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mesa/src/gallium/auxiliary/util/u_screen.c

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/*
* Copyright © 2018 Broadcom
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include <sys/stat.h>
#include "pipe/p_screen.h"
#include "util/u_screen.h"
#include "util/u_debug.h"
#include "util/os_file.h"
#include "util/os_time.h"
#include "util/simple_mtx.h"
#include "util/u_hash_table.h"
#include "util/u_pointer.h"
#include "util/macros.h"
#ifdef HAVE_LIBDRM
#include <xf86drm.h>
#endif
/**
* Helper to use from a pipe_screen->get_param() implementation to return
* default values for unsupported PIPE_CAPs.
*
* Call this function from your pipe_screen->get_param() implementation's
* default case, so that implementors of new pipe caps don't need to
*/
int
u_pipe_screen_get_param_defaults(struct pipe_screen *pscreen,
enum pipe_cap param)
{
UNUSED uint64_t cap;
UNUSED int fd;
assert(param < PIPE_CAP_LAST);
/* Let's keep these sorted by position in p_defines.h. */
switch (param) {
case PIPE_CAP_NPOT_TEXTURES:
case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
case PIPE_CAP_ANISOTROPIC_FILTER:
return 0;
case PIPE_CAP_GRAPHICS:
case PIPE_CAP_GL_CLAMP:
case PIPE_CAP_MAX_RENDER_TARGETS:
case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
case PIPE_CAP_DITHERING:
return 1;
case PIPE_CAP_OCCLUSION_QUERY:
case PIPE_CAP_QUERY_TIME_ELAPSED:
case PIPE_CAP_TEXTURE_SWIZZLE:
return 0;
case PIPE_CAP_MAX_TEXTURE_2D_SIZE:
case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
unreachable("driver must implement these.");
case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
case PIPE_CAP_BLEND_EQUATION_SEPARATE:
case PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD:
case PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES:
case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS: /* enables EXT_transform_feedback */
case PIPE_CAP_PRIMITIVE_RESTART:
case PIPE_CAP_PRIMITIVE_RESTART_FIXED_INDEX:
case PIPE_CAP_INDEP_BLEND_ENABLE:
case PIPE_CAP_INDEP_BLEND_FUNC:
case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS: /* Enables GL_EXT_texture_array */
case PIPE_CAP_FS_COORD_ORIGIN_UPPER_LEFT:
case PIPE_CAP_FS_COORD_ORIGIN_LOWER_LEFT:
case PIPE_CAP_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
case PIPE_CAP_FS_COORD_PIXEL_CENTER_INTEGER:
case PIPE_CAP_DEPTH_CLIP_DISABLE:
case PIPE_CAP_DEPTH_CLIP_DISABLE_SEPARATE:
case PIPE_CAP_DEPTH_CLAMP_ENABLE:
case PIPE_CAP_SHADER_STENCIL_EXPORT:
case PIPE_CAP_VS_INSTANCEID:
case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
case PIPE_CAP_SEAMLESS_CUBE_MAP:
case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
return 0;
case PIPE_CAP_SUPPORTED_PRIM_MODES_WITH_RESTART:
case PIPE_CAP_SUPPORTED_PRIM_MODES:
return BITFIELD_MASK(MESA_PRIM_COUNT);
case PIPE_CAP_MIN_TEXEL_OFFSET:
/* GL 3.x minimum value. */
return -8;
case PIPE_CAP_MAX_TEXEL_OFFSET:
return 7;
case PIPE_CAP_CONDITIONAL_RENDER:
case PIPE_CAP_TEXTURE_BARRIER:
return 0;
case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
/* GL_EXT_transform_feedback minimum value. */
return 4;
case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
return 64;
case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
case PIPE_CAP_VERTEX_COLOR_CLAMPED:
return 0;
case PIPE_CAP_GLSL_FEATURE_LEVEL:
case PIPE_CAP_GLSL_FEATURE_LEVEL_COMPATIBILITY:
/* Minimum GLSL level implemented by gallium drivers. */
return 120;
case PIPE_CAP_ESSL_FEATURE_LEVEL:
/* Tell gallium frontend to fallback to PIPE_CAP_GLSL_FEATURE_LEVEL */
return 0;
case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
case PIPE_CAP_USER_VERTEX_BUFFERS:
case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
case PIPE_CAP_VERTEX_ATTRIB_ELEMENT_ALIGNED_ONLY:
case PIPE_CAP_COMPUTE:
return 0;
case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
/* GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT default value. */
return 1;
case PIPE_CAP_START_INSTANCE:
case PIPE_CAP_QUERY_TIMESTAMP:
case PIPE_CAP_TIMER_RESOLUTION:
case PIPE_CAP_TEXTURE_MULTISAMPLE:
return 0;
case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
/* GL_ARB_map_buffer_alignment minimum value. All drivers expose the
* extension.
*/
return 64;
case PIPE_CAP_CUBE_MAP_ARRAY:
case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
return 0;
case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
/* GL_EXT_texture_buffer minimum value. */
return 256;
case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
case PIPE_CAP_TGSI_TEXCOORD:
return 0;
case PIPE_CAP_TEXTURE_TRANSFER_MODES:
return PIPE_TEXTURE_TRANSFER_BLIT;
case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
case PIPE_CAP_QUERY_PIPELINE_STATISTICS_SINGLE:
case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
return 0;
case PIPE_CAP_MAX_TEXEL_BUFFER_ELEMENTS_UINT:
/* GL_EXT_texture_buffer minimum value. */
return 65536;
case PIPE_CAP_LINEAR_IMAGE_PITCH_ALIGNMENT:
return 0;
case PIPE_CAP_LINEAR_IMAGE_BASE_ADDRESS_ALIGNMENT:
return 0;
case PIPE_CAP_MAX_VIEWPORTS:
return 1;
case PIPE_CAP_ENDIANNESS:
return PIPE_ENDIAN_LITTLE;
case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
case PIPE_CAP_VS_LAYER_VIEWPORT:
case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS: /* Enables ARB_texture_gather */
case PIPE_CAP_TEXTURE_GATHER_SM5:
return 0;
/* All new drivers should support persistent/coherent mappings. This CAP
* should only be unset by layered drivers whose host drivers cannot support
* coherent mappings.
*/
case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
return 1;
case PIPE_CAP_FAKE_SW_MSAA:
case PIPE_CAP_TEXTURE_QUERY_LOD:
return 0;
case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
return -8;
case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
return 7;
case PIPE_CAP_SAMPLE_SHADING:
case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
case PIPE_CAP_VS_WINDOW_SPACE_POSITION:
case PIPE_CAP_MAX_VERTEX_STREAMS:
case PIPE_CAP_DRAW_INDIRECT:
case PIPE_CAP_FS_FINE_DERIVATIVE:
return 0;
case PIPE_CAP_VENDOR_ID:
case PIPE_CAP_DEVICE_ID:
return 0xffffffff;
case PIPE_CAP_ACCELERATED:
case PIPE_CAP_VIDEO_MEMORY:
case PIPE_CAP_UMA:
unreachable("driver must implement these.");
case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
return 0;
case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
/* GL minimum value */
return 2048;
case PIPE_CAP_SAMPLER_VIEW_TARGET:
case PIPE_CAP_CLIP_HALFZ:
case PIPE_CAP_POLYGON_OFFSET_CLAMP:
case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
case PIPE_CAP_RESOURCE_FROM_USER_MEMORY_COMPUTE_ONLY:
case PIPE_CAP_DEVICE_RESET_STATUS_QUERY:
case PIPE_CAP_DEVICE_PROTECTED_SURFACE:
case PIPE_CAP_DEVICE_PROTECTED_CONTEXT:
case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
case PIPE_CAP_TEXTURE_FLOAT_LINEAR:
case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
case PIPE_CAP_DEPTH_BOUNDS_TEST:
case PIPE_CAP_TEXTURE_QUERY_SAMPLES:
case PIPE_CAP_FORCE_PERSAMPLE_INTERP:
return 0;
/* All drivers should expose this cap, as it is required for applications to
* be able to efficiently compile GL shaders from multiple threads during
* load.
*/
case PIPE_CAP_SHAREABLE_SHADERS:
return 1;
case PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS:
case PIPE_CAP_CLEAR_SCISSORED:
case PIPE_CAP_DRAW_PARAMETERS:
case PIPE_CAP_SHADER_PACK_HALF_FLOAT:
case PIPE_CAP_MULTI_DRAW_INDIRECT:
case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS:
case PIPE_CAP_FS_POSITION_IS_SYSVAL:
case PIPE_CAP_FS_POINT_IS_SYSVAL:
case PIPE_CAP_FS_FACE_IS_INTEGER_SYSVAL:
return 0;
case PIPE_CAP_MULTI_DRAW_INDIRECT_PARTIAL_STRIDE:
return 1;
case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
/* Enables GL_ARB_shader_storage_buffer_object */
return 0;
case PIPE_CAP_INVALIDATE_BUFFER:
case PIPE_CAP_GENERATE_MIPMAP:
case PIPE_CAP_STRING_MARKER:
case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
case PIPE_CAP_QUERY_BUFFER_OBJECT:
case PIPE_CAP_QUERY_MEMORY_INFO: /* Enables GL_ATI_meminfo */
return 0;
case PIPE_CAP_PCI_GROUP:
case PIPE_CAP_PCI_BUS:
case PIPE_CAP_PCI_DEVICE:
case PIPE_CAP_PCI_FUNCTION:
unreachable("driver must implement these.");
case PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT:
case PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR:
case PIPE_CAP_CULL_DISTANCE:
case PIPE_CAP_CULL_DISTANCE_NOCOMBINE:
case PIPE_CAP_SHADER_GROUP_VOTE:
case PIPE_CAP_MAX_WINDOW_RECTANGLES: /* Enables EXT_window_rectangles */
case PIPE_CAP_POLYGON_OFFSET_UNITS_UNSCALED:
case PIPE_CAP_VIEWPORT_SUBPIXEL_BITS:
case PIPE_CAP_VIEWPORT_SWIZZLE:
case PIPE_CAP_VIEWPORT_MASK:
case PIPE_CAP_MIXED_COLOR_DEPTH_BITS:
case PIPE_CAP_SHADER_ARRAY_COMPONENTS:
case PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS:
case PIPE_CAP_SHADER_CAN_READ_OUTPUTS:
case PIPE_CAP_NATIVE_FENCE_FD:
return 0;
case PIPE_CAP_RASTERIZER_SUBPIXEL_BITS:
return 4; /* GLES 2.0 minimum value */
case PIPE_CAP_PREFER_BACK_BUFFER_REUSE:
return 1;
case PIPE_CAP_GLSL_TESS_LEVELS_AS_INPUTS:
return 0;
case PIPE_CAP_FBFETCH:
case PIPE_CAP_FBFETCH_COHERENT:
case PIPE_CAP_FBFETCH_ZS:
case PIPE_CAP_BLEND_EQUATION_ADVANCED:
case PIPE_CAP_LEGACY_MATH_RULES:
case PIPE_CAP_FP16:
case PIPE_CAP_DOUBLES:
case PIPE_CAP_INT64:
case PIPE_CAP_TGSI_TEX_TXF_LZ:
case PIPE_CAP_SHADER_CLOCK:
case PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE:
case PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE:
case PIPE_CAP_SHADER_BALLOT:
case PIPE_CAP_TES_LAYER_VIEWPORT:
case PIPE_CAP_CAN_BIND_CONST_BUFFER_AS_VERTEX:
case PIPE_CAP_TGSI_DIV:
case PIPE_CAP_NIR_ATOMICS_AS_DEREF:
return 0;
case PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION:
/* Drivers generally support this, and it reduces GL overhead just to
* throw an error when buffers are mapped.
*/
return 1;
case PIPE_CAP_PREFER_IMM_ARRAYS_AS_CONSTBUF:
/* Don't unset this unless your driver can do better, like using nir_opt_large_constants() */
return 1;
case PIPE_CAP_POST_DEPTH_COVERAGE:
case PIPE_CAP_BINDLESS_TEXTURE:
case PIPE_CAP_NIR_SAMPLERS_AS_DEREF:
case PIPE_CAP_QUERY_SO_OVERFLOW:
case PIPE_CAP_MEMOBJ:
case PIPE_CAP_LOAD_CONSTBUF:
case PIPE_CAP_TILE_RASTER_ORDER:
return 0;
case PIPE_CAP_MAX_COMBINED_SHADER_OUTPUT_RESOURCES:
/* nonzero overrides defaults */
return 0;
case PIPE_CAP_FRAMEBUFFER_MSAA_CONSTRAINTS:
case PIPE_CAP_SIGNED_VERTEX_BUFFER_OFFSET:
case PIPE_CAP_CONTEXT_PRIORITY_MASK:
case PIPE_CAP_FENCE_SIGNAL:
case PIPE_CAP_CONSTBUF0_FLAGS:
case PIPE_CAP_PACKED_UNIFORMS:
case PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_TRIANGLES:
case PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_POINTS_LINES:
case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_TRIANGLES:
case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_POINTS_LINES:
case PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS:
case PIPE_CAP_CONSERVATIVE_RASTER_POST_DEPTH_COVERAGE:
case PIPE_CAP_CONSERVATIVE_RASTER_INNER_COVERAGE:
case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
case PIPE_CAP_MAX_COMBINED_SHADER_BUFFERS:
case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTERS:
case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTER_BUFFERS:
case PIPE_CAP_IMAGE_ATOMIC_FLOAT_ADD:
case PIPE_CAP_IMAGE_LOAD_FORMATTED:
case PIPE_CAP_IMAGE_STORE_FORMATTED:
case PIPE_CAP_PREFER_COMPUTE_FOR_MULTIMEDIA:
case PIPE_CAP_FRAGMENT_SHADER_INTERLOCK:
case PIPE_CAP_ATOMIC_FLOAT_MINMAX:
case PIPE_CAP_SHADER_SAMPLES_IDENTICAL:
case PIPE_CAP_IMAGE_ATOMIC_INC_WRAP:
case PIPE_CAP_TGSI_TG4_COMPONENT_IN_SWIZZLE:
case PIPE_CAP_GLSL_ZERO_INIT:
case PIPE_CAP_ALLOW_DRAW_OUT_OF_ORDER:
return 0;
case PIPE_CAP_MAX_GS_INVOCATIONS:
return 32;
case PIPE_CAP_MAX_SHADER_BUFFER_SIZE_UINT:
return 1 << 27;
case PIPE_CAP_TEXTURE_MIRROR_CLAMP_TO_EDGE:
case PIPE_CAP_MAX_TEXTURE_UPLOAD_MEMORY_BUDGET:
return 0;
case PIPE_CAP_MAX_VERTEX_ELEMENT_SRC_OFFSET:
return 2047;
case PIPE_CAP_SURFACE_SAMPLE_COUNT:
return 0;
case PIPE_CAP_DEST_SURFACE_SRGB_CONTROL:
return 1;
case PIPE_CAP_MAX_VARYINGS:
return 8;
case PIPE_CAP_COMPUTE_GRID_INFO_LAST_BLOCK:
return 0;
case PIPE_CAP_COMPUTE_SHADER_DERIVATIVES:
return 0;
case PIPE_CAP_THROTTLE:
return 1;
case PIPE_CAP_TEXTURE_SHADOW_LOD:
return 0;
case PIPE_CAP_GL_SPIRV:
case PIPE_CAP_GL_SPIRV_VARIABLE_POINTERS:
return 0;
case PIPE_CAP_DEMOTE_TO_HELPER_INVOCATION:
return 0;
case PIPE_CAP_DMABUF:
#if defined(HAVE_LIBDRM) && (DETECT_OS_LINUX || DETECT_OS_BSD || DETECT_OS_MANAGARM)
fd = pscreen->get_screen_fd(pscreen);
if (fd != -1 && (drmGetCap(fd, DRM_CAP_PRIME, &cap) == 0))
return cap;
else
return 0;
#else
return 0;
#endif
case PIPE_CAP_CL_GL_SHARING:
return 0;
case PIPE_CAP_TEXTURE_SHADOW_MAP: /* Enables ARB_shadow */
return 1;
case PIPE_CAP_FLATSHADE:
case PIPE_CAP_ALPHA_TEST:
case PIPE_CAP_POINT_SIZE_FIXED:
case PIPE_CAP_TWO_SIDED_COLOR:
case PIPE_CAP_CLIP_PLANES:
return 1;
case PIPE_CAP_MAX_VERTEX_BUFFERS:
return 16;
case PIPE_CAP_OPENCL_INTEGER_FUNCTIONS:
case PIPE_CAP_INTEGER_MULTIPLY_32X16:
return 0;
case PIPE_CAP_NIR_IMAGES_AS_DEREF:
return 1;
case PIPE_CAP_FRONTEND_NOOP:
/* Enables INTEL_blackhole_render */
return 0;
case PIPE_CAP_PACKED_STREAM_OUTPUT:
return 1;
case PIPE_CAP_VIEWPORT_TRANSFORM_LOWERED:
case PIPE_CAP_PSIZ_CLAMPED:
case PIPE_CAP_MAP_UNSYNCHRONIZED_THREAD_SAFE:
return 0;
case PIPE_CAP_GL_BEGIN_END_BUFFER_SIZE:
return 512 * 1024;
case PIPE_CAP_SYSTEM_SVM:
case PIPE_CAP_ALPHA_TO_COVERAGE_DITHER_CONTROL:
case PIPE_CAP_NO_CLIP_ON_COPY_TEX:
case PIPE_CAP_MAX_TEXTURE_MB:
case PIPE_CAP_PREFER_REAL_BUFFER_IN_CONSTBUF0:
return 0;
case PIPE_CAP_TEXRECT:
return 1;
case PIPE_CAP_SHADER_ATOMIC_INT64:
return 0;
case PIPE_CAP_SAMPLER_REDUCTION_MINMAX:
case PIPE_CAP_SAMPLER_REDUCTION_MINMAX_ARB:
return 0;
case PIPE_CAP_ALLOW_DYNAMIC_VAO_FASTPATH:
return 1;
case PIPE_CAP_EMULATE_NONFIXED_PRIMITIVE_RESTART:
case PIPE_CAP_DRAW_VERTEX_STATE:
return 0;
case PIPE_CAP_PREFER_POT_ALIGNED_VARYINGS:
return 0;
case PIPE_CAP_MAX_SPARSE_TEXTURE_SIZE:
case PIPE_CAP_MAX_SPARSE_3D_TEXTURE_SIZE:
case PIPE_CAP_MAX_SPARSE_ARRAY_TEXTURE_LAYERS:
case PIPE_CAP_SPARSE_TEXTURE_FULL_ARRAY_CUBE_MIPMAPS:
case PIPE_CAP_QUERY_SPARSE_TEXTURE_RESIDENCY:
case PIPE_CAP_CLAMP_SPARSE_TEXTURE_LOD:
case PIPE_CAP_TIMELINE_SEMAPHORE_IMPORT:
case PIPE_CAP_ALLOW_GLTHREAD_BUFFER_SUBDATA_OPT:
return 0;
case PIPE_CAP_MAX_CONSTANT_BUFFER_SIZE_UINT:
return pscreen->get_shader_param(pscreen, PIPE_SHADER_FRAGMENT,
PIPE_SHADER_CAP_MAX_CONST_BUFFER0_SIZE);
case PIPE_CAP_HARDWARE_GL_SELECT: {
/* =0: on CPU, always disabled
* >0: on GPU, enable by default, user can disable it manually
* <0: unknown, disable by default, user can enable it manually
*/
int accel = pscreen->get_param(pscreen, PIPE_CAP_ACCELERATED);
return !!accel && debug_get_bool_option("MESA_HW_ACCEL_SELECT", accel > 0) &&
/* internal geometry shader need indirect array access */
pscreen->get_shader_param(pscreen, PIPE_SHADER_GEOMETRY,
PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR) &&
/* internal geometry shader need SSBO support */
pscreen->get_shader_param(pscreen, PIPE_SHADER_GEOMETRY,
PIPE_SHADER_CAP_MAX_SHADER_BUFFERS);
}
case PIPE_CAP_QUERY_TIMESTAMP_BITS:
return 64;
case PIPE_CAP_VALIDATE_ALL_DIRTY_STATES:
case PIPE_CAP_NULL_TEXTURES:
case PIPE_CAP_ASTC_VOID_EXTENTS_NEED_DENORM_FLUSH:
case PIPE_CAP_HAS_CONST_BW:
return 0;
case PIPE_CAP_PERFORMANCE_MONITOR:
return pscreen->get_driver_query_info && pscreen->get_driver_query_group_info &&
pscreen->get_driver_query_group_info(pscreen, 0, NULL) != 0;
default:
unreachable("bad PIPE_CAP_*");
}
}
uint64_t u_default_get_timestamp(UNUSED struct pipe_screen *screen)
{
return os_time_get_nano();
}
static uint32_t
hash_file_description(const void *key)
{
int fd = pointer_to_intptr(key);
struct stat stat;
// File descriptions can't be hashed, but it should be safe to assume
// that the same file description will always refer to he same file
if (fstat(fd, &stat) == -1)
return ~0; // Make sure fstat failing won't result in a random hash
return stat.st_dev ^ stat.st_ino ^ stat.st_rdev;
}
static bool
equal_file_description(const void *key1, const void *key2)
{
int ret;
int fd1 = pointer_to_intptr(key1);
int fd2 = pointer_to_intptr(key2);
struct stat stat1, stat2;
// If the file descriptors are the same, the file description will be too
// This will also catch sentinels, such as -1
if (fd1 == fd2)
return true;
ret = os_same_file_description(fd1, fd2);
if (ret >= 0)
return (ret == 0);
{
static bool has_warned;
if (!has_warned)
fprintf(stderr, "os_same_file_description couldn't determine if "
"two DRM fds reference the same file description. (%s)\n"
"Let's just assume that file descriptors for the same file probably"
"share the file description instead. This may cause problems when"
"that isn't the case.\n", strerror(errno));
has_warned = true;
}
// Let's at least check that it's the same file, different files can't
// have the same file descriptions
fstat(fd1, &stat1);
fstat(fd2, &stat2);
return stat1.st_dev == stat2.st_dev &&
stat1.st_ino == stat2.st_ino &&
stat1.st_rdev == stat2.st_rdev;
}
static struct hash_table *
hash_table_create_file_description_keys(void)
{
return _mesa_hash_table_create(NULL, hash_file_description, equal_file_description);
}
static struct hash_table *fd_tab = NULL;
static simple_mtx_t screen_mutex = SIMPLE_MTX_INITIALIZER;
static void
drm_screen_destroy(struct pipe_screen *pscreen)
{
bool destroy;
simple_mtx_lock(&screen_mutex);
destroy = --pscreen->refcnt == 0;
if (destroy) {
int fd = pscreen->get_screen_fd(pscreen);
_mesa_hash_table_remove_key(fd_tab, intptr_to_pointer(fd));
if (!fd_tab->entries) {
_mesa_hash_table_destroy(fd_tab, NULL);
fd_tab = NULL;
}
}
simple_mtx_unlock(&screen_mutex);
if (destroy) {
pscreen->destroy = pscreen->winsys_priv;
pscreen->destroy(pscreen);
}
}
struct pipe_screen *
u_pipe_screen_lookup_or_create(int gpu_fd,
const struct pipe_screen_config *config,
struct renderonly *ro,
pipe_screen_create_function screen_create)
{
struct pipe_screen *pscreen = NULL;
simple_mtx_lock(&screen_mutex);
if (!fd_tab) {
fd_tab = hash_table_create_file_description_keys();
if (!fd_tab)
goto unlock;
}
pscreen = util_hash_table_get(fd_tab, intptr_to_pointer(gpu_fd));
if (pscreen) {
pscreen->refcnt++;
} else {
pscreen = screen_create(gpu_fd, config, ro);
if (pscreen) {
pscreen->refcnt = 1;
_mesa_hash_table_insert(fd_tab, intptr_to_pointer(gpu_fd), pscreen);
/* Bit of a hack, to avoid circular linkage dependency,
* ie. pipe driver having to call in to winsys, we
* override the pipe drivers screen->destroy() */
pscreen->winsys_priv = pscreen->destroy;
pscreen->destroy = drm_screen_destroy;
}
}
unlock:
simple_mtx_unlock(&screen_mutex);
return pscreen;
}
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