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Workbench: Fix reading and testing from depth buffer

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This commit is contained in:
Jeroen Bakker 2018-05-05 15:31:10 +02:00
parent 29aa531e51
commit d979f1fc62
4 changed files with 9 additions and 21 deletions
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2
source/blender/draw/engines/workbench/shaders/workbench_common_lib.glsl
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@ -1,3 +1,5 @@
#define NO_OBJECT_ID uint(0)
/* 4x4 bayer matrix prepared for 8bit UNORM precision error. */
#define P(x) (((x + 0.5) * (1.0 / 16.0) - 0.5) * (1.0 / 255.0))
const vec4 dither_mat4x4[4] = vec4[4](

6
source/blender/draw/engines/workbench/shaders/workbench_composite_frag.glsl
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@ -1,6 +1,5 @@
out vec4 fragColor;
uniform sampler2D depthBuffer;
uniform usampler2D objectId;
uniform sampler2D colorBuffer;
uniform sampler2D normalBuffer;
@ -17,15 +16,14 @@ void main()
{
ivec2 texel = ivec2(gl_FragCoord.xy);
vec2 uv_viewport = gl_FragCoord.xy * invertedViewportSize;
float depth = texelFetch(depthBuffer, texel, 0).r;
uint object_id = texelFetch(objectId, texel, 0).r;
#ifndef V3D_DRAWOPTION_OBJECT_OVERLAP
if (depth == 1.0) {
if (object_id == NO_OBJECT_ID) {
fragColor = vec4(background_color(world_data, uv_viewport.y), 0.0);
return;
}
#else /* !V3D_DRAWOPTION_OBJECT_OVERLAP */
uint object_id = depth == 1.0? NO_OBJECT_ID: texelFetch(objectId, texel, 0).r;
float object_overlap = calculate_object_overlap(objectId, texel, object_id);
if (object_id == NO_OBJECT_ID) {

1
source/blender/draw/engines/workbench/shaders/workbench_object_overlap_lib.glsl
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@ -1,5 +1,4 @@
#define OBJECT_OVERLAP_OFFSET 1
#define NO_OBJECT_ID uint(0)
float calculate_object_overlap(usampler2D objectId, ivec2 texel, uint object_id)
{

21
source/blender/draw/engines/workbench/workbench_materials.c
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@ -72,7 +72,6 @@ extern char datatoc_workbench_world_light_lib_glsl[];
extern DrawEngineType draw_engine_workbench_solid;
#define OBJECT_ID_PASS_ENABLED(wpd) (wpd->drawtype_options & V3D_DRAWOPTION_OBJECT_OVERLAP)
#define NORMAL_VIEWPORT_PASS_ENABLED(wpd) (wpd->drawtype_lighting & V3D_LIGHTING_STUDIO)
#define SHADOW_ENABLED(wpd) (wpd->drawtype_options & V3D_DRAWOPTION_SHADOW)
static char *workbench_build_defines(WORKBENCH_PrivateData *wpd)
@ -163,19 +162,14 @@ static void select_deferred_shaders(WORKBENCH_PrivateData *wpd)
}
/* Functions */
static uint get_material_hash(WORKBENCH_PrivateData *wpd, WORKBENCH_MaterialData *material_template)
static uint get_material_hash(WORKBENCH_MaterialData *material_template)
{
uint input[4];
float *color = material_template->color;
input[0] = (uint)(color[0] * 512);
input[1] = (uint)(color[1] * 512);
input[2] = (uint)(color[2] * 512);
/* Only hash object id when needed */
input[3] = (uint)0;
if (OBJECT_ID_PASS_ENABLED(wpd)) {
input[3] = material_template->object_id;
}
input[3] = material_template->object_id;
return BLI_ghashutil_uinthash_v4_murmur(input);
}
@ -277,12 +271,8 @@ void workbench_materials_engine_free()
static void workbench_composite_uniforms(WORKBENCH_PrivateData *wpd, DRWShadingGroup *grp)
{
DefaultTextureList *dtxl = DRW_viewport_texture_list_get();
DRW_shgroup_uniform_texture_ref(grp, "depthBuffer", &dtxl->depth);
DRW_shgroup_uniform_texture_ref(grp, "colorBuffer", &e_data.color_buffer_tx);
if (OBJECT_ID_PASS_ENABLED(wpd)) {
DRW_shgroup_uniform_texture_ref(grp, "objectId", &e_data.object_id_tx);
}
DRW_shgroup_uniform_texture_ref(grp, "objectId", &e_data.object_id_tx);
if (NORMAL_VIEWPORT_PASS_ENABLED(wpd)) {
DRW_shgroup_uniform_texture_ref(grp, "normalBuffer", &e_data.normal_buffer_tx);
}
@ -390,7 +380,7 @@ static WORKBENCH_MaterialData *get_or_create_material_data(WORKBENCH_Data *vedat
get_material_solid_color(wpd, ob, mat, color, hsv_saturation, hsv_value);
copy_v3_v3(material_template.color, color);
material_template.object_id = engine_object_data->object_id;
unsigned int hash = get_material_hash(wpd, &material_template);
unsigned int hash = get_material_hash(&material_template);
material = BLI_ghash_lookup(wpd->material_hash, SET_UINT_IN_POINTER(hash));
if (material == NULL) {
@ -509,8 +499,7 @@ void workbench_materials_draw_background(WORKBENCH_Data *vedata)
unsigned int clear_stencil = 0xFF;
GPU_framebuffer_bind(fbl->prepass_fb);
int clear_bits = GPU_DEPTH_BIT;
SET_FLAG_FROM_TEST(clear_bits, OBJECT_ID_PASS_ENABLED(wpd), GPU_COLOR_BIT);
int clear_bits = GPU_DEPTH_BIT | GPU_COLOR_BIT;
SET_FLAG_FROM_TEST(clear_bits, SHADOW_ENABLED(wpd), GPU_STENCIL_BIT);
GPU_framebuffer_clear(fbl->prepass_fb, clear_bits, clear_color, clear_depth, clear_stencil);
}