[gtk+/wip/otte/vulkan: 42/62] vulkan: Add GskVulkanRender object

[Benjamin Otte <otte src gnome org>]

commit 681554787b32dbb3534bfb0d7e25ece4cbc9e9ed
Author: Benjamin Otte <otte redhat com>
Date:   Wed Dec 7 14:50:52 2016 +0100

    vulkan: Add GskVulkanRender object
    
    This is refactoring work.
    
    GskVulkanRender is supposed to be the global object for a render
    operation, ie GskVulkanRenderer.render() will create this object for
    what it does.
    
    The object will be split into stages that perform the operations
    necessary to create a drawing.

 gsk/Makefile.am              |    2 +
 gsk/gskvulkanrender.c        |   69 ++++++++++++++++++++++++++++++++++++++++++
 gsk/gskvulkanrenderer.c      |   61 +++++++------------------------------
 gsk/gskvulkanrenderprivate.h |   29 +++++++++++++++++
 4 files changed, 111 insertions(+), 50 deletions(-)
---
diff --git a/gsk/Makefile.am b/gsk/Makefile.am
index a29ebc5..bde8dbe 100644
--- a/gsk/Makefile.am
+++ b/gsk/Makefile.am
@@ -28,6 +28,7 @@ gsk_private_vulan_source_h = \
        gskvulkanimageprivate.h \
        gskvulkanmemoryprivate.h \
        gskvulkanpipelineprivate.h \
+       gskvulkanrenderprivate.h \
        gskvulkanrendererprivate.h \
        gskvulkanshaderprivate.h
 gsk_private_vulkan_source_c = \
@@ -35,6 +36,7 @@ gsk_private_vulkan_source_c = \
        gskvulkanimage.c \
        gskvulkanmemory.c \
        gskvulkanpipeline.c \
+       gskvulkanrender.c \
        gskvulkanrenderer.c \
        gskvulkanshader.c
 endif
diff --git a/gsk/gskvulkanrender.c b/gsk/gskvulkanrender.c
new file mode 100644
index 0000000..3dff0bf
--- /dev/null
+++ b/gsk/gskvulkanrender.c
@@ -0,0 +1,69 @@
+#include "config.h"
+
+#include "gskvulkanrenderprivate.h"
+
+#include "gskvulkanpipelineprivate.h"
+
+void
+gsk_vulkan_render_init (GskVulkanRender    *self,
+                        GdkVulkanContext   *context,
+                        VkCommandPool       command_pool)
+{
+  self->vulkan = context;
+  self->command_pool = command_pool;
+
+  GSK_VK_CHECK (vkAllocateCommandBuffers, gdk_vulkan_context_get_device (self->vulkan),
+                                          &(VkCommandBufferAllocateInfo) {
+                                              .sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO,
+                                              .commandPool = self->command_pool,
+                                              .level = VK_COMMAND_BUFFER_LEVEL_PRIMARY,
+                                              .commandBufferCount = 1,
+                                          },
+                                          &self->command_buffer);
+
+  GSK_VK_CHECK (vkBeginCommandBuffer, self->command_buffer,
+                                      &(VkCommandBufferBeginInfo) {
+                                          .sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO,
+                                          .flags = 0
+                                      });
+}
+
+void
+gsk_vulkan_render_submit (GskVulkanRender *self,
+                          VkFence          fence)
+{
+  GSK_VK_CHECK (vkEndCommandBuffer, self->command_buffer);
+
+  GSK_VK_CHECK (vkQueueSubmit, gdk_vulkan_context_get_queue (self->vulkan),
+                               1,
+                               &(VkSubmitInfo) {
+                                  .sType = VK_STRUCTURE_TYPE_SUBMIT_INFO,
+                                  .waitSemaphoreCount = 1,
+                                  .pWaitSemaphores = (VkSemaphore[1]) {
+                                      gdk_vulkan_context_get_draw_semaphore (self->vulkan),
+                                  },
+                                  .pWaitDstStageMask = (VkPipelineStageFlags []) {
+                                     VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT,
+                                  },
+                                  .commandBufferCount = 1,
+                                  .pCommandBuffers = &self->command_buffer,
+                               },
+                               fence);
+
+  GSK_VK_CHECK (vkWaitForFences, gdk_vulkan_context_get_device (self->vulkan),
+                                 1,
+                                 &fence,
+                                 VK_TRUE,
+                                 INT64_MAX);
+  GSK_VK_CHECK (vkResetFences, gdk_vulkan_context_get_device (self->vulkan),
+                               1,
+                               &fence);
+}
+
+void
+gsk_vulkan_render_finish (GskVulkanRender *self)
+{
+  GSK_VK_CHECK (vkResetCommandPool, gdk_vulkan_context_get_device (self->vulkan),
+                                    self->command_pool,
+                                    0);
+}
diff --git a/gsk/gskvulkanrenderer.c b/gsk/gskvulkanrenderer.c
index e2f9591..9856f3f 100644
--- a/gsk/gskvulkanrenderer.c
+++ b/gsk/gskvulkanrenderer.c
@@ -11,6 +11,7 @@
 #include "gskvulkanbufferprivate.h"
 #include "gskvulkanimageprivate.h"
 #include "gskvulkanpipelineprivate.h"
+#include "gskvulkanrenderprivate.h"
 
 #include <graphene.h>
 
@@ -524,7 +525,7 @@ gsk_vulkan_renderer_render (GskRenderer   *renderer,
                             GskRenderNode *root)
 {
   GskVulkanRenderer *self = GSK_VULKAN_RENDERER (renderer);
-  VkCommandBuffer command_buffer;
+  GskVulkanRender render;
   GskVulkanImage *image;
 #ifdef G_ENABLE_DEBUG
   GskProfiler *profiler;
@@ -536,58 +537,18 @@ gsk_vulkan_renderer_render (GskRenderer   *renderer,
   gsk_profiler_timer_begin (profiler, self->profile_timers.cpu_time);
 #endif
 
-  GSK_VK_CHECK (vkAllocateCommandBuffers, gdk_vulkan_context_get_device (self->vulkan),
-                                          &(VkCommandBufferAllocateInfo) {
-                                              .sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO,
-                                              .commandPool = self->command_pool,
-                                              .level = VK_COMMAND_BUFFER_LEVEL_PRIMARY,
-                                              .commandBufferCount = 1,
-                                          },
-                                          &command_buffer);
-
-  GSK_VK_CHECK (vkBeginCommandBuffer, command_buffer,
-                                      &(VkCommandBufferBeginInfo) {
-                                          .sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO,
-                                          .flags = 0
-                                      });
-
-  image = gsk_vulkan_renderer_prepare_render (self, command_buffer, root);
-
-  gsk_vulkan_renderer_do_render_pass (self, command_buffer, image);
-
-  GSK_VK_CHECK (vkEndCommandBuffer, command_buffer);
-
-  GSK_VK_CHECK (vkQueueSubmit, gdk_vulkan_context_get_queue (self->vulkan),
-                               1,
-                               &(VkSubmitInfo) {
-                                  .sType = VK_STRUCTURE_TYPE_SUBMIT_INFO,
-                                  .waitSemaphoreCount = 1,
-                                  .pWaitSemaphores = (VkSemaphore[1]) {
-                                      gdk_vulkan_context_get_draw_semaphore (self->vulkan),
-                                  },
-                                  .pWaitDstStageMask = (VkPipelineStageFlags []) {
-                                     VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT,
-                                  },
-                                  .commandBufferCount = 1,
-                                  .pCommandBuffers = &command_buffer,
-                               },
-                               self->command_pool_fence);
-
-  GSK_VK_CHECK (vkWaitForFences, gdk_vulkan_context_get_device (self->vulkan),
-                                 1,
-                                 &self->command_pool_fence,
-                                 true,
-                                 INT64_MAX);
-  GSK_VK_CHECK (vkResetFences, gdk_vulkan_context_get_device (self->vulkan),
-                               1,
-                               &self->command_pool_fence);
+  gsk_vulkan_render_init (&render, self->vulkan, self->command_pool);
+
+  image = gsk_vulkan_renderer_prepare_render (self, render.command_buffer, root);
+
+  gsk_vulkan_renderer_do_render_pass (self, render.command_buffer, image);
+
+  gsk_vulkan_render_submit (&render, self->command_pool_fence);
 
-  GSK_VK_CHECK (vkResetCommandPool, gdk_vulkan_context_get_device (self->vulkan),
-                                    self->command_pool,
-                                    0);
-   
   gsk_vulkan_image_free (image);
 
+  gsk_vulkan_render_finish (&render);
+
 #ifdef G_ENABLE_DEBUG
   cpu_time = gsk_profiler_timer_end (profiler, self->profile_timers.cpu_time);
   gsk_profiler_timer_set (profiler, self->profile_timers.cpu_time, cpu_time);
diff --git a/gsk/gskvulkanrenderprivate.h b/gsk/gskvulkanrenderprivate.h
new file mode 100644
index 0000000..c1f3202
--- /dev/null
+++ b/gsk/gskvulkanrenderprivate.h
@@ -0,0 +1,29 @@
+#ifndef __GSK_VULKAN_RENDER_PRIVATE_H__
+#define __GSK_VULKAN_RENDER_PRIVATE_H__
+
+#include <gdk/gdk.h>
+
+G_BEGIN_DECLS
+
+typedef struct _GskVulkanRender GskVulkanRender;
+
+struct _GskVulkanRender
+{
+  GdkVulkanContext *vulkan;
+
+  VkCommandPool command_pool;
+  VkCommandBuffer command_buffer;
+};
+
+void                    gsk_vulkan_render_init                          (GskVulkanRender        *self,
+                                                                         GdkVulkanContext       *context,
+                                                                         VkCommandPool           
command_pool);
+
+void                    gsk_vulkan_render_submit                        (GskVulkanRender        *self,
+                                                                         VkFence                 fence);
+
+void                    gsk_vulkan_render_finish                        (GskVulkanRender        *self);
+
+G_END_DECLS
+
+#endif /* __GSK_VULKAN_RENDER_PRIVATE_H__ */