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37 lines
2.1 KiB
Plaintext
37 lines
2.1 KiB
Plaintext
This is a modified version of TinyGL 0.4 intended for use with ScummVM.
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The changes made from the original version of TinyGL 0.4 are:
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* Changed file extensions from *.c to *.cpp to compile as C++.
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* Included only files needed by ScummVM.
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* Changed include paths in source files.
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* Added needed type casts and fixes for proper compile.
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* Added 't/T' prefix to prevent OpenGL name clashes.
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* Added light shading texture mapping mode.
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* Removed unneeded code.
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* Introduced second 32-bit z-buffer for 3d objects only,
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and kept 16-bit only for static z-buffer bitmaps.
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* Added support for reading in RGB/BGR-textures, although the only internal format is still RGB565
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* Added TGL_BGR/TGL_RGB definitions to gl.h, verifying against SDL_opengl.h that the values are ok.
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* Added additional functions missing, like glColor4ub. (To make the code similar with the GL-code we use)
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* Added simplistic glColorMask implementation, on/off.
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* Applied some C++-isms:
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- "for(int i = 0;" instead of "int i; for (i = 0;",
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- struct structName instead of typedef struct {} structName;
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- pass-by-const-reference instead of by-value when possible
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* Changed the math-functions to use const-pointers if possible.
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* Reformatted the source to use the same code-formatting conventions as the rest of ScummVM
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(indentation-wise, not variable-naming wise)
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* Refactored all the maths code in a C++ fashion, removed some unused functions.
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* Heavily refactored the triangle and line drawing routines
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* Renamed ZBuffer into FrameBuffer and moved all the external C functions as member functions.
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* Added implementation of tglBlendFunc and support for 8-bit alpha.
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* Added implementation of tglAlphaTestFunc.
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* Added implementation of tglDepthFunc.
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* Added an API that enables the user to perform color and z buffer blitting.
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* Implemented a system that enables to defer draw calls.
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* Implemented dirty rectangle system that prevents redrawing of unchanged region of the screen.
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* Added implementation of tglDrawElements.
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* Added stencil buffer implementation.
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For more information refer to log changes in github: https://github.com/scummvm/scummvm
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