src/gallium/drivers/swr/swr_clear.cpp

   1 /****************************************************************************
   2  * Copyright (C) 2015 Intel Corporation.   All Rights Reserved.
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   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
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  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
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  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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  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    swr_update_draw_context(ctx);
  71    SwrClearRenderTarget(ctx->swrContext, clearMask, color->f, depth, stencil,
  72                         ctx->swr_scissor);
  73 }
  74
  75
  76 #if 0 // XXX, these don't get called. how to get these called?  Do we need
  77       // them?  Docs?
  78 static void
  79 swr_clear_render_target(struct pipe_context *pipe, struct pipe_surface *ps,
  80                         const union pipe_color_union *color,
  81                         unsigned x, unsigned y, unsigned w, unsigned h,
  82                         bool render_condition_enabled)
  83 {
  84    struct swr_context *ctx = swr_context(pipe);
  85    fprintf(stderr, "SWR swr_clear_render_target!\n");
  86
  87    ctx->dirty |= SWR_NEW_FRAMEBUFFER | SWR_NEW_SCISSOR;
  88 }
  89
  90 static void
  91 swr_clear_depth_stencil(struct pipe_context *pipe, struct pipe_surface *ps,
  92                         unsigned buffers, double depth, unsigned stencil,
  93                         unsigned x, unsigned y, unsigned w, unsigned h,
  94                         bool render_condition_enabled)
  95 {
  96    struct swr_context *ctx = swr_context(pipe);
  97    fprintf(stderr, "SWR swr_clear_depth_stencil!\n");
  98
  99    ctx->dirty |= SWR_NEW_FRAMEBUFFER | SWR_NEW_SCISSOR;
 100 }
 101
 102 static void
 103 swr_clear_buffer(struct pipe_context *pipe,
 104                  struct pipe_resource *res,
 105                  unsigned offset, unsigned size,
 106                  const void *data, int data_size)
 107 {
 108    fprintf(stderr, "SWR swr_clear_buffer!\n");
 109    struct swr_context *ctx = swr_context(pipe);
 110    struct swr_resource *buf = swr_resource(res);
 111    union pipe_color_union color;
 112    enum pipe_format dst_fmt;
 113    unsigned width, height, elements;
 114
 115    assert(res->target == PIPE_BUFFER);
 116    assert(buf);
 117    assert(size % data_size == 0);
 118
 119    SWR_SURFACE_STATE &swr_buffer = buf->swr;
 120
 121    ctx->dirty |= SWR_NEW_FRAMEBUFFER | SWR_NEW_SCISSOR;
 122 }
 123 #endif
 124
 125
 126 void
 127 swr_clear_init(struct pipe_context *pipe)
 128 {
 129    pipe->clear = swr_clear;
 130 #if 0 // XXX, these don't get called. how to get these called?  Do we need
 131       // them?  Docs?
 132    pipe->clear_render_target = swr_clear_render_target;
 133    pipe->clear_depth_stencil = swr_clear_depth_stencil;
 134    pipe->clear_buffer = swr_clear_buffer;
 135 #endif
 136 }