mirror of
https://github.com/0ldsk00l/nestopia.git
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139 lines
4.6 KiB
Text
139 lines
4.6 KiB
Text
nes_ntsc Change Log
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-------------------
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nes_ntsc 0.2.2
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--------------
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- Added ability to use a custom RGB palette in place of the NES color
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circuitry (with the option of being before color emphasis). When using
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this palette with otherwise default settings, RGB colors appear on
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screen exactly as in custom palette.
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- Moved configuration options to nes_ntsc_config.h, making it easier to
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manage
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- Made color emphasis support configurable in nes_ntsc_config.h (off by
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default). Previously, there were separate functions; now there is only
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one set of functions and whether they support color emphasis is
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configurable. If color emphasis support is OFF, then nes_ntsc_init() and
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related behave as before, and the nes_ntsc_init_emph() functionality is
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not available. If color emphasis support is ON, then nes_ntsc_init() and
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related behave as nes_ntsc_init_emph() and related did before, and
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nes_ntsc_init() and related functionality is not available (so you would
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need to update any code that uses palette_out and expects only 64 colors
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to be written; see the end of demo.c for example).
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- Removed hue_warping for now, due to its obscurity
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- Greatly clarified and improved demo to read any uncompressed BMP image
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and write filtered image when done
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- Improved gamma to be properly applied to each RGB channel, and changed
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default to compensate for difference between PC monitor and TV gamma
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- Improved contrast to be properly applied to each RGB channel rather
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than just luma
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- Improved floating point calculations in library to be more stable and
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not need double precision, which was causing problems with the sharpness
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control on Windows when the DirectX libraries changed the FPU to single
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precision mode
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- Eliminated slight artifacts still visible when using the RGB preset
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with field merging off
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- Added extern "C" to header, allowing use in C++ without having to
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rename the source file
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- Made internal changes to factor out code common from all my NTSC
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filter libraries, greatly simplifying things for me
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nes_ntsc 0.2.0
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--------------
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- Significantly improved NTSC signal processing to give clearer image
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and better sharpness control
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- Added parameters for gamma, resolution, color bleed, artifacts, and
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color fringing
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- Added presets for composite video, S-video, RGB, and monochrome
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- Added NES_NTSC_OUT_WIDTH() and NES_NTSC_IN_WIDTH() for calculating
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input/output widths
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- Improved default blitter to support emphasis and allow specification
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of RGB output bit depth
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- Improved demo with more controls and interpolation and darkening of
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scanlines rather than duplicating them
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- Improved documentation
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- Interface changes: nes_ntsc_blit() now takes *input* size rather than
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output size. NES_NTSC_BEGIN_ROW now takes two additional pixels.
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- Deprecated: nes_ntsc_x_in/out_width, NES_NTSC_RGBnn_OUT, and
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NES_NTSC_RAW_OUT
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nes_ntsc 0.1.7
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--------------
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- Fixed color emphasis to affect xD colors instead of incorrectly
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leaving them as always gray
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- Added ability to generate a 64- or 512-color RGB palette for use when
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full NTSC emulation isn't desired
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- Documented more accurate burst_phase handling and included three test
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ROMs for verifying proper implementation
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- Moved color emphasis support to new nes_ntsc_emph_t structure,
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eliminating the ugly global NES_NTSC_DISABLE_EMPHASIS configuration
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macro
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- Extended demo to use optional Sony decoder matrix and write standard
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192-byte NES .PAL file using current settings
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- Improved documentation slightly
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- Lowered maximum saturation to avoid overflow of blue when blue color
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emphasis is enabled
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nes_ntsc 0.1.6
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--------------
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- Cleaned up hue, decoder matrix, and hue warping to do transformations
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in the proper order and direction
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nes_ntsc 0.1.5
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--------------
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- Added support for color emphasis/tint bits (can be turned off to
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reduce memory usage)
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- Added ability to specify optional decoder matrix
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- Improved documentation
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- Added constants for overscan borders
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nes_ntsc 0.1.0
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--------------
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- First official version
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- Completely rewrote algorithm to do all NTSC signal processing at
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initialization time, putting results into a table for use during
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blitting. This increased performance by over 300% and allowed many
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improvements in quality and image options.
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- Eliminated multiple output formats and options. Now you can define a
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custom blitter for this.
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- Added sharpness and "hue warping" controls
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- Added option to merge even and odd artifacts to reduce flicker when
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host monitor's refresh rate doesn't match emulator's frame rate.
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- Added built-in horizontal rescaling. I never realized the old one was
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way too wide.
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