st/dri: split out DRI2 code

1 files changed, 413 insertions, 0 deletions

diff --git a/src/gallium/state_trackers/dri/dri2.c b/src/gallium/state_trackers/dri/dri2.c
new file mode 100644
index 00000000000..2c6a0621ae7
--- /dev/null
+++ b/src/gallium/state_trackers/dri/dri2.c
@@ -0,0 +1,413 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.9
+ *
+ * Copyright 2009, VMware, Inc.
+ * All Rights Reserved.
+ * Copyright (C) 2010 LunarG Inc.
+ *
+ * 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, sublicense,
+ * 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 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL 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.
+ *
+ * Authors:
+ *    Keith Whitwell <[email protected]>
+ *    Jakob Bornecrantz <[email protected]>
+ *    Chia-I Wu <[email protected]>
+ */
+
+#include "util/u_memory.h"
+#include "util/u_inlines.h"
+#include "util/u_format.h"
+#include "util/u_debug.h"
+#include "state_tracker/drm_api.h"
+
+#include "dri_screen.h"
+#include "dri_context.h"
+#include "dri_drawable.h"
+#include "dri_st_api.h"
+#include "dri2.h"
+
+/**
+ * DRI2 flush extension.
+ */
+static void
+dri2_flush_drawable(__DRIdrawable *draw)
+{
+}
+
+static void
+dri2_invalidate_drawable(__DRIdrawable *dPriv)
+{
+   struct dri_drawable *drawable = dri_drawable(dPriv);
+   struct dri_context *ctx = dri_context(dPriv->driContextPriv);
+
+   dri2InvalidateDrawable(dPriv);
+   drawable->dPriv->lastStamp = *drawable->dPriv->pStamp;
+
+   if (ctx)
+      ctx->st->notify_invalid_framebuffer(ctx->st, drawable->stfb);
+}
+
+static const __DRI2flushExtension dri2FlushExtension = {
+    { __DRI2_FLUSH, __DRI2_FLUSH_VERSION },
+    dri2_flush_drawable,
+    dri2_invalidate_drawable,
+};
+
+/**
+ * These are used for GLX_EXT_texture_from_pixmap
+ */
+static void
+dri2_set_tex_buffer2(__DRIcontext *pDRICtx, GLint target,
+                     GLint format, __DRIdrawable *dPriv)
+{
+   struct dri_context *ctx = dri_context(pDRICtx);
+   struct dri_drawable *drawable = dri_drawable(dPriv);
+   struct pipe_texture *pt;
+
+   dri_st_framebuffer_validate_att(drawable->stfb, ST_ATTACHMENT_FRONT_LEFT);
+
+   pt = drawable->textures[ST_ATTACHMENT_FRONT_LEFT];
+
+   if (pt) {
+      ctx->st->teximage(ctx->st,
+            (target == GL_TEXTURE_2D) ? ST_TEXTURE_2D : ST_TEXTURE_RECT,
+            0, drawable->stvis.color_format, pt, FALSE);
+   }
+}
+
+static void
+dri2_set_tex_buffer(__DRIcontext *pDRICtx, GLint target,
+                    __DRIdrawable *dPriv)
+{
+   dri2_set_tex_buffer2(pDRICtx, target, __DRI_TEXTURE_FORMAT_RGBA, dPriv);
+}
+
+static const __DRItexBufferExtension dri2TexBufferExtension = {
+    { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
+   dri2_set_tex_buffer,
+   dri2_set_tex_buffer2,
+};
+
+/**
+ * Get the format of an attachment.
+ */
+static INLINE enum pipe_format
+dri_drawable_get_format(struct dri_drawable *drawable,
+                        enum st_attachment_type statt)
+{
+   enum pipe_format format;
+
+   switch (statt) {
+   case ST_ATTACHMENT_FRONT_LEFT:
+   case ST_ATTACHMENT_BACK_LEFT:
+   case ST_ATTACHMENT_FRONT_RIGHT:
+   case ST_ATTACHMENT_BACK_RIGHT:
+      format = drawable->stvis.color_format;
+      break;
+   case ST_ATTACHMENT_DEPTH_STENCIL:
+      format = drawable->stvis.depth_stencil_format;
+      break;
+   default:
+      format = PIPE_FORMAT_NONE;
+      break;
+   }
+
+   return format;
+}
+
+/**
+ * Retrieve __DRIbuffer from the DRI loader.
+ */
+static __DRIbuffer *
+dri_drawable_get_buffers(struct dri_drawable *drawable,
+                         const enum st_attachment_type *statts,
+                         unsigned *count)
+{
+   __DRIdrawable *dri_drawable = drawable->dPriv;
+   struct __DRIdri2LoaderExtensionRec *loader = drawable->sPriv->dri2.loader;
+   boolean with_format;
+   __DRIbuffer *buffers;
+   int num_buffers;
+   unsigned attachments[10];
+   unsigned num_attachments, i;
+
+   assert(loader);
+   with_format = dri_with_format(drawable->sPriv);
+
+   num_attachments = 0;
+
+   /* for Xserver 1.6.0 (DRI2 version 1) we always need to ask for the front */
+   if (!with_format)
+      attachments[num_attachments++] = __DRI_BUFFER_FRONT_LEFT;
+
+   for (i = 0; i < *count; i++) {
+      enum pipe_format format;
+      int att, bpp;
+
+      format = dri_drawable_get_format(drawable, statts[i]);
+      if (format == PIPE_FORMAT_NONE)
+         continue;
+
+      switch (statts[i]) {
+      case ST_ATTACHMENT_FRONT_LEFT:
+         /* already added */
+         if (!with_format)
+            continue;
+         att = __DRI_BUFFER_FRONT_LEFT;
+         break;
+      case ST_ATTACHMENT_BACK_LEFT:
+         att = __DRI_BUFFER_BACK_LEFT;
+         break;
+      case ST_ATTACHMENT_FRONT_RIGHT:
+         att = __DRI_BUFFER_FRONT_RIGHT;
+         break;
+      case ST_ATTACHMENT_BACK_RIGHT:
+         att = __DRI_BUFFER_BACK_RIGHT;
+         break;
+      case ST_ATTACHMENT_DEPTH_STENCIL:
+         att = __DRI_BUFFER_DEPTH_STENCIL;
+         break;
+      default:
+         att = -1;
+         break;
+      }
+
+      bpp = util_format_get_blocksizebits(format);
+
+      if (att >= 0) {
+         attachments[num_attachments++] = att;
+         if (with_format) {
+            attachments[num_attachments++] = bpp;
+         }
+      }
+   }
+
+   if (with_format) {
+      num_attachments /= 2;
+      buffers = loader->getBuffersWithFormat(dri_drawable,
+            &dri_drawable->w, &dri_drawable->h,
+            attachments, num_attachments,
+            &num_buffers, dri_drawable->loaderPrivate);
+   }
+   else {
+      buffers = loader->getBuffers(dri_drawable,
+            &dri_drawable->w, &dri_drawable->h,
+            attachments, num_attachments,
+            &num_buffers, dri_drawable->loaderPrivate);
+   }
+
+   if (buffers) {
+      /* set one cliprect to cover the whole dri_drawable */
+      dri_drawable->x = 0;
+      dri_drawable->y = 0;
+      dri_drawable->backX = 0;
+      dri_drawable->backY = 0;
+      dri_drawable->numClipRects = 1;
+      dri_drawable->pClipRects[0].x1 = 0;
+      dri_drawable->pClipRects[0].y1 = 0;
+      dri_drawable->pClipRects[0].x2 = dri_drawable->w;
+      dri_drawable->pClipRects[0].y2 = dri_drawable->h;
+      dri_drawable->numBackClipRects = 1;
+      dri_drawable->pBackClipRects[0].x1 = 0;
+      dri_drawable->pBackClipRects[0].y1 = 0;
+      dri_drawable->pBackClipRects[0].x2 = dri_drawable->w;
+      dri_drawable->pBackClipRects[0].y2 = dri_drawable->h;
+
+      *count = num_buffers;
+   }
+
+   return buffers;
+}
+
+/**
+ * Process __DRIbuffer and convert them into pipe_textures.
+ */
+static void
+dri_drawable_process_buffers(struct dri_drawable *drawable,
+                             __DRIbuffer *buffers, unsigned count)
+{
+   struct dri_screen *screen = dri_screen(drawable->sPriv);
+   __DRIdrawable *dri_drawable = drawable->dPriv;
+   struct pipe_texture templ;
+   struct winsys_handle whandle;
+   boolean have_depth = FALSE;
+   unsigned i;
+
+   if (drawable->old_num == count &&
+       drawable->old_w == dri_drawable->w &&
+       drawable->old_h == dri_drawable->h &&
+       memcmp(drawable->old, buffers, sizeof(__DRIbuffer) * count) == 0)
+      return;
+
+   for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
+      pipe_texture_reference(&drawable->textures[i], NULL);
+
+   memset(&templ, 0, sizeof(templ));
+   templ.tex_usage = PIPE_TEXTURE_USAGE_RENDER_TARGET;
+   templ.target = PIPE_TEXTURE_2D;
+   templ.last_level = 0;
+   templ.width0 = dri_drawable->w;
+   templ.height0 = dri_drawable->h;
+   templ.depth0 = 1;
+
+   memset(&whandle, 0, sizeof(whandle));
+
+   for (i = 0; i < count; i++) {
+      __DRIbuffer *buf = &buffers[i];
+      enum st_attachment_type statt;
+      enum pipe_format format;
+
+      switch (buf->attachment) {
+      case __DRI_BUFFER_FRONT_LEFT:
+         if (!screen->auto_fake_front) {
+            statt = ST_ATTACHMENT_INVALID;
+            break;
+         }
+         /* fallthrough */
+      case __DRI_BUFFER_FAKE_FRONT_LEFT:
+         statt = ST_ATTACHMENT_FRONT_LEFT;
+         break;
+      case __DRI_BUFFER_BACK_LEFT:
+         statt = ST_ATTACHMENT_BACK_LEFT;
+         break;
+      case __DRI_BUFFER_DEPTH:
+      case __DRI_BUFFER_DEPTH_STENCIL:
+      case __DRI_BUFFER_STENCIL:
+         /* use only the first depth/stencil buffer */
+         if (!have_depth) {
+            have_depth = TRUE;
+            statt = ST_ATTACHMENT_DEPTH_STENCIL;
+         }
+         else {
+            statt = ST_ATTACHMENT_INVALID;
+         }
+         break;
+      default:
+         statt = ST_ATTACHMENT_INVALID;
+         break;
+      }
+
+      format = dri_drawable_get_format(drawable, statt);
+      if (statt == ST_ATTACHMENT_INVALID || format == PIPE_FORMAT_NONE)
+         continue;
+
+      templ.format = format;
+      whandle.handle = buf->name;
+      whandle.stride = buf->pitch;
+
+      drawable->textures[statt] =
+         screen->pipe_screen->texture_from_handle(screen->pipe_screen,
+               &templ, &whandle);
+   }
+
+   drawable->old_num = count;
+   drawable->old_w = dri_drawable->w;
+   drawable->old_h = dri_drawable->h;
+   memcpy(drawable->old, buffers, sizeof(__DRIbuffer) * count);
+}
+
+/*
+ * Backend functions for st_framebuffer interface.
+ */
+
+void
+dri_allocate_textures(struct dri_drawable *drawable,
+                      const enum st_attachment_type *statts,
+                      unsigned count)
+{
+   __DRIbuffer *buffers;
+   unsigned num_buffers = count;
+
+   buffers = dri_drawable_get_buffers(drawable, statts, &num_buffers);
+   dri_drawable_process_buffers(drawable, buffers, num_buffers);
+}
+
+void
+dri_flush_frontbuffer(struct dri_drawable *drawable,
+                      enum st_attachment_type statt)
+{
+   __DRIdrawable *dri_drawable = drawable->dPriv;
+   struct __DRIdri2LoaderExtensionRec *loader = drawable->sPriv->dri2.loader;
+
+   if (loader->flushFrontBuffer == NULL)
+      return;
+
+   if (statt == ST_ATTACHMENT_FRONT_LEFT) {
+      loader->flushFrontBuffer(dri_drawable, dri_drawable->loaderPrivate);
+   }
+}
+
+/*
+ * Backend function init_screen.
+ */
+
+static const __DRIextension *dri_screen_extensions[] = {
+   &driReadDrawableExtension,
+   &driCopySubBufferExtension.base,
+   &driSwapControlExtension.base,
+   &driFrameTrackingExtension.base,
+   &driMediaStreamCounterExtension.base,
+   &dri2TexBufferExtension.base,
+   &dri2FlushExtension.base,
+   NULL
+};
+
+/**
+ * This is the driver specific part of the createNewScreen entry point.
+ *
+ * Returns the __GLcontextModes supported by this driver.
+ */
+const __DRIconfig **
+dri_init_screen2(__DRIscreen * sPriv)
+{
+   struct dri_screen *screen;
+   struct drm_create_screen_arg arg;
+
+   screen = CALLOC_STRUCT(dri_screen);
+   if (!screen)
+      return NULL;
+
+   screen->api = drm_api_create();
+   screen->sPriv = sPriv;
+   screen->fd = sPriv->fd;
+   sPriv->private = (void *)screen;
+   sPriv->extensions = dri_screen_extensions;
+   arg.mode = DRM_CREATE_NORMAL;
+
+   screen->pipe_screen = screen->api->create_screen(screen->api, screen->fd, &arg);
+   if (!screen->pipe_screen) {
+      debug_printf("%s: failed to create pipe_screen\n", __FUNCTION__);
+      goto fail;
+   }
+
+   screen->smapi = dri_create_st_manager(screen);
+   if (!screen->smapi)
+      goto fail;
+
+   driParseOptionInfo(&screen->optionCache,
+		      __driConfigOptions, __driNConfigOptions);
+
+   screen->auto_fake_front = dri_with_format(sPriv);
+
+   return dri_fill_in_modes(screen, 32);
+fail:
+   dri_destroy_screen(sPriv);
+   return NULL;
+}
+
+/* vim: set sw=3 ts=8 sts=3 expandtab: */