src/gallium/drivers/iris/iris_clear.c

   1 /*
   2  * Copyright © 2017 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  */
  23 #include <stdio.h>
  24 #include <errno.h>
  25 #include "pipe/p_defines.h"
  26 #include "pipe/p_state.h"
  27 #include "pipe/p_context.h"
  28 #include "pipe/p_screen.h"
  29 #include "util/u_inlines.h"
  30 #include "util/u_format.h"
  31 #include "util/u_upload_mgr.h"
  32 #include "util/ralloc.h"
  33 #include "iris_context.h"
  34 #include "iris_resource.h"
  35 #include "iris_screen.h"
  36 #include "intel/compiler/brw_compiler.h"
  37
  38 /**
  39  * The pipe->clear() driver hook.
  40  *
  41  * This clears buffers attached to the current draw framebuffer.
  42  */
  43 static void
  44 iris_clear(struct pipe_context *ctx,
  45            unsigned buffers,
  46            const union pipe_color_union *p_color,
  47            double depth,
  48            unsigned stencil)
  49 {
  50    struct iris_context *ice = (void *) ctx;
  51    struct pipe_framebuffer_state *cso_fb = &ice->state.framebuffer;
  52    assert(buffers != 0);
  53
  54    struct iris_batch *batch = &ice->render_batch;
  55
  56    iris_batch_maybe_flush(batch, 1500);
  57
  58    struct blorp_batch blorp_batch;
  59    blorp_batch_init(&ice->blorp, &blorp_batch, batch, 0);
  60
  61    if (buffers & PIPE_CLEAR_DEPTHSTENCIL) {
  62       struct pipe_surface *psurf = cso_fb->zsbuf;
  63       struct blorp_surf z_surf;
  64       const unsigned num_layers =
  65          psurf->u.tex.last_layer - psurf->u.tex.first_layer + 1;
  66
  67       iris_blorp_surf_for_resource(&z_surf, psurf->texture,
  68                                    ISL_AUX_USAGE_NONE, true);
  69
  70       blorp_clear_depth_stencil(&blorp_batch, &z_surf, NULL /* XXX */,
  71                                 psurf->u.tex.level, psurf->u.tex.first_layer,
  72                                 num_layers, 0, 0, psurf->width, psurf->height,
  73                                 (buffers & PIPE_CLEAR_DEPTH) != 0,
  74                                 depth, 0 /* XXX */, stencil);
  75
  76       if (buffers & PIPE_CLEAR_STENCIL)
  77          fprintf(stderr, "XXX: stencil clears not implemented\n");
  78    }
  79
  80    if (buffers & PIPE_CLEAR_COLOR) {
  81       /* pipe_color_union and isl_color_value are interchangeable */
  82       union isl_color_value *clear_color = (void *) p_color;
  83       bool color_write_disable[4] = { false, false, false, false };
  84
  85       for (unsigned i = 0; i < cso_fb->nr_cbufs; i++) {
  86          if (buffers & (PIPE_CLEAR_COLOR0 << i)) {
  87             struct pipe_surface *psurf = cso_fb->cbufs[i];
  88             struct iris_surface *isurf = (void *) psurf;
  89             struct blorp_surf surf;
  90
  91             iris_blorp_surf_for_resource(&surf, psurf->texture,
  92                                          ISL_AUX_USAGE_NONE, true);
  93
  94             blorp_clear(&blorp_batch, &surf, isurf->view.format,
  95                         ISL_SWIZZLE_IDENTITY,
  96                         psurf->u.tex.level, psurf->u.tex.first_layer,
  97                         psurf->u.tex.last_layer - psurf->u.tex.first_layer + 1,
  98                         0, 0, psurf->width, psurf->height,
  99                         *clear_color, color_write_disable);
 100          }
 101       }
 102    }
 103
 104    blorp_batch_finish(&blorp_batch);
 105 }
 106
 107 static void
 108 iris_clear_render_target(struct pipe_context *ctx,
 109                          struct pipe_surface *dst,
 110                          const union pipe_color_union *color,
 111                          unsigned dst_x, unsigned dst_y,
 112                          unsigned width, unsigned height,
 113                          bool render_condition_enabled)
 114 {
 115    fprintf(stderr, "XXX: iris_clear_render_target\n");
 116 }
 117
 118 static void
 119 iris_clear_depth_stencil(struct pipe_context *ctx,
 120                          struct pipe_surface *dst,
 121                          unsigned clear_flags,
 122                          double depth,
 123                          unsigned stencil,
 124                          unsigned dst_x, unsigned dst_y,
 125                          unsigned width, unsigned height,
 126                          bool render_condition_enabled)
 127 {
 128    fprintf(stderr, "XXX: iris_clear_depth_stencil\n");
 129 }
 130
 131 void
 132 iris_init_clear_functions(struct pipe_context *ctx)
 133 {
 134    ctx->clear = iris_clear;
 135    ctx->clear_render_target = iris_clear_render_target;
 136    ctx->clear_depth_stencil = iris_clear_depth_stencil;
 137 }