1 /**************************************************************************
3 * Copyright 2003 VMware, Inc.
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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.
26 **************************************************************************/
31 #include "main/mtypes.h"
32 #include "state_tracker/st_api.h"
33 #include "main/fbobject.h"
34 #include "state_tracker/st_atom.h"
35 #include "util/u_helpers.h"
36 #include "util/u_inlines.h"
37 #include "util/list.h"
46 struct dd_function_table
;
49 struct gen_mipmap_state
;
51 struct st_fragment_program
;
52 struct st_perf_monitor_group
;
56 /** For drawing quads for glClear, glDraw/CopyPixels, glBitmap, etc. */
64 struct st_bitmap_cache
66 /** Window pos to render the cached image */
68 /** Bounds of region used in window coords */
69 GLint xmin
, ymin
, xmax
, ymax
;
73 /** Bitmap's Z position */
76 struct pipe_resource
*texture
;
77 struct pipe_transfer
*trans
;
81 /** An I8 texture image: */
85 struct st_bound_handles
92 #define NUM_DRAWPIX_CACHE_ENTRIES 4
94 struct drawpix_cache_entry
96 GLsizei width
, height
;
98 const void *user_pointer
; /**< Last user 'pixels' pointer */
99 void *image
; /**< Copy of the glDrawPixels image data */
100 struct pipe_resource
*texture
;
107 struct st_context_iface iface
;
109 struct gl_context
*ctx
;
111 struct pipe_context
*pipe
;
113 struct draw_context
*draw
; /**< For selection/feedback/rastpos only */
114 struct draw_stage
*feedback_stage
; /**< For GL_FEEDBACK rendermode */
115 struct draw_stage
*selection_stage
; /**< For GL_SELECT rendermode */
116 struct draw_stage
*rastpos_stage
; /**< For glRasterPos */
117 GLboolean clamp_frag_color_in_shader
;
118 GLboolean clamp_vert_color_in_shader
;
119 boolean has_stencil_export
; /**< can do shader stencil export? */
120 boolean has_time_elapsed
;
121 boolean has_shader_model3
;
124 boolean has_astc_2d_ldr
;
125 boolean prefer_blit_based_texture_transfer
;
126 boolean force_persample_in_shader
;
127 boolean has_shareable_shaders
;
128 boolean has_half_float_packing
;
129 boolean has_multi_draw_indirect
;
130 boolean has_single_pipe_stat
;
131 boolean has_indep_blend_func
;
132 boolean needs_rgb_dst_alpha_override
;
133 boolean can_bind_const_buffer_as_vertex
;
136 * If a shader can be created when we get its source.
137 * This means it has only 1 variant, not counting glBitmap and
140 boolean shader_has_one_variant
[MESA_SHADER_STAGES
];
142 boolean needs_texcoord_semantic
;
143 boolean apply_texture_swizzle_to_border_color
;
145 /* On old libGL's for linux we need to invalidate the drawables
146 * on glViewpport calls, this is set via a option.
148 boolean invalidate_on_gl_viewport
;
149 boolean draw_needs_minmax_index
;
150 boolean vertex_array_out_of_memory
;
151 boolean has_hw_atomics
;
153 /* Some state is contained in constant objects.
154 * Other state is just parameter values.
157 struct pipe_blend_state blend
;
158 struct pipe_depth_stencil_alpha_state depth_stencil
;
159 struct pipe_rasterizer_state rasterizer
;
160 struct pipe_sampler_state frag_samplers
[PIPE_MAX_SAMPLERS
];
161 GLuint num_frag_samplers
;
162 struct pipe_sampler_view
*frag_sampler_views
[PIPE_MAX_SAMPLERS
];
163 GLuint num_sampler_views
[PIPE_SHADER_TYPES
];
164 struct pipe_clip_state clip
;
168 } constants
[PIPE_SHADER_TYPES
];
171 unsigned fb_num_samples
;
172 unsigned fb_num_layers
;
174 unsigned num_viewports
;
175 struct pipe_scissor_state scissor
[PIPE_MAX_VIEWPORTS
];
176 struct pipe_viewport_state viewport
[PIPE_MAX_VIEWPORTS
];
180 struct pipe_scissor_state rects
[PIPE_MAX_WINDOW_RECTANGLES
];
183 GLuint poly_stipple
[32]; /**< In OpenGL's bottom-to-top order */
185 GLuint fb_orientation
;
187 bool enable_sample_locations
;
188 unsigned sample_locations_samples
;
189 uint8_t sample_locations
[
190 PIPE_MAX_SAMPLE_LOCATION_GRID_SIZE
*
191 PIPE_MAX_SAMPLE_LOCATION_GRID_SIZE
* 32];
194 uint64_t dirty
; /**< dirty states */
196 /** This masks out unused shader resources. Only valid in draw calls. */
197 uint64_t active_states
;
199 unsigned pin_thread_counter
; /* for L3 thread pinning on AMD Zen */
201 /* If true, further analysis of states is required to know if something
202 * has changed. Used mainly for shaders.
204 bool gfx_shaders_may_be_dirty
;
205 bool compute_shader_may_be_dirty
;
207 GLboolean vertdata_edgeflags
;
208 GLboolean edgeflag_culls_prims
;
210 struct st_vertex_program
*vp
; /**< Currently bound vertex program */
211 struct st_fragment_program
*fp
; /**< Currently bound fragment program */
212 struct st_common_program
*gp
; /**< Currently bound geometry program */
213 struct st_common_program
*tcp
; /**< Currently bound tess control program */
214 struct st_common_program
*tep
; /**< Currently bound tess eval program */
215 struct st_compute_program
*cp
; /**< Currently bound compute program */
217 struct st_vp_variant
*vp_variant
;
220 struct pipe_resource
*pixelmap_texture
;
221 struct pipe_sampler_view
*pixelmap_sampler_view
;
226 struct pipe_rasterizer_state rasterizer
;
227 struct pipe_sampler_state sampler
;
228 struct pipe_sampler_state atlas_sampler
;
229 enum pipe_format tex_format
;
230 struct st_bitmap_cache cache
;
233 /** for glDraw/CopyPixels */
238 /** Cache of glDrawPixels images */
240 struct drawpix_cache_entry entries
[NUM_DRAWPIX_CACHE_ENTRIES
];
244 /** for glReadPixels */
246 struct pipe_resource
*src
;
247 struct pipe_resource
*cache
;
248 enum pipe_format dst_format
;
256 struct pipe_rasterizer_state raster
;
257 struct pipe_viewport_state viewport
;
264 /* For gl(Compressed)Tex(Sub)Image */
266 struct pipe_rasterizer_state raster
;
267 struct pipe_blend_state upload_blend
;
271 void *download_fs
[3][PIPE_MAX_TEXTURE_TYPES
];
273 bool download_enabled
;
279 /** for drawing with st_util_vertex */
280 struct pipe_vertex_element util_velems
[3];
282 /** passthrough vertex shader matching the util_velem attributes */
283 void *passthrough_vs
;
285 enum pipe_texture_target internal_target
;
287 struct cso_context
*cso_context
;
289 void *winsys_drawable_handle
;
291 /* The number of vertex buffers from the last call of validate_arrays. */
292 unsigned last_num_vbuffers
;
297 struct st_config_options options
;
299 struct st_perf_monitor_group
*perfmon
;
301 enum pipe_reset_status reset_status
;
303 /* Array of bound texture/image handles which are resident in the context.
305 struct st_bound_handles bound_texture_handles
[PIPE_SHADER_TYPES
];
306 struct st_bound_handles bound_image_handles
[PIPE_SHADER_TYPES
];
309 struct list_head winsys_buffers
;
311 /* Throttling for texture uploads and similar operations to limit memory
312 * usage by limiting the number of in-flight operations based on
313 * the estimated allocated size needed to execute those operations.
315 struct util_throttle throttle
;
319 /* Need this so that we can implement Mesa callbacks in this module.
321 static inline struct st_context
*st_context(struct gl_context
*ctx
)
328 * Wrapper for struct gl_framebuffer.
329 * This is an opaque type to the outside world.
331 struct st_framebuffer
333 struct gl_framebuffer Base
;
335 struct st_framebuffer_iface
*iface
;
336 enum st_attachment_type statts
[ST_ATTACHMENT_COUNT
];
342 /* list of framebuffer objects */
343 struct list_head head
;
347 extern void st_init_driver_functions(struct pipe_screen
*screen
,
348 struct dd_function_table
*functions
);
351 st_invalidate_buffers(struct st_context
*st
);
353 /* Invalidate the readpixels cache to ensure we don't read stale data.
356 st_invalidate_readpix_cache(struct st_context
*st
)
358 if (unlikely(st
->readpix_cache
.src
)) {
359 pipe_resource_reference(&st
->readpix_cache
.src
, NULL
);
360 pipe_resource_reference(&st
->readpix_cache
.cache
, NULL
);
369 st_fb_orientation(const struct gl_framebuffer
*fb
)
371 if (fb
&& _mesa_is_winsys_fbo(fb
)) {
372 /* Drawing into a window (on-screen buffer).
374 * Negate Y scale to flip image vertically.
375 * The NDC Y coords prior to viewport transformation are in the range
376 * [y=-1=bottom, y=1=top]
377 * Hardware window coords are in the range [y=0=top, y=H-1=bottom] where
378 * H is the window height.
379 * Use the viewport transformation to invert Y.
384 /* Drawing into user-created FBO (very likely a texture).
386 * For textures, T=0=Bottom, so by extension Y=0=Bottom for rendering.
394 st_user_clip_planes_enabled(struct gl_context
*ctx
)
396 return (ctx
->API
== API_OPENGL_COMPAT
||
397 ctx
->API
== API_OPENGLES
) && /* only ES 1.x */
398 ctx
->Transform
.ClipPlanesEnabled
;
401 /** clear-alloc a struct-sized object, with casting */
402 #define ST_CALLOC_STRUCT(T) (struct T *) calloc(1, sizeof(struct T))
405 extern struct st_context
*
406 st_create_context(gl_api api
, struct pipe_context
*pipe
,
407 const struct gl_config
*visual
,
408 struct st_context
*share
,
409 const struct st_config_options
*options
,
413 st_destroy_context(struct st_context
*st
);
416 st_get_active_states(struct gl_context
*ctx
);