Note: Currently version still have lots of fireflies after applying normal map. And those fireflies are mostly coming from the nee sky. Need to double check the sky cdf and ray intersection.
Changed the `hit_result_t` structure to rename a parameter in `RayIntersection.h`.
Removed the `normal` field from the `path_output` structure in `Common.h`.
Added new fields `screen_size`, `camera_position`, and `camera_direction` in `Material.h`.
Changed the `mipmap_t` structure in `Texture.h` to include a `max_mip` field and modify the `data` field.
Changed the `texture_load` function in `Texture.c` to include a `mipmap` parameter and improve texture data handling.
Changed the `path_trace` function in `PathTracing.c` to update the `shading_context_t` structure and ray creation.
Changed the `evaluate_bsdf_directional` function in `LightEvaluation.c` to modify angular radius calculation.
Changed the `sky_create_hdr_sky` and `evaluate_bsdf_hdr_sky` functions in `SkyLight.c` to enhance texture sampling.
Changed the `get_surface_data` function in `SimpleLit.c` to incorporate camera distance and view direction in calculations.
Changed the `texture_get_pixel` function in `Texture.c` to improve pixel data retrieval.
Changed the `warp_uv` function to use a `vec2s` structure for UV coordinates.
Changed the `texture_sample` function to include additional parameters for improved sampling accuracy.
Changed the `scene_setup` function in `main.c` to adjust sun light intensity and HDRI texture loading.
Added:
- AOV support for normals, albedo, and depth marked as completed.
- New function `normal_unpack` in `BSDF.h`.
- New field `esp` in `ray_t` structure in `RayIntersection.h`.
Changed:
- Updated `normal_ts_to_ws` to accept an additional parameter.
- Refactored `weight_nee_light` for clarity.
- Modified `RAY_EPSILON` for improved precision.
- Updated `path_output` structure to include a `normal` field.
- Normalized unpacked normal vector in `normal_unpack` function.
- Updated `path_trace` to use closest hit ray intersection.
- Updated `render_aov` to utilize closest hit logic.
- Modified `ray_create` to initialize `esp` based on ray origin.
- Improved accuracy in `offset_ray_origin` calculations.
- Updated ray intersection logic in `ray_intersect_triangle` and `ray_intersect_aabb` to include epsilon checks.
- Updated `evaluate_bsdf_directional` and `evaluate_bsdf_const_sky` for shadow rays.
- Adjusted `sample_bsdf_simple_lit` for incoming light direction calculations.
- Enhanced `render_pixel` to manage AOV flags effectively.
- Changed camera rotation and light intensity in `scene_setup`.
- Simplified texture loading by removing unnecessary sRGB conversion.
Modified:
- Several binary image files have been updated.
Added support for rendering Arbitrary Output Variables (AOVs) for detailed outputs like beauty, albedo, normal, depth, and position.
Added new functions `render_aov` and `accumulate_aov` for AOV data management during rendering.
Added AOV rendering capabilities to the `SimpleLit` material with specific functions.
Changed the material system to include new function pointers for AOV rendering.
Changed the renderer to initialize and update AOV targets during the rendering process.
Changed the main rendering loop to handle AOVs and update render targets accordingly.
Fixed various minor issues, including function signature updates, variable name changes, and improved error handling for memory allocations.
Added support for HDR sky lighting, including sampling environment maps with a hierarchical CDF.
Added new utility functions for handling HDR sky data, including memory management and sampling functions.
Added functions to improve texture handling, including pixel data retrieval and texture coordinate management.
Changed the path tracing algorithm to enhance light evaluation from HDR skies and adjust light contribution calculations.
Changed BSDF sampling functions to utilize constants from Common.h for better readability.
Changed the main application logic to load HDR textures and configure the scene with improved lighting settings.
Refactored ray intersection logic to enhance accuracy and performance in triangle intersections.
Adjusted the sample count in the rendering configuration to optimize performance.
Updated the README.md to document new features and example renders.
Added three binary files: `golden_gate_hills_1k.hdr`, `rogland_sunset_1k.hdr`, and `studio_small_03_1k.hdr`.
Added a new inline function `weight_nee_light` in `BSDF.h` to compute the weighted contribution of light based on the next event estimation (NEE).
Added a new function pointer type `sky_free_f` in `Light.h` for freeing sky light data.
Added a new structure `hdr_sky_data_t` in `SkyLight.h` to hold HDR sky data, including texture and intensity.
Changed the `RAY_EPSILON` definition in `Common.h` to a new value.
Changed the `light_collection_free` function in `Light.h` to include freeing sky light data if it exists.
Changed the `sky_create_hdr_sky` function in `SkyLight.h` to initialize HDR sky data and compute marginal and conditional distributions.
Changed the `texture_load` function in `Texture.h` to accept a `stride` parameter for different texture formats.
Changed the `evaluate_bsdf_directional` function in `LightEvaluation.c` to handle light intensity checks.
Changed the `evaluate_bsdf_const_sky` function in `SkyLight.c` to use a pointer for sky data and added checks for intensity.
Removed TODO comments related to handling triangle and material removal in `Triangle.h` and `Light.h`.
Removed the old `weight_sky_light` function in `SkyLight.h` and replaced it with the new `weight_nee_light` function.
Updated the `scene_setup` function in `main.c` to change camera position and light direction, and to load HDR textures.
Increased the sample count in the rendering configuration in `main.c` for better quality rendering.
Added a new enum `path_state` and a struct `path_output` in `Common.h` to manage path tracing states and outputs.
Added a new `simple_lit_render_loop` function in `SimpleLit.c` to handle rendering for simple lit materials, integrating light contributions and BSDF evaluations.
Changed the function signatures in `Light.h` to use `path_output` instead of `vec3s` for BSDF evaluations.
Changed the `evaluate_bsdf_directional` function in `LightEvaluation.h` to return `path_output` instead of `vec3s`.
Changed the `evaluate_bsdf_sky` function in `LightEvaluation.h` to return `path_output` and updated its implementation accordingly.
Changed the function signature of `evaluate_bsdf_const_sky` in `SkyLight.h` to return `path_output` and modified its implementation to match.
Removed several old BSDF-related functions in `Material.c` that are no longer needed due to the new structure.
Updated the `material_create` function in `Material.c` to accept the new render loop function pointer.
Updated the `path_trace` function in `PathTracing.c` to utilize the new `path_output` structure for managing light contributions and state transitions during path tracing.
Updated the `evaluate_bsdf_directional` function in `LightEvaluation.c` to return `path_output` and adjusted its internal logic to populate the output structure.
Updated the `evaluate_bsdf_const_sky` function in `SkyLight.c` to return `path_output` and modified its logic to handle light contributions correctly.
Updated the intensity of the sky light to `0.0f` during scene setup in `main.c`, effectively disabling it.
Added a new function `blinn_phong_specular_exponent_to_roughness` in `BSDF.h` to convert a specular exponent to roughness.
Added a `textures` member to the `shading_context_t` structure in `Material.h` for passing texture information during shading.
Added a new member `textures` in the `light_shading_context_t` structure in `Light.h` to hold texture information.
Added inline functions in `Texture.h` for handling texture entities, including `invalid_texture_entity`, `is_texture_entity_valid`, and `get_texture`.
Changed the texture-related members in `simple_lit_properties_t` in `SimpleLit.h` from pointers to `texture_entity_t` to better manage texture entities.
Changed the `sample_material_bsdf` and `sample_material_bsdf_pdf` functions in `Material.h` to accept a `shading_context_t` instead of individual parameters.
Changed the `mesh_load` function in `Mesh.c` to use the new roughness calculation and texture entity handling.
Changed the `path_trace` function in `PathTracing.c` to use the new structure and functions for handling materials and textures.
Refactored the `sample_material_bsdf` and `sample_material_bsdf_pdf` functions in `Material.c` to utilize the new `shading_context_t` structure.
Updated the `material_collection_init` function in `Material.h` to reflect changes in the material sampling functions.
Updated the `evaluate_bsdf_directional` and `evaluate_bsdf_const_sky` functions to use the new shading context structure.
Adjusted the `simple_lit_data_default` function in `SimpleLit.c` to work with the new texture handling approach.
Added texture entity handling in `Texture.c` for managing invalid texture entities.
Changed CMakeLists.txt to set the C standard to C11.
Added multiple binary image files for new visual assets.
Added several new image files to enhance rendering capabilities.
Changed stb_image.h to improve support for various image formats.
Changed ray tracing engine to enhance ray creation and intersection.
Changed triangle structure to use a vertex array for better attribute handling.
Changed scene initialization to accommodate new texture management.
Added LICENSE file with MIT License and copyright notice.
Added preview.png binary file for project assets.
Changed CMakeLists.txt to include asset copying command.
Changed mesh loading in Mesh.c to support smooth normals.
Changed ray origin biasing in PathTracing.c and shadow rays.
Changed ray-triangle intersection logic in RayIntersection.c.
Changed ray_intersect_bvh_count function in Debug.c to static.
Changed rendering functions in Scene.c with TODO for optimization.
Updated README.md with project description and build instructions.
Updated window dimensions in main.c for testing purposes.
Added new files for BVH, AABB, and Debug functionalities.
Added new utility functions in Common.h.
Added gamma correction function in PostProcessing.h.
Changed the return type of path_trace to vec4s for alpha blending.
Changed BSDF function signatures to include sample index and bounce.
Changed the BSDF.h to replace inline functions with declarations.
Changed the Light and SkyLight evaluation functions to include throughput and sample index.
Changed the sphere creation function in GeometryUtilities.h for better quality.
Changed the scene structure to include a BVH tree for improved ray intersection.
Changed the scene initialization parameters for better performance.
Created new Debug functions for ray intersection counting.
Created new functions for triangle collection management in Triangle.c.
Improved pixel updating logic in Window.c.
Improved ray intersection performance with new BVH implementation.
Removed unused includes from Common.h.
Removed old library linking methods in CMakeLists.txt.
Changed several function signatures across multiple files to remove the `const` qualifier from parameters of type `vec3s` for improved flexibility.
Changed `material_collection_create` to `material_collection_init` for better initialization handling.
Changed `scene_create` to `scene_init` to return a boolean indicating success or failure.
Changed `render_target_create` to `render_target_init` for consistent initialization practices.
Changed `window_create` to remove `const` from its parameters for consistency.
Changed `evaluate_bsdf_directional` and `evaluate_bsdf_const_sky` to remove `const` from their parameters.
Changed `sample_bsdf_simple_lit` and `sample_bsdf_pdf_simple_lit` to remove `const` from the `normal` parameter.
Changed `scene_render` to take a pointer to `render_target_t` instead of returning it directly.
Updated `main.c` to reflect new initialization functions for better memory management.
Added new function signatures in `assimp-vc143-mt.lib` for improved logging, parsing, and vector operations.
Added new metadata and configuration information in `assimp-vc143-mt.dll` for versioning and licensing compliance.
Added Sobol sequence generation in `Sobol.c` for quasi-random sampling.
Added window message handling in `Window.c` for rendering graphics.
Added ray-triangle intersection tests in `RayIntersection.c` for collision detection.
Added functions for loading mesh data in `Mesh.c` to support 3D model import.
Added functions for managing triangle collections in `Triangle.c` to enhance geometric data handling.
Added light evaluation functions in `LightEvaluation.c` and `SkyLight.c` for realistic rendering.
Added sampling and evaluation functions for simple lit materials in `SimpleLit.c`.
Changed various header files to include copyright and licensing information.
Changed existing functions in multiple files to improve performance and clarity.
Removed unused code in several files to streamline the library.
