     * before submitting commands.
 219     */
 220    svga_context_flush_buffers(svga);
 221
 222    /* Flush pending commands to hardware:
 223     */
 224    svga->swc->flush(svga->swc, &fence);
 225
 226    svga_screen_cache_flush(svgascreen, fence);
 227
 228    /* To force the re-emission of rendertargets and texture sampler bindings on
 229     * the next command buffer.
 230     */
 231    svga->rebind.rendertargets = TRUE;
 232    svga->rebind.texture_samplers = TRUE;
 233    if (svga_have_gb_objects(svga)) {
 234       svga->rebind.vs = TRUE;
 235       svga->rebind.fs = TRUE;
 236    }
 237
 238    if (SVGA_DEBUG & DEBUG_SYNC) {
 239       if (fence)
 240          svga->pipe.screen->fence_finish( svga->pipe.screen, fence,
 241                                           PIPE_TIMEOUT_INFINITE);
 242    }
 243
 244    if(pfence)
 245       svgascreen->sws->fence_reference(svgascreen->sws, pfence, fence);
 246
 247    svgascreen->sws->fence_reference(svgascreen->sws, &fence, NULL);
 248 }
 249
 250
 251 void svga_hwtnl_flush_retry( struct svga_context *svga )
 252 {
 253    enum pipe_error ret = PIPE_OK;
 254
 255    ret = svga_hwtnl_flush( svga->hwtnl );
 256    if (ret == PIPE_ERROR_OUT_OF_MEMORY) {
 257       svga_context_flush( svga, NULL );
 258       ret = svga_hwtnl_flush( svga->hwtnl );
 259    }
 260
 261    assert(ret == 0);
 262 }
 263
 264
 265 /**
 266  * Flush the primitive queue if this buffer is referred.
 267  *
 268  * Otherwise DMA commands on the referred buffer will be emitted too late.
 269  */
 270 void svga_hwtnl_flush_buffer( struct svga_context *svga,
 271                               struct pipe_resource *buffer )
 272 {
 273    if (svga_hwtnl_is_buffer_referred(svga->hwtnl, buffer)) {
 274       svga_hwtnl_flush_retry(svga);
 275    }
 276 }
 277
 278
 279 /* Emit all operations pending on host surfaces.
 280  */
 281 void svga_surfaces_flush(struct svga_context *svga)
 282 {
 283    struct svga_screen *svgascreen = svga_screen(svga->pipe.screen);
 284    unsigned i;
 285
 286    /* Emit buffered drawing commands.
 287     */
 288    svga_hwtnl_flush_retry( svga );
 289
 290    /* Emit back-copy from render target view to texture.
 291     */
 292    for (i = 0; i < svgascreen->max_color_buffers; i++) {
 293       if (svga->curr.framebuffer.cbufs[i])
 294          svga_propagate_surface(svga, svga->curr.framebuffer.cbufs[i]);
 295    }
 296
 297    if (svga->curr.framebuffer.zsbuf)
 298       svga_propagate_surface(svga, svga->curr.framebuffer.zsbuf);
 299
 300 }
 301
 302
 303 struct svga_winsys_context *
 304 svga_winsys_context( struct pipe_context *pipe )
 305 {
 306    return svga_context( pipe )->swc;
 307 }