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Merge pull request #70214 from Ansraer/speed-maybe

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[4.x] Use depth prepass to increase opaque render performance
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Rémi Verschelde 2022-12-23 23:43:50 +01:00
commit 2e07477751
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GPG key ID: C3336907360768E1
1 changed files with 10 additions and 1 deletions
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11
servers/rendering/renderer_rd/forward_clustered/scene_shader_forward_clustered.cpp
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@ -256,6 +256,7 @@ void SceneShaderForwardClustered::ShaderData::set_code(const String &p_code) {
depth_stencil_state.depth_compare_operator = RD::COMPARE_OP_LESS_OR_EQUAL; depth_stencil_state.depth_compare_operator = RD::COMPARE_OP_LESS_OR_EQUAL;
depth_stencil_state.enable_depth_write = depth_draw != DEPTH_DRAW_DISABLED ? true : false; depth_stencil_state.enable_depth_write = depth_draw != DEPTH_DRAW_DISABLED ? true : false;
} }
bool depth_pre_pass_enabled = bool(GLOBAL_GET("rendering/driver/depth_prepass/enable"));
for (int i = 0; i < CULL_VARIANT_MAX; i++) { for (int i = 0; i < CULL_VARIANT_MAX; i++) {
RD::PolygonCullMode cull_mode_rd_table[CULL_VARIANT_MAX][3] = { RD::PolygonCullMode cull_mode_rd_table[CULL_VARIANT_MAX][3] = {
@ -307,8 +308,16 @@ void SceneShaderForwardClustered::ShaderData::set_code(const String &p_code) {
continue; continue;
} }
RD::PipelineColorBlendState blend_state;
RD::PipelineDepthStencilState depth_stencil = depth_stencil_state; RD::PipelineDepthStencilState depth_stencil = depth_stencil_state;
if (depth_pre_pass_enabled && casts_shadows()) {
// We already have a depth from the depth pre-pass, there is no need to write it again.
// In addition we can use COMPARE_OP_EQUAL instead of COMPARE_OP_LESS_OR_EQUAL.
// This way we can use the early depth test to discard transparent fragments before the fragment shader even starts.
depth_stencil.depth_compare_operator = RD::COMPARE_OP_EQUAL;
depth_stencil.enable_depth_write = false;
}
RD::PipelineColorBlendState blend_state;
RD::PipelineMultisampleState multisample_state; RD::PipelineMultisampleState multisample_state;
int shader_flags = 0; int shader_flags = 0;