DRW: Make use of shader shared header

# Conflicts:
#	source/blender/draw/intern/draw_manager.h
#	source/blender/draw/intern/draw_manager_exec.c
#	source/blender/draw/intern/draw_shader_shared.h

source/blender/draw/intern/draw_manager.c

@@ -616,7 +616,7 @@ static void drw_manager_init(DRWManager *dst, GPUViewport *viewport, const int s
   }
 
   if (G_draw.view_ubo == NULL) {
-    G_draw.view_ubo = GPU_uniformbuf_create_ex(sizeof(DRWViewUboStorage), NULL, "G_draw.view_ubo");
+    G_draw.view_ubo = GPU_uniformbuf_create_ex(sizeof(ViewInfos), NULL, "G_draw.view_ubo");
   }
 
   if (dst->draw_list == NULL) {

source/blender/draw/intern/draw_manager.h

@@ -27,6 +27,7 @@
 #include "GPU_viewport.h"
 
 #include "draw_instance_data.h"
+#include "draw_shader_shared.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -424,31 +425,13 @@ struct DRWPass {
   char name[MAX_PASS_NAME];
 };
 
-/* keep in sync with viewBlock */
-typedef struct DRWViewUboStorage {
-  /* View matrices */
-  float persmat[4][4];
-  float persinv[4][4];
-  float viewmat[4][4];
-  float viewinv[4][4];
-  float winmat[4][4];
-  float wininv[4][4];
-
-  float clipplanes[6][4];
-  float viewvecs[2][4];
-  /* Should not be here. Not view dependent (only main view). */
-  float viewcamtexcofac[4];
-} DRWViewUboStorage;
-
-BLI_STATIC_ASSERT_ALIGN(DRWViewUboStorage, 16)
-
 #define MAX_CULLED_VIEWS 32
 
 struct DRWView {
   /** Parent view if this is a sub view. NULL otherwise. */
   struct DRWView *parent;
 
-  DRWViewUboStorage storage;
+  ViewInfos storage;
   /** Number of active clipplanes. */
   int clip_planes_len;
   /** Does culling result needs to be updated. */
@@ -633,7 +616,7 @@ typedef struct DRWManager {
   uint primary_view_ct;
   /** TODO(@fclem): Remove this. Only here to support
    * shaders without common_view_lib.glsl */
-  DRWViewUboStorage view_storage_cpy;
+  ViewInfos view_storage_cpy;
 
 #ifdef USE_GPU_SELECT
   uint select_id;

source/blender/draw/intern/draw_manager_data.c

@@ -1825,7 +1825,7 @@ static void draw_frustum_bound_sphere_calc(const BoundBox *bbox,
   }
 }
 
-static void draw_view_matrix_state_update(DRWViewUboStorage *storage,
+static void draw_view_matrix_state_update(ViewInfos *storage,
                                           const float viewmat[4][4],
                                           const float winmat[4][4])
 {
@@ -2037,7 +2037,7 @@ void DRW_view_clip_planes_set(DRWView *view, float (*planes)[4], int plane_len)
   BLI_assert(plane_len <= MAX_CLIP_PLANES);
   view->clip_planes_len = plane_len;
   if (plane_len > 0) {
-    memcpy(view->storage.clipplanes, planes, sizeof(float[4]) * plane_len);
+    memcpy(view->storage.clip_planes, planes, sizeof(float[4]) * plane_len);
   }
 }
 
@@ -2089,21 +2089,21 @@ float DRW_view_far_distance_get(const DRWView *view)
 void DRW_view_viewmat_get(const DRWView *view, float mat[4][4], bool inverse)
 {
   view = (view) ? view : DST.view_default;
-  const DRWViewUboStorage *storage = &view->storage;
+  const ViewInfos *storage = &view->storage;
   copy_m4_m4(mat, (inverse) ? storage->viewinv : storage->viewmat);
 }
 
 void DRW_view_winmat_get(const DRWView *view, float mat[4][4], bool inverse)
 {
   view = (view) ? view : DST.view_default;
-  const DRWViewUboStorage *storage = &view->storage;
+  const ViewInfos *storage = &view->storage;
   copy_m4_m4(mat, (inverse) ? storage->wininv : storage->winmat);
 }
 
 void DRW_view_persmat_get(const DRWView *view, float mat[4][4], bool inverse)
 {
   view = (view) ? view : DST.view_default;
-  const DRWViewUboStorage *storage = &view->storage;
+  const ViewInfos *storage = &view->storage;
   copy_m4_m4(mat, (inverse) ? storage->persinv : storage->persmat);
 }
 

source/blender/draw/intern/draw_manager_exec.c

@@ -1068,8 +1068,13 @@ static void draw_shgroup(DRWShadingGroup *shgroup, DRWState pass_state)
   }
 }
 
-static void drw_update_view(void)
+static void drw_update_view(const float viewport_size[2])
 {
+  ViewInfos *storage = &DST.view_active->storage;
+  copy_v2_v2(storage->viewport_size, viewport_size);
+  copy_v2_v2(storage->viewport_size_inverse, viewport_size);
+  invert_v2(storage->viewport_size_inverse);
+
   /* TODO(fclem): update a big UBO and only bind ranges here. */
   GPU_uniformbuf_update(G_draw.view_ubo, &DST.view_active->storage);
 
@@ -1097,8 +1102,11 @@ static void drw_draw_pass_ex(DRWPass *pass,
   BLI_assert(DST.buffer_finish_called &&
              "DRW_render_instance_buffer_finish had not been called before drawing");
 
-  if (DST.view_previous != DST.view_active || DST.view_active->is_dirty) {
-    drw_update_view();
+  float viewport[4];
+  GPU_viewport_size_get_f(viewport);
+  if (DST.view_previous != DST.view_active || DST.view_active->is_dirty ||
+      !equals_v2v2(DST.view_active->storage.viewport_size, &viewport[2])) {
+    drw_update_view(&viewport[2]);
     DST.view_active->is_dirty = false;
     DST.view_previous = DST.view_active;
   }

source/blender/draw/intern/draw_shader_shared.h

@@ -2,6 +2,10 @@
 
 #ifndef GPU_SHADER
 #  include "GPU_shader_shared_utils.h"
+
+typedef struct ViewInfos ViewInfos;
+typedef struct ObjectMatrices ObjectMatrices;
+typedef struct ObjectInfos ObjectInfos;
 #endif
 
 #define DRW_SHADER_SHARED_H
@@ -21,6 +25,14 @@ struct ViewInfos {
   float4 viewvecs[2];
   /* Should not be here. Not view dependent (only main view). */
   float4 viewcamtexcofac;
+
+  float2 viewport_size;
+  float2 viewport_size_inverse;
+
+  /** Frustum culling data. */
+  /** NOTE: vec3 arrays are paded to vec4. */
+  float4 frustum_corners[8];
+  float4 frustum_planes[6];
 };
 BLI_STATIC_ASSERT_ALIGN(ViewInfos, 16)