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Vertex and attribute compression to reduce the size of the vertex format.

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This allows Godot to automatically compress meshes to save a lot of bandwidth.

In general, this requires no interaction from the user and should result in
no noticable quality loss.

This scheme is not backwards compatible, so we have provided an upgrade
mechanism, and a mesh versioning mechanism.

Existing meshes can still be used as a result, but users can get a
performance boost by reimporting assets.
This commit is contained in:
clayjohn
2023-08-29 21:04:32 +02:00
parent d31794c4a2
commit 51ed3aef63
59 changed files with 1752 additions and 670 deletions
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12
drivers/gles3/rasterizer_scene_gles3.cpp
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@@ -2908,6 +2908,18 @@ void RasterizerSceneGLES3::_render_list_template(RenderListParameters *p_params,
}
material_storage->shaders.scene_shader.version_set_uniform(SceneShaderGLES3::WORLD_TRANSFORM, world_transform, shader->version, instance_variant, spec_constants);
{
GLES3::Mesh::Surface *s = reinterpret_cast<GLES3::Mesh::Surface *>(surf->surface);
if (s->format & RS::ARRAY_FLAG_COMPRESS_ATTRIBUTES) {
material_storage->shaders.scene_shader.version_set_uniform(SceneShaderGLES3::COMPRESSED_AABB_POSITION, s->aabb.position, shader->version, instance_variant, spec_constants);
material_storage->shaders.scene_shader.version_set_uniform(SceneShaderGLES3::COMPRESSED_AABB_SIZE, s->aabb.size, shader->version, instance_variant, spec_constants);
material_storage->shaders.scene_shader.version_set_uniform(SceneShaderGLES3::UV_SCALE, s->uv_scale, shader->version, instance_variant, spec_constants);
} else {
material_storage->shaders.scene_shader.version_set_uniform(SceneShaderGLES3::COMPRESSED_AABB_POSITION, Vector3(0.0, 0.0, 0.0), shader->version, instance_variant, spec_constants);
material_storage->shaders.scene_shader.version_set_uniform(SceneShaderGLES3::COMPRESSED_AABB_SIZE, Vector3(1.0, 1.0, 1.0), shader->version, instance_variant, spec_constants);
material_storage->shaders.scene_shader.version_set_uniform(SceneShaderGLES3::UV_SCALE, Vector4(0.0, 0.0, 0.0, 0.0), shader->version, instance_variant, spec_constants);
}
}
// Can be index count or vertex count
uint32_t count = 0;