ShuriZma
/
mgba
mirror of https://github.com/mgba-emu/mgba.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

GBA Video: Slightly optimize frame compositing

This commit is contained in:
Vicki Pfau 2020-01-14 23:23:53 -08:00
parent d4e30b74ff
commit ab1d825e30
1 changed files with 27 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
src/gba/renderers/gl.c
View File

@ -585,9 +585,6 @@ static const char* const _finalize =
"out vec4 color;\n"
"void composite(vec4 pixel, ivec4 flags, inout vec4 topPixel, inout ivec4 topFlags, inout vec4 bottomPixel, inout ivec4 bottomFlags) {\n"
" if (pixel.a == 0.) {\n"
" return;\n"
" }\n"
" if (flags.x >= topFlags.x) {\n"
" if (flags.x >= bottomFlags.x) {\n"
" return;\n"
@ -607,32 +604,43 @@ static const char* const _finalize =
" vec4 bottomPixel = topPixel;\n"
" ivec4 topFlags = ivec4(texelFetch(backdropFlags, ivec2(0, texCoord.y), 0));\n"
" ivec4 bottomFlags = topFlags;\n"
" ivec4 windowFlags = texelFetch(window, ivec2(texCoord * float(scale)), 0);\n"
" ivec2 coord = ivec2(texCoord * float(scale));\n"
" ivec4 windowFlags = texelFetch(window, coord, 0);\n"
" int layerWindow = windowFlags.x;\n"
" if ((layerWindow & 16) != 0) {\n"
" vec4 pix = texelFetch(layers[4], ivec2(texCoord * float(scale)), 0);\n"
" ivec4 inflags = ivec4(texelFetch(flags[4], ivec2(texCoord * float(scale)), 0));\n"
" composite(pix, inflags, topPixel, topFlags, bottomPixel, bottomFlags);\n"
" vec4 pix = texelFetch(layers[4], coord, 0);\n"
" if (pix.a != 0.) {\n"
" ivec4 inflags = ivec4(texelFetch(flags[4], coord, 0));\n"
" composite(pix, inflags, topPixel, topFlags, bottomPixel, bottomFlags);\n"
" }\n"
" }\n"
" if ((layerWindow & 1) != 0) {\n"
" vec4 pix = texelFetch(layers[0], ivec2(texCoord * float(scale)), 0);\n"
" ivec4 inflags = ivec4(texelFetch(flags[0], ivec2(texCoord * float(scale)), 0).xyz, 0);\n"
" composite(pix, inflags, topPixel, topFlags, bottomPixel, bottomFlags);\n"
" vec4 pix = texelFetch(layers[0], coord, 0);\n"
" if (pix.a != 0.) {\n"
" ivec4 inflags = ivec4(texelFetch(flags[0], coord, 0).xyz, 0);\n"
" composite(pix, inflags, topPixel, topFlags, bottomPixel, bottomFlags);\n"
" }\n"
" }\n"
" if ((layerWindow & 2) != 0) {\n"
" vec4 pix = texelFetch(layers[1], ivec2(texCoord * float(scale)), 0);\n"
" ivec4 inflags = ivec4(texelFetch(flags[1], ivec2(texCoord * float(scale)), 0).xyz, 0);\n"
" composite(pix, inflags, topPixel, topFlags, bottomPixel, bottomFlags);\n"
" vec4 pix = texelFetch(layers[1], coord, 0);\n"
" if (pix.a != 0.) {\n"
" ivec4 inflags = ivec4(texelFetch(flags[1], coord, 0).xyz, 0);\n"
" composite(pix, inflags, topPixel, topFlags, bottomPixel, bottomFlags);\n"
" }\n"
" }\n"
" if ((layerWindow & 4) != 0) {\n"
" vec4 pix = texelFetch(layers[2], ivec2(texCoord * float(scale)), 0);\n"
" ivec4 inflags = ivec4(texelFetch(flags[2], ivec2(texCoord * float(scale)), 0).xyz.xyz, 0);\n"
" composite(pix, inflags, topPixel, topFlags, bottomPixel, bottomFlags);\n"
" vec4 pix = texelFetch(layers[2], coord, 0);\n"
" if (pix.a != 0.) {\n"
" ivec4 inflags = ivec4(texelFetch(flags[2], coord, 0).xyz, 0);\n"
" composite(pix, inflags, topPixel, topFlags, bottomPixel, bottomFlags);\n"
" }\n"
" }\n"
" if ((layerWindow & 8) != 0) {\n"
" vec4 pix = texelFetch(layers[3], ivec2(texCoord * float(scale)), 0);\n"
" ivec4 inflags = ivec4(texelFetch(flags[3], ivec2(texCoord * float(scale)), 0).xyz, 0);\n"
" composite(pix, inflags, topPixel, topFlags, bottomPixel, bottomFlags);\n"
" vec4 pix = texelFetch(layers[3], coord, 0);\n"
" if (pix.a != 0.) {\n"
" ivec4 inflags = ivec4(texelFetch(flags[3], coord, 0).xyz, 0);\n"
" composite(pix, inflags, topPixel, topFlags, bottomPixel, bottomFlags);\n"
" }\n"
" }\n"
" if ((layerWindow & 32) == 0) {\n"
" topFlags.y &= ~1;\n"