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_inlines.h"
30 #include "svga_context.h"
31 #include "svga_surface.h"
34 static void svga_set_scissor_state( struct pipe_context *pipe,
35 const struct pipe_scissor_state *scissor )
37 struct svga_context *svga = svga_context(pipe);
39 memcpy( &svga->curr.scissor, scissor, sizeof(*scissor) );
40 svga->dirty |= SVGA_NEW_SCISSOR;
44 static void svga_set_polygon_stipple( struct pipe_context *pipe,
45 const struct pipe_poly_stipple *stipple )
47 /* overridden by the draw module */
51 void svga_cleanup_framebuffer(struct svga_context *svga)
53 struct pipe_framebuffer_state *curr = &svga->curr.framebuffer;
54 struct pipe_framebuffer_state *hw = &svga->state.hw_clear.framebuffer;
57 for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
58 pipe_surface_reference(&curr->cbufs[i], NULL);
59 pipe_surface_reference(&hw->cbufs[i], NULL);
62 pipe_surface_reference(&curr->zsbuf, NULL);
63 pipe_surface_reference(&hw->zsbuf, NULL);
67 #define DEPTH_BIAS_SCALE_FACTOR_D16 ((float)(1<<15))
68 #define DEPTH_BIAS_SCALE_FACTOR_D24S8 ((float)(1<<23))
69 #define DEPTH_BIAS_SCALE_FACTOR_D32 ((float)(1<<31))
72 static void svga_set_framebuffer_state(struct pipe_context *pipe,
73 const struct pipe_framebuffer_state *fb)
75 struct svga_context *svga = svga_context(pipe);
76 struct pipe_framebuffer_state *dst = &svga->curr.framebuffer;
77 boolean propagate = FALSE;
80 dst->width = fb->width;
81 dst->height = fb->height;
82 dst->nr_cbufs = fb->nr_cbufs;
84 /* check if we need to propaget any of the target surfaces */
85 for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
86 if (dst->cbufs[i] && dst->cbufs[i] != fb->cbufs[i])
87 if (svga_surface_needs_propagation(dst->cbufs[i]))
92 /* make sure that drawing calls comes before propagation calls */
93 svga_hwtnl_flush_retry( svga );
95 for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
96 if (dst->cbufs[i] && dst->cbufs[i] != fb->cbufs[i])
97 svga_propagate_surface(pipe, dst->cbufs[i]);
100 /* XXX: Actually the virtual hardware may support rendertargets with
101 * different size, depending on the host API and driver, but since we cannot
102 * know that make no such assumption here. */
103 for(i = 0; i < fb->nr_cbufs; ++i) {
104 if (fb->zsbuf && fb->cbufs[i]) {
105 assert(fb->zsbuf->width == fb->cbufs[i]->width);
106 assert(fb->zsbuf->height == fb->cbufs[i]->height);
110 for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
111 pipe_surface_reference(&dst->cbufs[i], fb->cbufs[i]);
112 pipe_surface_reference(&dst->zsbuf, fb->zsbuf);
115 if (svga->curr.framebuffer.zsbuf)
117 switch (svga->curr.framebuffer.zsbuf->format) {
118 case PIPE_FORMAT_Z16_UNORM:
119 svga->curr.depthscale = 1.0f / DEPTH_BIAS_SCALE_FACTOR_D16;
121 case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
122 case PIPE_FORMAT_Z24X8_UNORM:
123 case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
124 case PIPE_FORMAT_X8Z24_UNORM:
125 svga->curr.depthscale = 1.0f / DEPTH_BIAS_SCALE_FACTOR_D24S8;
127 case PIPE_FORMAT_Z32_UNORM:
128 svga->curr.depthscale = 1.0f / DEPTH_BIAS_SCALE_FACTOR_D32;
130 case PIPE_FORMAT_Z32_FLOAT:
131 svga->curr.depthscale = 1.0f / ((float)(1<<23));
134 svga->curr.depthscale = 0.0f;
139 svga->curr.depthscale = 0.0f;
142 svga->dirty |= SVGA_NEW_FRAME_BUFFER;
147 static void svga_set_clip_state( struct pipe_context *pipe,
148 const struct pipe_clip_state *clip )
150 struct svga_context *svga = svga_context(pipe);
152 svga->curr.clip = *clip; /* struct copy */
154 svga->dirty |= SVGA_NEW_CLIP;
159 /* Called when driver state tracker notices changes to the viewport
162 static void svga_set_viewport_state( struct pipe_context *pipe,
163 const struct pipe_viewport_state *viewport )
165 struct svga_context *svga = svga_context(pipe);
167 svga->curr.viewport = *viewport; /* struct copy */
169 svga->dirty |= SVGA_NEW_VIEWPORT;
174 void svga_init_misc_functions( struct svga_context *svga )
176 svga->pipe.set_scissor_state = svga_set_scissor_state;
177 svga->pipe.set_polygon_stipple = svga_set_polygon_stipple;
178 svga->pipe.set_framebuffer_state = svga_set_framebuffer_state;
179 svga->pipe.set_clip_state = svga_set_clip_state;
180 svga->pipe.set_viewport_state = svga_set_viewport_state;