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Workbench: Add "Shadow" factor to Xray 

This just maintain more parity accross the 2 visuals. Note that this is not
"real shadowing" just the facing factor shadowing.
This commit is contained in:
Clément Foucault 2019-01-29 03:46:57 +01:00
parent bc99f4903c
commit 8134f3f0a6
6 changed files with 32 additions and 9 deletions
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11
source/blender/draw/engines/workbench/shaders/workbench_forward_transparent_accum_frag.glsl
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@ -14,6 +14,11 @@ uniform vec3 materialDiffuseColor;
uniform vec3 materialSpecularColor;
uniform float materialRoughness;
uniform float shadowMultiplier = 0.5;
uniform float lightMultiplier = 1.0;
uniform float shadowShift = 0.1;
uniform float shadowFocus = 1.0;
#ifdef NORMAL_VIEWPORT_PASS_ENABLED
in vec3 normal_viewport;
#endif /* NORMAL_VIEWPORT_PASS_ENABLED */
@ -67,6 +72,12 @@ void main()
nor, I_vs);
#endif
#ifdef V3D_SHADING_SHADOW
float light_factor = -dot(nor, world_data.shadow_direction_vs.xyz);
float shadow_mix = smoothstep(shadowFocus, shadowShift, light_factor);
shaded_color *= mix(lightMultiplier, shadowMultiplier, shadow_mix);
#endif
/* Based on :
* McGuire and Bavoil, Weighted Blended Order-Independent Transparency, Journal of
* Computer Graphics Techniques (JCGT), vol. 2, no. 2, 122–141, 2013

6
source/blender/draw/engines/workbench/workbench_data.c
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@ -76,6 +76,12 @@ void workbench_private_data_init(WORKBENCH_PrivateData *wpd)
wpd->shading.studio_light, STUDIOLIGHT_TYPE_STUDIO);
}
float shadow_focus = scene->display.shadow_focus;
/* Clamp to avoid overshadowing and shading errors. */
CLAMP(shadow_focus, 0.0001f, 0.99999f);
wpd->shadow_shift = scene->display.shadow_shift;
wpd->shadow_focus = 1.0f - shadow_focus * (1.0f - wpd->shadow_shift);
wpd->shadow_multiplier = 1.0 - wpd->shading.shadow_intensity;
WORKBENCH_UBO_World *wd = &wpd->world_data;

9
source/blender/draw/engines/workbench/workbench_deferred.c
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@ -699,11 +699,6 @@ void workbench_deferred_cache_init(WORKBENCH_Data *vedata)
workbench_private_data_get_light_direction(wpd, e_data.display.light_direction);
studiolight_update_light(wpd, e_data.display.light_direction);
float shadow_focus = scene->display.shadow_focus;
/* Clamp to avoid overshadowing and shading errors. */
CLAMP(shadow_focus, 0.0001f, 0.99999f);
shadow_focus = 1.0f - shadow_focus * (1.0f - scene->display.shadow_shift);
if (SHADOW_ENABLED(wpd)) {
psl->composite_pass = DRW_pass_create(
"Composite", DRW_STATE_WRITE_COLOR | DRW_STATE_STENCIL_EQUAL | DRW_STATE_DEPTH_GREATER);
@ -713,7 +708,7 @@ void workbench_deferred_cache_init(WORKBENCH_Data *vedata)
DRW_shgroup_uniform_float_copy(grp, "lightMultiplier", 1.0f);
DRW_shgroup_uniform_float(grp, "shadowMultiplier", &wpd->shadow_multiplier, 1);
DRW_shgroup_uniform_float_copy(grp, "shadowShift", scene->display.shadow_shift);
DRW_shgroup_uniform_float_copy(grp, "shadowFocus", shadow_focus);
DRW_shgroup_uniform_float_copy(grp, "shadowFocus", wpd->shadow_focus);
DRW_shgroup_call_add(grp, DRW_cache_fullscreen_quad_get(), NULL);
/* Stencil Shadow passes. */
@ -753,7 +748,7 @@ void workbench_deferred_cache_init(WORKBENCH_Data *vedata)
DRW_shgroup_uniform_float(grp, "lightMultiplier", &wpd->shadow_multiplier, 1);
DRW_shgroup_uniform_float(grp, "shadowMultiplier", &wpd->shadow_multiplier, 1);
DRW_shgroup_uniform_float_copy(grp, "shadowShift", scene->display.shadow_shift);
DRW_shgroup_uniform_float_copy(grp, "shadowFocus", shadow_focus);
DRW_shgroup_uniform_float_copy(grp, "shadowFocus", wpd->shadow_focus);
DRW_shgroup_call_add(grp, DRW_cache_fullscreen_quad_get(), NULL);
#endif
}

6
source/blender/draw/engines/workbench/workbench_forward.c
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@ -182,6 +182,11 @@ WORKBENCH_MaterialData *workbench_forward_get_or_create_material_data(
if (SPECULAR_HIGHLIGHT_ENABLED(wpd) || MATCAP_ENABLED(wpd)) {
DRW_shgroup_uniform_vec2(grp, "invertedViewportSize", DRW_viewport_invert_size_get(), 1);
}
if (SHADOW_ENABLED(wpd)) {
DRW_shgroup_uniform_float_copy(grp, "shadowMultiplier", wpd->shadow_multiplier);
DRW_shgroup_uniform_float_copy(grp, "shadowShift", wpd->shadow_shift);
DRW_shgroup_uniform_float_copy(grp, "shadowFocus", wpd->shadow_focus);
}
workbench_material_shgroup_uniform(wpd, grp, material, ob, false, false, interp);
material->shgrp = grp;
@ -212,7 +217,6 @@ WORKBENCH_MaterialData *workbench_forward_get_or_create_material_data(
static GPUShader *ensure_forward_accum_shaders(WORKBENCH_PrivateData *wpd, bool use_textures, bool is_hair)
{
int index = workbench_material_get_accum_shader_index(wpd, use_textures, is_hair);
BLI_assert(index < MAX_ACCUM_SHADERS);
if (e_data.transparent_accum_sh_cache[index] == NULL) {
char *defines = workbench_material_build_defines(wpd, use_textures, is_hair);
char *transparent_accum_vert = workbench_build_forward_vert(is_hair);

5
source/blender/draw/engines/workbench/workbench_materials.c
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@ -179,6 +179,7 @@ int workbench_material_get_composite_shader_index(WORKBENCH_PrivateData *wpd)
SET_FLAG_FROM_TEST(index, wpd->shading.flag & V3D_SHADING_CAVITY, 1 << 3);
SET_FLAG_FROM_TEST(index, wpd->shading.flag & V3D_SHADING_OBJECT_OUTLINE, 1 << 4);
SET_FLAG_FROM_TEST(index, MATDATA_PASS_ENABLED(wpd), 1 << 5);
BLI_assert(index < MAX_COMPOSITE_SHADERS);
return index;
}
@ -194,6 +195,7 @@ int workbench_material_get_prepass_shader_index(
SET_FLAG_FROM_TEST(index, MATCAP_ENABLED(wpd), 1 << 4);
SET_FLAG_FROM_TEST(index, use_textures, 1 << 5);
SET_FLAG_FROM_TEST(index, wpd->world_clip_planes != NULL, 1 << 6);
BLI_assert(index < MAX_PREPASS_SHADERS);
return index;
}
@ -205,6 +207,9 @@ int workbench_material_get_accum_shader_index(WORKBENCH_PrivateData *wpd, bool u
index = SPECULAR_HIGHLIGHT_ENABLED(wpd) ? 3 : wpd->shading.light;
SET_FLAG_FROM_TEST(index, use_textures, 1 << 2);
SET_FLAG_FROM_TEST(index, is_hair, 1 << 3);
/* 1 bits SHADOWS (only facing factor) */
SET_FLAG_FROM_TEST(index, SHADOW_ENABLED(wpd), 1 << 4);
BLI_assert(index < MAX_ACCUM_SHADERS);
return index;
}

4
source/blender/draw/engines/workbench/workbench_private.h
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@ -45,7 +45,7 @@
#define M_GOLDEN_RATION_CONJUGATE 0.618033988749895
#define MAX_COMPOSITE_SHADERS (1 << 6)
#define MAX_PREPASS_SHADERS (1 << 7)
#define MAX_ACCUM_SHADERS (1 << 4)
#define MAX_ACCUM_SHADERS (1 << 5)
#define MAX_CAVITY_SHADERS (1 << 3)
#define TEXTURE_DRAWING_ENABLED(wpd) (wpd->shading.color_type == V3D_SHADING_TEXTURE_COLOR)
@ -212,6 +212,8 @@ typedef struct WORKBENCH_PrivateData {
struct DRWShadingGroup *depth_shgrp;
WORKBENCH_UBO_World world_data;
float shadow_multiplier;
float shadow_shift;
float shadow_focus;
float cached_shadow_direction[3];
float shadow_mat[4][4];
float shadow_inv[4][4];