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_state.h"
30 #include "i915_screen.h"
31 #include "i915_surface.h"
32 #include "i915_query.h"
33 #include "i915_batch.h"
34 #include "i915_resource.h"
35
36 #include "draw/draw_context.h"
37 #include "pipe/p_defines.h"
38 #include "util/u_inlines.h"
39 #include "util/u_memory.h"
40 #include "pipe/p_screen.h"
41
42
43 DEBUG_GET_ONCE_BOOL_OPTION(i915_no_vbuf, "I915_NO_VBUF", FALSE)
44
45
46 /*
47 * Draw functions
48 */
49
50
51 static void
i915_draw_vbo(struct pipe_context * pipe,const struct pipe_draw_info * info)52 i915_draw_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)
53 {
54 struct i915_context *i915 = i915_context(pipe);
55 struct draw_context *draw = i915->draw;
56 const void *mapped_indices = NULL;
57 unsigned i;
58
59 /*
60 * Ack vs contants here, helps ipers a lot.
61 */
62 i915->dirty &= ~I915_NEW_VS_CONSTANTS;
63
64 if (i915->dirty)
65 i915_update_derived(i915);
66
67 /*
68 * Map vertex buffers
69 */
70 for (i = 0; i < i915->nr_vertex_buffers; i++) {
71 const void *buf = i915->vertex_buffers[i].user_buffer;
72 if (!buf)
73 buf = i915_buffer(i915->vertex_buffers[i].buffer)->data;
74 draw_set_mapped_vertex_buffer(draw, i, buf, ~0);
75 }
76
77 /*
78 * Map index buffer, if present
79 */
80 if (info->indexed) {
81 mapped_indices = i915->index_buffer.user_buffer;
82 if (!mapped_indices)
83 mapped_indices = i915_buffer(i915->index_buffer.buffer)->data;
84 draw_set_indexes(draw,
85 (ubyte *) mapped_indices + i915->index_buffer.offset,
86 i915->index_buffer.index_size, ~0);
87 }
88
89 if (i915->constants[PIPE_SHADER_VERTEX])
90 draw_set_mapped_constant_buffer(draw, PIPE_SHADER_VERTEX, 0,
91 i915_buffer(i915->constants[PIPE_SHADER_VERTEX])->data,
92 (i915->current.num_user_constants[PIPE_SHADER_VERTEX] *
93 4 * sizeof(float)));
94 else
95 draw_set_mapped_constant_buffer(draw, PIPE_SHADER_VERTEX, 0, NULL, 0);
96
97 if (i915->num_vertex_sampler_views > 0)
98 i915_prepare_vertex_sampling(i915);
99
100 /*
101 * Do the drawing
102 */
103 draw_vbo(i915->draw, info);
104
105 /*
106 * unmap vertex/index buffers
107 */
108 for (i = 0; i < i915->nr_vertex_buffers; i++) {
109 draw_set_mapped_vertex_buffer(i915->draw, i, NULL, 0);
110 }
111 if (mapped_indices)
112 draw_set_indexes(draw, NULL, 0, 0);
113
114 if (i915->num_vertex_sampler_views > 0)
115 i915_cleanup_vertex_sampling(i915);
116
117 /*
118 * Instead of flushing on every state change, we flush once here
119 * when we fire the vbo.
120 */
121 draw_flush(i915->draw);
122 }
123
124
125 /*
126 * Generic context functions
127 */
128
129
i915_destroy(struct pipe_context * pipe)130 static void i915_destroy(struct pipe_context *pipe)
131 {
132 struct i915_context *i915 = i915_context(pipe);
133 int i;
134
135 if (i915->blitter)
136 util_blitter_destroy(i915->blitter);
137
138 draw_destroy(i915->draw);
139
140 if(i915->batch)
141 i915->iws->batchbuffer_destroy(i915->batch);
142
143 /* unbind framebuffer */
144 for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
145 pipe_surface_reference(&i915->framebuffer.cbufs[i], NULL);
146 }
147 pipe_surface_reference(&i915->framebuffer.zsbuf, NULL);
148
149 /* unbind constant buffers */
150 for (i = 0; i < PIPE_SHADER_TYPES; i++) {
151 pipe_resource_reference(&i915->constants[i], NULL);
152 }
153
154 FREE(i915);
155 }
156
157 struct pipe_context *
i915_create_context(struct pipe_screen * screen,void * priv,unsigned flags)158 i915_create_context(struct pipe_screen *screen, void *priv, unsigned flags)
159 {
160 struct i915_context *i915;
161
162 i915 = CALLOC_STRUCT(i915_context);
163 if (!i915)
164 return NULL;
165
166 i915->iws = i915_screen(screen)->iws;
167 i915->base.screen = screen;
168 i915->base.priv = priv;
169
170 i915->base.destroy = i915_destroy;
171
172 if (i915_screen(screen)->debug.use_blitter)
173 i915->base.clear = i915_clear_blitter;
174 else
175 i915->base.clear = i915_clear_render;
176
177 i915->base.draw_vbo = i915_draw_vbo;
178
179 /* init this before draw */
180 slab_create(&i915->transfer_pool, sizeof(struct pipe_transfer),
181 16);
182 slab_create(&i915->texture_transfer_pool, sizeof(struct i915_transfer),
183 16);
184
185 /* Batch stream debugging is a bit hacked up at the moment:
186 */
187 i915->batch = i915->iws->batchbuffer_create(i915->iws);
188
189 /*
190 * Create drawing context and plug our rendering stage into it.
191 */
192 i915->draw = draw_create(&i915->base);
193 assert(i915->draw);
194 if (!debug_get_option_i915_no_vbuf()) {
195 draw_set_rasterize_stage(i915->draw, i915_draw_vbuf_stage(i915));
196 } else {
197 draw_set_rasterize_stage(i915->draw, i915_draw_render_stage(i915));
198 }
199
200 i915_init_surface_functions(i915);
201 i915_init_state_functions(i915);
202 i915_init_flush_functions(i915);
203 i915_init_resource_functions(i915);
204 i915_init_query_functions(i915);
205
206 /* Create blitter. */
207 i915->blitter = util_blitter_create(&i915->base);
208 assert(i915->blitter);
209
210 /* must be done before installing Draw stages */
211 util_blitter_cache_all_shaders(i915->blitter);
212
213 draw_install_aaline_stage(i915->draw, &i915->base);
214 draw_install_aapoint_stage(i915->draw, &i915->base);
215 draw_enable_point_sprites(i915->draw, TRUE);
216
217 i915->dirty = ~0;
218 i915->hardware_dirty = ~0;
219 i915->immediate_dirty = ~0;
220 i915->dynamic_dirty = ~0;
221 i915->static_dirty = ~0;
222 i915->flush_dirty = 0;
223
224 return &i915->base;
225 }
226