1 /**********************************************************
2 * Copyright 2008-2009 VMware, Inc. All rights reserved.
4 * Permission is hereby granted, free of charge, to any person
5 * obtaining a copy of this software and associated documentation
6 * files (the "Software"), to deal in the Software without
7 * restriction, including without limitation the rights to use, copy,
8 * modify, merge, publish, distribute, sublicense, and/or sell copies
9 * of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
24 **********************************************************/
28 #include "util/u_framebuffer.h"
29 #include "util/u_inlines.h"
30 #include "util/u_pstipple.h"
32 #include "svga_context.h"
33 #include "svga_screen.h"
34 #include "svga_surface.h"
35 #include "svga_resource_texture.h"
38 static void svga_set_scissor_states( struct pipe_context
*pipe
,
40 unsigned num_scissors
,
41 const struct pipe_scissor_state
*scissors
)
43 struct svga_context
*svga
= svga_context(pipe
);
45 memcpy( &svga
->curr
.scissor
, scissors
, sizeof(*scissors
) );
46 svga
->dirty
|= SVGA_NEW_SCISSOR
;
51 svga_set_polygon_stipple(struct pipe_context
*pipe
,
52 const struct pipe_poly_stipple
*stipple
)
54 struct svga_context
*svga
= svga_context(pipe
);
56 /* release old texture */
57 pipe_resource_reference(&svga
->polygon_stipple
.texture
, NULL
);
59 /* release old sampler view */
60 if (svga
->polygon_stipple
.sampler_view
) {
61 pipe
->sampler_view_destroy(pipe
,
62 &svga
->polygon_stipple
.sampler_view
->base
);
65 /* create new stipple texture */
66 svga
->polygon_stipple
.texture
=
67 util_pstipple_create_stipple_texture(pipe
, stipple
->stipple
);
69 /* create new sampler view */
70 svga
->polygon_stipple
.sampler_view
=
71 (struct svga_pipe_sampler_view
*)
72 util_pstipple_create_sampler_view(pipe
,
73 svga
->polygon_stipple
.texture
);
75 /* allocate sampler state, if first time */
76 if (!svga
->polygon_stipple
.sampler
) {
77 svga
->polygon_stipple
.sampler
= util_pstipple_create_sampler(pipe
);
80 svga
->dirty
|= SVGA_NEW_STIPPLE
;
84 void svga_cleanup_framebuffer(struct svga_context
*svga
)
86 struct svga_screen
*svgascreen
= svga_screen(svga
->pipe
.screen
);
87 struct pipe_framebuffer_state
*curr
= &svga
->curr
.framebuffer
;
88 struct pipe_framebuffer_state
*hw
= &svga
->state
.hw_clear
.framebuffer
;
91 for (i
= 0; i
< svgascreen
->max_color_buffers
; i
++) {
92 pipe_surface_reference(&curr
->cbufs
[i
], NULL
);
93 pipe_surface_reference(&hw
->cbufs
[i
], NULL
);
96 pipe_surface_reference(&curr
->zsbuf
, NULL
);
97 pipe_surface_reference(&hw
->zsbuf
, NULL
);
101 #define DEPTH_BIAS_SCALE_FACTOR_D16 ((float)(1<<15))
102 #define DEPTH_BIAS_SCALE_FACTOR_D24S8 ((float)(1<<23))
103 #define DEPTH_BIAS_SCALE_FACTOR_D32 ((float)(1<<31))
106 static void svga_set_framebuffer_state(struct pipe_context
*pipe
,
107 const struct pipe_framebuffer_state
*fb
)
109 struct svga_context
*svga
= svga_context(pipe
);
110 struct pipe_framebuffer_state
*dst
= &svga
->curr
.framebuffer
;
111 boolean propagate
= FALSE
;
114 /* make sure any pending drawing calls are flushed before changing
115 * the framebuffer state
117 svga_hwtnl_flush_retry(svga
);
119 dst
->width
= fb
->width
;
120 dst
->height
= fb
->height
;
121 dst
->nr_cbufs
= fb
->nr_cbufs
;
123 /* check if we need to propagate any of the target surfaces */
124 for (i
= 0; i
< dst
->nr_cbufs
; i
++) {
125 struct pipe_surface
*s
= i
< fb
->nr_cbufs
? fb
->cbufs
[i
] : NULL
;
126 if (dst
->cbufs
[i
] && dst
->cbufs
[i
] != s
) {
127 if (svga_surface_needs_propagation(dst
->cbufs
[i
])) {
135 for (i
= 0; i
< dst
->nr_cbufs
; i
++) {
136 struct pipe_surface
*s
= i
< fb
->nr_cbufs
? fb
->cbufs
[i
] : NULL
;
137 if (dst
->cbufs
[i
] && dst
->cbufs
[i
] != s
)
138 svga_propagate_surface(svga
, dst
->cbufs
[i
]);
142 /* Check that all surfaces are the same size.
143 * Actually, the virtual hardware may support rendertargets with
144 * different size, depending on the host API and driver,
147 int width
= 0, height
= 0;
149 width
= fb
->zsbuf
->width
;
150 height
= fb
->zsbuf
->height
;
152 for (i
= 0; i
< fb
->nr_cbufs
; ++i
) {
154 if (width
&& height
) {
155 if (fb
->cbufs
[i
]->width
!= width
||
156 fb
->cbufs
[i
]->height
!= height
) {
157 debug_warning("Mixed-size color and depth/stencil surfaces "
158 "may not work properly");
162 width
= fb
->cbufs
[i
]->width
;
163 height
= fb
->cbufs
[i
]->height
;
169 util_copy_framebuffer_state(dst
, fb
);
171 /* Set the rendered-to flags */
172 for (i
= 0; i
< dst
->nr_cbufs
; i
++) {
173 struct pipe_surface
*s
= dst
->cbufs
[i
];
175 struct svga_texture
*t
= svga_texture(s
->texture
);
176 svga_set_texture_rendered_to(t
, s
->u
.tex
.first_layer
, s
->u
.tex
.level
);
180 if (svga
->curr
.framebuffer
.zsbuf
)
182 switch (svga
->curr
.framebuffer
.zsbuf
->format
) {
183 case PIPE_FORMAT_Z16_UNORM
:
184 svga
->curr
.depthscale
= 1.0f
/ DEPTH_BIAS_SCALE_FACTOR_D16
;
186 case PIPE_FORMAT_Z24_UNORM_S8_UINT
:
187 case PIPE_FORMAT_Z24X8_UNORM
:
188 case PIPE_FORMAT_S8_UINT_Z24_UNORM
:
189 case PIPE_FORMAT_X8Z24_UNORM
:
190 svga
->curr
.depthscale
= 1.0f
/ DEPTH_BIAS_SCALE_FACTOR_D24S8
;
192 case PIPE_FORMAT_Z32_UNORM
:
193 svga
->curr
.depthscale
= 1.0f
/ DEPTH_BIAS_SCALE_FACTOR_D32
;
195 case PIPE_FORMAT_Z32_FLOAT
:
196 svga
->curr
.depthscale
= 1.0f
/ ((float)(1<<23));
199 svga
->curr
.depthscale
= 0.0f
;
203 /* Set rendered-to flag */
205 struct pipe_surface
*s
= dst
->zsbuf
;
206 struct svga_texture
*t
= svga_texture(s
->texture
);
207 svga_set_texture_rendered_to(t
, s
->u
.tex
.first_layer
, s
->u
.tex
.level
);
211 svga
->curr
.depthscale
= 0.0f
;
214 svga
->dirty
|= SVGA_NEW_FRAME_BUFFER
;
219 static void svga_set_clip_state( struct pipe_context
*pipe
,
220 const struct pipe_clip_state
*clip
)
222 struct svga_context
*svga
= svga_context(pipe
);
224 svga
->curr
.clip
= *clip
; /* struct copy */
226 svga
->dirty
|= SVGA_NEW_CLIP
;
231 /* Called when driver state tracker notices changes to the viewport
234 static void svga_set_viewport_states( struct pipe_context
*pipe
,
236 unsigned num_viewports
,
237 const struct pipe_viewport_state
*viewports
)
239 struct svga_context
*svga
= svga_context(pipe
);
241 svga
->curr
.viewport
= *viewports
; /* struct copy */
243 svga
->dirty
|= SVGA_NEW_VIEWPORT
;
248 void svga_init_misc_functions( struct svga_context
*svga
)
250 svga
->pipe
.set_scissor_states
= svga_set_scissor_states
;
251 svga
->pipe
.set_polygon_stipple
= svga_set_polygon_stipple
;
252 svga
->pipe
.set_framebuffer_state
= svga_set_framebuffer_state
;
253 svga
->pipe
.set_clip_state
= svga_set_clip_state
;
254 svga
->pipe
.set_viewport_states
= svga_set_viewport_states
;