st/dri: merge dri/drm and dri/sw backends

Move the driver_name to dri2/drisw and remove all the SPLIT_TAGETS
mayhem. In the next step we'll unify the dri and dri-swrast targets,
completing the gallium DRI megadriver.

v2: Remove leftover st/dri Makefiles from CONFIG_FILES. Spotted by
Thomas Helland.

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Tested-by: Rob Clark <robclark@freedesktop.org>
Tested-by: Thomas Helland <thomashelland90 at gmail.com>
Acked-by: Tom Stellard <thomas.stellard@amd.com>

1 files changed, 473 insertions, 0 deletions

diff --git a/src/gallium/state_trackers/dri/dri_screen.c b/src/gallium/state_trackers/dri/dri_screen.c
new file mode 100644
index 0000000..650dcb7
--- /dev/null
+++ b/src/gallium/state_trackers/dri/dri_screen.c
@@ -0,0 +1,473 @@
+/**************************************************************************
+ *
+ * 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 "xmlpool.h"
+
+#include "dri_screen.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 "state_tracker/drm_driver.h"
+
+#include "util/u_debug.h"
+#include "util/u_format_s3tc.h"
+
+#define MSAA_VISUAL_MAX_SAMPLES 32
+
+#undef false
+
+const __DRIconfigOptionsExtension gallium_config_options = {
+   .base = { __DRI_CONFIG_OPTIONS, 1 },
+   .xml =
+
+   DRI_CONF_BEGIN
+      DRI_CONF_SECTION_QUALITY
+         DRI_CONF_FORCE_S3TC_ENABLE("false")
+         DRI_CONF_PP_CELSHADE(0)
+         DRI_CONF_PP_NORED(0)
+         DRI_CONF_PP_NOGREEN(0)
+         DRI_CONF_PP_NOBLUE(0)
+         DRI_CONF_PP_JIMENEZMLAA(0, 0, 32)
+         DRI_CONF_PP_JIMENEZMLAA_COLOR(0, 0, 32)
+      DRI_CONF_SECTION_END
+
+      DRI_CONF_SECTION_DEBUG
+         DRI_CONF_FORCE_GLSL_EXTENSIONS_WARN("false")
+         DRI_CONF_DISABLE_GLSL_LINE_CONTINUATIONS("false")
+         DRI_CONF_DISABLE_BLEND_FUNC_EXTENDED("false")
+         DRI_CONF_DISABLE_SHADER_BIT_ENCODING("false")
+         DRI_CONF_FORCE_GLSL_VERSION(0)
+      DRI_CONF_SECTION_END
+
+      DRI_CONF_SECTION_MISCELLANEOUS
+         DRI_CONF_ALWAYS_HAVE_DEPTH_BUFFER("false")
+      DRI_CONF_SECTION_END
+   DRI_CONF_END
+};
+
+#define false 0
+
+static const __DRIconfig **
+dri_fill_in_modes(struct dri_screen *screen)
+{
+   static const mesa_format mesa_formats[3] = {
+      MESA_FORMAT_B8G8R8A8_UNORM,
+      MESA_FORMAT_B8G8R8X8_UNORM,
+      MESA_FORMAT_B5G6R5_UNORM,
+   };
+   static const enum pipe_format pipe_formats[3] = {
+      PIPE_FORMAT_BGRA8888_UNORM,
+      PIPE_FORMAT_BGRX8888_UNORM,
+      PIPE_FORMAT_B5G6R5_UNORM,
+   };
+   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;
+   boolean pf_z16, pf_x8z24, pf_z24x8, pf_s8z24, pf_z24s8, pf_z32;
+
+   static const GLenum back_buffer_modes[] = {
+      GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
+   };
+
+   if (driQueryOptionb(&screen->optionCache, "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;
+   }
+ 
+   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,
+                                            PIPE_BIND_DEPTH_STENCIL);
+   pf_z24x8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_X8Z24_UNORM,
+					    PIPE_TEXTURE_2D, 0,
+                                            PIPE_BIND_DEPTH_STENCIL);
+   pf_s8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24_UNORM_S8_UINT,
+					    PIPE_TEXTURE_2D, 0,
+                                            PIPE_BIND_DEPTH_STENCIL);
+   pf_z24s8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_S8_UINT_Z24_UNORM,
+					    PIPE_TEXTURE_2D, 0,
+                                            PIPE_BIND_DEPTH_STENCIL);
+   pf_z16 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z16_UNORM,
+                                          PIPE_TEXTURE_2D, 0,
+                                          PIPE_BIND_DEPTH_STENCIL);
+   pf_z32 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z32_UNORM,
+                                          PIPE_TEXTURE_2D, 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;
+   }
+
+   assert(Elements(mesa_formats) == Elements(pipe_formats));
+
+   /* Add configs. */
+   for (format = 0; format < Elements(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];
+
+      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,
+                                           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,
+                                        Elements(back_buffer_modes),
+                                        msaa_modes, 1,
+                                        GL_TRUE);
+         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,
+                                           Elements(back_buffer_modes),
+                                           msaa_modes+1, num_msaa_modes-1,
+                                           GL_FALSE);
+            configs = driConcatConfigs(configs, new_configs);
+         }
+      }
+   }
+
+   if (configs == NULL) {
+      debug_printf("%s: driCreateConfigs failed\n", __FUNCTION__);
+      return NULL;
+   }
+
+   return (const __DRIconfig **)configs;
+}
+
+/* The Gallium way to force MSAA. */
+DEBUG_GET_ONCE_NUM_OPTION(msaa, "GALLIUM_MSAA", 0);
+
+/* The NVIDIA way to force MSAA. The same variable is used by the NVIDIA
+ * driver. */
+DEBUG_GET_ONCE_NUM_OPTION(msaa_nv, "__GL_FSAA_MODE", 0);
+
+static void
+dri_force_msaa_visual(struct st_visual *stvis,
+                      struct pipe_screen *screen)
+{
+   int i;
+   int samples = debug_get_option_msaa();
+
+   if (!samples)
+      samples = debug_get_option_msaa_nv();
+
+   if (samples <= 1)
+      return; /* nothing to do */
+
+   /* Choose a supported sample count greater than or equal to samples. */
+   for (i = samples; i <= MSAA_VISUAL_MAX_SAMPLES; i++) {
+      if (screen->is_format_supported(screen, stvis->color_format,
+                                      PIPE_TEXTURE_2D, i,
+                                      PIPE_BIND_RENDER_TARGET)) {
+         stvis->samples = i;
+         break;
+      }
+   }
+}
+
+/**
+ * Roughly the converse of dri_fill_in_modes.
+ */
+void
+dri_fill_st_visual(struct st_visual *stvis, struct dri_screen *screen,
+                   const struct gl_config *mode)
+{
+   memset(stvis, 0, sizeof(*stvis));
+
+   if (!mode)
+      return;
+
+   if (mode->redBits == 8) {
+      if (mode->alphaBits == 8)
+         stvis->color_format = PIPE_FORMAT_BGRA8888_UNORM;
+      else
+         stvis->color_format = PIPE_FORMAT_BGRX8888_UNORM;
+   } else {
+      stvis->color_format = PIPE_FORMAT_B5G6R5_UNORM;
+   }
+
+   if (mode->sampleBuffers) {
+      stvis->samples = mode->samples;
+   }
+   else {
+      /* This must be done after stvis->color_format is set. */
+      dri_force_msaa_visual(stvis, screen->base.screen);
+   }
+
+   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->haveAccumBuffer) ?
+      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->haveDepthBuffer || mode->haveStencilBuffer)
+      stvis->buffer_mask |= ST_ATTACHMENT_DEPTH_STENCIL_MASK;
+   /* let the state tracker allocate the accum buffer */
+}
+
+static boolean
+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;
+
+   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);
+   stimg->level = img->level;
+   stimg->layer = img->layer;
+
+   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;
+   }
+}
+
+static void
+dri_destroy_option_cache(struct dri_screen * screen)
+{
+   int i;
+
+   if (screen->optionCache.info) {
+      for (i = 0; i < (1 << screen->optionCache.tableSize); ++i) {
+         free(screen->optionCache.info[i].name);
+         free(screen->optionCache.info[i].ranges);
+      }
+      free(screen->optionCache.info);
+   }
+
+   free(screen->optionCache.values);
+
+   /* Default values are copied to screen->optionCache->values in
+    * initOptionCache. The info field, however, is a pointer copy, so don't free
+    * that twice.
+    */
+   free(screen->optionCacheDefaults.values);
+}
+
+void
+dri_destroy_screen_helper(struct dri_screen * screen)
+{
+   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);
+
+   dri_destroy_option_cache(screen);
+}
+
+void
+dri_destroy_screen(__DRIscreen * sPriv)
+{
+   struct dri_screen *screen = dri_screen(sPriv);
+
+   dri_destroy_screen_helper(screen);
+
+#if !GALLIUM_STATIC_TARGETS
+   pipe_loader_release(&screen->dev, 1);
+#endif // !GALLIUM_STATIC_TARGETS
+
+   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->optionCache,
+                                              pp_filters[i].name);
+   }
+}
+
+const __DRIconfig **
+dri_init_screen_helper(struct dri_screen *screen,
+                       struct pipe_screen *pscreen,
+                       const char* driver_name)
+{
+   screen->base.screen = pscreen;
+   if (!screen->base.screen) {
+      debug_printf("%s: failed to create pipe_screen\n", __FUNCTION__);
+      return NULL;
+   }
+
+   screen->base.get_egl_image = dri_get_egl_image;
+   screen->base.get_param = dri_get_param;
+
+   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;
+
+   driParseOptionInfo(&screen->optionCacheDefaults, gallium_config_options.xml);
+
+   driParseConfigFiles(&screen->optionCache,
+                       &screen->optionCacheDefaults,
+                       screen->sPriv->myNum,
+                       driver_name);
+
+   /* Handle force_s3tc_enable. */
+   if (!util_format_s3tc_enabled &&
+       driQueryOptionb(&screen->optionCache, "force_s3tc_enable")) {
+      /* Ensure libtxc_dxtn has been loaded if available.
+       * Forcing S3TC on before calling this would prevent loading
+       * the library.
+       * This is just a precaution, the driver should have called it
+       * already.
+       */
+      util_format_s3tc_init();
+
+      util_format_s3tc_enabled = TRUE;
+   }
+
+   dri_postprocessing_init(screen);
+
+   /* gallium drivers don't declare what version of GL they support, so we
+    * check the computed Mesa context version after context creation and fail
+    * out then.
+    */
+   if (screen->st_api->profile_mask & ST_PROFILE_DEFAULT_MASK)
+      screen->sPriv->max_gl_compat_version = 30;
+   if (screen->st_api->profile_mask & ST_PROFILE_OPENGL_CORE_MASK)
+      screen->sPriv->max_gl_core_version = 33;
+   if (screen->st_api->profile_mask & ST_PROFILE_OPENGL_ES1_MASK)
+      screen->sPriv->max_gl_es1_version = 11;
+   if (screen->st_api->profile_mask & ST_PROFILE_OPENGL_ES2_MASK)
+      screen->sPriv->max_gl_es2_version = 30;
+
+   return dri_fill_in_modes(screen);
+}
+
+/* vim: set sw=3 ts=8 sts=3 expandtab: */