Blender Git Commits

EEVEE: Film: Make smooth transition not rely on dtxl->color persistence

This is a needed change for the viewport compositor. The compositor
needs to draw to `dtxl->color` to have correct overlay / background
composition.

The solution here is to have a separate buffer that keeps the first
sample we blend from. This increases VRAM usage but it is the most
elegant option.

Viewport Compositor: Initial commit

This introduce a new compositor engine. It applies the compositor
nodetree onto the render result in the viewport using GLSL shader.

For now it only very few nodes are supported and only the combined
pass is passed to the evaluation pass.

This reuse almost the same pipeline as `GPUMaterial`.

EEVEE: More Windows 64bits changes

Missing in previous commit

EEVEE: Fix Windows 64bits error

Windows is different of Linux

DRW: Add barebone realtime compositor engine

This is just the initial commit. Compositor just clears the framebuffer to
red.

EEVEE: Fix compiler errors in Windows

EEVEE: Use special depth shader to resolve the depth buffer

This was the cause of a bug on Intel Integrated GPU and might as well
impact other platforms.

EEVEE: LightGrid: Fix divide by zero leading to wrong world lighting

This integer divide by zero was evaluated to 0 on all platform but apple,
where it yields 1. The world lighting would then sample the 1 sample of the
first grid instead of its own sample.

EEVEE: Film: Fix undefined viewport color values after resizing

This was caused by the blend mode that was used even with full opacity.
This caused issues with the viewport was resized and the color of the
framebuffer becomes undefined, leading to undefined values in the blend
equation.

Another fix would be to clear the viewport color on resize inside the
GPUViewport.

EEVEE: Fix compilation on OSX platform

OSX driver does not support loose semicolon in code

Merge branch 'draw-viewport-data' into eevee-rewrite

# Conflicts:
# source/blender/blenlib/BLI_assert.h
# source/blender/blenloader/intern/versioning_290.c
# source/blender/draw/engines/eevee/eevee_cryptomatte.c
# source/blender/draw/engines/eevee/eevee_depth_of_field.c
# source/blender/draw/engines/eevee/eevee_effects.c
# source/blender/draw/engines/eevee/eevee_engine.c
# source/blender/draw/engines/eevee/eevee_lightcache.c
# source/blender/draw/engines/eevee/eevee_lightprobes.c
# source/blender/draw/engines/eevee/eevee_lights.c
# source/blender/draw/engines/eevee/eevee_lookdev.c
# source/blender/draw/engines/eevee/eevee_materials.c
# source/blender/draw/engines/eevee/eevee_mist.c
# source/blender/draw/engines/eevee/eevee_motion_blur.c
# source/blender/draw/engines/eevee/eevee_occlusion.c
# source/blender/draw/engines/eevee/eevee_private.h
# source/blender/draw/engines/eevee/eevee_render.c
# source/blender/draw/engines/eevee/eevee_renderpasses.c
# source/blender/draw/engines/eevee/eevee_screen_raytrace.c
# source/blender/draw/engines/eevee/eevee_shaders.c
# source/blender/draw/engines/eevee/eevee_shadows.c
# source/blender/draw/engines/eevee/eevee_shadows_cascade.c
# source/blender/draw/engines/eevee/eevee_subsurface.c
# source/blender/draw/engines/eevee/eevee_temporal_sampling.c
# source/blender/draw/engines/eevee/eevee_volumes.c
# source/blender/draw/engines/eevee/shaders/ambient_occlusion_lib.glsl
# source/blender/draw/engines/eevee/shaders/bsdf_common_lib.glsl
# source/blender/draw/engines/eevee/shaders/btdf_lut_frag.glsl
# source/blender/draw/engines/eevee/shaders/closure_eval_lib.glsl
# source/blender/draw/engines/eevee/shaders/closure_type_lib.glsl
# source/blender/draw/engines/eevee/shaders/common_uniforms_lib.glsl
# source/blender/draw/engines/eevee/shaders/common_utiltex_lib.glsl
# source/blender/draw/engines/eevee/shaders/eevee_depth_of_field_tiles_flatten_frag.glsl
# source/blender/draw/engines/eevee/shaders/effect_dof_bokeh_frag.glsl
# source/blender/draw/engines/eevee/shaders/effect_dof_dilate_tiles_frag.glsl
# source/blender/draw/engines/eevee/shaders/effect_dof_gather_frag.glsl
# source/blender/draw/engines/eevee/shaders/effect_dof_lib.glsl
# source/blender/draw/engines/eevee/shaders/effect_dof_reduce_frag.glsl
# source/blender/draw/engines/eevee/shaders/effect_dof_resolve_frag.glsl
# source/blender/draw/engines/eevee/shaders/effect_dof_setup_frag.glsl
# source/blender/draw/engines/eevee/shaders/effect_reflection_resolve_frag.glsl
# source/blender/draw/engines/eevee/shaders/effect_reflection_trace_frag.glsl
# source/blender/draw/engines/eevee/shaders/effect_subsurface_frag.glsl
# source/blender/draw/engines/eevee/shaders/effect_temporal_aa.glsl
# source/blender/draw/engines/eevee/shaders/effect_translucency_frag.glsl
# source/blender/draw/engines/eevee/shaders/lightprobe_cube_display_vert.glsl
# source/blender/draw/engines/eevee/shaders/lightprobe_lib.glsl
# source/blender/draw/engines/eevee/shaders/lights_lib.glsl
# source/blender/draw/engines/eevee/shaders/random_lib.glsl
# source/blender/draw/engines/eevee/shaders/raytrace_lib.glsl
# source/blender/draw/engines/eevee/shaders/ssr_lib.glsl
# source/blender/draw/engines/eevee/shaders/surface_lib.glsl
# source/blender/draw/engines/eevee/shaders/volumetric_geom.glsl
# source/blender/draw/engines/eevee/shaders/volumetric_lib.glsl
# source/blender/draw/intern/draw_manager_shader.c
# source/blender/draw/intern/shaders/common_math_lib.glsl
# source/blender/gpu/CMakeLists.txt
# source/blender/gpu/intern/gpu_codegen.c
# source/blender/gpu/intern/gpu_shader.cc
# source/blender/gpu/shaders/material/gpu_shader_material_geometry.glsl
# source/blender/gpu/shaders/material/gpu_shader_material_principled.glsl
# source/blender/gpu/shaders/material/gpu_shader_material_subsurface_scattering.glsl
# source/blender/gpu/shaders/material/gpu_shader_material_world_normals.glsl
# source/blender/nodes/shader/nodes/node_shader_output_aov.c

DRW: Move buffer & temp textures & framebuffer management to DrawManager

This is a necessary step for EEVEE's new arch. This moves more data
to the draw manager. This makes it easier to have the render or draw
engines manage their own data.

This makes more sense and cleans-up what the GPUViewport holds

Also rewrites the Texture pool manager to be in C++.

This also move the DefaultFramebuffer/TextureList and the engine related
data to a new `DRWViewData` struct. This struct manages the per view
(as in stereo view) engine data.

There is a bit of cleanup in the way the draw manager is setup.
We now use a temporary DRWData instead of creating a dummy viewport.

Differential Revision: https://developer.blender.org/D11966

EEVEE: GBuffer: Change layout

This change the gbuffer layout to use more of the hardware to converting
data back and forth. Normals are encoded as two 16 bits components and
colors as R11G11B10F format.

This was motivated by the need of better quality normals. The issue is
that this increase the GBuffer size consequently. In order to balance
this we chose to merge the refraction and Diffuse/SSS data to use the
same buffer. This means we need to stochastically chose one of these
layers (so noise appear). Given that Glass BSDFs are rarely mixed
with Diffuse BSDFs, we think this is a good tradeoff.

GPUFramebuffer: Bump maximum color attachement to 8

This is needed for EEVEE's new deferred render pipeline.

GPU: Shader: Add debug context line count

This gives more detail, when the error line is misleading.

EEVEE: Fix crash caused by transparent material without prepass

GPUMaterial: Fix issue with displacement tree and partial derivatives

GPUNodeTree: Fix issue with weight tree inversion and displacement

Displacement tree was also being tagged for copy and caused issue.

EEVEE: Hair: Add back shaded hair support

Same implementation as before but it is less intrusive towards the
shading Node glsl code.

Hair shaders also now supports displacement.

DRW: Fix crash in deferred compilation