1 /**************************************************************************
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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 TUNGSTEN GRAPHICS 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.
26 **************************************************************************/
28 #include "i915_context.h"
29 #include "i915_state.h"
30 #include "i915_screen.h"
31 #include "i915_batch.h"
32 #include "i915_texture.h"
35 #include "draw/draw_context.h"
36 #include "pipe/p_defines.h"
37 #include "pipe/internal/p_winsys_screen.h"
38 #include "pipe/p_inlines.h"
39 #include "util/u_memory.h"
40 #include "pipe/p_screen.h"
49 i915_draw_range_elements(struct pipe_context
*pipe
,
50 struct pipe_buffer
*indexBuffer
,
54 unsigned prim
, unsigned start
, unsigned count
)
56 struct i915_context
*i915
= i915_context(pipe
);
57 struct draw_context
*draw
= i915
->draw
;
61 i915_update_derived(i915
);
66 for (i
= 0; i
< i915
->num_vertex_buffers
; i
++) {
67 void *buf
= pipe_buffer_map(pipe
->screen
, i915
->vertex_buffer
[i
].buffer
,
68 PIPE_BUFFER_USAGE_CPU_READ
);
69 draw_set_mapped_vertex_buffer(draw
, i
, buf
);
73 * Map index buffer, if present
76 void *mapped_indexes
= pipe_buffer_map(pipe
->screen
, indexBuffer
,
77 PIPE_BUFFER_USAGE_CPU_READ
);
78 draw_set_mapped_element_buffer_range(draw
, indexSize
,
83 draw_set_mapped_element_buffer(draw
, 0, NULL
);
87 draw_set_mapped_constant_buffer(draw
, PIPE_SHADER_VERTEX
,
88 i915
->current
.constants
[PIPE_SHADER_VERTEX
],
89 (i915
->current
.num_user_constants
[PIPE_SHADER_VERTEX
] *
95 draw_arrays(i915
->draw
, prim
, start
, count
);
98 * unmap vertex/index buffers
100 for (i
= 0; i
< i915
->num_vertex_buffers
; i
++) {
101 pipe_buffer_unmap(pipe
->screen
, i915
->vertex_buffer
[i
].buffer
);
102 draw_set_mapped_vertex_buffer(draw
, i
, NULL
);
106 pipe_buffer_unmap(pipe
->screen
, indexBuffer
);
107 draw_set_mapped_element_buffer_range(draw
, 0, start
, start
+ count
- 1, NULL
);
112 i915_draw_elements(struct pipe_context
*pipe
,
113 struct pipe_buffer
*indexBuffer
,
115 unsigned prim
, unsigned start
, unsigned count
)
117 i915_draw_range_elements(pipe
, indexBuffer
,
124 i915_draw_arrays(struct pipe_context
*pipe
,
125 unsigned prim
, unsigned start
, unsigned count
)
127 i915_draw_elements(pipe
, NULL
, 0, prim
, start
, count
);
132 * Is referenced functions
137 i915_is_texture_referenced(struct pipe_context
*pipe
,
138 struct pipe_texture
*texture
,
139 unsigned face
, unsigned level
)
142 * FIXME: Return the corrent result. We can't alays return referenced
143 * since it causes a double flush within the vbo module.
146 return PIPE_REFERENCED_FOR_READ
| PIPE_REFERENCED_FOR_WRITE
;
153 i915_is_buffer_referenced(struct pipe_context
*pipe
,
154 struct pipe_buffer
*buf
)
157 * Since we never expose hardware buffers to the state tracker
158 * they can never be referenced, so this isn't a lie
165 * Generic context functions
169 static void i915_destroy(struct pipe_context
*pipe
)
171 struct i915_context
*i915
= i915_context(pipe
);
174 draw_destroy(i915
->draw
);
177 i915
->iws
->batchbuffer_destroy(i915
->batch
);
179 /* unbind framebuffer */
180 for (i
= 0; i
< PIPE_MAX_COLOR_BUFS
; i
++) {
181 pipe_surface_reference(&i915
->framebuffer
.cbufs
[i
], NULL
);
183 pipe_surface_reference(&i915
->framebuffer
.zsbuf
, NULL
);
188 struct pipe_context
*
189 i915_create_context(struct pipe_screen
*screen
)
191 struct i915_context
*i915
;
193 i915
= CALLOC_STRUCT(i915_context
);
197 i915
->iws
= i915_screen(screen
)->iws
;
198 i915
->base
.winsys
= NULL
;
199 i915
->base
.screen
= screen
;
201 i915
->base
.destroy
= i915_destroy
;
203 i915
->base
.clear
= i915_clear
;
205 i915
->base
.draw_arrays
= i915_draw_arrays
;
206 i915
->base
.draw_elements
= i915_draw_elements
;
207 i915
->base
.draw_range_elements
= i915_draw_range_elements
;
209 i915
->base
.is_texture_referenced
= i915_is_texture_referenced
;
210 i915
->base
.is_buffer_referenced
= i915_is_buffer_referenced
;
213 * Create drawing context and plug our rendering stage into it.
215 i915
->draw
= draw_create();
217 if (!debug_get_bool_option("I915_NO_VBUF", FALSE
)) {
218 draw_set_rasterize_stage(i915
->draw
, i915_draw_vbuf_stage(i915
));
220 draw_set_rasterize_stage(i915
->draw
, i915_draw_render_stage(i915
));
223 i915_init_surface_functions(i915
);
224 i915_init_state_functions(i915
);
225 i915_init_flush_functions(i915
);
227 draw_install_aaline_stage(i915
->draw
, &i915
->base
);
228 draw_install_aapoint_stage(i915
->draw
, &i915
->base
);
231 i915
->hardware_dirty
= ~0;
233 /* Batch stream debugging is a bit hacked up at the moment:
235 i915
->batch
= i915
->iws
->batchbuffer_create(i915
->iws
);