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softgpu: Possibly fix a bug. Or make things worse. I don't know :/

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Tony Wasserka 2013-07-19 20:45:00 +02:00 • committed by neobrain
parent 90b868d1ef
commit e7ac41c4bc
1 changed files with 3 additions and 2 deletions
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5
GPU/Software/Rasterizer.cpp
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@ -35,7 +35,7 @@ static int orient2d(const DrawingCoords& v0, const DrawingCoords& v1, const Draw
int GetPixelDataOffset(int texel_size_bits, int row_pitch_bits, int u, int v)
{
if (!(gstate.texmode & 1))
return v * row_pitch_bits / 8 + u * texel_size_bits / 8;
return v * row_pitch_bits *texel_size_bits/8 / 8 + u * texel_size_bits / 8;
int tile_size_bits = 32;
int tiles_in_block_horizontal = 4;
@ -45,7 +45,8 @@ int GetPixelDataOffset(int texel_size_bits, int row_pitch_bits, int u, int v)
int tile_u = u / texels_per_tile;
int tile_idx = (v % tiles_in_block_vertical) * (tiles_in_block_horizontal) +
(v / tiles_in_block_vertical) * ((row_pitch_bits/tile_size_bits)*tiles_in_block_vertical) +
// TODO: not sure if the *texel_size_bits/8 factor is correct
(v / tiles_in_block_vertical) * ((row_pitch_bits*texel_size_bits/8/tile_size_bits)*tiles_in_block_vertical) +
(tile_u % tiles_in_block_horizontal) +
(tile_u / tiles_in_block_horizontal) * (tiles_in_block_horizontal*tiles_in_block_vertical);
return tile_idx * tile_size_bits/8 + ((u % (tile_size_bits / texel_size_bits)));