util: Move gallium's PIPE_FORMAT utils to /util/format/
[mesa.git] / src / gallium / state_trackers / dri / dri_drawable.c
index 930387f8a67330d5703f7a89ae8bcd00336b39fb..4b0ba5f6719c05b260542ed47b5cd5874a887cf5 100644 (file)
 #include "dri_screen.h"
 #include "dri_context.h"
 #include "dri_drawable.h"
-#include "dri_st_api.h"
-#include "dri1.h"
 
 #include "pipe/p_screen.h"
-#include "util/u_format.h"
+#include "util/format/u_format.h"
 #include "util/u_memory.h"
 #include "util/u_inlines.h"
-/**
- * These are used for GLX_EXT_texture_from_pixmap
- */
-void dri2_set_tex_buffer2(__DRIcontext *pDRICtx, GLint target,
-                          GLint format, __DRIdrawable *dPriv)
+
+static uint32_t drifb_ID = 0;
+
+static bool
+dri_st_framebuffer_validate(struct st_context_iface *stctx,
+                            struct st_framebuffer_iface *stfbi,
+                            const enum st_attachment_type *statts,
+                            unsigned count,
+                            struct pipe_resource **out)
 {
-   struct dri_context *ctx = dri_context(pDRICtx);
-   struct dri_drawable *drawable = dri_drawable(dPriv);
-   struct pipe_texture *pt =
-      dri_get_st_framebuffer_texture(drawable->stfb, ST_ATTACHMENT_FRONT_LEFT);
+   struct dri_context *ctx = (struct dri_context *)stctx->st_manager_private;
+   struct dri_drawable *drawable =
+      (struct dri_drawable *) stfbi->st_manager_private;
+   struct dri_screen *screen = dri_screen(drawable->sPriv);
+   unsigned statt_mask, new_mask;
+   bool new_stamp;
+   int i;
+   unsigned int lastStamp;
+   struct pipe_resource **textures =
+      drawable->stvis.samples > 1 ? drawable->msaa_textures
+                                  : drawable->textures;
 
-   if (pt) {
-      ctx->st->teximage(ctx->st,
-            (target == GL_TEXTURE_2D) ? ST_TEXTURE_2D : ST_TEXTURE_RECT,
-            0, drawable->stvis.color_format, pt, FALSE);
-   }
+   statt_mask = 0x0;
+   for (i = 0; i < count; i++)
+      statt_mask |= (1 << statts[i]);
+
+   /* record newly allocated textures */
+   new_mask = (statt_mask & ~drawable->texture_mask);
+
+   /*
+    * dPriv->dri2.stamp is the server stamp.  dPriv->lastStamp is the
+    * client stamp.  It has the value of the server stamp when last
+    * checked.
+    */
+   do {
+      lastStamp = drawable->dPriv->lastStamp;
+      new_stamp = (drawable->texture_stamp != lastStamp);
+
+      if (new_stamp || new_mask || screen->broken_invalidate) {
+         if (new_stamp && drawable->update_drawable_info)
+            drawable->update_drawable_info(drawable);
+
+         drawable->allocate_textures(ctx, drawable, statts, count);
+
+         /* add existing textures */
+         for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
+            if (textures[i])
+               statt_mask |= (1 << i);
+         }
+
+         drawable->texture_stamp = lastStamp;
+         drawable->texture_mask = statt_mask;
+      }
+   } while (lastStamp != drawable->dPriv->lastStamp);
+
+   if (!out)
+      return true;
+
+   /* Set the window-system buffers for the state tracker. */
+   for (i = 0; i < count; i++)
+      pipe_resource_reference(&out[i], textures[statts[i]]);
+
+   return true;
 }
 
-void dri2_set_tex_buffer(__DRIcontext *pDRICtx, GLint target,
-                         __DRIdrawable *dPriv)
+static bool
+dri_st_framebuffer_flush_front(struct st_context_iface *stctx,
+                               struct st_framebuffer_iface *stfbi,
+                               enum st_attachment_type statt)
 {
-   dri2_set_tex_buffer2(pDRICtx, target, __DRI_TEXTURE_FORMAT_RGBA, dPriv);
+   struct dri_context *ctx = (struct dri_context *)stctx->st_manager_private;
+   struct dri_drawable *drawable =
+      (struct dri_drawable *) stfbi->st_manager_private;
+
+   /* XXX remove this and just set the correct one on the framebuffer */
+   drawable->flush_frontbuffer(ctx, drawable, statt);
+
+   return true;
+}
+
+/**
+ * The state tracker framebuffer interface flush_swapbuffers callback
+ */
+static bool
+dri_st_framebuffer_flush_swapbuffers(struct st_context_iface *stctx,
+                                     struct st_framebuffer_iface *stfbi)
+{
+   struct dri_context *ctx = (struct dri_context *)stctx->st_manager_private;
+   struct dri_drawable *drawable =
+      (struct dri_drawable *) stfbi->st_manager_private;
+
+   if (drawable->flush_swapbuffers)
+      drawable->flush_swapbuffers(ctx, drawable);
+
+   return true;
 }
 
 /**
  * This is called when we need to set up GL rendering to a new X window.
  */
-boolean
+bool
 dri_create_buffer(__DRIscreen * sPriv,
                  __DRIdrawable * dPriv,
-                 const __GLcontextModes * visual, boolean isPixmap)
+                 const struct gl_config * visual, bool isPixmap)
 {
-   struct dri_screen *screen = sPriv->private;
+   struct dri_screen *screen = sPriv->driverPrivate;
    struct dri_drawable *drawable = NULL;
 
    if (isPixmap)
@@ -83,39 +153,391 @@ dri_create_buffer(__DRIscreen * sPriv,
       goto fail;
 
    dri_fill_st_visual(&drawable->stvis, screen, visual);
-   drawable->stfb = dri_create_st_framebuffer(drawable);
-   if (drawable->stfb == NULL)
-      goto fail;
 
+   /* setup the st_framebuffer_iface */
+   drawable->base.visual = &drawable->stvis;
+   drawable->base.flush_front = dri_st_framebuffer_flush_front;
+   drawable->base.validate = dri_st_framebuffer_validate;
+   drawable->base.flush_swapbuffers = dri_st_framebuffer_flush_swapbuffers;
+   drawable->base.st_manager_private = (void *) drawable;
+
+   drawable->screen = screen;
    drawable->sPriv = sPriv;
    drawable->dPriv = dPriv;
-   dPriv->driverPrivate = (void *)drawable;
 
-   drawable->desired_fences = 2;
+   dPriv->driverPrivate = (void *)drawable;
+   p_atomic_set(&drawable->base.stamp, 1);
+   drawable->base.ID = p_atomic_inc_return(&drifb_ID);
+   drawable->base.state_manager = &screen->base;
 
-   return GL_TRUE;
+   return true;
 fail:
    FREE(drawable);
-   return GL_FALSE;
+   return false;
 }
 
 void
 dri_destroy_buffer(__DRIdrawable * dPriv)
 {
    struct dri_drawable *drawable = dri_drawable(dPriv);
+   struct dri_screen *screen = drawable->screen;
+   struct st_api *stapi = screen->st_api;
    int i;
 
-   dri1_swap_fences_clear(drawable);
+   pipe_surface_reference(&drawable->drisw_surface, NULL);
 
-   pipe_surface_reference(&drawable->dri1_surface, NULL);
    for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
-      pipe_texture_reference(&drawable->textures[i], NULL);
+      pipe_resource_reference(&drawable->textures[i], NULL);
+   for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
+      pipe_resource_reference(&drawable->msaa_textures[i], NULL);
 
-   dri_destroy_st_framebuffer(drawable->stfb);
+   screen->base.screen->fence_reference(screen->base.screen,
+         &drawable->throttle_fence, NULL);
 
-   drawable->desired_fences = 0;
+   /* Notify the st manager that this drawable is no longer valid */
+   stapi->destroy_drawable(stapi, &drawable->base);
 
    FREE(drawable);
 }
 
+/**
+ * Validate the texture at an attachment.  Allocate the texture if it does not
+ * exist.  Used by the TFP extension.
+ */
+static void
+dri_drawable_validate_att(struct dri_context *ctx,
+                          struct dri_drawable *drawable,
+                          enum st_attachment_type statt)
+{
+   enum st_attachment_type statts[ST_ATTACHMENT_COUNT];
+   unsigned i, count = 0;
+
+   /* check if buffer already exists */
+   if (drawable->texture_mask & (1 << statt))
+      return;
+
+   /* make sure DRI2 does not destroy existing buffers */
+   for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
+      if (drawable->texture_mask & (1 << i)) {
+         statts[count++] = i;
+      }
+   }
+   statts[count++] = statt;
+
+   drawable->texture_stamp = drawable->dPriv->lastStamp - 1;
+
+   drawable->base.validate(ctx->st, &drawable->base, statts, count, NULL);
+}
+
+/**
+ * These are used for GLX_EXT_texture_from_pixmap
+ */
+static void
+dri_set_tex_buffer2(__DRIcontext *pDRICtx, GLint target,
+                    GLint format, __DRIdrawable *dPriv)
+{
+   struct dri_context *ctx = dri_context(pDRICtx);
+   struct st_context_iface *st = ctx->st;
+   struct dri_drawable *drawable = dri_drawable(dPriv);
+   struct pipe_resource *pt;
+
+   if (st->thread_finish)
+      st->thread_finish(st);
+
+   dri_drawable_validate_att(ctx, drawable, ST_ATTACHMENT_FRONT_LEFT);
+
+   /* Use the pipe resource associated with the X drawable */
+   pt = drawable->textures[ST_ATTACHMENT_FRONT_LEFT];
+
+   if (pt) {
+      enum pipe_format internal_format = pt->format;
+
+      if (format == __DRI_TEXTURE_FORMAT_RGB)  {
+         /* only need to cover the formats recognized by dri_fill_st_visual */
+         switch (internal_format) {
+         case PIPE_FORMAT_R16G16B16A16_FLOAT:
+            internal_format = PIPE_FORMAT_R16G16B16X16_FLOAT;
+            break;
+         case PIPE_FORMAT_B10G10R10A2_UNORM:
+            internal_format = PIPE_FORMAT_B10G10R10X2_UNORM;
+            break;
+         case PIPE_FORMAT_R10G10B10A2_UNORM:
+            internal_format = PIPE_FORMAT_R10G10B10X2_UNORM;
+            break;
+         case PIPE_FORMAT_BGRA8888_UNORM:
+            internal_format = PIPE_FORMAT_BGRX8888_UNORM;
+            break;
+         case PIPE_FORMAT_ARGB8888_UNORM:
+            internal_format = PIPE_FORMAT_XRGB8888_UNORM;
+            break;
+         default:
+            break;
+         }
+      }
+
+      drawable->update_tex_buffer(drawable, ctx, pt);
+
+      ctx->st->teximage(ctx->st,
+            (target == GL_TEXTURE_2D) ? ST_TEXTURE_2D : ST_TEXTURE_RECT,
+            0, internal_format, pt, false);
+   }
+}
+
+static void
+dri_set_tex_buffer(__DRIcontext *pDRICtx, GLint target,
+                   __DRIdrawable *dPriv)
+{
+   dri_set_tex_buffer2(pDRICtx, target, __DRI_TEXTURE_FORMAT_RGBA, dPriv);
+}
+
+const __DRItexBufferExtension driTexBufferExtension = {
+   .base = { __DRI_TEX_BUFFER, 2 },
+
+   .setTexBuffer       = dri_set_tex_buffer,
+   .setTexBuffer2      = dri_set_tex_buffer2,
+   .releaseTexBuffer   = NULL,
+};
+
+/**
+ * Get the format and binding of an attachment.
+ */
+void
+dri_drawable_get_format(struct dri_drawable *drawable,
+                        enum st_attachment_type statt,
+                        enum pipe_format *format,
+                        unsigned *bind)
+{
+   switch (statt) {
+   case ST_ATTACHMENT_FRONT_LEFT:
+   case ST_ATTACHMENT_BACK_LEFT:
+   case ST_ATTACHMENT_FRONT_RIGHT:
+   case ST_ATTACHMENT_BACK_RIGHT:
+      /* Other pieces of the driver stack get confused and behave incorrectly
+       * when they get an sRGB drawable. st/mesa receives "drawable->stvis"
+       * though other means and handles it correctly, so we don't really need
+       * to use an sRGB format here.
+       */
+      *format = util_format_linear(drawable->stvis.color_format);
+      *bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
+      break;
+   case ST_ATTACHMENT_DEPTH_STENCIL:
+      *format = drawable->stvis.depth_stencil_format;
+      *bind = PIPE_BIND_DEPTH_STENCIL; /* XXX sampler? */
+      break;
+   default:
+      *format = PIPE_FORMAT_NONE;
+      *bind = 0;
+      break;
+   }
+}
+
+void
+dri_pipe_blit(struct pipe_context *pipe,
+              struct pipe_resource *dst,
+              struct pipe_resource *src)
+{
+   struct pipe_blit_info blit;
+
+   if (!dst || !src)
+      return;
+
+   /* From the GL spec, version 4.2, section 4.1.11 (Additional Multisample
+    *  Fragment Operations):
+    *
+    *      If a framebuffer object is not bound, after all operations have
+    *      been completed on the multisample buffer, the sample values for
+    *      each color in the multisample buffer are combined to produce a
+    *      single color value, and that value is written into the
+    *      corresponding color buffers selected by DrawBuffer or
+    *      DrawBuffers. An implementation may defer the writing of the color
+    *      buffers until a later time, but the state of the framebuffer must
+    *      behave as if the color buffers were updated as each fragment was
+    *      processed. The method of combination is not specified. If the
+    *      framebuffer contains sRGB values, then it is recommended that the
+    *      an average of sample values is computed in a linearized space, as
+    *      for blending (see section 4.1.7).
+    *
+    * In other words, to do a resolve operation in a linear space, we have
+    * to set sRGB formats if the original resources were sRGB, so don't use
+    * util_format_linear.
+    */
+
+   memset(&blit, 0, sizeof(blit));
+   blit.dst.resource = dst;
+   blit.dst.box.width = dst->width0;
+   blit.dst.box.height = dst->height0;
+   blit.dst.box.depth = 1;
+   blit.dst.format = dst->format;
+   blit.src.resource = src;
+   blit.src.box.width = src->width0;
+   blit.src.box.height = src->height0;
+   blit.src.box.depth = 1;
+   blit.src.format = src->format;
+   blit.mask = PIPE_MASK_RGBA;
+   blit.filter = PIPE_TEX_FILTER_NEAREST;
+
+   pipe->blit(pipe, &blit);
+}
+
+static void
+dri_postprocessing(struct dri_context *ctx,
+                   struct dri_drawable *drawable,
+                   enum st_attachment_type att)
+{
+   struct pipe_resource *src = drawable->textures[att];
+   struct pipe_resource *zsbuf = drawable->textures[ST_ATTACHMENT_DEPTH_STENCIL];
+
+   if (ctx->pp && src)
+      pp_run(ctx->pp, src, src, zsbuf);
+}
+
+/**
+ * DRI2 flush extension, the flush_with_flags function.
+ *
+ * \param context           the context
+ * \param drawable          the drawable to flush
+ * \param flags             a combination of _DRI2_FLUSH_xxx flags
+ * \param throttle_reason   the reason for throttling, 0 = no throttling
+ */
+void
+dri_flush(__DRIcontext *cPriv,
+          __DRIdrawable *dPriv,
+          unsigned flags,
+          enum __DRI2throttleReason reason)
+{
+   struct dri_context *ctx = dri_context(cPriv);
+   struct dri_drawable *drawable = dri_drawable(dPriv);
+   struct st_context_iface *st;
+   unsigned flush_flags;
+   bool swap_msaa_buffers = false;
+
+   if (!ctx) {
+      assert(0);
+      return;
+   }
+
+   st = ctx->st;
+   if (st->thread_finish)
+      st->thread_finish(st);
+
+   if (drawable) {
+      /* prevent recursion */
+      if (drawable->flushing)
+         return;
+
+      drawable->flushing = true;
+   }
+   else {
+      flags &= ~__DRI2_FLUSH_DRAWABLE;
+   }
+
+   /* Flush the drawable. */
+   if ((flags & __DRI2_FLUSH_DRAWABLE) &&
+       drawable->textures[ST_ATTACHMENT_BACK_LEFT]) {
+      struct pipe_context *pipe = st->pipe;
+
+      if (drawable->stvis.samples > 1 &&
+          (reason == __DRI2_THROTTLE_SWAPBUFFER ||
+           reason == __DRI2_THROTTLE_COPYSUBBUFFER)) {
+         /* Resolve the MSAA back buffer. */
+         dri_pipe_blit(st->pipe,
+                       drawable->textures[ST_ATTACHMENT_BACK_LEFT],
+                       drawable->msaa_textures[ST_ATTACHMENT_BACK_LEFT]);
+
+         if (reason == __DRI2_THROTTLE_SWAPBUFFER &&
+             drawable->msaa_textures[ST_ATTACHMENT_FRONT_LEFT] &&
+             drawable->msaa_textures[ST_ATTACHMENT_BACK_LEFT]) {
+            swap_msaa_buffers = true;
+         }
+
+         /* FRONT_LEFT is resolved in drawable->flush_frontbuffer. */
+      }
+
+      dri_postprocessing(ctx, drawable, ST_ATTACHMENT_BACK_LEFT);
+
+      if (pipe->invalidate_resource &&
+          (flags & __DRI2_FLUSH_INVALIDATE_ANCILLARY)) {
+         if (drawable->textures[ST_ATTACHMENT_DEPTH_STENCIL])
+            pipe->invalidate_resource(pipe, drawable->textures[ST_ATTACHMENT_DEPTH_STENCIL]);
+         if (drawable->msaa_textures[ST_ATTACHMENT_DEPTH_STENCIL])
+            pipe->invalidate_resource(pipe, drawable->msaa_textures[ST_ATTACHMENT_DEPTH_STENCIL]);
+      }
+
+      if (ctx->hud) {
+         hud_run(ctx->hud, ctx->st->cso_context,
+                 drawable->textures[ST_ATTACHMENT_BACK_LEFT]);
+      }
+
+      pipe->flush_resource(pipe, drawable->textures[ST_ATTACHMENT_BACK_LEFT]);
+   }
+
+   flush_flags = 0;
+   if (flags & __DRI2_FLUSH_CONTEXT)
+      flush_flags |= ST_FLUSH_FRONT;
+   if (reason == __DRI2_THROTTLE_SWAPBUFFER)
+      flush_flags |= ST_FLUSH_END_OF_FRAME;
+
+   /* Flush the context and throttle if needed. */
+   if (dri_screen(ctx->sPriv)->throttle &&
+       drawable &&
+       (reason == __DRI2_THROTTLE_SWAPBUFFER ||
+        reason == __DRI2_THROTTLE_FLUSHFRONT)) {
+
+      struct pipe_screen *screen = drawable->screen->base.screen;
+      struct pipe_fence_handle *new_fence = NULL;
+
+      st->flush(st, flush_flags, &new_fence);
+
+      /* throttle on the previous fence */
+      if (drawable->throttle_fence) {
+         screen->fence_finish(screen, NULL, drawable->throttle_fence, PIPE_TIMEOUT_INFINITE);
+         screen->fence_reference(screen, &drawable->throttle_fence, NULL);
+      }
+      drawable->throttle_fence = new_fence;
+   }
+   else if (flags & (__DRI2_FLUSH_DRAWABLE | __DRI2_FLUSH_CONTEXT)) {
+      st->flush(st, flush_flags, NULL);
+   }
+
+   if (drawable) {
+      drawable->flushing = false;
+   }
+
+   /* Swap the MSAA front and back buffers, so that reading
+    * from the front buffer after SwapBuffers returns what was
+    * in the back buffer.
+    */
+   if (swap_msaa_buffers) {
+      struct pipe_resource *tmp =
+         drawable->msaa_textures[ST_ATTACHMENT_FRONT_LEFT];
+
+      drawable->msaa_textures[ST_ATTACHMENT_FRONT_LEFT] =
+         drawable->msaa_textures[ST_ATTACHMENT_BACK_LEFT];
+      drawable->msaa_textures[ST_ATTACHMENT_BACK_LEFT] = tmp;
+
+      /* Now that we have swapped the buffers, this tells the state
+       * tracker to revalidate the framebuffer.
+       */
+      p_atomic_inc(&drawable->base.stamp);
+   }
+}
+
+/**
+ * dri_throttle - A DRI2ThrottleExtension throttling function.
+ */
+static void
+dri_throttle(__DRIcontext *cPriv, __DRIdrawable *dPriv,
+             enum __DRI2throttleReason reason)
+{
+   dri_flush(cPriv, dPriv, 0, reason);
+}
+
+
+const __DRI2throttleExtension dri2ThrottleExtension = {
+    .base = { __DRI2_THROTTLE, 1 },
+
+    .throttle          = dri_throttle,
+};
+
+
 /* vim: set sw=3 ts=8 sts=3 expandtab: */