simvx.graphics.renderer.point_shadow_pass

Point and spot light shadow map rendering pass.

Point lights use a 6-face cubemap (rendered as 6 separate passes with different view matrices). Spot lights use a single 2D depth texture with a perspective projection matching the cone angle.

Shadow depth textures are registered in the bindless texture array so the forward fragment shader can sample them via integer index.

Module Contents

Classes

PointShadowPass

Renders depth from point/spot light POVs into shadow map textures.

Data

__all__
log
POINT_SHADOW_SIZE
SPOT_SHADOW_SIZE
DEPTH_FORMAT
COLOR_FORMAT

API

simvx.graphics.renderer.point_shadow_pass.__all__

[‘PointShadowPass’]

simvx.graphics.renderer.point_shadow_pass.log

‘getLogger(…)’

simvx.graphics.renderer.point_shadow_pass.POINT_SHADOW_SIZE

512

simvx.graphics.renderer.point_shadow_pass.SPOT_SHADOW_SIZE

1024

simvx.graphics.renderer.point_shadow_pass.DEPTH_FORMAT

None

simvx.graphics.renderer.point_shadow_pass.COLOR_FORMAT

None

class simvx.graphics.renderer.point_shadow_pass.PointShadowPass(engine: Any)

Renders depth from point/spot light POVs into shadow map textures.

Point lights: 6-face atlas (6 x POINT_SHADOW_SIZE side-by-side). Spot lights: Single 2D depth texture (SPOT_SHADOW_SIZE x SPOT_SHADOW_SIZE).

Uses a color attachment (R32_SFLOAT) to store linear distance from light, plus a depth attachment for correct Z-testing during rendering.

Initialization

setup(ssbo_layout: Any) → None

Initialize point and spot shadow map resources.

property point_shadow_texture_index: int

Bindless index of the point shadow atlas texture.

property spot_shadow_texture_index: int

Bindless index of the spot shadow depth texture.

render_point_shadow(cmd: Any, light_pos: numpy.ndarray, light_range: float, instances: list, ssbo_set: Any, mesh_registry: Any) → None

Render 6 cubemap faces for a point light shadow.

Each face is rendered to a horizontal slice of the point shadow atlas. Linear distance from light is written to the R32F color attachment.

render_spot_shadow(cmd: Any, light_pos: numpy.ndarray, light_dir: numpy.ndarray, fov: float, light_range: float, instances: list, ssbo_set: Any, mesh_registry: Any) → None

Render a single perspective shadow map for a spot light.

Args: light_pos: World-space position of the spot light. light_dir: Normalized direction the spot light points. fov: Outer cone angle in degrees (used as projection FOV). light_range: Maximum range of the spot light.

get_spot_vp_matrix(light_pos: numpy.ndarray, light_dir: numpy.ndarray, fov: float, light_range: float) → numpy.ndarray

Compute the VP matrix for a spot light (for fragment shader sampling).

cleanup() → None

Release all GPU resources.