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Use opaque rendering pipeline for alpha hash materials

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This has several benefits:

- Transparency sorting issues inherent to alpha blending no longer occur.
- Alpha hash materials can now cast shadows (also works with
  GeometryInstance3D Transparency's property for alpha hash materials).
- Higher performance.
This commit is contained in:
Hugo Locurcio 2022-06-10 11:09:17 +02:00
parent efcf0d88e4
commit 5d9e996f68
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GPG Key ID: 39E8F8BE30B0A49C
3 changed files with 9 additions and 0 deletions
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3
drivers/gles3/storage/material_storage.cpp
View File

@ -3234,6 +3234,9 @@ void SceneShaderData::set_code(const String &p_code) {
actions.usage_flag_pointers["ALPHA"] = &uses_alpha;
actions.usage_flag_pointers["ALPHA_SCISSOR_THRESHOLD"] = &uses_alpha_clip;
// Use alpha clip pipeline for alpha hash/dither.
// This prevents sorting issues inherent to alpha blending and allows such materials to cast shadows.
actions.usage_flag_pointers["ALPHA_HASH_SCALE"] = &uses_alpha_clip;
actions.render_mode_flags["depth_prepass_alpha"] = &uses_depth_pre_pass;
actions.usage_flag_pointers["SSS_STRENGTH"] = &uses_sss;

3
servers/rendering/renderer_rd/forward_clustered/scene_shader_forward_clustered.cpp
View File

@ -111,6 +111,9 @@ void SceneShaderForwardClustered::ShaderData::set_code(const String &p_code) {
actions.usage_flag_pointers["ALPHA"] = &uses_alpha;
actions.usage_flag_pointers["ALPHA_SCISSOR_THRESHOLD"] = &uses_alpha_clip;
// Use alpha clip pipeline for alpha hash/dither.
// This prevents sorting issues inherent to alpha blending and allows such materials to cast shadows.
actions.usage_flag_pointers["ALPHA_HASH_SCALE"] = &uses_alpha_clip;
actions.render_mode_flags["depth_prepass_alpha"] = &uses_depth_pre_pass;
actions.usage_flag_pointers["SSS_STRENGTH"] = &uses_sss;

3
servers/rendering/renderer_rd/forward_mobile/scene_shader_forward_mobile.cpp
View File

@ -112,6 +112,9 @@ void SceneShaderForwardMobile::ShaderData::set_code(const String &p_code) {
actions.usage_flag_pointers["ALPHA"] = &uses_alpha;
actions.usage_flag_pointers["ALPHA_SCISSOR_THRESHOLD"] = &uses_alpha_clip;
// Use alpha clip pipeline for alpha hash/dither.
// This prevents sorting issues inherent to alpha blending and allows such materials to cast shadows.
actions.usage_flag_pointers["ALPHA_HASH_SCALE"] = &uses_alpha_clip;
actions.render_mode_flags["depth_prepass_alpha"] = &uses_depth_pre_pass;
// actions.usage_flag_pointers["SSS_STRENGTH"] = &uses_sss;