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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