occt/Shaders at e002f1ce5bc1aaff13671ce20296209f1d1e4cc4 - occt

mirror of https://git.dev.opencascade.org/repos/occt.git synced 2025-06-10 11:34:06 +03:00

History

dbp e2da917a1c 0025703: Visualization - Decrease number of samplers used in ray-tracing mode

This patch eliminates 3 samplers used in ray-tracing mode:

//! Texture buffer of data records of bottom-level BVH nodes.
Handle(OpenGl_TextureBufferArb) myObjectNodeInfoTexture;
//! Texture buffer of minimum points of bottom-level BVH nodes.
Handle(OpenGl_TextureBufferArb) myObjectMinPointTexture;
//! Texture buffer of maximum points of bottom-level BVH nodes.
Handle(OpenGl_TextureBufferArb) myObjectMaxPointTexture;

Serialized data contained in corresponding texture buffers were added to global scene buffers:

//! Texture buffer of data records of high-level BVH nodes.
Handle(OpenGl_TextureBufferArb) mySceneNodeInfoTexture;
 //! Texture buffer of minimum points of high-level BVH nodes.
Handle(OpenGl_TextureBufferArb) mySceneMinPointTexture;
//! Texture buffer of maximum points of high-level BVH nodes.
Handle(OpenGl_TextureBufferArb) mySceneMaxPointTexture;

This modifications leads also to small performance improvement (~2%) due to higher texture cache efficiency. Some modifications in traversal function (GLSL code) also improve performance (~3%).

2015-01-22 16:47:52 +03:00

Declarations.glsl

0025282: Visualization, OpenGl_PrimitiveArray - provide built-in GLSL programs as alternative to FFP

2014-10-02 14:29:19 +04:00

DeclarationsImpl.glsl

0024624: Lost word in license statement in source files

2014-02-20 16:15:17 +04:00

FILES

Update type of files

2013-11-14 21:19:34 +04:00

PhongShading.fs

0024872: Support of emission color in Phong shader and ray-tracing