Import Mesa 21.1.5

1 files changed, 624 insertions, 0 deletions

diff --git a/lib/mesa/src/gallium/frontends/dri/dri_screen.c b/lib/mesa/src/gallium/frontends/dri/dri_screen.c
new file mode 100644
index 000000000..d19feaa4c
--- /dev/null
+++ b/lib/mesa/src/gallium/frontends/dri/dri_screen.c
@@ -0,0 +1,624 @@
+/**************************************************************************
+ *
+ * Copyright 2009, 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.
+ *
+ **************************************************************************/
+/*
+ * Author: Keith Whitwell <keithw@vmware.com>
+ * Author: Jakob Bornecrantz <wallbraker@gmail.com>
+ */
+
+#include "utils.h"
+
+#include "dri_screen.h"
+#include "dri_context.h"
+#include "dri_helpers.h"
+
+#include "util/u_inlines.h"
+#include "pipe/p_screen.h"
+#include "pipe/p_format.h"
+#include "pipe-loader/pipe_loader.h"
+#include "state_tracker/st_gl_api.h" /* for st_gl_api_create */
+#include "frontend/drm_driver.h"
+
+#include "util/u_debug.h"
+#include "util/format/u_format_s3tc.h"
+
+#define MSAA_VISUAL_MAX_SAMPLES 32
+
+#undef false
+
+const __DRIconfigOptionsExtension gallium_config_options = {
+   .base = { __DRI_CONFIG_OPTIONS, 2 },
+   .getXml = pipe_loader_get_driinfo_xml
+};
+
+#define false 0
+
+static void
+dri_fill_st_options(struct dri_screen *screen)
+{
+   struct st_config_options *options = &screen->options;
+   const struct driOptionCache *optionCache = &screen->dev->option_cache;
+
+   options->disable_blend_func_extended =
+      driQueryOptionb(optionCache, "disable_blend_func_extended");
+   options->disable_arb_gpu_shader5 =
+      driQueryOptionb(optionCache, "disable_arb_gpu_shader5");
+   options->disable_glsl_line_continuations =
+      driQueryOptionb(optionCache, "disable_glsl_line_continuations");
+   options->force_glsl_extensions_warn =
+      driQueryOptionb(optionCache, "force_glsl_extensions_warn");
+   options->force_glsl_version =
+      driQueryOptioni(optionCache, "force_glsl_version");
+   options->allow_extra_pp_tokens =
+      driQueryOptionb(optionCache, "allow_extra_pp_tokens");
+   options->allow_glsl_extension_directive_midshader =
+      driQueryOptionb(optionCache, "allow_glsl_extension_directive_midshader");
+   options->allow_glsl_120_subset_in_110 =
+      driQueryOptionb(optionCache, "allow_glsl_120_subset_in_110");
+   options->allow_glsl_builtin_const_expression =
+      driQueryOptionb(optionCache, "allow_glsl_builtin_const_expression");
+   options->allow_glsl_relaxed_es =
+      driQueryOptionb(optionCache, "allow_glsl_relaxed_es");
+   options->allow_glsl_builtin_variable_redeclaration =
+      driQueryOptionb(optionCache, "allow_glsl_builtin_variable_redeclaration");
+   options->allow_higher_compat_version =
+      driQueryOptionb(optionCache, "allow_higher_compat_version");
+   options->glsl_ignore_write_to_readonly_var =
+      driQueryOptionb(optionCache, "glsl_ignore_write_to_readonly_var");
+   options->glsl_zero_init = driQueryOptionb(optionCache, "glsl_zero_init");
+   options->force_integer_tex_nearest =
+      driQueryOptionb(optionCache, "force_integer_tex_nearest");
+   options->vs_position_always_invariant =
+      driQueryOptionb(optionCache, "vs_position_always_invariant");
+   options->force_glsl_abs_sqrt =
+      driQueryOptionb(optionCache, "force_glsl_abs_sqrt");
+   options->allow_glsl_cross_stage_interpolation_mismatch =
+      driQueryOptionb(optionCache, "allow_glsl_cross_stage_interpolation_mismatch");
+   options->allow_draw_out_of_order =
+      driQueryOptionb(optionCache, "allow_draw_out_of_order");
+   options->allow_incorrect_primitive_id =
+      driQueryOptionb(optionCache, "allow_incorrect_primitive_id");
+   options->ignore_map_unsynchronized =
+      driQueryOptionb(optionCache, "ignore_map_unsynchronized");
+   options->force_gl_names_reuse =
+      driQueryOptionb(optionCache, "force_gl_names_reuse");
+   options->transcode_etc =
+      driQueryOptionb(optionCache, "transcode_etc");
+
+   char *vendor_str = driQueryOptionstr(optionCache, "force_gl_vendor");
+   /* not an empty string */
+   if (*vendor_str)
+      options->force_gl_vendor = strdup(vendor_str);
+
+   driComputeOptionsSha1(optionCache, options->config_options_sha1);
+}
+
+static unsigned
+dri_loader_get_cap(struct dri_screen *screen, enum dri_loader_cap cap)
+{
+   const __DRIdri2LoaderExtension *dri2_loader = screen->sPriv->dri2.loader;
+   const __DRIimageLoaderExtension *image_loader = screen->sPriv->image.loader;
+
+   if (dri2_loader && dri2_loader->base.version >= 4 &&
+       dri2_loader->getCapability)
+      return dri2_loader->getCapability(screen->sPriv->loaderPrivate, cap);
+
+   if (image_loader && image_loader->base.version >= 2 &&
+       image_loader->getCapability)
+      return image_loader->getCapability(screen->sPriv->loaderPrivate, cap);
+
+   return 0;
+}
+
+static const __DRIconfig **
+dri_fill_in_modes(struct dri_screen *screen)
+{
+   static const mesa_format mesa_formats[] = {
+      MESA_FORMAT_B10G10R10A2_UNORM,
+      MESA_FORMAT_B10G10R10X2_UNORM,
+      MESA_FORMAT_R10G10B10A2_UNORM,
+      MESA_FORMAT_R10G10B10X2_UNORM,
+      MESA_FORMAT_B8G8R8A8_UNORM,
+      MESA_FORMAT_B8G8R8X8_UNORM,
+      MESA_FORMAT_B8G8R8A8_SRGB,
+      MESA_FORMAT_B8G8R8X8_SRGB,
+      MESA_FORMAT_B5G6R5_UNORM,
+      MESA_FORMAT_RGBA_FLOAT16,
+      MESA_FORMAT_RGBX_FLOAT16,
+
+      /* The 32-bit RGBA format must not precede the 32-bit BGRA format.
+       * Likewise for RGBX and BGRX.  Otherwise, the GLX client and the GLX
+       * server may disagree on which format the GLXFBConfig represents,
+       * resulting in swapped color channels.
+       *
+       * The problem, as of 2017-05-30:
+       * When matching a GLXFBConfig to a __DRIconfig, GLX ignores the channel
+       * order and chooses the first __DRIconfig with the expected channel
+       * sizes. Specifically, GLX compares the GLXFBConfig's and __DRIconfig's
+       * __DRI_ATTRIB_{CHANNEL}_SIZE but ignores __DRI_ATTRIB_{CHANNEL}_MASK.
+       *
+       * EGL does not suffer from this problem. It correctly compares the
+       * channel masks when matching EGLConfig to __DRIconfig.
+       */
+
+      /* Required by Android, for HAL_PIXEL_FORMAT_RGBA_8888. */
+      MESA_FORMAT_R8G8B8A8_UNORM,
+
+      /* Required by Android, for HAL_PIXEL_FORMAT_RGBX_8888. */
+      MESA_FORMAT_R8G8B8X8_UNORM,
+
+      /* Required by Android, for HAL_PIXEL_FORMAT_RGBA_8888. */
+      MESA_FORMAT_R8G8B8A8_SRGB,
+
+      /* Required by Android, for HAL_PIXEL_FORMAT_RGBX_8888. */
+      MESA_FORMAT_R8G8B8X8_SRGB,
+   };
+   static const enum pipe_format pipe_formats[] = {
+      PIPE_FORMAT_B10G10R10A2_UNORM,
+      PIPE_FORMAT_B10G10R10X2_UNORM,
+      PIPE_FORMAT_R10G10B10A2_UNORM,
+      PIPE_FORMAT_R10G10B10X2_UNORM,
+      PIPE_FORMAT_BGRA8888_UNORM,
+      PIPE_FORMAT_BGRX8888_UNORM,
+      PIPE_FORMAT_BGRA8888_SRGB,
+      PIPE_FORMAT_BGRX8888_SRGB,
+      PIPE_FORMAT_B5G6R5_UNORM,
+      PIPE_FORMAT_R16G16B16A16_FLOAT,
+      PIPE_FORMAT_R16G16B16X16_FLOAT,
+      PIPE_FORMAT_RGBA8888_UNORM,
+      PIPE_FORMAT_RGBX8888_UNORM,
+      PIPE_FORMAT_RGBA8888_SRGB,
+      PIPE_FORMAT_RGBX8888_SRGB,
+   };
+   mesa_format format;
+   __DRIconfig **configs = NULL;
+   uint8_t depth_bits_array[5];
+   uint8_t stencil_bits_array[5];
+   unsigned depth_buffer_factor;
+   unsigned msaa_samples_max;
+   unsigned i;
+   struct pipe_screen *p_screen = screen->base.screen;
+   bool pf_z16, pf_x8z24, pf_z24x8, pf_s8z24, pf_z24s8, pf_z32;
+   bool mixed_color_depth;
+   bool allow_rgba_ordering;
+   bool allow_rgb10;
+   bool allow_fp16;
+
+   static const GLenum back_buffer_modes[] = {
+      __DRI_ATTRIB_SWAP_NONE, __DRI_ATTRIB_SWAP_UNDEFINED,
+      __DRI_ATTRIB_SWAP_COPY
+   };
+
+   if (driQueryOptionb(&screen->dev->option_cache, "always_have_depth_buffer")) {
+      /* all visuals will have a depth buffer */
+      depth_buffer_factor = 0;
+   }
+   else {
+      depth_bits_array[0] = 0;
+      stencil_bits_array[0] = 0;
+      depth_buffer_factor = 1;
+   }
+
+   allow_rgba_ordering = dri_loader_get_cap(screen, DRI_LOADER_CAP_RGBA_ORDERING);
+   allow_rgb10 = driQueryOptionb(&screen->dev->option_cache, "allow_rgb10_configs");
+   allow_fp16 = driQueryOptionb(&screen->dev->option_cache, "allow_fp16_configs");
+   allow_fp16 &= dri_loader_get_cap(screen, DRI_LOADER_CAP_FP16);
+
+   msaa_samples_max = (screen->st_api->feature_mask & ST_API_FEATURE_MS_VISUALS_MASK)
+      ? MSAA_VISUAL_MAX_SAMPLES : 1;
+
+   pf_x8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24X8_UNORM,
+					    PIPE_TEXTURE_2D, 0, 0,
+                                            PIPE_BIND_DEPTH_STENCIL);
+   pf_z24x8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_X8Z24_UNORM,
+					    PIPE_TEXTURE_2D, 0, 0,
+                                            PIPE_BIND_DEPTH_STENCIL);
+   pf_s8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24_UNORM_S8_UINT,
+					    PIPE_TEXTURE_2D, 0, 0,
+                                            PIPE_BIND_DEPTH_STENCIL);
+   pf_z24s8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_S8_UINT_Z24_UNORM,
+					    PIPE_TEXTURE_2D, 0, 0,
+                                            PIPE_BIND_DEPTH_STENCIL);
+   pf_z16 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z16_UNORM,
+                                          PIPE_TEXTURE_2D, 0, 0,
+                                          PIPE_BIND_DEPTH_STENCIL);
+   pf_z32 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z32_UNORM,
+                                          PIPE_TEXTURE_2D, 0, 0,
+                                          PIPE_BIND_DEPTH_STENCIL);
+
+   if (pf_z16) {
+      depth_bits_array[depth_buffer_factor] = 16;
+      stencil_bits_array[depth_buffer_factor++] = 0;
+   }
+   if (pf_x8z24 || pf_z24x8) {
+      depth_bits_array[depth_buffer_factor] = 24;
+      stencil_bits_array[depth_buffer_factor++] = 0;
+      screen->d_depth_bits_last = pf_x8z24;
+   }
+   if (pf_s8z24 || pf_z24s8) {
+      depth_bits_array[depth_buffer_factor] = 24;
+      stencil_bits_array[depth_buffer_factor++] = 8;
+      screen->sd_depth_bits_last = pf_s8z24;
+   }
+   if (pf_z32) {
+      depth_bits_array[depth_buffer_factor] = 32;
+      stencil_bits_array[depth_buffer_factor++] = 0;
+   }
+
+   mixed_color_depth =
+      p_screen->get_param(p_screen, PIPE_CAP_MIXED_COLOR_DEPTH_BITS);
+
+   assert(ARRAY_SIZE(mesa_formats) == ARRAY_SIZE(pipe_formats));
+
+   /* Add configs. */
+   for (format = 0; format < ARRAY_SIZE(mesa_formats); format++) {
+      __DRIconfig **new_configs = NULL;
+      unsigned num_msaa_modes = 0; /* includes a single-sample mode */
+      uint8_t msaa_modes[MSAA_VISUAL_MAX_SAMPLES];
+
+      /* Expose only BGRA ordering if the loader doesn't support RGBA ordering. */
+      if (!allow_rgba_ordering &&
+          (mesa_formats[format] == MESA_FORMAT_R8G8B8A8_UNORM ||
+           mesa_formats[format] == MESA_FORMAT_R8G8B8X8_UNORM ||
+           mesa_formats[format] == MESA_FORMAT_R8G8B8A8_SRGB  ||
+           mesa_formats[format] == MESA_FORMAT_R8G8B8X8_SRGB))
+         continue;
+
+      if (!allow_rgb10 &&
+          (mesa_formats[format] == MESA_FORMAT_B10G10R10A2_UNORM ||
+           mesa_formats[format] == MESA_FORMAT_B10G10R10X2_UNORM ||
+           mesa_formats[format] == MESA_FORMAT_R10G10B10A2_UNORM ||
+           mesa_formats[format] == MESA_FORMAT_R10G10B10X2_UNORM))
+         continue;
+
+      if (!allow_fp16 &&
+          (mesa_formats[format] == MESA_FORMAT_RGBA_FLOAT16 ||
+           mesa_formats[format] == MESA_FORMAT_RGBX_FLOAT16))
+         continue;
+
+      if (!p_screen->is_format_supported(p_screen, pipe_formats[format],
+                                         PIPE_TEXTURE_2D, 0, 0,
+                                         PIPE_BIND_RENDER_TARGET |
+                                         PIPE_BIND_DISPLAY_TARGET))
+         continue;
+
+      for (i = 1; i <= msaa_samples_max; i++) {
+         int samples = i > 1 ? i : 0;
+
+         if (p_screen->is_format_supported(p_screen, pipe_formats[format],
+                                           PIPE_TEXTURE_2D, samples, samples,
+                                           PIPE_BIND_RENDER_TARGET)) {
+            msaa_modes[num_msaa_modes++] = samples;
+         }
+      }
+
+      if (num_msaa_modes) {
+         /* Single-sample configs with an accumulation buffer. */
+         new_configs = driCreateConfigs(mesa_formats[format],
+                                        depth_bits_array, stencil_bits_array,
+                                        depth_buffer_factor, back_buffer_modes,
+                                        ARRAY_SIZE(back_buffer_modes),
+                                        msaa_modes, 1,
+                                        GL_TRUE, !mixed_color_depth);
+         configs = driConcatConfigs(configs, new_configs);
+
+         /* Multi-sample configs without an accumulation buffer. */
+         if (num_msaa_modes > 1) {
+            new_configs = driCreateConfigs(mesa_formats[format],
+                                           depth_bits_array, stencil_bits_array,
+                                           depth_buffer_factor, back_buffer_modes,
+                                           ARRAY_SIZE(back_buffer_modes),
+                                           msaa_modes+1, num_msaa_modes-1,
+                                           GL_FALSE, !mixed_color_depth);
+            configs = driConcatConfigs(configs, new_configs);
+         }
+      }
+   }
+
+   if (configs == NULL) {
+      debug_printf("%s: driCreateConfigs failed\n", __FUNCTION__);
+      return NULL;
+   }
+
+   return (const __DRIconfig **)configs;
+}
+
+/**
+ * Roughly the converse of dri_fill_in_modes.
+ */
+void
+dri_fill_st_visual(struct st_visual *stvis,
+                   const struct dri_screen *screen,
+                   const struct gl_config *mode)
+{
+   memset(stvis, 0, sizeof(*stvis));
+
+   if (!mode)
+      return;
+
+   /* Deduce the color format. */
+   switch (mode->redMask) {
+   case 0:
+      /* Formats > 32 bpp */
+      assert(mode->floatMode);
+      if (mode->alphaShift > -1) {
+         assert(mode->alphaShift == 48);
+         stvis->color_format = PIPE_FORMAT_R16G16B16A16_FLOAT;
+      } else {
+         stvis->color_format = PIPE_FORMAT_R16G16B16X16_FLOAT;
+      }
+      break;
+
+   case 0x3FF00000:
+      if (mode->alphaMask) {
+         assert(mode->alphaMask == 0xC0000000);
+         stvis->color_format = PIPE_FORMAT_B10G10R10A2_UNORM;
+      } else {
+         stvis->color_format = PIPE_FORMAT_B10G10R10X2_UNORM;
+      }
+      break;
+
+   case 0x000003FF:
+      if (mode->alphaMask) {
+         assert(mode->alphaMask == 0xC0000000);
+         stvis->color_format = PIPE_FORMAT_R10G10B10A2_UNORM;
+      } else {
+         stvis->color_format = PIPE_FORMAT_R10G10B10X2_UNORM;
+      }
+      break;
+
+   case 0x00FF0000:
+      if (mode->alphaMask) {
+         assert(mode->alphaMask == 0xFF000000);
+         stvis->color_format = mode->sRGBCapable ?
+                                  PIPE_FORMAT_BGRA8888_SRGB :
+                                  PIPE_FORMAT_BGRA8888_UNORM;
+      } else {
+         stvis->color_format = mode->sRGBCapable ?
+                                  PIPE_FORMAT_BGRX8888_SRGB :
+                                  PIPE_FORMAT_BGRX8888_UNORM;
+      }
+      break;
+
+   case 0x000000FF:
+      if (mode->alphaMask) {
+         assert(mode->alphaMask == 0xFF000000);
+         stvis->color_format = mode->sRGBCapable ?
+                                  PIPE_FORMAT_RGBA8888_SRGB :
+                                  PIPE_FORMAT_RGBA8888_UNORM;
+      } else {
+         stvis->color_format = mode->sRGBCapable ?
+                                  PIPE_FORMAT_RGBX8888_SRGB :
+                                  PIPE_FORMAT_RGBX8888_UNORM;
+      }
+      break;
+
+   case 0x0000F800:
+      stvis->color_format = PIPE_FORMAT_B5G6R5_UNORM;
+      break;
+
+   default:
+      assert(!"unsupported visual: invalid red mask");
+      return;
+   }
+
+   if (mode->samples > 0) {
+      stvis->samples = mode->samples;
+   }
+
+   switch (mode->depthBits) {
+   default:
+   case 0:
+      stvis->depth_stencil_format = PIPE_FORMAT_NONE;
+      break;
+   case 16:
+      stvis->depth_stencil_format = PIPE_FORMAT_Z16_UNORM;
+      break;
+   case 24:
+      if (mode->stencilBits == 0) {
+	 stvis->depth_stencil_format = (screen->d_depth_bits_last) ?
+                                          PIPE_FORMAT_Z24X8_UNORM:
+                                          PIPE_FORMAT_X8Z24_UNORM;
+      } else {
+	 stvis->depth_stencil_format = (screen->sd_depth_bits_last) ?
+                                          PIPE_FORMAT_Z24_UNORM_S8_UINT:
+                                          PIPE_FORMAT_S8_UINT_Z24_UNORM;
+      }
+      break;
+   case 32:
+      stvis->depth_stencil_format = PIPE_FORMAT_Z32_UNORM;
+      break;
+   }
+
+   stvis->accum_format = (mode->accumRedBits > 0) ?
+      PIPE_FORMAT_R16G16B16A16_SNORM : PIPE_FORMAT_NONE;
+
+   stvis->buffer_mask |= ST_ATTACHMENT_FRONT_LEFT_MASK;
+   stvis->render_buffer = ST_ATTACHMENT_FRONT_LEFT;
+   if (mode->doubleBufferMode) {
+      stvis->buffer_mask |= ST_ATTACHMENT_BACK_LEFT_MASK;
+      stvis->render_buffer = ST_ATTACHMENT_BACK_LEFT;
+   }
+   if (mode->stereoMode) {
+      stvis->buffer_mask |= ST_ATTACHMENT_FRONT_RIGHT_MASK;
+      if (mode->doubleBufferMode)
+         stvis->buffer_mask |= ST_ATTACHMENT_BACK_RIGHT_MASK;
+   }
+
+   if (mode->depthBits > 0 || mode->stencilBits > 0)
+      stvis->buffer_mask |= ST_ATTACHMENT_DEPTH_STENCIL_MASK;
+   /* let the gallium frontend allocate the accum buffer */
+}
+
+static bool
+dri_get_egl_image(struct st_manager *smapi,
+                  void *egl_image,
+                  struct st_egl_image *stimg)
+{
+   struct dri_screen *screen = (struct dri_screen *)smapi;
+   __DRIimage *img = NULL;
+   const struct dri2_format_mapping *map;
+
+   if (screen->lookup_egl_image) {
+      img = screen->lookup_egl_image(screen, egl_image);
+   }
+
+   if (!img)
+      return FALSE;
+
+   stimg->texture = NULL;
+   pipe_resource_reference(&stimg->texture, img->texture);
+   map = dri2_get_mapping_by_fourcc(img->dri_fourcc);
+   stimg->format = map ? map->pipe_format : img->texture->format;
+   stimg->level = img->level;
+   stimg->layer = img->layer;
+
+   if (img->imported_dmabuf && map) {
+      /* Guess sized internal format for dma-bufs. Could be used
+       * by EXT_EGL_image_storage.
+       */
+      mesa_format mesa_format = driImageFormatToGLFormat(map->dri_format);
+      stimg->internalformat = driGLFormatToSizedInternalGLFormat(mesa_format);
+   }
+
+   return TRUE;
+}
+
+static int
+dri_get_param(struct st_manager *smapi,
+              enum st_manager_param param)
+{
+   struct dri_screen *screen = (struct dri_screen *)smapi;
+
+   switch(param) {
+   case ST_MANAGER_BROKEN_INVALIDATE:
+      return screen->broken_invalidate;
+   default:
+      return 0;
+   }
+}
+
+void
+dri_destroy_screen_helper(struct dri_screen * screen)
+{
+   if (screen->base.destroy)
+      screen->base.destroy(&screen->base);
+
+   if (screen->st_api && screen->st_api->destroy)
+      screen->st_api->destroy(screen->st_api);
+
+   if (screen->base.screen)
+      screen->base.screen->destroy(screen->base.screen);
+
+   mtx_destroy(&screen->opencl_func_mutex);
+}
+
+void
+dri_destroy_screen(__DRIscreen * sPriv)
+{
+   struct dri_screen *screen = dri_screen(sPriv);
+
+   dri_destroy_screen_helper(screen);
+
+   pipe_loader_release(&screen->dev, 1);
+
+   free(screen->options.force_gl_vendor);
+
+   /* The caller in dri_util preserves the fd ownership */
+   free(screen);
+   sPriv->driverPrivate = NULL;
+   sPriv->extensions = NULL;
+}
+
+static void
+dri_postprocessing_init(struct dri_screen *screen)
+{
+   unsigned i;
+
+   for (i = 0; i < PP_FILTERS; i++) {
+      screen->pp_enabled[i] = driQueryOptioni(&screen->dev->option_cache,
+                                              pp_filters[i].name);
+   }
+}
+
+static void
+dri_set_background_context(struct st_context_iface *st,
+                           struct util_queue_monitoring *queue_info)
+{
+   struct dri_context *ctx = (struct dri_context *)st->st_manager_private;
+   const __DRIbackgroundCallableExtension *backgroundCallable =
+      ctx->sPriv->dri2.backgroundCallable;
+
+   /* Note: Mesa will only call this function if GL multithreading is enabled
+    * We only do that if the loader exposed the __DRI_BACKGROUND_CALLABLE
+    * extension. So we know that backgroundCallable is not NULL.
+    */
+   assert(backgroundCallable);
+   backgroundCallable->setBackgroundContext(ctx->cPriv->loaderPrivate);
+
+   if (ctx->hud)
+      hud_add_queue_for_monitoring(ctx->hud, queue_info);
+}
+
+void
+dri_init_options(struct dri_screen *screen)
+{
+   pipe_loader_load_options(screen->dev);
+
+   dri_fill_st_options(screen);
+}
+
+const __DRIconfig **
+dri_init_screen_helper(struct dri_screen *screen,
+                       struct pipe_screen *pscreen)
+{
+   screen->base.screen = pscreen;
+   screen->base.get_egl_image = dri_get_egl_image;
+   screen->base.get_param = dri_get_param;
+   screen->base.set_background_context = dri_set_background_context;
+
+   screen->st_api = st_gl_api_create();
+   if (!screen->st_api)
+      return NULL;
+
+   if(pscreen->get_param(pscreen, PIPE_CAP_NPOT_TEXTURES))
+      screen->target = PIPE_TEXTURE_2D;
+   else
+      screen->target = PIPE_TEXTURE_RECT;
+
+   dri_postprocessing_init(screen);
+
+   screen->st_api->query_versions(screen->st_api, &screen->base,
+                                  &screen->options,
+                                  &screen->sPriv->max_gl_core_version,
+                                  &screen->sPriv->max_gl_compat_version,
+                                  &screen->sPriv->max_gl_es1_version,
+                                  &screen->sPriv->max_gl_es2_version);
+
+   return dri_fill_in_modes(screen);
+}
+
+/* vim: set sw=3 ts=8 sts=3 expandtab: */