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Revert "ifcviewer: MDI compaction via glMultiDrawElementsIndirectCount"

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This reverts commit d5b7b87ba17c90008cf0673c838ce8431ad85e36.
This commit is contained in:
Dion Moult
2026-04-17 18:34:01 +10:00
parent 4bedb40d8a
commit fc89ffeb19
3 changed files with 40 additions and 202 deletions
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src/ifcviewer/ViewportWindow.h
-9
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@@ -126,14 +126,6 @@ struct ModelGpuData {
uint32_t gpu_mesh_command_count = 0;
uint32_t gpu_forward_command_count = 0;
// MDI compaction: non-empty commands are packed here by the pack shader.
// Same capacity as gpu_indirect_buffer; fwd at [0..2M), rev at [2M..4M).
// gpu_draw_count_buffer holds 2 × uint32: [fwd_count, rev_count], read
// by glMultiDrawElementsIndirectCount as GL_PARAMETER_BUFFER.
GLuint gpu_compacted_buffer = 0;
size_t gpu_compacted_capacity = 0;
GLuint gpu_draw_count_buffer = 0;
// Dynamic visible-instance index buffer (std430, binding = 1).
// Re-uploaded each frame from visible_flat_.
GLuint visible_ssbo = 0;
@@ -311,7 +303,6 @@ private:
// Phase 2: same + HiZ test → final survivors for color pass
GLuint cull_reset_program_ = 0;
GLuint cull_compact_program_ = 0;
GLuint cull_pack_program_ = 0;
// Depth-only program for the HiZ depth pre-pass — same vertex shader
// as main_program_, trivial fragment shader.