Only unscaled glyph bitmaps are now cached in regular memory. Scaled
glyphs are stored as textures on the GPU. Only the alpha channel on
glyph textures is used, with the color being provided as an input to the
shader.
Outline and bold rendering is improved by using a simple dilate shader.
This looks okay but could be improved (the result is a bit blurry
still).
This improves the look and (especially) the performance of text
rendering in the MangaGamer version of Sengoku Rance.
There are still some bugs/unimplemented features, but the game should be
more or less bearable to play in this state.
The game now basically runs, but with very bad performance and lots of
aliasing on text.
Need to implement anti-aliasing and caching of rendered glyphs next.
System 4 has 4 font weights: light, medium, bold and heavy bold.
SDL_ttf has 2 (normal and bold). For now, xsystem4 treats light/medium
as normal and bold/heavy-bold as bold.
The method parameter of this function has a different meaning from that
of SACT2.SP_SetDrawMethod.
I've only checked it in Widenyo, but it seems 0 and 1 are valid values
and 1 is additive blending.
In OpenGL ES 3, glTexImage2D cannot handle GL_BGRA format. SDL_ttf
returns pixels in BGRA format (because it's the format used in
FreeType2), so it needs to be converted to RGBA before passing to
gfx_init_texture_with_pixels.
It was introduced to flip texture image rendered by DrawDungeon when
presenting on the screen. In GALZOO this approach does not work because
dungeon texture is also used as the source image of gfx functions.
After this, DrawDungeon directly generates vertically flipped image, by
tweaking the projection matrix.
Create pixel-only textures as RGB (no alpha). This fixes some issues
with DrawGraph functions writing to an alpha channel that shouldn't
exist (e.g. causes black screen in Haru Urare).
This doesn't fix the analogous issue for CGs which shouldn't have an
alpha channel.
In addition to DrawDungeon.c, this adds the following files in
{src,include}/dungeon/:
- dgn.{h,c}: Parser for .dgn (map data)
- dtx.{h,c}: Parser for .dtx (textures)
- tes.{h,c}: Parser for .tes (sound IDs associated with textures)
- dungeon.{h,c}: Renderer main routines
- mesh.{h,c}: Renderer for walls and stairs
- skybox.{h,c}: Renderer for background cubemap
- event_markers.{h,c}: Renderer for event markers
And the following changes are made to the existing graphics code:
- sact_Update() calls dungeon_update(), so that event markers animate
- gfx_render_texture() renders vertically flipped image when
texture.flip_y == true (see the comment in dungeon_context_create())
Some features are not implemented yet, including 2D maps and door
animation.
This makes cglm a dependency.
MacOS does not support OpenGL compatibility profile, so the following
changes had to be made:
- Replaced deprecated texture2D() with texture() in shaders
- Renamed `texture` uniform variable to `tex`, to avoid name conflict
- Use VAO, which is mandatory in OpenGL 3 core profile
Nunuhara Cabbage