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GBA Video: Fix OpenGL renderer 512x512 backgrounds (fixes #1572)

This commit is contained in:
Vicki Pfau 2019-11-10 20:42:36 -08:00
parent 89c49f15d0
commit 4e03b15040
2 changed files with 13 additions and 12 deletions
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1
CHANGES
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@ -90,6 +90,7 @@ Emulation fixes:
- ARM: Fix STR writeback pipeline stage
- ARM: Partially fix LDM/STM writeback with empty register list
- GBA DMA: Fix case where DMAs could get misaligned (fixes mgba.io/i/1092)
- GBA Video: Fix OpenGL renderer 512x512 backgrounds (fixes mgba.io/i/1572)
Other fixes:
- 3DS: Fix screen darkening (fixes mgba.io/i/1562)
- Vita: Fix analog controls (fixes mgba.io/i/1554)

24
src/gba/renderers/gl.c
View File

@ -145,21 +145,21 @@ static const char* const _renderMode0 =
" if (mosaic.y > 1) {\n"
" coord.y -= coord.y % mosaic.y;\n"
" }\n"
" coord += (ivec2(0x3FF, 0x3FF000) & offset[int(texCoord.y)]) >> ivec2(0, 12);\n"
" ivec2 wrap = ivec2(255, 511);\n"
" if (size == 3) {\n"
" coord.y += (coord.y & 256) << 1;\n"
" wrap.y = 1023;\n"
" } else if (size == 0) {\n"
" wrap.y = 255;\n"
" }\n"
" if (size != 2) {\n"
" coord.y &= ~256;\n"
" }\n"
" coord += (ivec2(0x1FF, 0x1FF000) & offset[int(texCoord.y)]) >> ivec2(0, 12);\n"
" ivec2 wrap = ivec2(255, 255);\n"
" int doty = 0;\n"
" if ((size & 1) == 1) {\n"
" coord.y += coord.x & 256;\n"
" wrap.x = 511;\n"
" ++doty;\n"
" }\n"
" if ((size & 2) == 2) {\n"
" wrap.y = 511;\n"
" ++doty;\n"
" }\n"
" coord &= wrap;\n"
" wrap = coord & 256;\n"
" coord &= 255;\n"
" coord.y += wrap.x + wrap.y * doty;\n"
" int mapAddress = screenBase + (coord.x >> 3) + (coord.y >> 3) * 32;\n"
" vec4 map = texelFetch(vram, ivec2(mapAddress & 255, mapAddress >> 8), 0);\n"
" int tileFlags = int(map.g * 15.9);\n"