src/gallium/drivers/swr/swr_clear.cpp

   1 /****************************************************************************
   2  * Copyright (C) 2015 Intel Corporation.   All Rights Reserved.
   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  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * 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 NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  ***************************************************************************/
  23
  24 #include "swr_context.h"
  25 #include "swr_query.h"
  26
  27 static void
  28 swr_clear(struct pipe_context *pipe,
  29           unsigned buffers,
  30           const union pipe_color_union *color,
  31           double depth,
  32           unsigned stencil)
  33 {
  34    struct swr_context *ctx = swr_context(pipe);
  35    struct pipe_framebuffer_state *fb = &ctx->framebuffer;
  36
  37    UINT clearMask = 0;
  38
  39    if (!swr_check_render_cond(pipe))
  40       return;
  41
  42    if (ctx->dirty)
  43       swr_update_derived(pipe);
  44
  45 /* Update clearMask/targetMask */
  46 #if 0 /* XXX SWR currently only clears SWR_ATTACHMENT_COLOR0, don't bother   \
  47          checking others yet. */
  48    if (buffers & PIPE_CLEAR_COLOR && fb->nr_cbufs) {
  49       UINT i;
  50       for (i = 0; i < fb->nr_cbufs; ++i)
  51          if (fb->cbufs[i])
  52             clearMask |= (SWR_CLEAR_COLOR0 << i);
  53    }
  54 #else
  55    if (buffers & PIPE_CLEAR_COLOR && fb->cbufs[0])
  56       clearMask |= SWR_CLEAR_COLOR;
  57 #endif
  58
  59    if (buffers & PIPE_CLEAR_DEPTH && fb->zsbuf)
  60       clearMask |= SWR_CLEAR_DEPTH;
  61
  62    if (buffers & PIPE_CLEAR_STENCIL && fb->zsbuf)
  63       clearMask |= SWR_CLEAR_STENCIL;
  64
  65 #if 0 // XXX HACK, override clear color alpha. On ubuntu, clears are
  66       // transparent.
  67    ((union pipe_color_union *)color)->f[3] = 1.0; /* cast off your const'd-ness */
  68 #endif
  69
  70    /* Reset viewport to full framebuffer width/height before clear, then
  71     * restore it  */
  72    /* Scissor affects clear, viewport should not */
  73    ctx->dirty |= SWR_NEW_VIEWPORT;
  74    SWR_VIEWPORT vp = {0};
  75    vp.width = ctx->framebuffer.width;
  76    vp.height = ctx->framebuffer.height;
  77    SwrSetViewports(ctx->swrContext, 1, &vp, NULL);
  78
  79    swr_update_draw_context(ctx);
  80    SwrClearRenderTarget(ctx->swrContext, clearMask, color->f, depth, stencil);
  81 }
  82
  83
  84 #if 0 // XXX, these don't get called. how to get these called?  Do we need
  85       // them?  Docs?
  86 static void
  87 swr_clear_render_target(struct pipe_context *pipe, struct pipe_surface *ps,
  88                         const union pipe_color_union *color,
  89                         unsigned x, unsigned y, unsigned w, unsigned h)
  90 {
  91    struct swr_context *ctx = swr_context(pipe);
  92    fprintf(stderr, "SWR swr_clear_render_target!\n");
  93
  94    ctx->dirty |= SWR_NEW_FRAMEBUFFER | SWR_NEW_SCISSOR;
  95 }
  96
  97 static void
  98 swr_clear_depth_stencil(struct pipe_context *pipe, struct pipe_surface *ps,
  99                         unsigned buffers, double depth, unsigned stencil,
 100                         unsigned x, unsigned y, unsigned w, unsigned h)
 101 {
 102    struct swr_context *ctx = swr_context(pipe);
 103    fprintf(stderr, "SWR swr_clear_depth_stencil!\n");
 104
 105    ctx->dirty |= SWR_NEW_FRAMEBUFFER | SWR_NEW_SCISSOR;
 106 }
 107
 108 static void
 109 swr_clear_buffer(struct pipe_context *pipe,
 110                  struct pipe_resource *res,
 111                  unsigned offset, unsigned size,
 112                  const void *data, int data_size)
 113 {
 114    fprintf(stderr, "SWR swr_clear_buffer!\n");
 115    struct swr_context *ctx = swr_context(pipe);
 116    struct swr_resource *buf = swr_resource(res);
 117    union pipe_color_union color;
 118    enum pipe_format dst_fmt;
 119    unsigned width, height, elements;
 120
 121    assert(res->target == PIPE_BUFFER);
 122    assert(buf);
 123    assert(size % data_size == 0);
 124
 125    SWR_SURFACE_STATE &swr_buffer = buf->swr;
 126
 127    ctx->dirty |= SWR_NEW_FRAMEBUFFER | SWR_NEW_SCISSOR;
 128 }
 129 #endif
 130
 131
 132 void
 133 swr_clear_init(struct pipe_context *pipe)
 134 {
 135    pipe->clear = swr_clear;
 136 #if 0 // XXX, these don't get called. how to get these called?  Do we need
 137       // them?  Docs?
 138    pipe->clear_render_target = swr_clear_render_target;
 139    pipe->clear_depth_stencil = swr_clear_depth_stencil;
 140    pipe->clear_buffer = swr_clear_buffer;
 141 #endif
 142 }