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This commit add mipmaps, but for now, mipmaps are generated on the gpu
at runtime. We should generate them in advance.
- added mipmaps for the hardware renderer
- renamed stb_image.c to stb_image.cpp
- add compiler flag to stb_image.cpp to prevent warning
- added pipe notation for various objects to have all clipping functions
be left to right. We need this for the time being because dot notation
would considerably complicate the current implementation
- small improvements
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- unified terminal and graphical software renderer shaders
- added vertex shaders for software renderers
- removed VertexData
- moved shaders from frame buffers to their own class
- added FrameBufferConcept and ShadersConcept
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There is still a lot of work needed to refactor it properly.
- use the Sutherland–Hodgman algorithm, with some minor changes
- made clipping more general, allowing clipping of any coordinate,
before and after division by w
- compute the z coordinate only at the fragment stage instead of each
time clipping creates / moves a vertex, in addition to the fragment
stage
- added VectorCoords to choose at compile-time different coordinates
based on a template argument
- added transpose struct to allow shuffling of vectors coordinates
- added math::utils::lerp which interpolate linearly a float
- added Vector{2,3,4}::map() which maps a vector from one range to
another
- added template parameter to DerivedVertex (and therefore
TriangleDerived) to allow choosing which dimension to use
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- removed "using" directive in .hpp
- reverse order of arguments for quaternion rotation, i.e. q.rot(v)
instead of v.rot(q), where q is a quaterinon and v a vector
- pass the inverse of the view matrix to render_and_present_frame, to
allow light calculation in shaders (we used to just pass the matrix of
the quaternion of the transformation, i.e. discard scaling and
translations)
- added another mesh and texture (viking_room) for testing purposes
- added transparent background option
- added Quaternion::look_towards(), which is the equivalent of
Matrix4::look_at() but only for rotations
- various improvement to .obj parsing
- load texture coordinates from .obj file
- merged duplicate vertices in Mesh::linearize_indices()
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- fixed aspect ratio being the inverse of what it's supposed to be
- use std::chrono::high_resolution_clock instead of system_clock
- convert ellapsed time to float representing seconds
- renamed engine::math::Matrix4::projection to perspective
- use [0,1] instead of [-1,1] for the range of z values, to be aligned
with vulkan
- added engine::math::Matrix4::{look_at,transpose}
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- cleaned up the computation of the camera's matrix
- changed VertexData to being a struct which transmit data between the "vertex shader" and the "fragment shader"
- started working on keyboard and mouse controls
- added fov (field of view)
- changed quaternion to euler angles conversion, from zyx to zxy
- fixed computations of z coordinates in triangle rendering
- improved naming in the triangle rasterizer
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- added quaternions and rewrote all rotations to use them
- added transforms to put all object transforms in a single place
- added Wavefront .obj file parser
- removed frame buffer's abstract class
- improved vectors, matrices, triangles, vertices and vertices data by putting all code in header file
- added vector's operations
- changed from NULL to nullptr
- miscellaneous improvements
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- In the context of mesh definition, splited
indices into vertex index, normal index and
vertex data index to be able to specify
different normals and vertex data for
different faces using the same vertex
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- Added renderer to unify frame buffers
- Added FrameBuffer class as a parent for frame buffers' classes
- Improved formatting in Makefile.am
- Added const modifier in Matrix4's methods
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