Commit: c17ba4a9032246cc674cdc03a2f39b91b32fecd9
Author: Jeroen Bakker
Date:   Wed Jun 20 12:26:06 2018 +0200
Branches: blender2.8
https://developer.blender.org/rBc17ba4a9032246cc674cdc03a2f39b91b32fecd9

T55550: Workbench Shadows are incorrect in first draw cycle

Shadows uses the old location for light_direction. Maybe a merge
conflict.

===================================================================

M       
source/blender/draw/engines/workbench/shaders/workbench_deferred_composite_frag.glsl
M       source/blender/draw/engines/workbench/workbench_data.c
M       source/blender/draw/engines/workbench/workbench_deferred.c
M       source/blender/draw/engines/workbench/workbench_studiolight.c

===================================================================

diff --git 
a/source/blender/draw/engines/workbench/shaders/workbench_deferred_composite_frag.glsl
 
b/source/blender/draw/engines/workbench/shaders/workbench_deferred_composite_frag.glsl
index 4a1d88c29c1..c72df6b677d 100644
--- 
a/source/blender/draw/engines/workbench/shaders/workbench_deferred_composite_frag.glsl
+++ 
b/source/blender/draw/engines/workbench/shaders/workbench_deferred_composite_frag.glsl
@@ -106,7 +106,7 @@ void main()
 #endif
 
 #ifdef V3D_SHADING_SHADOW
-       float light_factor = -dot(normal_viewport, 
world_data.light_direction_vs.xyz);
+       float light_factor = -dot(normal_viewport, 
world_data.lights[0].light_direction_vs.xyz);
        /* The step function might be ok for meshes but it's
         * clearly not the case for hairs. Do smoothstep in this case. */
        float shadow_mix = (diffuse_color.a == 1.0 || diffuse_color.a == 0.0)
diff --git a/source/blender/draw/engines/workbench/workbench_data.c 
b/source/blender/draw/engines/workbench/workbench_data.c
index b4a2330f173..efadf969830 100644
--- a/source/blender/draw/engines/workbench/workbench_data.c
+++ b/source/blender/draw/engines/workbench/workbench_data.c
@@ -155,8 +155,7 @@ void 
workbench_private_data_get_light_direction(WORKBENCH_PrivateData *wpd, floa
 
        copy_v3_v3(light_direction, scene->display.light_direction);
        negate_v3(light_direction);
-
-       DRW_uniformbuffer_update(wpd->world_ubo, &wpd->world_data);
+       DRW_uniformbuffer_update(wpd->world_ubo, wd);
 }
 
 static void workbench_private_material_free(void *data)
diff --git a/source/blender/draw/engines/workbench/workbench_deferred.c 
b/source/blender/draw/engines/workbench/workbench_deferred.c
index 3bf7c34d5eb..9b1a17a372a 100644
--- a/source/blender/draw/engines/workbench/workbench_deferred.c
+++ b/source/blender/draw/engines/workbench/workbench_deferred.c
@@ -49,7 +49,7 @@
 
 /* *********** STATIC *********** */
 
-// #define DEBUG_SHADOW_VOLUME
+/* #define DEBUG_SHADOW_VOLUME */
 
 #ifdef DEBUG_SHADOW_VOLUME
 #  include "draw_debug.h"
@@ -76,7 +76,6 @@ static struct {
        struct GPUTexture *effect_buffer_tx; /* ref only, not alloced */
 
        SceneDisplay display; /* world light direction for shadows */
-       float light_direction_vs[3];
        int next_object_id;
        float normal_world_matrix[3][3];
 
@@ -485,8 +484,6 @@ void workbench_deferred_cache_init(WORKBENCH_Data *vedata)
        WORKBENCH_PrivateData *wpd = stl->g_data;
        DRWShadingGroup *grp;
        const DRWContextState *draw_ctx = DRW_context_state_get();
-       static float light_multiplier = 1.0f;
-
 
        Scene *scene = draw_ctx->scene;
 
@@ -494,9 +491,9 @@ void workbench_deferred_cache_init(WORKBENCH_Data *vedata)
        /* Deferred Mix Pass */
        {
                workbench_private_data_get_light_direction(wpd, 
e_data.display.light_direction);
+               studiolight_update_light(wpd, e_data.display.light_direction);
 
                e_data.display.shadow_shift = scene->display.shadow_shift;
-               copy_v3_v3(e_data.light_direction_vs, 
wpd->world_data.lights[0].light_direction_vs);
 
                if (SHADOW_ENABLED(wpd)) {
                        psl->composite_pass = DRW_pass_create(
@@ -504,7 +501,7 @@ void workbench_deferred_cache_init(WORKBENCH_Data *vedata)
                        grp = DRW_shgroup_create(wpd->composite_sh, 
psl->composite_pass);
                        workbench_composite_uniforms(wpd, grp);
                        DRW_shgroup_stencil_mask(grp, 0x00);
-                       DRW_shgroup_uniform_float(grp, "lightMultiplier", 
&light_multiplier, 1);
+                       DRW_shgroup_uniform_float_copy(grp, "lightMultiplier", 
1.0f);
                        DRW_shgroup_uniform_float(grp, "shadowMultiplier", 
&wpd->shadow_multiplier, 1);
                        DRW_shgroup_uniform_float(grp, "shadowShift", 
&scene->display.shadow_shift, 1);
                        DRW_shgroup_call_add(grp, 
DRW_cache_fullscreen_quad_get(), NULL);
@@ -548,7 +545,6 @@ void workbench_deferred_cache_init(WORKBENCH_Data *vedata)
                        DRW_shgroup_call_add(grp, 
DRW_cache_fullscreen_quad_get(), NULL);
 #endif
 
-                       studiolight_update_light(wpd, 
e_data.display.light_direction);
                }
                else {
                        psl->composite_pass = DRW_pass_create(
diff --git a/source/blender/draw/engines/workbench/workbench_studiolight.c 
b/source/blender/draw/engines/workbench/workbench_studiolight.c
index e5e24cbb88a..f2453bf7070 100644
--- a/source/blender/draw/engines/workbench/workbench_studiolight.c
+++ b/source/blender/draw/engines/workbench/workbench_studiolight.c
@@ -121,6 +121,7 @@ static BoundBox 
*studiolight_object_shadow_bbox_get(WORKBENCH_PrivateData *wpd,
                for (int i = 0; i < 8; ++i) {
                        mul_m4_v3(wpd->shadow_mat, oed->shadow_bbox.vec[i]);
                }
+               oed->shadow_bbox_dirty = false;
        }
 
        return &oed->shadow_bbox;

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