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Code Issues 150 Wiki Activity

Cull and draw the sleepers of tracks on the GPU with the instances

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Hirek
2026-10-18 03:18:26 +02:00
parent f4b516eeb8
commit bc4df5567f
10 changed files with 293 additions and 48 deletions
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1
gl/glsl_common.cpp
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@@ -28,6 +28,7 @@ void gl::glsl_common_setup()
"#define INSTANCE_COMMAND_GROUP_SIZE " + std::to_string(INSTANCE_COMMAND_GROUP_SIZE) + "\n" +
"#define HIZ_GROUP_SIZE " + std::to_string(HIZ_GROUP_SIZE) + "\n" +
"#define INSTANCE_COUNTER_HEADER " + std::to_string(INSTANCE_COUNTER_HEADER) + "\n" +
"#define INSTANCE_JOB_SLEEPERS " + std::to_string(INSTANCE_JOB_SLEEPERS) + "U\n" +
"#define LIGHT_SSBO_BINDING " + std::to_string(LIGHT_SSBO_BINDING) + "\n" +
"#define CLUSTER_GRID_X " + std::to_string(CLUSTER_GRID_X) + "\n" +
"#define CLUSTER_GRID_Y " + std::to_string(CLUSTER_GRID_Y) + "\n" +

12
gl/ubo.h
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@@ -466,7 +466,7 @@ namespace gl
// culling of model instances in compute passes (instance_cull.comp, instance_cull_offsets.comp). binding points of
// the shader storage blocks, apart from the ones bound for the shading so the passes don't disturb them
const GLuint INSTANCE_RECORD_SSBO_BINDING = 9; // scene::basic_cell::instance_record of the queued buckets
const GLuint INSTANCE_JOB_SSBO_BINDING = 10; // instance_cull_job, one per queued bucket
const GLuint INSTANCE_JOB_SSBO_BINDING = 10; // instance_cull_job, one per queued bucket (or track with sleepers)
const GLuint INSTANCE_GROUP_SSBO_BINDING = 11; // instance_cull_group, one per model and skins
const GLuint INSTANCE_LOD_SSBO_BINDING = 12; // sorted lod bounds (squared distances) of the groups
const GLuint INSTANCE_COUNTER_SSBO_BINDING = 13; // header, then count[entries], cursor[entries] and first[entries]
@@ -496,7 +496,15 @@ namespace gl
uint32_t count; // records of the bucket
uint32_t group;
uint32_t candidatestart; // records of the jobs before this one
uint32_t pad[2];
uint32_t flags; // instance_cull_job_flags
uint32_t pad;
};
enum instance_cull_job_flags : uint32_t
{
// the sleepers of a track (opengl46_renderer::Render_Sleepers()): the lod goes by the plain distance from the camera of
// the pass, without the range and size tests of the model instances (the range of the whole track is tested on the cpu)
INSTANCE_JOB_SLEEPERS = 1u
};
static_assert(sizeof(instance_cull_job) == 48, "bad size of instance_cull_job");