gallium: Add support for multiple viewports
[mesa.git] / src / gallium / drivers / llvmpipe / lp_state_clip.c
1 /**************************************************************************
2 *
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
4 * All Rights Reserved.
5 *
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8 * "Software"), to deal in the Software without restriction, including
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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.
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24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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26 **************************************************************************/
27
28 /* Authors: Keith Whitwell <keith@tungstengraphics.com>
29 */
30 #include "lp_context.h"
31 #include "lp_state.h"
32 #include "draw/draw_context.h"
33
34
35 static void
36 llvmpipe_set_clip_state(struct pipe_context *pipe,
37 const struct pipe_clip_state *clip)
38 {
39 struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
40
41 /* pass the clip state to the draw module */
42 draw_set_clip_state(llvmpipe->draw, clip);
43 }
44
45
46 static void
47 llvmpipe_set_viewport_states(struct pipe_context *pipe,
48 unsigned start_slot,
49 unsigned num_viewports,
50 const struct pipe_viewport_state *viewports)
51 {
52 struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
53
54 /* pass the viewport info to the draw module */
55 draw_set_viewport_states(llvmpipe->draw, start_slot, num_viewports,
56 viewports);
57
58 llvmpipe->viewport = *viewports; /* struct copy */
59 llvmpipe->dirty |= LP_NEW_VIEWPORT;
60 }
61
62
63 static void
64 llvmpipe_set_scissor_states(struct pipe_context *pipe,
65 unsigned start_slot,
66 unsigned num_scissors,
67 const struct pipe_scissor_state *scissors)
68 {
69 struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
70
71 draw_flush(llvmpipe->draw);
72
73 llvmpipe->scissor = *scissors; /* struct copy */
74 llvmpipe->dirty |= LP_NEW_SCISSOR;
75 }
76
77
78 static void
79 llvmpipe_set_polygon_stipple(struct pipe_context *pipe,
80 const struct pipe_poly_stipple *stipple)
81 {
82 struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
83
84 draw_flush(llvmpipe->draw);
85
86 llvmpipe->poly_stipple = *stipple; /* struct copy */
87 llvmpipe->dirty |= LP_NEW_STIPPLE;
88 }
89
90
91
92 void
93 llvmpipe_init_clip_funcs(struct llvmpipe_context *llvmpipe)
94 {
95 llvmpipe->pipe.set_clip_state = llvmpipe_set_clip_state;
96 llvmpipe->pipe.set_polygon_stipple = llvmpipe_set_polygon_stipple;
97 llvmpipe->pipe.set_scissor_states = llvmpipe_set_scissor_states;
98 llvmpipe->pipe.set_viewport_states = llvmpipe_set_viewport_states;
99 }