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author Aaron Giles <aaron@aarongiles.com>2009-01-12 11:05:15 +0000
committer Aaron Giles <aaron@aarongiles.com>2009-01-12 11:05:15 +0000
commitac0abd17066f0b9c95a64430be86c451c6ae6f32 (patch)
tree4e30749b6d6d98a9a7f6621b2b809f231b1bf96c /.gitattributes
parentfa224bfe854958489065c8e5f7bfcd4590c40721 (diff)
Major drawgfx cleanup, global removal, and feature enhancements:
- Added built-in dirty tile tracking to the gfx_element. This removes the need for all drivers that had dynamically populated graphics to do their own dirty tracking. Tiles are marked dirty via the new function gfx_element_mark_dirty(). Any driver that needs access to the decoded data must call gfx_element_get_data() in order to ensure that the referenced tile is clean before proceeding. - In order to support dirty tracking, the gfx_element was enhanced to keep track of the original source pointer, so that it can go back and regenerate tiles on demand. For systems that set NULL for the region in the gfxdecode, they must use gfx_element_set_source() to specify a pointer to the raw data before drawing anything. - Changed allocgfx() to gfx_element_alloc(), and added parameters to specify the source data pointer, base color index, and total colors. Many drivers had to whack these values in after the fact, so this allowed for some minor additional cleanup. - Added a dirtyseq member to the gfx_element struct. This is incremented on each tile dirty, and can be used to sniff if something has changed. - Added logic in the tilemap engine to track which gfx_elements are used for a given tilemap, and automatically detect changes to the tiles so that drivers no longer have to explicitly invalidate the tilemap when tiles change. In the future, this may grow smarter to only invalidate the affected tiles, but for now it invalidates the entire tilemap. - Updated a number of drivers to remove their own dirty handling and leverage the new internal dirty marking. - Because the source data must always be present, updated the atarigen zwackery and mystwarr graphics handing code to support this. - Thanks to the dirty tracking, this actually allows all gfx decoding to happen on the fly instead of all at once up front. Since there was some concern that this would cause undesirable behavior due to decoding lots of tiles on the fly, it is controlled with a compile- time constant in mame.h (PREDECODE_GFX). Set this to 1 to get the old behavior back. - Moved decodechar() and decodegfx() to deprecat.h. All drivers in MAME have been updated to simply mark tiles dirty and let the rendering system decode them as needed, so these functions may go away in the future. - Rewrote entirely the rendering code in drawgfx. This code previously used extensive recursive #includes and tricks to build, and was very difficult to understand. The new code is based off of a set of macros defined in drawgfxm.h. These new macros separate the core rendering logic from the per-pixel operation, allowing the operation to be easily "plugged" into any of the renderers. These macros are also available to any driver that wants custom rendering behavior that is similar to existing core behavior, without needing to populate the core with esoteric one-off rendering behaviors. - Added a set of new functions for [p]drawgfx[zoom], one for each transparency type. The old [p]drawgfx[zoom] functions are still present, but now switch off the transparency type and call through to one of these new transparency-specific functions. The old functions are also now reduced to only supporting TRANSPARENCY_NONE, TRANSPARENCY_PEN, and TRANSPARENCY_PENS. All other rendering types must use the new functions. - All new rendering functions have extensive asserts to catch improper clipping rectangles and other common errors. - All new rendering functions automatically downgrade to optimized versions where appropriate. For example, calling drawgfx_transpen with an out-of-range pen automatically falls back to drawgfx_opaque. And drawgfxzoom_* with xscale=yscale=1.0 automatically falls back to drawgfx_*. And many other examples. In general, this relieves drivers from needing to make these sorts of decisions. - All new rendering functions have a consistent parameter order that is a bit different from the existing functions. The cliprect parameter is now specified immediately after the destination bitmap, to match the convention used throughout the rest of the system. The core parameters are followed by the scale parameters (for the zoom functions), and then followed by the priority parameters (for the pdrawgfx* functions), finally followed by any PIXEL_OP*-specific parameters (such as transparent pen, alpha, drawing tables, etc.) - Removed drawgfx_alpha_cache, alpha_set_level(), and the inline functions alpha_blend16() and alpha_blend32(). To render graphics with alpha, use the new [p]drawgfx[zoom]_alpha functions, which take an explicit alpha value. To render tilemaps with alpha, the TILEMAP_DRAW_ALPHA option now takes an explicit alpha parameter. And to do you own alpha blending, use the alpha_blend_r16() and alpha_blend_r32() functions, which take an explicit alpha. - Updated a number of drivers as a result of removing the implicit alpha in the drawgfx_alpha_cache. - Removed drawgfx_pen_table and TRANSPARENCY_PEN_TABLE. To achieve the same effect, build your own table and pass it to [p]drawgfx[zoom]_transtable, along with a pointer to the machine->shadow_table to use for shadows. Eventually machine->shadow_table is likely to go away, and drivers will need to fetch the shadow table from the palette directly. - Updated a number of drivers to remove use of drawgfx_pen_table. - Removed TRANSPARENCY_ALPHARANGE; it was only used by the psikyosh driver, so it is now moved locally into that driver and built using the macros in drawgfxm.h. - Removed TRANSPARENCY_PEN_RAW; to achieve the same effect, call the new [p]drawgfx[zoom]_transpen_raw() functions. Updated drivers to make this change. - Removed the unused mdrawgfx* functions entirely. - Added new function gfx_element_set_source_clip() to specify a source clipping rectangle for any element. This replaces the nasty hacks that were being used in bnstars, ms32, namcos86, and namcos1 to achieve similar behaviors. - Simplified the copyrozbitmap() functions to match the copybitmap() functions in having separate opaque and transparent versions. Also removed the 'priority' parameter which was only used by one driver, and moved that logic into a custom renderer built using macros in drawgfxm.h. Updated copyrozbitmap* to use the destbitmap, cliprect parameter ordering convention as well. - Simplified the draw_scanline*() functions to always render opaque. Only one driver was doing otherwise, and it now does its work internally (draw_scanline is dead-simple ever since we moved rotation to the OSD code; I almost just removed it entirely). Other changes: - Added a cliprect to the bitmap_t type, which describes the full bitmap. - Removed tilemap_set_pen_data_offset; unfortunately, this adds a random tile offset behind the scenes and goes against the dirty tile detection and invalidation. Updated the mainsnk, snk, and snk68 drivers to use old fashioned tile banking. (Sorry Nicola.) - Changed zac2650 gfxdecode to use scale factors. - Added function video_assert_out_of_range_pixels() to help find the source of invalid pixels (generally out-of-range palette entries due to invalid data or sloppy calculations). Place this after each step in your rendering in a debug build to discover which code is generating improper pixels.
Diffstat (limited to '.gitattributes')
-rw-r--r--.gitattributes1
1 files changed, 1 insertions, 0 deletions
diff --git a/.gitattributes b/.gitattributes
index 5431a9b3518..88d7f4fe20e 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -512,6 +512,7 @@ src/emu/devintrf.c svneol=native#text/plain
src/emu/devintrf.h svneol=native#text/plain
src/emu/drawgfx.c svneol=native#text/plain
src/emu/drawgfx.h svneol=native#text/plain
+src/emu/drawgfxm.h svneol=native#text/plain
src/emu/driver.c svneol=native#text/plain
src/emu/driver.h svneol=native#text/plain
src/emu/drivers/empty.c svneol=native#text/plain