1 /*
2 * Copyright (c) 2008-2024 Broadcom. All Rights Reserved.
3 * The term “Broadcom” refers to Broadcom Inc.
4 * and/or its subsidiaries.
5 * SPDX-License-Identifier: MIT
6 */
7
8 #include "util/u_framebuffer.h"
9 #include "util/u_inlines.h"
10 #include "util/u_pstipple.h"
11
12 #include "svga_cmd.h"
13 #include "svga_context.h"
14 #include "svga_screen.h"
15 #include "svga_surface.h"
16 #include "svga_resource_texture.h"
17
18
19 static void
svga_set_scissor_states(struct pipe_context * pipe,unsigned start_slot,unsigned num_scissors,const struct pipe_scissor_state * scissors)20 svga_set_scissor_states(struct pipe_context *pipe,
21 unsigned start_slot,
22 unsigned num_scissors,
23 const struct pipe_scissor_state *scissors)
24 {
25 ASSERTED struct svga_screen *svgascreen = svga_screen(pipe->screen);
26 struct svga_context *svga = svga_context(pipe);
27 unsigned i, num_sc;
28
29 assert(start_slot + num_scissors <= svgascreen->max_viewports);
30
31 for (i = 0, num_sc = start_slot; i < num_scissors; i++) {
32 svga->curr.scissor[num_sc++] = scissors[i]; /* struct copy */
33 }
34
35 svga->dirty |= SVGA_NEW_SCISSOR;
36 }
37
38
39 static void
svga_set_polygon_stipple(struct pipe_context * pipe,const struct pipe_poly_stipple * stipple)40 svga_set_polygon_stipple(struct pipe_context *pipe,
41 const struct pipe_poly_stipple *stipple)
42 {
43 struct svga_context *svga = svga_context(pipe);
44
45 /* release old texture */
46 pipe_resource_reference(&svga->polygon_stipple.texture, NULL);
47
48 /* release old sampler view */
49 if (svga->polygon_stipple.sampler_view) {
50 pipe->sampler_view_destroy(pipe,
51 &svga->polygon_stipple.sampler_view->base);
52 }
53
54 /* create new stipple texture */
55 svga->polygon_stipple.texture =
56 util_pstipple_create_stipple_texture(pipe, stipple->stipple);
57
58 /* create new sampler view */
59 svga->polygon_stipple.sampler_view =
60 (struct svga_pipe_sampler_view *)
61 util_pstipple_create_sampler_view(pipe,
62 svga->polygon_stipple.texture);
63
64 /* allocate sampler state, if first time */
65 if (!svga->polygon_stipple.sampler) {
66 svga->polygon_stipple.sampler = util_pstipple_create_sampler(pipe);
67 }
68
69 svga->dirty |= SVGA_NEW_STIPPLE;
70 }
71
72
73 void
svga_cleanup_framebuffer(struct svga_context * svga)74 svga_cleanup_framebuffer(struct svga_context *svga)
75 {
76 struct pipe_framebuffer_state *curr = &svga->curr.framebuffer;
77 struct pipe_framebuffer_state *hw = &svga->state.hw_clear.framebuffer;
78
79 util_unreference_framebuffer_state(curr);
80 util_unreference_framebuffer_state(hw);
81 }
82
83
84 #define DEPTH_BIAS_SCALE_FACTOR_D16 ((float)(1<<15))
85 #define DEPTH_BIAS_SCALE_FACTOR_D24S8 ((float)(1<<23))
86 #define DEPTH_BIAS_SCALE_FACTOR_D32 ((float)(1<<31))
87
88
89 static void
svga_set_framebuffer_state(struct pipe_context * pipe,const struct pipe_framebuffer_state * fb)90 svga_set_framebuffer_state(struct pipe_context *pipe,
91 const struct pipe_framebuffer_state *fb)
92 {
93 struct svga_context *svga = svga_context(pipe);
94 struct pipe_framebuffer_state *dst = &svga->curr.framebuffer;
95 unsigned i;
96
97 /* make sure any pending drawing calls are flushed before changing
98 * the framebuffer state
99 */
100 svga_hwtnl_flush_retry(svga);
101
102 dst->width = fb->width;
103 dst->height = fb->height;
104 dst->nr_cbufs = fb->nr_cbufs;
105
106 /* Check that all surfaces are the same size.
107 * Actually, the virtual hardware may support rendertargets with
108 * different size, depending on the host API and driver,
109 */
110 {
111 int width = 0, height = 0;
112 if (fb->zsbuf) {
113 width = fb->zsbuf->width;
114 height = fb->zsbuf->height;
115 }
116 for (i = 0; i < fb->nr_cbufs; ++i) {
117 if (fb->cbufs[i]) {
118 if (width && height) {
119 if (fb->cbufs[i]->width != width ||
120 fb->cbufs[i]->height != height) {
121 debug_warning("Mixed-size color and depth/stencil surfaces "
122 "may not work properly");
123 }
124 }
125 else {
126 width = fb->cbufs[i]->width;
127 height = fb->cbufs[i]->height;
128 }
129 }
130 }
131 }
132
133 util_copy_framebuffer_state(dst, fb);
134
135 if (svga->curr.framebuffer.zsbuf) {
136 switch (svga->curr.framebuffer.zsbuf->format) {
137 case PIPE_FORMAT_Z16_UNORM:
138 svga->curr.depthscale = 1.0f / DEPTH_BIAS_SCALE_FACTOR_D16;
139 break;
140 case PIPE_FORMAT_Z24_UNORM_S8_UINT:
141 case PIPE_FORMAT_Z24X8_UNORM:
142 case PIPE_FORMAT_S8_UINT_Z24_UNORM:
143 case PIPE_FORMAT_X8Z24_UNORM:
144 svga->curr.depthscale = 1.0f / DEPTH_BIAS_SCALE_FACTOR_D24S8;
145 break;
146 case PIPE_FORMAT_Z32_UNORM:
147 svga->curr.depthscale = 1.0f / DEPTH_BIAS_SCALE_FACTOR_D32;
148 break;
149 case PIPE_FORMAT_Z32_FLOAT:
150 svga->curr.depthscale = 1.0f / ((float)(1<<23));
151 break;
152 default:
153 svga->curr.depthscale = 0.0f;
154 break;
155 }
156 }
157 else {
158 svga->curr.depthscale = 0.0f;
159 }
160
161 svga->dirty |= SVGA_NEW_FRAME_BUFFER;
162 }
163
164
165 static void
svga_set_clip_state(struct pipe_context * pipe,const struct pipe_clip_state * clip)166 svga_set_clip_state(struct pipe_context *pipe,
167 const struct pipe_clip_state *clip)
168 {
169 struct svga_context *svga = svga_context(pipe);
170
171 svga->curr.clip = *clip; /* struct copy */
172
173 svga->dirty |= SVGA_NEW_CLIP;
174 }
175
176
177 static void
svga_set_viewport_states(struct pipe_context * pipe,unsigned start_slot,unsigned num_viewports,const struct pipe_viewport_state * viewports)178 svga_set_viewport_states(struct pipe_context *pipe,
179 unsigned start_slot,
180 unsigned num_viewports,
181 const struct pipe_viewport_state *viewports)
182 {
183 struct svga_context *svga = svga_context(pipe);
184 ASSERTED struct svga_screen *svgascreen = svga_screen(pipe->screen);
185 unsigned i, num_vp;
186
187 assert(start_slot + num_viewports <= svgascreen->max_viewports);
188
189 for (i = 0, num_vp = start_slot; i < num_viewports; i++) {
190 svga->curr.viewport[num_vp++] = viewports[i]; /* struct copy */
191 }
192
193 svga->dirty |= SVGA_NEW_VIEWPORT;
194 }
195
196
197 /**
198 * Called by state tracker to specify a callback function the driver
199 * can use to report info back to the gallium frontend.
200 */
201 static void
svga_set_debug_callback(struct pipe_context * pipe,const struct util_debug_callback * cb)202 svga_set_debug_callback(struct pipe_context *pipe,
203 const struct util_debug_callback *cb)
204 {
205 struct svga_context *svga = svga_context(pipe);
206
207 if (cb) {
208 svga->debug.callback = *cb;
209 svga->swc->debug_callback = &svga->debug.callback;
210 } else {
211 memset(&svga->debug.callback, 0, sizeof(svga->debug.callback));
212 svga->swc->debug_callback = NULL;
213 }
214 }
215
216
217 void
svga_init_misc_functions(struct svga_context * svga)218 svga_init_misc_functions(struct svga_context *svga)
219 {
220 svga->pipe.set_scissor_states = svga_set_scissor_states;
221 svga->pipe.set_polygon_stipple = svga_set_polygon_stipple;
222 svga->pipe.set_framebuffer_state = svga_set_framebuffer_state;
223 svga->pipe.set_clip_state = svga_set_clip_state;
224 svga->pipe.set_viewport_states = svga_set_viewport_states;
225 svga->pipe.set_debug_callback = svga_set_debug_callback;
226 }
227