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
27static void
28swr_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   unsigned layers = 0;
39
40   if (!swr_check_render_cond(pipe))
41      return;
42
43   swr_update_derived(pipe);
44
45   if (buffers & PIPE_CLEAR_COLOR && fb->nr_cbufs) {
46      for (unsigned i = 0; i < fb->nr_cbufs; ++i)
47         if (fb->cbufs[i] && (buffers & (PIPE_CLEAR_COLOR0 << i))) {
48            clearMask |= (SWR_ATTACHMENT_COLOR0_BIT << i);
49            layers = std::max(layers, fb->cbufs[i]->u.tex.last_layer -
50                                      fb->cbufs[i]->u.tex.first_layer + 1u);
51         }
52   }
53
54   if (buffers & PIPE_CLEAR_DEPTH && fb->zsbuf) {
55      clearMask |= SWR_ATTACHMENT_DEPTH_BIT;
56      layers = std::max(layers, fb->zsbuf->u.tex.last_layer -
57                                fb->zsbuf->u.tex.first_layer + 1u);
58   }
59
60   if (buffers & PIPE_CLEAR_STENCIL && fb->zsbuf) {
61      clearMask |= SWR_ATTACHMENT_STENCIL_BIT;
62      layers = std::max(layers, fb->zsbuf->u.tex.last_layer -
63                                fb->zsbuf->u.tex.first_layer + 1u);
64   }
65
66#if 0 // XXX HACK, override clear color alpha. On ubuntu, clears are
67      // transparent.
68   ((union pipe_color_union *)color)->f[3] = 1.0; /* cast off your const'd-ness */
69#endif
70
71   SWR_RECT clear_rect;
72   /* If enabled, clear to scissor; otherwise clear full surface */
73   if (ctx->rasterizer && ctx->rasterizer->scissor) {
74      clear_rect = ctx->swr_scissor;
75   } else {
76      clear_rect = {0, 0, (int32_t)fb->width, (int32_t)fb->height};
77   }
78
79   for (unsigned i = 0; i < layers; ++i) {
80      swr_update_draw_context(ctx);
81      ctx->api.pfnSwrClearRenderTarget(ctx->swrContext, clearMask, i,
82                                       color->f, depth, stencil,
83                                       clear_rect);
84
85      // Mask out the attachments that are out of layers.
86      if (fb->zsbuf &&
87          (fb->zsbuf->u.tex.last_layer <= fb->zsbuf->u.tex.first_layer + i))
88         clearMask &= ~(SWR_ATTACHMENT_DEPTH_BIT | SWR_ATTACHMENT_STENCIL_BIT);
89      for (unsigned c = 0; c < fb->nr_cbufs; ++c) {
90         const struct pipe_surface *sf = fb->cbufs[c];
91         if (sf && (sf->u.tex.last_layer <= sf->u.tex.first_layer + i))
92            clearMask &= ~(SWR_ATTACHMENT_COLOR0_BIT << c);
93      }
94   }
95}
96
97
98#if 0 // XXX, these don't get called. how to get these called?  Do we need
99      // them?  Docs?
100static void
101swr_clear_render_target(struct pipe_context *pipe, struct pipe_surface *ps,
102                        const union pipe_color_union *color,
103                        unsigned x, unsigned y, unsigned w, unsigned h,
104                        bool render_condition_enabled)
105{
106   struct swr_context *ctx = swr_context(pipe);
107   fprintf(stderr, "SWR swr_clear_render_target!\n");
108
109   ctx->dirty |= SWR_NEW_FRAMEBUFFER | SWR_NEW_SCISSOR;
110}
111
112static void
113swr_clear_depth_stencil(struct pipe_context *pipe, struct pipe_surface *ps,
114                        unsigned buffers, double depth, unsigned stencil,
115                        unsigned x, unsigned y, unsigned w, unsigned h,
116                        bool render_condition_enabled)
117{
118   struct swr_context *ctx = swr_context(pipe);
119   fprintf(stderr, "SWR swr_clear_depth_stencil!\n");
120
121   ctx->dirty |= SWR_NEW_FRAMEBUFFER | SWR_NEW_SCISSOR;
122}
123
124static void
125swr_clear_buffer(struct pipe_context *pipe,
126                 struct pipe_resource *res,
127                 unsigned offset, unsigned size,
128                 const void *data, int data_size)
129{
130   fprintf(stderr, "SWR swr_clear_buffer!\n");
131   struct swr_context *ctx = swr_context(pipe);
132   struct swr_resource *buf = swr_resource(res);
133   union pipe_color_union color;
134   enum pipe_format dst_fmt;
135   unsigned width, height, elements;
136
137   assert(res->target == PIPE_BUFFER);
138   assert(buf);
139   assert(size % data_size == 0);
140
141   SWR_SURFACE_STATE &swr_buffer = buf->swr;
142
143   ctx->dirty |= SWR_NEW_FRAMEBUFFER | SWR_NEW_SCISSOR;
144}
145#endif
146
147
148void
149swr_clear_init(struct pipe_context *pipe)
150{
151   pipe->clear = swr_clear;
152#if 0 // XXX, these don't get called. how to get these called?  Do we need
153      // them?  Docs?
154   pipe->clear_render_target = swr_clear_render_target;
155   pipe->clear_depth_stencil = swr_clear_depth_stencil;
156   pipe->clear_buffer = swr_clear_buffer;
157#endif
158}
159