summaryrefslogtreecommitdiff
path: root/src/gallium/drivers/virgl/virgl_screen.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/gallium/drivers/virgl/virgl_screen.c')
-rw-r--r--src/gallium/drivers/virgl/virgl_screen.c557
1 files changed, 557 insertions, 0 deletions
diff --git a/src/gallium/drivers/virgl/virgl_screen.c b/src/gallium/drivers/virgl/virgl_screen.c
new file mode 100644
index 00000000000..2bc7f879487
--- /dev/null
+++ b/src/gallium/drivers/virgl/virgl_screen.c
@@ -0,0 +1,557 @@
+/*
+ * Copyright 2014, 2015 Red Hat.
+ *
+ * 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
+ * on 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
+ * THE AUTHOR(S) AND/OR THEIR 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/u_format.h"
+#include "util/u_format_s3tc.h"
+#include "util/u_video.h"
+#include "os/os_time.h"
+#include "pipe/p_defines.h"
+#include "pipe/p_screen.h"
+#include "draw/draw_context.h"
+#include "vl/vl_decoder.h"
+#include "vl/vl_video_buffer.h"
+
+#include "state_tracker/sw_winsys.h"
+#include "tgsi/tgsi_exec.h"
+
+#include "virgl.h"
+#include "virgl_resource.h"
+#include "virgl_public.h"
+#include "virgl_context.h"
+
+#define SP_MAX_TEXTURE_2D_LEVELS 15 /* 16K x 16K */
+#define SP_MAX_TEXTURE_3D_LEVELS 9 /* 512 x 512 x 512 */
+#define SP_MAX_TEXTURE_CUBE_LEVELS 13 /* 4K x 4K */
+
+static const char *
+virgl_get_vendor(struct pipe_screen *screen)
+{
+ return "Red Hat";
+}
+
+
+static const char *
+virgl_get_name(struct pipe_screen *screen)
+{
+ return "virgl";
+}
+
+static int
+virgl_get_param(struct pipe_screen *screen, enum pipe_cap param)
+{
+ struct virgl_screen *vscreen = virgl_screen(screen);
+ switch (param) {
+ case PIPE_CAP_NPOT_TEXTURES:
+ return 1;
+ case PIPE_CAP_TWO_SIDED_STENCIL:
+ return 1;
+ case PIPE_CAP_SM3:
+ return 1;
+ case PIPE_CAP_ANISOTROPIC_FILTER:
+ return 1;
+ case PIPE_CAP_POINT_SPRITE:
+ return 1;
+ case PIPE_CAP_MAX_RENDER_TARGETS:
+ return vscreen->caps.caps.v1.max_render_targets;
+ case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
+ return vscreen->caps.caps.v1.max_dual_source_render_targets;
+ case PIPE_CAP_OCCLUSION_QUERY:
+ return vscreen->caps.caps.v1.bset.occlusion_query;
+ case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
+ return vscreen->caps.caps.v1.bset.mirror_clamp;
+ case PIPE_CAP_TEXTURE_SHADOW_MAP:
+ return 1;
+ case PIPE_CAP_TEXTURE_SWIZZLE:
+ return 1;
+ case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
+ return SP_MAX_TEXTURE_2D_LEVELS;
+ 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 vscreen->caps.caps.v1.bset.indep_blend_enable;
+ case PIPE_CAP_INDEP_BLEND_FUNC:
+ return vscreen->caps.caps.v1.bset.indep_blend_func;
+ 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 vscreen->caps.caps.v1.bset.fragment_coord_conventions;
+ case PIPE_CAP_DEPTH_CLIP_DISABLE:
+ return vscreen->caps.caps.v1.bset.depth_clip_disable;
+ case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
+ return vscreen->caps.caps.v1.max_streamout_buffers;
+ case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
+ case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
+ return 16*4;
+ case PIPE_CAP_PRIMITIVE_RESTART:
+ return vscreen->caps.caps.v1.bset.primitive_restart;
+ case PIPE_CAP_SHADER_STENCIL_EXPORT:
+ return vscreen->caps.caps.v1.bset.shader_stencil_export;
+ case PIPE_CAP_TGSI_INSTANCEID:
+ case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
+ return 1;
+ case PIPE_CAP_SEAMLESS_CUBE_MAP:
+ return vscreen->caps.caps.v1.bset.seamless_cube_map;
+ case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
+ return vscreen->caps.caps.v1.bset.seamless_cube_map_per_texture;
+ case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
+ return vscreen->caps.caps.v1.max_texture_array_layers;
+ case PIPE_CAP_MIN_TEXEL_OFFSET:
+ case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
+ return -8;
+ case PIPE_CAP_MAX_TEXEL_OFFSET:
+ case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
+ return 7;
+ case PIPE_CAP_CONDITIONAL_RENDER:
+ return vscreen->caps.caps.v1.bset.conditional_render;
+ case PIPE_CAP_TEXTURE_BARRIER:
+ return 0;
+ case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
+ return 1;
+ case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
+ case PIPE_CAP_VERTEX_COLOR_CLAMPED:
+ return vscreen->caps.caps.v1.bset.color_clamping;
+ case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
+ return 1;
+ case PIPE_CAP_GLSL_FEATURE_LEVEL:
+ return vscreen->caps.caps.v1.glsl_level;
+ case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
+ return 0;
+ case PIPE_CAP_COMPUTE:
+ return 0;
+ case PIPE_CAP_USER_VERTEX_BUFFERS:
+ return 0;
+ case PIPE_CAP_USER_INDEX_BUFFERS:
+ case PIPE_CAP_USER_CONSTANT_BUFFERS:
+ return 1;
+ case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
+ return 16;
+ case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
+ return vscreen->caps.caps.v1.bset.streamout_pause_resume;
+ case PIPE_CAP_START_INSTANCE:
+ return vscreen->caps.caps.v1.bset.start_instance;
+ 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_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
+ return 0;
+ case PIPE_CAP_QUERY_TIMESTAMP:
+ return 1;
+ case PIPE_CAP_QUERY_TIME_ELAPSED:
+ return 0;
+ case PIPE_CAP_TGSI_TEXCOORD:
+ return 0;
+ case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
+ return VIRGL_MAP_BUFFER_ALIGNMENT;
+ case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
+ return vscreen->caps.caps.v1.max_tbo_size > 0;
+ case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
+ return 0;
+ case PIPE_CAP_CUBE_MAP_ARRAY:
+ return vscreen->caps.caps.v1.bset.cube_map_array;
+ case PIPE_CAP_TEXTURE_MULTISAMPLE:
+ return vscreen->caps.caps.v1.bset.texture_multisample;
+ case PIPE_CAP_MAX_VIEWPORTS:
+ return vscreen->caps.caps.v1.max_viewports;
+ case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
+ return vscreen->caps.caps.v1.max_tbo_size;
+ case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
+ case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
+ case PIPE_CAP_ENDIANNESS:
+ return 0;
+ case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
+ return 1;
+ case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
+ return 0;
+ case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
+ return 1024;
+ case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
+ return 16384;
+ case PIPE_CAP_TEXTURE_QUERY_LOD:
+ return vscreen->caps.caps.v1.bset.texture_query_lod;
+ case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
+ return vscreen->caps.caps.v1.max_texture_gather_components;
+ case PIPE_CAP_TEXTURE_GATHER_SM5:
+ case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
+ case PIPE_CAP_SAMPLE_SHADING:
+ case PIPE_CAP_FAKE_SW_MSAA:
+ case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
+ case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
+ case PIPE_CAP_MAX_VERTEX_STREAMS:
+ case PIPE_CAP_DRAW_INDIRECT:
+ case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
+ case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
+ case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
+ case PIPE_CAP_SAMPLER_VIEW_TARGET:
+ case PIPE_CAP_CLIP_HALFZ:
+ case PIPE_CAP_VERTEXID_NOBASE:
+ case PIPE_CAP_POLYGON_OFFSET_CLAMP:
+ 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_TEXTURE_FLOAT_LINEAR:
+ case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
+ case PIPE_CAP_DEPTH_BOUNDS_TEST:
+ case PIPE_CAP_TGSI_TXQS:
+ case PIPE_CAP_FORCE_PERSAMPLE_INTERP:
+ case PIPE_CAP_SHAREABLE_SHADERS:
+ return 0;
+ case PIPE_CAP_VENDOR_ID:
+ return 0x1af4;
+ case PIPE_CAP_DEVICE_ID:
+ return 0x1010;
+ case PIPE_CAP_ACCELERATED:
+ return 1;
+ case PIPE_CAP_UMA:
+ case PIPE_CAP_VIDEO_MEMORY:
+ return 0;
+ }
+ /* should only get here on unhandled cases */
+ debug_printf("Unexpected PIPE_CAP %d query\n", param);
+ return 0;
+}
+
+static int
+virgl_get_shader_param(struct pipe_screen *screen, unsigned shader, enum pipe_shader_cap param)
+{
+ struct virgl_screen *vscreen = virgl_screen(screen);
+ switch(shader)
+ {
+ case PIPE_SHADER_FRAGMENT:
+ case PIPE_SHADER_VERTEX:
+ case PIPE_SHADER_GEOMETRY:
+ switch (param) {
+ case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
+ case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
+ case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
+ case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
+ return INT_MAX;
+ case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
+ case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
+ case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
+ return 1;
+ case PIPE_SHADER_CAP_MAX_INPUTS:
+ if (vscreen->caps.caps.v1.glsl_level < 150)
+ return 16;
+ return shader == PIPE_SHADER_VERTEX ? 16 : 32;
+ case PIPE_SHADER_CAP_MAX_OUTPUTS:
+ return 128;
+ // case PIPE_SHADER_CAP_MAX_CONSTS:
+ // return 4096;
+ case PIPE_SHADER_CAP_MAX_TEMPS:
+ return 256;
+ case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
+ return vscreen->caps.caps.v1.max_uniform_blocks;
+ // case PIPE_SHADER_CAP_MAX_ADDRS:
+ // return 1;
+ case PIPE_SHADER_CAP_MAX_PREDS:
+ return 0;
+ case PIPE_SHADER_CAP_SUBROUTINES:
+ return 1;
+ case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
+ return 16;
+ case PIPE_SHADER_CAP_INTEGERS:
+ return vscreen->caps.caps.v1.glsl_level >= 130;
+ case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
+ return 32;
+ case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
+ return 4096 * sizeof(float[4]);
+ default:
+ return 0;
+ }
+ default:
+ return 0;
+ }
+}
+
+static float
+virgl_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_GUARD_BAND_LEFT:
+ case PIPE_CAPF_GUARD_BAND_TOP:
+ case PIPE_CAPF_GUARD_BAND_RIGHT:
+ case PIPE_CAPF_GUARD_BAND_BOTTOM:
+ return 0.0;
+ }
+ /* should only get here on unhandled cases */
+ debug_printf("Unexpected PIPE_CAPF %d query\n", param);
+ return 0.0;
+}
+
+static boolean
+virgl_is_vertex_format_supported(struct pipe_screen *screen,
+ enum pipe_format format)
+{
+ struct virgl_screen *vscreen = virgl_screen(screen);
+ const struct util_format_description *format_desc;
+ int i;
+
+ format_desc = util_format_description(format);
+ if (!format_desc)
+ return FALSE;
+
+ if (format == PIPE_FORMAT_R11G11B10_FLOAT) {
+ int vformat = VIRGL_FORMAT_R11G11B10_FLOAT;
+ int big = vformat / 32;
+ int small = vformat % 32;
+ if (!(vscreen->caps.caps.v1.vertexbuffer.bitmask[big] & (1 << small)))
+ return FALSE;
+ return TRUE;
+ }
+
+ /* Find the first non-VOID channel. */
+ for (i = 0; i < 4; i++) {
+ if (format_desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {
+ break;
+ }
+ }
+
+ if (i == 4)
+ return FALSE;
+
+ if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
+ return FALSE;
+
+ if (format_desc->channel[i].type == UTIL_FORMAT_TYPE_FIXED)
+ return FALSE;
+ return TRUE;
+}
+
+/**
+ * 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 boolean
+virgl_is_format_supported( struct pipe_screen *screen,
+ enum pipe_format format,
+ enum pipe_texture_target target,
+ unsigned sample_count,
+ unsigned bind)
+{
+ struct virgl_screen *vscreen = virgl_screen(screen);
+ const struct util_format_description *format_desc;
+ int i;
+
+ 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);
+
+ format_desc = util_format_description(format);
+ if (!format_desc)
+ return FALSE;
+
+ if (util_format_is_intensity(format))
+ return FALSE;
+
+ if (sample_count > 1) {
+ if (!vscreen->caps.caps.v1.bset.texture_multisample)
+ return FALSE;
+ if (sample_count > vscreen->caps.caps.v1.max_samples)
+ return FALSE;
+ }
+
+ if (bind & PIPE_BIND_VERTEX_BUFFER) {
+ return virgl_is_vertex_format_supported(screen, format);
+ }
+
+ 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;
+
+ {
+ int big = format / 32;
+ int small = format % 32;
+ if (!(vscreen->caps.caps.v1.render.bitmask[big] & (1 << small)))
+ return FALSE;
+ }
+ }
+
+ if (bind & PIPE_BIND_DEPTH_STENCIL) {
+ if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
+ return FALSE;
+ }
+
+ /*
+ * All other operations (sampling, transfer, etc).
+ */
+
+ if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
+ if (util_format_s3tc_enabled)
+ goto out_lookup;
+ return FALSE;
+ }
+ if (format_desc->layout == UTIL_FORMAT_LAYOUT_RGTC) {
+ goto out_lookup;
+ }
+
+ if (format == PIPE_FORMAT_R11G11B10_FLOAT) {
+ goto out_lookup;
+ } else if (format == PIPE_FORMAT_R9G9B9E5_FLOAT) {
+ goto out_lookup;
+ }
+
+ /* Find the first non-VOID channel. */
+ for (i = 0; i < 4; i++) {
+ if (format_desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {
+ break;
+ }
+ }
+
+ if (i == 4)
+ return FALSE;
+
+ /* no L4A4 */
+ if (format_desc->nr_channels < 4 && format_desc->channel[i].size == 4)
+ return FALSE;
+
+ out_lookup:
+ {
+ int big = format / 32;
+ int small = format % 32;
+ if (!(vscreen->caps.caps.v1.sampler.bitmask[big] & (1 << small)))
+ return FALSE;
+ }
+ /*
+ * Everything else should be supported by u_format.
+ */
+ return TRUE;
+}
+
+static void virgl_flush_frontbuffer(struct pipe_screen *screen,
+ struct pipe_resource *res,
+ unsigned level, unsigned layer,
+ void *winsys_drawable_handle, struct pipe_box *sub_box)
+{
+ struct virgl_screen *vscreen = virgl_screen(screen);
+ struct virgl_winsys *vws = vscreen->vws;
+ struct virgl_resource *vres = (struct virgl_resource *)res;
+
+ if (vws->flush_frontbuffer)
+ vws->flush_frontbuffer(vws, vres->hw_res, level, layer, winsys_drawable_handle,
+ sub_box);
+}
+
+static void virgl_fence_reference(struct pipe_screen *screen,
+ struct pipe_fence_handle **ptr,
+ struct pipe_fence_handle *fence)
+{
+ struct virgl_screen *vscreen = virgl_screen(screen);
+ struct virgl_winsys *vws = vscreen->vws;
+
+ vws->fence_reference(vws, ptr, fence);
+}
+
+static boolean virgl_fence_finish(struct pipe_screen *screen,
+ struct pipe_fence_handle *fence,
+ uint64_t timeout)
+{
+ struct virgl_screen *vscreen = virgl_screen(screen);
+ struct virgl_winsys *vws = vscreen->vws;
+
+ return vws->fence_wait(vws, fence, timeout);
+}
+
+static uint64_t
+virgl_get_timestamp(struct pipe_screen *_screen)
+{
+ return os_time_get_nano();
+}
+
+static void
+virgl_destroy_screen(struct pipe_screen *screen)
+{
+ struct virgl_screen *vscreen = virgl_screen(screen);
+ struct virgl_winsys *vws = vscreen->vws;
+
+ if (vws)
+ vws->destroy(vws);
+ FREE(vscreen);
+}
+
+struct pipe_screen *
+virgl_create_screen(struct virgl_winsys *vws)
+{
+ struct virgl_screen *screen = CALLOC_STRUCT(virgl_screen);
+
+ if (!screen)
+ return NULL;
+
+ screen->vws = vws;
+ screen->winsys = NULL;
+ screen->base.get_name = virgl_get_name;
+ screen->base.get_vendor = virgl_get_vendor;
+ screen->base.get_param = virgl_get_param;
+ screen->base.get_shader_param = virgl_get_shader_param;
+ screen->base.get_paramf = virgl_get_paramf;
+ screen->base.is_format_supported = virgl_is_format_supported;
+ screen->base.destroy = virgl_destroy_screen;
+ screen->base.context_create = virgl_context_create;
+ screen->base.flush_frontbuffer = virgl_flush_frontbuffer;
+ screen->base.get_timestamp = virgl_get_timestamp;
+ screen->base.fence_reference = virgl_fence_reference;
+ //screen->base.fence_signalled = virgl_fence_signalled;
+ screen->base.fence_finish = virgl_fence_finish;
+
+ virgl_init_screen_resource_functions(&screen->base);
+
+ vws->get_caps(vws, &screen->caps);
+
+
+ util_format_s3tc_init();
+ return &screen->base;
+}