u_screen.c revision 01e04c3f 
1/*
2 * Copyright © 2018 Broadcom
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 */
23
24#include "pipe/p_screen.h"
25#include "util/u_screen.h"
26
27/**
28 * Helper to use from a pipe_screen->get_param() implementation to return
29 * default values for unsupported PIPE_CAPs.
30 *
31 * Call this function from your pipe_screen->get_param() implementation's
32 * default case, so that implementors of new pipe caps don't need to
33 */
34int
35u_pipe_screen_get_param_defaults(struct pipe_screen *pscreen,
36                                 enum pipe_cap param)
37{
38   /* Let's keep these sorted by position in p_defines.h. */
39   switch (param) {
40   case PIPE_CAP_NPOT_TEXTURES:
41   case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
42   case PIPE_CAP_ANISOTROPIC_FILTER:
43   case PIPE_CAP_POINT_SPRITE:
44      return 0;
45
46   case PIPE_CAP_MAX_RENDER_TARGETS:
47      return 1;
48
49   case PIPE_CAP_OCCLUSION_QUERY:
50   case PIPE_CAP_QUERY_TIME_ELAPSED:
51   case PIPE_CAP_TEXTURE_SWIZZLE:
52      return 0;
53
54   case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
55   case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
56   case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
57      unreachable("driver must implement these.");
58
59   case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
60   case PIPE_CAP_BLEND_EQUATION_SEPARATE:
61   case PIPE_CAP_SM3:
62   case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS: /* enables EXT_transform_feedback */
63   case PIPE_CAP_PRIMITIVE_RESTART:
64   case PIPE_CAP_INDEP_BLEND_ENABLE:
65   case PIPE_CAP_INDEP_BLEND_FUNC:
66   case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS: /* Enables GL_EXT_texture_array */
67   case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
68   case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
69   case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
70   case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
71   case PIPE_CAP_DEPTH_CLIP_DISABLE:
72   case PIPE_CAP_DEPTH_CLIP_DISABLE_SEPARATE:
73   case PIPE_CAP_SHADER_STENCIL_EXPORT:
74   case PIPE_CAP_TGSI_INSTANCEID:
75   case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
76   case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
77   case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
78   case PIPE_CAP_SEAMLESS_CUBE_MAP:
79   case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
80      return 0;
81
82   case PIPE_CAP_MIN_TEXEL_OFFSET:
83      /* GL 3.x minimum value. */
84      return -8;
85   case PIPE_CAP_MAX_TEXEL_OFFSET:
86      return 7;
87
88   case PIPE_CAP_CONDITIONAL_RENDER:
89   case PIPE_CAP_TEXTURE_BARRIER:
90      return 0;
91
92   case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
93      /* GL_EXT_transform_feedback minimum value. */
94      return 4;
95   case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
96      return 64;
97
98   case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
99   case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
100   case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
101   case PIPE_CAP_VERTEX_COLOR_CLAMPED:
102      return 0;
103
104   case PIPE_CAP_GLSL_FEATURE_LEVEL:
105   case PIPE_CAP_GLSL_FEATURE_LEVEL_COMPATIBILITY:
106      /* Minimum GLSL level implemented by gallium drivers. */
107      return 120;
108
109   case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
110   case PIPE_CAP_USER_VERTEX_BUFFERS:
111   case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
112   case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
113   case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
114   case PIPE_CAP_COMPUTE:
115      return 0;
116
117   case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
118      /* GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT default value. */
119      return 1;
120
121   case PIPE_CAP_START_INSTANCE:
122   case PIPE_CAP_QUERY_TIMESTAMP:
123   case PIPE_CAP_TEXTURE_MULTISAMPLE:
124      return 0;
125
126   case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
127      /* GL_ARB_map_buffer_alignment minimum value. All drivers expose the
128       * extension.
129       */
130      return 64;
131
132   case PIPE_CAP_CUBE_MAP_ARRAY:
133   case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
134      return 0;
135
136   case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
137      /* GL_EXT_texture_buffer minimum value. */
138      return 256;
139
140   case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
141   case PIPE_CAP_TGSI_TEXCOORD:
142      return 0;
143
144   case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
145      return 1;
146
147   case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
148   case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
149      return 0;
150
151   case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
152      /* GL_EXT_texture_buffer minimum value. */
153      return 65536;
154
155   case PIPE_CAP_MAX_VIEWPORTS:
156      return 1;
157
158   case PIPE_CAP_ENDIANNESS:
159      return PIPE_ENDIAN_LITTLE;
160
161   case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
162   case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
163   case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
164   case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
165   case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS: /* Enables ARB_texture_gather */
166   case PIPE_CAP_TEXTURE_GATHER_SM5:
167   case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
168   case PIPE_CAP_FAKE_SW_MSAA:
169   case PIPE_CAP_TEXTURE_QUERY_LOD:
170      return 0;
171
172   case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
173      return -8;
174   case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
175      return 7;
176
177   case PIPE_CAP_SAMPLE_SHADING:
178   case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
179   case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
180   case PIPE_CAP_MAX_VERTEX_STREAMS:
181   case PIPE_CAP_DRAW_INDIRECT:
182   case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
183      return 0;
184
185   case PIPE_CAP_VENDOR_ID:
186   case PIPE_CAP_DEVICE_ID:
187      return 0xffffffff;
188
189   case PIPE_CAP_ACCELERATED:
190   case PIPE_CAP_VIDEO_MEMORY:
191   case PIPE_CAP_UMA:
192      unreachable("driver must implement these.");
193
194   case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
195      return 0;
196
197   case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
198      /* GL minimum value */
199      return 2048;
200
201   case PIPE_CAP_SAMPLER_VIEW_TARGET:
202   case PIPE_CAP_CLIP_HALFZ:
203   case PIPE_CAP_VERTEXID_NOBASE:
204   case PIPE_CAP_POLYGON_OFFSET_CLAMP:
205   case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
206   case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
207   case PIPE_CAP_DEVICE_RESET_STATUS_QUERY:
208   case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
209   case PIPE_CAP_TEXTURE_FLOAT_LINEAR:
210   case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
211   case PIPE_CAP_DEPTH_BOUNDS_TEST:
212   case PIPE_CAP_TGSI_TXQS:
213   case PIPE_CAP_FORCE_PERSAMPLE_INTERP:
214   case PIPE_CAP_SHAREABLE_SHADERS:
215   case PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS:
216   case PIPE_CAP_CLEAR_TEXTURE:
217   case PIPE_CAP_DRAW_PARAMETERS:
218   case PIPE_CAP_TGSI_PACK_HALF_FLOAT:
219   case PIPE_CAP_MULTI_DRAW_INDIRECT:
220   case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS:
221   case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL:
222   case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL:
223      return 0;
224
225   case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
226      /* Enables GL_ARB_shader_storage_buffer_object */
227      return 0;
228
229   case PIPE_CAP_INVALIDATE_BUFFER:
230   case PIPE_CAP_GENERATE_MIPMAP:
231   case PIPE_CAP_STRING_MARKER:
232   case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
233   case PIPE_CAP_QUERY_BUFFER_OBJECT:
234   case PIPE_CAP_QUERY_MEMORY_INFO: /* Enables GL_ATI_meminfo */
235      return 0;
236
237   case PIPE_CAP_PCI_GROUP:
238   case PIPE_CAP_PCI_BUS:
239   case PIPE_CAP_PCI_DEVICE:
240   case PIPE_CAP_PCI_FUNCTION:
241      unreachable("driver must implement these.");
242
243   case PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT:
244   case PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR:
245   case PIPE_CAP_CULL_DISTANCE:
246   case PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES:
247   case PIPE_CAP_TGSI_VOTE:
248   case PIPE_CAP_MAX_WINDOW_RECTANGLES: /* Enables EXT_window_rectangles */
249   case PIPE_CAP_POLYGON_OFFSET_UNITS_UNSCALED:
250   case PIPE_CAP_VIEWPORT_SUBPIXEL_BITS:
251   case PIPE_CAP_MIXED_COLOR_DEPTH_BITS:
252   case PIPE_CAP_TGSI_ARRAY_COMPONENTS:
253   case PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS:
254   case PIPE_CAP_TGSI_CAN_READ_OUTPUTS:
255   case PIPE_CAP_NATIVE_FENCE_FD:
256      return 0;
257
258   case PIPE_CAP_RASTERIZER_SUBPIXEL_BITS:
259      return 4; /* GLES 2.0 minimum value */
260
261   case PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY:
262      return 1;
263
264   case PIPE_CAP_TGSI_FS_FBFETCH:
265   case PIPE_CAP_TGSI_MUL_ZERO_WINS:
266   case PIPE_CAP_DOUBLES:
267   case PIPE_CAP_INT64:
268   case PIPE_CAP_INT64_DIVMOD:
269   case PIPE_CAP_TGSI_TEX_TXF_LZ:
270   case PIPE_CAP_TGSI_CLOCK:
271   case PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE:
272   case PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE:
273   case PIPE_CAP_TGSI_BALLOT:
274   case PIPE_CAP_TGSI_TES_LAYER_VIEWPORT:
275   case PIPE_CAP_CAN_BIND_CONST_BUFFER_AS_VERTEX:
276      return 0;
277
278   case PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION:
279      /* Drivers generally support this, and it reduces GL overhead just to
280       * throw an error when buffers are mapped.
281       */
282      return 1;
283
284   case PIPE_CAP_POST_DEPTH_COVERAGE:
285   case PIPE_CAP_BINDLESS_TEXTURE:
286   case PIPE_CAP_NIR_SAMPLERS_AS_DEREF:
287   case PIPE_CAP_QUERY_SO_OVERFLOW:
288   case PIPE_CAP_MEMOBJ:
289   case PIPE_CAP_LOAD_CONSTBUF:
290   case PIPE_CAP_TGSI_ANY_REG_AS_ADDRESS:
291   case PIPE_CAP_TILE_RASTER_ORDER:
292      return 0;
293
294   case PIPE_CAP_MAX_COMBINED_SHADER_OUTPUT_RESOURCES:
295      /* nonzero overrides defaults */
296      return 0;
297
298   case PIPE_CAP_FRAMEBUFFER_MSAA_CONSTRAINTS:
299   case PIPE_CAP_SIGNED_VERTEX_BUFFER_OFFSET:
300   case PIPE_CAP_CONTEXT_PRIORITY_MASK:
301   case PIPE_CAP_FENCE_SIGNAL:
302   case PIPE_CAP_CONSTBUF0_FLAGS:
303   case PIPE_CAP_PACKED_UNIFORMS:
304   case PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_TRIANGLES:
305   case PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_POINTS_LINES:
306   case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_TRIANGLES:
307   case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_POINTS_LINES:
308   case PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS:
309   case PIPE_CAP_CONSERVATIVE_RASTER_POST_DEPTH_COVERAGE:
310   case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
311   case PIPE_CAP_MAX_COMBINED_SHADER_BUFFERS:
312   case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTERS:
313   case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTER_BUFFERS:
314      return 0;
315
316   case PIPE_CAP_MAX_GS_INVOCATIONS:
317      return 32;
318
319   case PIPE_CAP_MAX_SHADER_BUFFER_SIZE:
320      return 1 << 27;
321
322   case PIPE_CAP_TEXTURE_MIRROR_CLAMP_TO_EDGE:
323   case PIPE_CAP_MAX_TEXTURE_UPLOAD_MEMORY_BUDGET:
324      return 0;
325
326   case PIPE_CAP_MAX_VERTEX_ELEMENT_SRC_OFFSET:
327      return 2047;
328
329   default:
330      unreachable("bad PIPE_CAP_*");
331   }
332}
333