Merge remote-tracking branch 'mesa-public/master' into vulkan
[mesa.git] / src / mesa / state_tracker / st_context.h
1 /**************************************************************************
2 *
3 * Copyright 2003 VMware, Inc.
4 * All Rights Reserved.
5 *
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:
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.
21 * IN NO EVENT SHALL VMWARE 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.
25 *
26 **************************************************************************/
27
28 #ifndef ST_CONTEXT_H
29 #define ST_CONTEXT_H
30
31 #include "main/mtypes.h"
32 #include "pipe/p_state.h"
33 #include "state_tracker/st_api.h"
34 #include "main/fbobject.h"
35
36
37 #ifdef __cplusplus
38 extern "C" {
39 #endif
40
41
42 struct bitmap_cache;
43 struct dd_function_table;
44 struct draw_context;
45 struct draw_stage;
46 struct gen_mipmap_state;
47 struct st_context;
48 struct st_fragment_program;
49 struct u_upload_mgr;
50
51
52 #define ST_NEW_MESA (1 << 0) /* Mesa state has changed */
53 #define ST_NEW_FRAGMENT_PROGRAM (1 << 1)
54 #define ST_NEW_VERTEX_PROGRAM (1 << 2)
55 #define ST_NEW_FRAMEBUFFER (1 << 3)
56 #define ST_NEW_TESS_STATE (1 << 4)
57 #define ST_NEW_GEOMETRY_PROGRAM (1 << 5)
58 #define ST_NEW_VERTEX_ARRAYS (1 << 6)
59 #define ST_NEW_RASTERIZER (1 << 7)
60 #define ST_NEW_UNIFORM_BUFFER (1 << 8)
61 #define ST_NEW_TESSCTRL_PROGRAM (1 << 9)
62 #define ST_NEW_TESSEVAL_PROGRAM (1 << 10)
63 #define ST_NEW_SAMPLER_VIEWS (1 << 11)
64
65
66 struct st_state_flags {
67 GLuint mesa;
68 uint64_t st;
69 };
70
71 struct st_tracked_state {
72 const char *name;
73 struct st_state_flags dirty;
74 void (*update)( struct st_context *st );
75 };
76
77
78
79 struct st_context
80 {
81 struct st_context_iface iface;
82
83 struct gl_context *ctx;
84
85 struct pipe_context *pipe;
86
87 struct u_upload_mgr *uploader, *indexbuf_uploader, *constbuf_uploader;
88
89 struct draw_context *draw; /**< For selection/feedback/rastpos only */
90 struct draw_stage *feedback_stage; /**< For GL_FEEDBACK rendermode */
91 struct draw_stage *selection_stage; /**< For GL_SELECT rendermode */
92 struct draw_stage *rastpos_stage; /**< For glRasterPos */
93 GLboolean clamp_frag_color_in_shader;
94 GLboolean clamp_vert_color_in_shader;
95 boolean has_stencil_export; /**< can do shader stencil export? */
96 boolean has_time_elapsed;
97 boolean has_shader_model3;
98 boolean has_etc1;
99 boolean has_etc2;
100 boolean prefer_blit_based_texture_transfer;
101 boolean force_persample_in_shader;
102 boolean has_shareable_shaders;
103
104 /**
105 * If a shader can be created when we get its source.
106 * This means it has only 1 variant, not counting glBitmap and
107 * glDrawPixels.
108 */
109 boolean shader_has_one_variant[MESA_SHADER_STAGES];
110
111 boolean needs_texcoord_semantic;
112 boolean apply_texture_swizzle_to_border_color;
113
114 /* On old libGL's for linux we need to invalidate the drawables
115 * on glViewpport calls, this is set via a option.
116 */
117 boolean invalidate_on_gl_viewport;
118
119 boolean vertex_array_out_of_memory;
120
121 /* Some state is contained in constant objects.
122 * Other state is just parameter values.
123 */
124 struct {
125 struct pipe_blend_state blend;
126 struct pipe_depth_stencil_alpha_state depth_stencil;
127 struct pipe_rasterizer_state rasterizer;
128 struct pipe_sampler_state samplers[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
129 GLuint num_samplers[PIPE_SHADER_TYPES];
130 struct pipe_sampler_view *sampler_views[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
131 GLuint num_sampler_views[PIPE_SHADER_TYPES];
132 struct pipe_clip_state clip;
133 struct {
134 void *ptr;
135 unsigned size;
136 } constants[PIPE_SHADER_TYPES];
137 struct pipe_framebuffer_state framebuffer;
138 struct pipe_scissor_state scissor[PIPE_MAX_VIEWPORTS];
139 struct pipe_viewport_state viewport[PIPE_MAX_VIEWPORTS];
140 unsigned sample_mask;
141
142 GLuint poly_stipple[32]; /**< In OpenGL's bottom-to-top order */
143
144 GLuint fb_orientation;
145 } state;
146
147 char vendor[100];
148 char renderer[100];
149
150 struct st_state_flags dirty;
151
152 GLboolean vertdata_edgeflags;
153 GLboolean edgeflag_culls_prims;
154
155 /** Mapping from VARYING_SLOT_x to post-transformed vertex slot */
156 const GLuint *vertex_result_to_slot;
157
158 struct st_vertex_program *vp; /**< Currently bound vertex program */
159 struct st_fragment_program *fp; /**< Currently bound fragment program */
160 struct st_geometry_program *gp; /**< Currently bound geometry program */
161 struct st_tessctrl_program *tcp; /**< Currently bound tess control program */
162 struct st_tesseval_program *tep; /**< Currently bound tess eval program */
163
164 struct st_vp_variant *vp_variant;
165 struct st_fp_variant *fp_variant;
166 struct st_gp_variant *gp_variant;
167 struct st_tcp_variant *tcp_variant;
168 struct st_tep_variant *tep_variant;
169
170 struct gl_texture_object *default_texture;
171
172 struct {
173 struct pipe_resource *pixelmap_texture;
174 struct pipe_sampler_view *pixelmap_sampler_view;
175 } pixel_xfer;
176
177 /** for glBitmap */
178 struct {
179 struct pipe_rasterizer_state rasterizer;
180 struct pipe_sampler_state samplers[2];
181 enum pipe_format tex_format;
182 void *vs;
183 struct bitmap_cache *cache;
184 } bitmap;
185
186 /** for glDraw/CopyPixels */
187 struct {
188 void *zs_shaders[4];
189 void *vert_shaders[2]; /**< ureg shaders */
190 } drawpix;
191
192 /** for glClear */
193 struct {
194 struct pipe_rasterizer_state raster;
195 struct pipe_viewport_state viewport;
196 void *vs;
197 void *fs;
198 void *vs_layered;
199 void *gs_layered;
200 } clear;
201
202 /** used for anything using util_draw_vertex_buffer */
203 struct pipe_vertex_element velems_util_draw[3];
204
205 void *passthrough_fs; /**< simple pass-through frag shader */
206
207 enum pipe_texture_target internal_target;
208
209 struct cso_context *cso_context;
210
211 void *winsys_drawable_handle;
212
213 /* The number of vertex buffers from the last call of validate_arrays. */
214 unsigned last_num_vbuffers;
215
216 int32_t draw_stamp;
217 int32_t read_stamp;
218
219 struct st_config_options options;
220 };
221
222
223 /* Need this so that we can implement Mesa callbacks in this module.
224 */
225 static inline struct st_context *st_context(struct gl_context *ctx)
226 {
227 return ctx->st;
228 }
229
230
231 /**
232 * Wrapper for struct gl_framebuffer.
233 * This is an opaque type to the outside world.
234 */
235 struct st_framebuffer
236 {
237 struct gl_framebuffer Base;
238 void *Private;
239
240 struct st_framebuffer_iface *iface;
241 enum st_attachment_type statts[ST_ATTACHMENT_COUNT];
242 unsigned num_statts;
243 int32_t stamp;
244 int32_t iface_stamp;
245 };
246
247
248 extern void st_init_driver_functions(struct pipe_screen *screen,
249 struct dd_function_table *functions);
250
251 void st_invalidate_state(struct gl_context * ctx, GLuint new_state);
252
253
254
255 #define Y_0_TOP 1
256 #define Y_0_BOTTOM 2
257
258 static inline GLuint
259 st_fb_orientation(const struct gl_framebuffer *fb)
260 {
261 if (fb && _mesa_is_winsys_fbo(fb)) {
262 /* Drawing into a window (on-screen buffer).
263 *
264 * Negate Y scale to flip image vertically.
265 * The NDC Y coords prior to viewport transformation are in the range
266 * [y=-1=bottom, y=1=top]
267 * Hardware window coords are in the range [y=0=top, y=H-1=bottom] where
268 * H is the window height.
269 * Use the viewport transformation to invert Y.
270 */
271 return Y_0_TOP;
272 }
273 else {
274 /* Drawing into user-created FBO (very likely a texture).
275 *
276 * For textures, T=0=Bottom, so by extension Y=0=Bottom for rendering.
277 */
278 return Y_0_BOTTOM;
279 }
280 }
281
282
283 static inline unsigned
284 st_shader_stage_to_ptarget(gl_shader_stage stage)
285 {
286 switch (stage) {
287 case MESA_SHADER_VERTEX:
288 return PIPE_SHADER_VERTEX;
289 case MESA_SHADER_FRAGMENT:
290 return PIPE_SHADER_FRAGMENT;
291 case MESA_SHADER_GEOMETRY:
292 return PIPE_SHADER_GEOMETRY;
293 case MESA_SHADER_TESS_CTRL:
294 return PIPE_SHADER_TESS_CTRL;
295 case MESA_SHADER_TESS_EVAL:
296 return PIPE_SHADER_TESS_EVAL;
297 case MESA_SHADER_COMPUTE:
298 return PIPE_SHADER_COMPUTE;
299 }
300
301 assert(!"should not be reached");
302 return PIPE_SHADER_VERTEX;
303 }
304
305
306 /** clear-alloc a struct-sized object, with casting */
307 #define ST_CALLOC_STRUCT(T) (struct T *) calloc(1, sizeof(struct T))
308
309
310 extern struct st_context *
311 st_create_context(gl_api api, struct pipe_context *pipe,
312 const struct gl_config *visual,
313 struct st_context *share,
314 const struct st_config_options *options);
315
316 extern void
317 st_destroy_context(struct st_context *st);
318
319
320 #ifdef __cplusplus
321 }
322 #endif
323
324 #endif