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GPU: More accurate texture blending in non-true-colour-mode

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Fixes Silent Hill loading animation, Advanced V.G. intro fade-out, and
probably others.
This commit is contained in:
Connor McLaughlin
2020-05-15 01:31:48 +10:00
parent c114873ed8
commit bf3c83658a
4 changed files with 85 additions and 40 deletions
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11
src/core/gpu.h
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@ -95,7 +95,8 @@ public:
MAX_PRIMITIVE_HEIGHT = 512,
DOT_TIMER_INDEX = 0,
HBLANK_TIMER_INDEX = 1,
MAX_RESOLUTION_SCALE = 16
MAX_RESOLUTION_SCALE = 16,
DITHER_MATRIX_SIZE = 4
};
enum : u16
@ -107,10 +108,10 @@ public:
};
// 4x4 dither matrix.
static constexpr s32 DITHER_MATRIX[4][4] = {{-4, +0, -3, +1}, // row 0
{+2, -2, +3, -1}, // row 1
{-3, +1, -4, +0}, // row 2
{+4, -1, +2, -2}}; // row 3
static constexpr s32 DITHER_MATRIX[DITHER_MATRIX_SIZE][DITHER_MATRIX_SIZE] = {{-4, +0, -3, +1}, // row 0
{+2, -2, +3, -1}, // row 1
{-3, +1, -4, +0}, // row 2
{+4, -1, +2, -2}}; // row 3
// Base class constructor.
GPU();