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mesa/src/gallium/drivers/softpipe/sp_screen.c
Alyssa Rosenzweig fda7d17e81 gallium: Default to PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT 
Supported in all hardware and software drivers. Only that don't support
are virgl and svga, depending on host capabilities. I don't think
there's anything to be done there. This does give fewer places to screw
up the CAPs, though, because everyone wants ARB_buffer_storage.

Signed-off-by: Alyssa Rosenzweig <alyssa@collabora.com>
Reviewed-by: Emma Anholt <emma@anholt.net>
Reviewed-by: Marek Ol<C5><A1><C3><A1>k <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19392>
2022-10-31 23:35:33 -04:00

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/**************************************************************************
*
* Copyright 2008 VMware, Inc.
* All Rights Reserved.
*
* 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, sub license, 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 NON-INFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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 "compiler/nir/nir.h"
#include "util/u_memory.h"
#include "util/format/u_format.h"
#include "util/format/u_format_s3tc.h"
#include "util/u_screen.h"
#include "util/u_video.h"
#include "util/os_misc.h"
#include "util/os_time.h"
#include "pipe/p_defines.h"
#include "pipe/p_screen.h"
#include "draw/draw_context.h"
#include "frontend/sw_winsys.h"
#include "tgsi/tgsi_exec.h"
#include "sp_texture.h"
#include "sp_screen.h"
#include "sp_context.h"
#include "sp_fence.h"
#include "sp_public.h"
static const struct debug_named_value sp_debug_options[] = {
{"vs", SP_DBG_VS, "dump vertex shader assembly to stderr"},
{"gs", SP_DBG_GS, "dump geometry shader assembly to stderr"},
{"fs", SP_DBG_FS, "dump fragment shader assembly to stderr"},
{"cs", SP_DBG_CS, "dump compute shader assembly to stderr"},
{"no_rast", SP_DBG_NO_RAST, "no-ops rasterization, for profiling purposes"},
{"use_llvm", SP_DBG_USE_LLVM, "Use LLVM if available for shaders"},
{"use_tgsi", SP_DBG_USE_TGSI, "Request TGSI from the API instead of NIR"},
DEBUG_NAMED_VALUE_END
};
int sp_debug;
DEBUG_GET_ONCE_FLAGS_OPTION(sp_debug, "SOFTPIPE_DEBUG", sp_debug_options, 0)
static const char *
softpipe_get_vendor(struct pipe_screen *screen)
{
return "Mesa/X.org";
}
static const char *
softpipe_get_name(struct pipe_screen *screen)
{
return "softpipe";
}
static const nir_shader_compiler_options sp_compiler_options = {
.fdot_replicates = true,
.fuse_ffma32 = true,
.fuse_ffma64 = true,
.lower_extract_byte = true,
.lower_extract_word = true,
.lower_insert_byte = true,
.lower_insert_word = true,
.lower_fdph = true,
.lower_flrp64 = true,
.lower_fmod = true,
.lower_rotate = true,
.lower_uniforms_to_ubo = true,
.lower_vector_cmp = true,
.lower_int64_options = nir_lower_imul_2x32_64,
.max_unroll_iterations = 32,
.use_interpolated_input_intrinsics = true,
/* TGSI doesn't have a semantic for local or global index, just local and
* workgroup id.
*/
.lower_cs_local_index_to_id = true,
};
static const void *
softpipe_get_compiler_options(struct pipe_screen *pscreen,
enum pipe_shader_ir ir,
enum pipe_shader_type shader)
{
assert(ir == PIPE_SHADER_IR_NIR);
return &sp_compiler_options;
}
static int
softpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
{
struct softpipe_screen *sp_screen = softpipe_screen(screen);
switch (param) {
case PIPE_CAP_NPOT_TEXTURES:
case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
case PIPE_CAP_MIXED_COLOR_DEPTH_BITS:
return 1;
case PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD:
case PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES:
return 1;
case PIPE_CAP_ANISOTROPIC_FILTER:
return 1;
case PIPE_CAP_MAX_RENDER_TARGETS:
return PIPE_MAX_COLOR_BUFS;
case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
return 1;
case PIPE_CAP_OCCLUSION_QUERY:
return 1;
case PIPE_CAP_QUERY_TIME_ELAPSED:
return 1;
case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
return 1;
case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
case PIPE_CAP_TEXTURE_MIRROR_CLAMP_TO_EDGE:
return 1;
case PIPE_CAP_TEXTURE_SWIZZLE:
return 1;
case PIPE_CAP_MAX_TEXTURE_2D_SIZE:
return 1 << (SP_MAX_TEXTURE_2D_LEVELS - 1);
case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
return SP_MAX_TEXTURE_3D_LEVELS;
case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
return SP_MAX_TEXTURE_CUBE_LEVELS;
case PIPE_CAP_BLEND_EQUATION_SEPARATE:
case PIPE_CAP_RGB_OVERRIDE_DST_ALPHA_BLEND:
return 1;
case PIPE_CAP_INDEP_BLEND_ENABLE:
return 1;
case PIPE_CAP_INDEP_BLEND_FUNC:
return 1;
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:
return 1;
case PIPE_CAP_DEPTH_CLIP_DISABLE:
case PIPE_CAP_DEPTH_BOUNDS_TEST:
return 1;
case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
return PIPE_MAX_SO_BUFFERS;
case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
return 16*4;
case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
return 1024;
case PIPE_CAP_MAX_VERTEX_STREAMS:
if (sp_screen->use_llvm)
return 1;
else
return PIPE_MAX_VERTEX_STREAMS;
case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
return 2048;
case PIPE_CAP_PRIMITIVE_RESTART:
case PIPE_CAP_PRIMITIVE_RESTART_FIXED_INDEX:
return 1;
case PIPE_CAP_SHADER_STENCIL_EXPORT:
return 1;
case PIPE_CAP_IMAGE_ATOMIC_FLOAT_ADD:
case PIPE_CAP_VS_INSTANCEID:
case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
case PIPE_CAP_START_INSTANCE:
return 1;
case PIPE_CAP_SEAMLESS_CUBE_MAP:
case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
return 1;
case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
return 256; /* for GL3 */
case PIPE_CAP_MIN_TEXEL_OFFSET:
return -8;
case PIPE_CAP_MAX_TEXEL_OFFSET:
return 7;
case PIPE_CAP_CONDITIONAL_RENDER:
case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
case PIPE_CAP_VERTEX_COLOR_UNCLAMPED: /* draw module */
case PIPE_CAP_VERTEX_COLOR_CLAMPED: /* draw module */
return 1;
case PIPE_CAP_GLSL_FEATURE_LEVEL:
case PIPE_CAP_GLSL_FEATURE_LEVEL_COMPATIBILITY:
return 400;
case PIPE_CAP_COMPUTE:
return 1;
case PIPE_CAP_USER_VERTEX_BUFFERS:
case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
case PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS:
case PIPE_CAP_VS_LAYER_VIEWPORT:
case PIPE_CAP_DOUBLES:
case PIPE_CAP_INT64:
case PIPE_CAP_INT64_DIVMOD:
case PIPE_CAP_TGSI_DIV:
return 1;
case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
return 16;
case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
return 64;
case PIPE_CAP_QUERY_TIMESTAMP:
case PIPE_CAP_CUBE_MAP_ARRAY:
return 1;
case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
return 1;
case PIPE_CAP_MAX_TEXEL_BUFFER_ELEMENTS_UINT:
return 65536;
case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
return 16;
case PIPE_CAP_TEXTURE_TRANSFER_MODES:
return 0;
case PIPE_CAP_MAX_VIEWPORTS:
return PIPE_MAX_VIEWPORTS;
case PIPE_CAP_ENDIANNESS:
return PIPE_ENDIAN_NATIVE;
case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
return 4;
case PIPE_CAP_TEXTURE_GATHER_SM5:
case PIPE_CAP_TEXTURE_QUERY_LOD:
return 1;
case PIPE_CAP_VS_WINDOW_SPACE_POSITION:
return 1;
case PIPE_CAP_FS_FINE_DERIVATIVE:
return 1;
case PIPE_CAP_SAMPLER_VIEW_TARGET:
return 1;
case PIPE_CAP_FAKE_SW_MSAA:
return 1;
case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
return -32;
case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
return 31;
case PIPE_CAP_DRAW_INDIRECT:
return 1;
case PIPE_CAP_QUERY_SO_OVERFLOW:
return 1;
case PIPE_CAP_NIR_IMAGES_AS_DEREF:
return 0;
case PIPE_CAP_SHAREABLE_SHADERS:
/* Can't expose shareable shaders because the draw shaders reference the
* draw module's state, which is per-context.
*/
return 0;
case PIPE_CAP_VENDOR_ID:
return 0xFFFFFFFF;
case PIPE_CAP_DEVICE_ID:
return 0xFFFFFFFF;
case PIPE_CAP_ACCELERATED:
return 0;
case PIPE_CAP_VIDEO_MEMORY: {
/* XXX: Do we want to return the full amount fo system memory ? */
uint64_t system_memory;
if (!os_get_total_physical_memory(&system_memory))
return 0;
if (sizeof(void *) == 4)
/* Cap to 2 GB on 32 bits system. We do this because softpipe does
* eat application memory, which is quite limited on 32 bits. App
* shouldn't expect too much available memory. */
system_memory = MIN2(system_memory, 2048 << 20);
return (int)(system_memory >> 20);
}
case PIPE_CAP_UMA:
return 0;
case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
return 1;
case PIPE_CAP_CLIP_HALFZ:
case PIPE_CAP_TEXTURE_FLOAT_LINEAR:
case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
return 1;
case PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT:
case PIPE_CAP_CULL_DISTANCE:
case PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS:
case PIPE_CAP_SHADER_ARRAY_COMPONENTS:
case PIPE_CAP_TGSI_TEXCOORD:
return 1;
case PIPE_CAP_CLEAR_TEXTURE:
return 1;
case PIPE_CAP_MAX_VARYINGS:
return TGSI_EXEC_MAX_INPUT_ATTRIBS;
case PIPE_CAP_PCI_GROUP:
case PIPE_CAP_PCI_BUS:
case PIPE_CAP_PCI_DEVICE:
case PIPE_CAP_PCI_FUNCTION:
return 0;
case PIPE_CAP_MAX_GS_INVOCATIONS:
return 32;
case PIPE_CAP_MAX_SHADER_BUFFER_SIZE_UINT:
return 1 << 27;
case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
return 4;
case PIPE_CAP_IMAGE_STORE_FORMATTED:
return 1;
default:
return u_pipe_screen_get_param_defaults(screen, param);
}
}
static int
softpipe_get_shader_param(struct pipe_screen *screen,
enum pipe_shader_type shader,
enum pipe_shader_cap param)
{
struct softpipe_screen *sp_screen = softpipe_screen(screen);
switch (param) {
case PIPE_SHADER_CAP_PREFERRED_IR:
return (sp_debug & SP_DBG_USE_TGSI) ? PIPE_SHADER_IR_TGSI : PIPE_SHADER_IR_NIR;
case PIPE_SHADER_CAP_SUPPORTED_IRS:
return (1 << PIPE_SHADER_IR_NIR) | (1 << PIPE_SHADER_IR_TGSI);
default:
break;
}
switch(shader)
{
case PIPE_SHADER_FRAGMENT:
return tgsi_exec_get_shader_param(param);
case PIPE_SHADER_COMPUTE:
return tgsi_exec_get_shader_param(param);
case PIPE_SHADER_VERTEX:
case PIPE_SHADER_GEOMETRY:
if (sp_screen->use_llvm)
return draw_get_shader_param(shader, param);
else
return draw_get_shader_param_no_llvm(shader, param);
default:
return 0;
}
}
static float
softpipe_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
{
switch (param) {
case PIPE_CAPF_MIN_LINE_WIDTH:
case PIPE_CAPF_MIN_LINE_WIDTH_AA:
case PIPE_CAPF_MIN_POINT_SIZE:
case PIPE_CAPF_MIN_POINT_SIZE_AA:
return 1;
case PIPE_CAPF_POINT_SIZE_GRANULARITY:
case PIPE_CAPF_LINE_WIDTH_GRANULARITY:
return 0.1;
case PIPE_CAPF_MAX_LINE_WIDTH:
FALLTHROUGH;
case PIPE_CAPF_MAX_LINE_WIDTH_AA:
return 255.0; /* arbitrary */
case PIPE_CAPF_MAX_POINT_SIZE:
FALLTHROUGH;
case PIPE_CAPF_MAX_POINT_SIZE_AA:
return 255.0; /* arbitrary */
case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
return 16.0;
case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
return 16.0; /* arbitrary */
case PIPE_CAPF_MIN_CONSERVATIVE_RASTER_DILATE:
return 0.0;
case PIPE_CAPF_MAX_CONSERVATIVE_RASTER_DILATE:
return 0.0;
case PIPE_CAPF_CONSERVATIVE_RASTER_DILATE_GRANULARITY:
return 0.0;
}
/* should only get here on unhandled cases */
debug_printf("Unexpected PIPE_CAPF %d query\n", param);
return 0.0;
}
/**
* Query format support for creating a texture, drawing surface, etc.
* \param format the format to test
* \param type one of PIPE_TEXTURE, PIPE_SURFACE
*/
static bool
softpipe_is_format_supported( struct pipe_screen *screen,
enum pipe_format format,
enum pipe_texture_target target,
unsigned sample_count,
unsigned storage_sample_count,
unsigned bind)
{
struct sw_winsys *winsys = softpipe_screen(screen)->winsys;
const struct util_format_description *format_desc;
assert(target == PIPE_BUFFER ||
target == PIPE_TEXTURE_1D ||
target == PIPE_TEXTURE_1D_ARRAY ||
target == PIPE_TEXTURE_2D ||
target == PIPE_TEXTURE_2D_ARRAY ||
target == PIPE_TEXTURE_RECT ||
target == PIPE_TEXTURE_3D ||
target == PIPE_TEXTURE_CUBE ||
target == PIPE_TEXTURE_CUBE_ARRAY);
if (MAX2(1, sample_count) != MAX2(1, storage_sample_count))
return false;
format_desc = util_format_description(format);
if (sample_count > 1)
return false;
if (bind & (PIPE_BIND_DISPLAY_TARGET |
PIPE_BIND_SCANOUT |
PIPE_BIND_SHARED)) {
if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
return false;
}
if (bind & PIPE_BIND_RENDER_TARGET) {
if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS)
return false;
/*
* Although possible, it is unnatural to render into compressed or YUV
* surfaces. So disable these here to avoid going into weird paths
* inside gallium frontends.
*/
if (format_desc->block.width != 1 ||
format_desc->block.height != 1)
return false;
}
if (bind & PIPE_BIND_DEPTH_STENCIL) {
if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
return false;
}
if (format_desc->layout == UTIL_FORMAT_LAYOUT_ASTC ||
format_desc->layout == UTIL_FORMAT_LAYOUT_ATC) {
/* Software decoding is not hooked up. */
return false;
}
if ((bind & (PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW)) &&
((bind & PIPE_BIND_DISPLAY_TARGET) == 0) &&
target != PIPE_BUFFER) {
const struct util_format_description *desc =
util_format_description(format);
if (desc->nr_channels == 3 && desc->is_array) {
/* Don't support any 3-component formats for rendering/texturing
* since we don't support the corresponding 8-bit 3 channel UNORM
* formats. This allows us to support GL_ARB_copy_image between
* GL_RGB8 and GL_RGB8UI, for example. Otherwise, we may be asked to
* do a resource copy between PIPE_FORMAT_R8G8B8_UINT and
* PIPE_FORMAT_R8G8B8X8_UNORM, for example, which will not work
* (different bpp).
*/
return false;
}
}
if (format_desc->layout == UTIL_FORMAT_LAYOUT_ETC &&
format != PIPE_FORMAT_ETC1_RGB8)
return false;
/*
* All other operations (sampling, transfer, etc).
*/
/*
* Everything else should be supported by u_format.
*/
return true;
}
static void
softpipe_destroy_screen( struct pipe_screen *screen )
{
struct softpipe_screen *sp_screen = softpipe_screen(screen);
struct sw_winsys *winsys = sp_screen->winsys;
if(winsys->destroy)
winsys->destroy(winsys);
FREE(screen);
}
/* This is often overriden by the co-state tracker.
*/
static void
softpipe_flush_frontbuffer(struct pipe_screen *_screen,
struct pipe_context *pipe,
struct pipe_resource *resource,
unsigned level, unsigned layer,
void *context_private,
struct pipe_box *sub_box)
{
struct softpipe_screen *screen = softpipe_screen(_screen);
struct sw_winsys *winsys = screen->winsys;
struct softpipe_resource *texture = softpipe_resource(resource);
assert(texture->dt);
if (texture->dt)
winsys->displaytarget_display(winsys, texture->dt, context_private, sub_box);
}
static int
softpipe_get_compute_param(struct pipe_screen *_screen,
enum pipe_shader_ir ir_type,
enum pipe_compute_cap param,
void *ret)
{
switch (param) {
case PIPE_COMPUTE_CAP_IR_TARGET:
return 0;
case PIPE_COMPUTE_CAP_MAX_GRID_SIZE:
if (ret) {
uint64_t *grid_size = ret;
grid_size[0] = 65535;
grid_size[1] = 65535;
grid_size[2] = 65535;
}
return 3 * sizeof(uint64_t) ;
case PIPE_COMPUTE_CAP_MAX_BLOCK_SIZE:
if (ret) {
uint64_t *block_size = ret;
block_size[0] = 1024;
block_size[1] = 1024;
block_size[2] = 1024;
}
return 3 * sizeof(uint64_t);
case PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK:
if (ret) {
uint64_t *max_threads_per_block = ret;
*max_threads_per_block = 1024;
}
return sizeof(uint64_t);
case PIPE_COMPUTE_CAP_MAX_LOCAL_SIZE:
if (ret) {
uint64_t *max_local_size = ret;
*max_local_size = 32768;
}
return sizeof(uint64_t);
case PIPE_COMPUTE_CAP_GRID_DIMENSION:
case PIPE_COMPUTE_CAP_MAX_GLOBAL_SIZE:
case PIPE_COMPUTE_CAP_MAX_PRIVATE_SIZE:
case PIPE_COMPUTE_CAP_MAX_INPUT_SIZE:
case PIPE_COMPUTE_CAP_MAX_MEM_ALLOC_SIZE:
case PIPE_COMPUTE_CAP_MAX_CLOCK_FREQUENCY:
case PIPE_COMPUTE_CAP_MAX_COMPUTE_UNITS:
case PIPE_COMPUTE_CAP_IMAGES_SUPPORTED:
case PIPE_COMPUTE_CAP_SUBGROUP_SIZE:
case PIPE_COMPUTE_CAP_ADDRESS_BITS:
case PIPE_COMPUTE_CAP_MAX_VARIABLE_THREADS_PER_BLOCK:
break;
}
return 0;
}
/**
* Create a new pipe_screen object
* Note: we're not presently subclassing pipe_screen (no softpipe_screen).
*/
struct pipe_screen *
softpipe_create_screen(struct sw_winsys *winsys)
{
struct softpipe_screen *screen = CALLOC_STRUCT(softpipe_screen);
if (!screen)
return NULL;
sp_debug = debug_get_option_sp_debug();
screen->winsys = winsys;
screen->base.destroy = softpipe_destroy_screen;
screen->base.get_name = softpipe_get_name;
screen->base.get_vendor = softpipe_get_vendor;
screen->base.get_device_vendor = softpipe_get_vendor; // TODO should be the CPU vendor
screen->base.get_param = softpipe_get_param;
screen->base.get_shader_param = softpipe_get_shader_param;
screen->base.get_paramf = softpipe_get_paramf;
screen->base.get_timestamp = u_default_get_timestamp;
screen->base.is_format_supported = softpipe_is_format_supported;
screen->base.context_create = softpipe_create_context;
screen->base.flush_frontbuffer = softpipe_flush_frontbuffer;
screen->base.get_compute_param = softpipe_get_compute_param;
screen->base.get_compiler_options = softpipe_get_compiler_options;
screen->use_llvm = sp_debug & SP_DBG_USE_LLVM;
softpipe_init_screen_texture_funcs(&screen->base);
softpipe_init_screen_fence_funcs(&screen->base);
return &screen->base;
}
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