1/**************************************************************************
2 *
3 * Copyright 2003 VMware, Inc.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28#include "i915_context.h"
29#include "i915_batch.h"
30#include "i915_debug.h"
31#include "i915_query.h"
32#include "i915_resource.h"
33#include "i915_screen.h"
34#include "i915_state.h"
35#include "i915_surface.h"
36
37#include "draw/draw_context.h"
38#include "pipe/p_defines.h"
39#include "pipe/p_screen.h"
40#include "util/u_draw.h"
41#include "util/u_inlines.h"
42#include "util/u_memory.h"
43#include "util/u_prim.h"
44#include "util/u_upload_mgr.h"
45
46/*
47 * Draw functions
48 */
49
50static void
51i915_draw_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info,
52              unsigned drawid_offset,
53              const struct pipe_draw_indirect_info *indirect,
54              const struct pipe_draw_start_count_bias *draws,
55              unsigned num_draws)
56{
57   if (num_draws > 1) {
58      util_draw_multi(pipe, info, drawid_offset, indirect, draws, num_draws);
59      return;
60   }
61
62   struct i915_context *i915 = i915_context(pipe);
63   struct draw_context *draw = i915->draw;
64   const void *mapped_indices = NULL;
65   unsigned i;
66
67   if (!u_trim_pipe_prim(info->mode, (unsigned *)&draws[0].count))
68      return;
69
70   /*
71    * Ack vs contants here, helps ipers a lot.
72    */
73   i915->dirty &= ~I915_NEW_VS_CONSTANTS;
74
75   if (i915->dirty)
76      i915_update_derived(i915);
77
78   /*
79    * Map vertex buffers
80    */
81   for (i = 0; i < i915->nr_vertex_buffers; i++) {
82      const void *buf = i915->vertex_buffers[i].is_user_buffer
83                           ? i915->vertex_buffers[i].buffer.user
84                           : NULL;
85      if (!buf) {
86         if (!i915->vertex_buffers[i].buffer.resource)
87            continue;
88         buf = i915_buffer(i915->vertex_buffers[i].buffer.resource)->data;
89      }
90      draw_set_mapped_vertex_buffer(draw, i, buf, ~0);
91   }
92
93   /*
94    * Map index buffer, if present
95    */
96   if (info->index_size) {
97      mapped_indices = info->has_user_indices ? info->index.user : NULL;
98      if (!mapped_indices)
99         mapped_indices = i915_buffer(info->index.resource)->data;
100      draw_set_indexes(draw, (ubyte *)mapped_indices, info->index_size, ~0);
101   }
102
103   if (i915->constants[PIPE_SHADER_VERTEX])
104      draw_set_mapped_constant_buffer(
105         draw, PIPE_SHADER_VERTEX, 0,
106         i915_buffer(i915->constants[PIPE_SHADER_VERTEX])->data,
107         (i915->current.num_user_constants[PIPE_SHADER_VERTEX] * 4 *
108          sizeof(float)));
109   else
110      draw_set_mapped_constant_buffer(draw, PIPE_SHADER_VERTEX, 0, NULL, 0);
111
112   /*
113    * Do the drawing
114    */
115   draw_vbo(i915->draw, info, drawid_offset, NULL, draws, num_draws, 0);
116
117   /*
118    * unmap vertex/index buffers
119    */
120   for (i = 0; i < i915->nr_vertex_buffers; i++) {
121      draw_set_mapped_vertex_buffer(i915->draw, i, NULL, 0);
122   }
123   if (mapped_indices)
124      draw_set_indexes(draw, NULL, 0, 0);
125
126   /*
127    * Instead of flushing on every state change, we flush once here
128    * when we fire the vbo.
129    */
130   draw_flush(i915->draw);
131}
132
133/*
134 * Generic context functions
135 */
136
137static void
138i915_destroy(struct pipe_context *pipe)
139{
140   struct i915_context *i915 = i915_context(pipe);
141   int i;
142
143   if (i915->blitter)
144      util_blitter_destroy(i915->blitter);
145
146   draw_destroy(i915->draw);
147
148   if (i915->base.stream_uploader)
149      u_upload_destroy(i915->base.stream_uploader);
150
151   if (i915->batch)
152      i915->iws->batchbuffer_destroy(i915->batch);
153
154   /* unbind framebuffer */
155   for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
156      pipe_surface_reference(&i915->framebuffer.cbufs[i], NULL);
157   }
158   pipe_surface_reference(&i915->framebuffer.zsbuf, NULL);
159
160   /* unbind constant buffers */
161   for (i = 0; i < PIPE_SHADER_TYPES; i++) {
162      pipe_resource_reference(&i915->constants[i], NULL);
163   }
164
165   FREE(i915);
166}
167
168static void
169i915_set_debug_callback(struct pipe_context *pipe,
170                        const struct util_debug_callback *cb)
171{
172   struct i915_context *i915 = i915_context(pipe);
173
174   if (cb)
175      i915->debug = *cb;
176   else
177      memset(&i915->debug, 0, sizeof(i915->debug));
178}
179
180struct pipe_context *
181i915_create_context(struct pipe_screen *screen, void *priv, unsigned flags)
182{
183   struct i915_context *i915;
184
185   i915 = CALLOC_STRUCT(i915_context);
186   if (!i915)
187      return NULL;
188
189   i915->iws = i915_screen(screen)->iws;
190   i915->base.screen = screen;
191   i915->base.priv = priv;
192   i915->base.stream_uploader = u_upload_create_default(&i915->base);
193   i915->base.const_uploader = i915->base.stream_uploader;
194   i915->base.set_debug_callback = i915_set_debug_callback;
195
196   i915->base.destroy = i915_destroy;
197
198   if (i915_screen(screen)->debug.use_blitter)
199      i915->base.clear = i915_clear_blitter;
200   else
201      i915->base.clear = i915_clear_render;
202
203   i915->base.draw_vbo = i915_draw_vbo;
204
205   /* init this before draw */
206   slab_create(&i915->transfer_pool, sizeof(struct pipe_transfer), 16);
207   slab_create(&i915->texture_transfer_pool, sizeof(struct i915_transfer), 16);
208
209   /* Batch stream debugging is a bit hacked up at the moment:
210    */
211   i915->batch = i915->iws->batchbuffer_create(i915->iws);
212
213   /*
214    * Create drawing context and plug our rendering stage into it.
215    */
216   i915->draw = draw_create(&i915->base);
217   assert(i915->draw);
218   if (i915_debug & DBG_VBUF) {
219      draw_set_rasterize_stage(i915->draw, i915_draw_vbuf_stage(i915));
220   } else {
221      draw_set_rasterize_stage(i915->draw, i915_draw_render_stage(i915));
222   }
223
224   i915_init_surface_functions(i915);
225   i915_init_state_functions(i915);
226   i915_init_flush_functions(i915);
227   i915_init_resource_functions(i915);
228   i915_init_query_functions(i915);
229
230   /* Create blitter. */
231   i915->blitter = util_blitter_create(&i915->base);
232   assert(i915->blitter);
233
234   /* must be done before installing Draw stages */
235   i915->no_log_program_errors = true;
236   util_blitter_cache_all_shaders(i915->blitter);
237   i915->no_log_program_errors = false;
238
239   draw_install_aaline_stage(i915->draw, &i915->base);
240   draw_install_aapoint_stage(i915->draw, &i915->base);
241   draw_enable_point_sprites(i915->draw, true);
242
243   i915->dirty = ~0;
244   i915->hardware_dirty = ~0;
245   i915->immediate_dirty = ~0;
246   i915->dynamic_dirty = ~0;
247   i915->static_dirty = ~0;
248   i915->flush_dirty = 0;
249
250   i915->current.fixup_swizzle = ~0;
251
252   return &i915->base;
253}
254