/************************************************************************** * * 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 "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 "state_tracker/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" DEBUG_GET_ONCE_BOOL_OPTION(use_llvm, "SOFTPIPE_USE_LLVM", FALSE) static const char * softpipe_get_vendor(struct pipe_screen *screen) { return "VMware, Inc."; } static const char * softpipe_get_name(struct pipe_screen *screen) { return "softpipe"; } 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: case PIPE_CAP_VERTEX_SHADER_SATURATE: return 1; case PIPE_CAP_ANISOTROPIC_FILTER: return 1; case PIPE_CAP_POINT_SPRITE: 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_TEXTURE_BORDER_COLOR_QUIRK: case PIPE_CAP_MAX_TEXTURE_UPLOAD_MEMORY_BUDGET: return 0; 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: return 1; case PIPE_CAP_INDEP_BLEND_ENABLE: return 1; case PIPE_CAP_INDEP_BLEND_FUNC: return 1; case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT: case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT: case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER: case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER: return 1; case PIPE_CAP_DEPTH_CLIP_DISABLE: 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: return 1; case PIPE_CAP_SHADER_STENCIL_EXPORT: return 1; case PIPE_CAP_TGSI_ATOMFADD: case PIPE_CAP_TGSI_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: return 1; case PIPE_CAP_TEXTURE_BARRIER: case PIPE_CAP_DEPTH_CLIP_DISABLE_SEPARATE: return 0; 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_MIXED_COLORBUFFER_FORMATS: return 1; case PIPE_CAP_GLSL_FEATURE_LEVEL: return 400; case PIPE_CAP_GLSL_FEATURE_LEVEL_COMPATIBILITY: return 140; case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION: case PIPE_CAP_TGSI_TEX_TXF_LZ: return 0; 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_TGSI_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_TGSI_CAN_COMPACT_CONSTANTS: 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_TEXTURE_MULTISAMPLE: return 0; 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_BUFFER_SAMPLER_VIEW_RGBA_ONLY: return 0; case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE: return 65536; case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT: return 16; case PIPE_CAP_TGSI_TEXCOORD: case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER: 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_BUFFER_MAP_PERSISTENT_COHERENT: case PIPE_CAP_SAMPLE_SHADING: case PIPE_CAP_TEXTURE_GATHER_OFFSETS: return 0; case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION: return 1; case PIPE_CAP_TGSI_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_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: return 1; case PIPE_CAP_VERTEXID_NOBASE: return 0; case PIPE_CAP_POLYGON_OFFSET_CLAMP: return 0; case PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS: case PIPE_CAP_TGSI_ARRAY_COMPONENTS: return 1; case PIPE_CAP_CLEAR_TEXTURE: return 1; case PIPE_CAP_MAX_VARYINGS: return TGSI_EXEC_MAX_INPUT_ATTRIBS; case PIPE_CAP_MULTISAMPLE_Z_RESOLVE: case PIPE_CAP_RESOURCE_FROM_USER_MEMORY: case PIPE_CAP_DEVICE_RESET_STATUS_QUERY: case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS: case PIPE_CAP_DEPTH_BOUNDS_TEST: case PIPE_CAP_TGSI_TXQS: case PIPE_CAP_FORCE_PERSAMPLE_INTERP: case PIPE_CAP_SHAREABLE_SHADERS: case PIPE_CAP_DRAW_PARAMETERS: case PIPE_CAP_TGSI_PACK_HALF_FLOAT: case PIPE_CAP_MULTI_DRAW_INDIRECT: case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS: case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL: case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL: 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: case PIPE_CAP_PCI_GROUP: case PIPE_CAP_PCI_BUS: case PIPE_CAP_PCI_DEVICE: case PIPE_CAP_PCI_FUNCTION: case PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR: case PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES: case PIPE_CAP_TGSI_VOTE: case PIPE_CAP_MAX_WINDOW_RECTANGLES: case PIPE_CAP_POLYGON_OFFSET_UNITS_UNSCALED: case PIPE_CAP_VIEWPORT_SUBPIXEL_BITS: case PIPE_CAP_TGSI_CAN_READ_OUTPUTS: case PIPE_CAP_NATIVE_FENCE_FD: case PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY: case PIPE_CAP_FBFETCH: case PIPE_CAP_TGSI_MUL_ZERO_WINS: case PIPE_CAP_TGSI_CLOCK: case PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE: case PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE: case PIPE_CAP_TGSI_BALLOT: case PIPE_CAP_TGSI_TES_LAYER_VIEWPORT: case PIPE_CAP_CAN_BIND_CONST_BUFFER_AS_VERTEX: case PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION: case PIPE_CAP_POST_DEPTH_COVERAGE: case PIPE_CAP_BINDLESS_TEXTURE: case PIPE_CAP_NIR_SAMPLERS_AS_DEREF: case PIPE_CAP_MEMOBJ: case PIPE_CAP_LOAD_CONSTBUF: case PIPE_CAP_TGSI_ANY_REG_AS_ADDRESS: case PIPE_CAP_TILE_RASTER_ORDER: case PIPE_CAP_MAX_COMBINED_SHADER_OUTPUT_RESOURCES: 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_CONSERVATIVE_RASTER_POST_DEPTH_COVERAGE: case PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS: case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS: return 0; case PIPE_CAP_MAX_GS_INVOCATIONS: return 32; case PIPE_CAP_MAX_SHADER_BUFFER_SIZE: return 1 << 27; case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT: return 4; 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(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_MAX_LINE_WIDTH: /* fall-through */ case PIPE_CAPF_MAX_LINE_WIDTH_AA: return 255.0; /* arbitrary */ case PIPE_CAPF_MAX_POINT_WIDTH: /* fall-through */ case PIPE_CAPF_MAX_POINT_WIDTH_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 (!format_desc) return false; 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 the state trackers. */ 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_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 uint64_t softpipe_get_timestamp(struct pipe_screen *_screen) { return os_time_get_nano(); } 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; 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 = softpipe_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->use_llvm = debug_get_option_use_llvm(); softpipe_init_screen_texture_funcs(&screen->base); softpipe_init_screen_fence_funcs(&screen->base); return &screen->base; }