From cd8236303ec178a25f07408c892ed5f941fe3273 Mon Sep 17 00:00:00 2001
From: Arisotura <thetotalworm@gmail.com>
Date: Sun, 19 May 2019 19:37:13 +0200
Subject: begin botching the code
BAHAHAHAAAA
---
src/GPU2D.cpp | 247 ++++++++++------------------------------------------------
src/GPU2D.h | 8 +-
2 files changed, 42 insertions(+), 213 deletions(-)
diff --git a/src/GPU2D.cpp b/src/GPU2D.cpp
index 88436db..e810275 100644
--- a/src/GPU2D.cpp
+++ b/src/GPU2D.cpp
@@ -217,16 +217,10 @@ void GPU2D::SetFramebuffer(u32* buf)
void GPU2D::SetDisplaySettings(int scale, bool accel)
{
- if (accel) scale = 0;
Accelerated = accel;
- LineScale = scale;
- LineStride = 256 << (scale*2);
-
- if (Accelerated) DrawPixel = DrawPixel_Accel;
- else if (scale == 1) DrawPixel = DrawPixel_2x;
- else if (scale == 2) DrawPixel = DrawPixel_4x;
- else DrawPixel = DrawPixel_1x;
+ if (Accelerated) DrawPixel = DrawPixel_Accel;
+ else DrawPixel = DrawPixel_Normal;
}
@@ -626,7 +620,7 @@ u32 GPU2D::ColorBrightnessDown(u32 val, u32 factor)
void GPU2D::DrawScanline(u32 line)
{
- int stride = Accelerated ? (256*3 + 2) : LineStride;
+ int stride = Accelerated ? (256*3 + 2) : 256;
u32* dst = &Framebuffer[stride * line];
int n3dline = line;
@@ -648,8 +642,14 @@ void GPU2D::DrawScanline(u32 line)
if (forceblank)
{
- for (int i = 0; i < LineStride; i++)
+ for (int i = 0; i < 256; i++)
dst[i] = 0xFFFFFFFF;
+
+ if (Accelerated)
+ {
+ dst[256*3] = 0;
+ dst[256*3 + 1] = 0;
+ }
return;
}
@@ -674,7 +674,7 @@ void GPU2D::DrawScanline(u32 line)
{
case 0: // screen off
{
- for (int i = 0; i < LineStride; i++)
+ for (int i = 0; i < 256; i++)
dst[i] = 0x003F3F3F;
}
break;
@@ -701,37 +701,12 @@ void GPU2D::DrawScanline(u32 line)
u8 g = (color & 0x03E0) >> 4;
u8 b = (color & 0x7C00) >> 9;
- int d = i << LineScale;
- dst[d] = r | (g << 8) | (b << 16);
- if (LineScale == 1)
- {
- dst[d+1] = dst[d];
- dst[d+512] = dst[d];
- dst[d+513] = dst[d];
- }
- else if (LineScale == 2)
- {
- dst[d+1] = dst[d];
- dst[d+2] = dst[d];
- dst[d+3] = dst[d];
- dst[d+1024] = dst[d];
- dst[d+1024+1] = dst[d];
- dst[d+1024+2] = dst[d];
- dst[d+1024+3] = dst[d];
- dst[d+2048] = dst[d];
- dst[d+2048+1] = dst[d];
- dst[d+2048+2] = dst[d];
- dst[d+2048+3] = dst[d];
- dst[d+3072] = dst[d];
- dst[d+3072+1] = dst[d];
- dst[d+3072+2] = dst[d];
- dst[d+3072+3] = dst[d];
- }
+ dst[i] = r | (g << 8) | (b << 16);
}
}
else
{
- for (int i = 0; i < LineStride; i++)
+ for (int i = 0; i < 256; i++)
{
dst[i] = 0;
}
@@ -748,32 +723,7 @@ void GPU2D::DrawScanline(u32 line)
u8 g = (color & 0x03E0) >> 4;
u8 b = (color & 0x7C00) >> 9;
- int d = i << LineScale;
- dst[d] = r | (g << 8) | (b << 16);
- if (LineScale == 1)
- {
- dst[d+1] = dst[d];
- dst[d+512] = dst[d];
- dst[d+513] = dst[d];
- }
- else if (LineScale == 2)
- {
- dst[d+1] = dst[d];
- dst[d+2] = dst[d];
- dst[d+3] = dst[d];
- dst[d+1024] = dst[d];
- dst[d+1024+1] = dst[d];
- dst[d+1024+2] = dst[d];
- dst[d+1024+3] = dst[d];
- dst[d+2048] = dst[d];
- dst[d+2048+1] = dst[d];
- dst[d+2048+2] = dst[d];
- dst[d+2048+3] = dst[d];
- dst[d+3072] = dst[d];
- dst[d+3072+1] = dst[d];
- dst[d+3072+2] = dst[d];
- dst[d+3072+3] = dst[d];
- }
+ dst[i] = r | (g << 8) | (b << 16);
}
}
break;
@@ -817,7 +767,7 @@ void GPU2D::DrawScanline(u32 line)
u32 factor = MasterBrightness & 0x1F;
if (factor > 16) factor = 16;
- for (int i = 0; i < LineStride; i++)
+ for (int i = 0; i < 256; i++)
{
dst[i] = ColorBrightnessUp(dst[i], factor);
}
@@ -828,7 +778,7 @@ void GPU2D::DrawScanline(u32 line)
u32 factor = MasterBrightness & 0x1F;
if (factor > 16) factor = 16;
- for (int i = 0; i < LineStride; i++)
+ for (int i = 0; i < 256; i++)
{
dst[i] = ColorBrightnessDown(dst[i], factor);
}
@@ -838,7 +788,7 @@ void GPU2D::DrawScanline(u32 line)
// convert to 32-bit BGRA
// note: 32-bit RGBA would be more straightforward, but
// BGRA seems to be more compatible (Direct2D soft, cairo...)
- for (int i = 0; i < LineStride; i+=2)
+ for (int i = 0; i < 256; i+=2)
{
u64 c = *(u64*)&dst[i];
@@ -1044,7 +994,7 @@ void GPU2D::DoCapture(u32 line, u32 width)
{
for (u32 i = 0; i < width; i++)
{
- u32 val = srcA[i << LineScale];
+ u32 val = srcA[i];
// TODO: check what happens when alpha=0
@@ -1095,7 +1045,7 @@ void GPU2D::DoCapture(u32 line, u32 width)
{
for (u32 i = 0; i < width; i++)
{
- u32 val = srcA[i << LineScale];
+ u32 val = srcA[i];
// TODO: check what happens when alpha=0
@@ -1129,7 +1079,7 @@ void GPU2D::DoCapture(u32 line, u32 width)
{
for (u32 i = 0; i < width; i++)
{
- u32 val = srcA[i << LineScale];
+ u32 val = srcA[i];
// TODO: check what happens when alpha=0
@@ -1393,7 +1343,7 @@ void GPU2D::DrawScanline_BGOBJ(u32 line)
backdrop = r | (g << 8) | (b << 16) | 0x20000000;
backdrop |= (backdrop << 32);
- for (int i = 0; i < LineStride; i+=2)
+ for (int i = 0; i < 256; i+=2)
*(u64*)&BGOBJLine[i] = backdrop;
}
@@ -1426,12 +1376,10 @@ void GPU2D::DrawScanline_BGOBJ(u32 line)
{
u32 bldcnteffect = (BlendCnt >> 6) & 0x3;
- for (int i = 0; i < LineStride; i++)
+ for (int i = 0; i < 256; i++)
{
- int j = (i >> LineScale) & 0xFF;
-
u32 val1 = BGOBJLine[i];
- u32 val2 = BGOBJLine[4096+i];
+ u32 val2 = BGOBJLine[256+i];
u32 coloreffect, eva, evb;
@@ -1472,7 +1420,7 @@ void GPU2D::DrawScanline_BGOBJ(u32 line)
if (flag1 & 0x80) flag1 = 0x10;
else if (flag1 & 0x40) flag1 = 0x01;
- if ((BlendCnt & flag1) && (WindowMask[j] & 0x20))
+ if ((BlendCnt & flag1) && (WindowMask[i] & 0x20))
{
if ((bldcnteffect == 1) && (BlendCnt & target2))
{
@@ -1535,60 +1483,16 @@ void GPU2D::DrawScanline_BGOBJ(u32 line)
}
-void GPU2D::DrawPixel_1x(u32* dst, u16 color, u32 flag)
+void GPU2D::DrawPixel_Normal(u32* dst, u16 color, u32 flag)
{
u8 r = (color & 0x001F) << 1;
u8 g = (color & 0x03E0) >> 4;
u8 b = (color & 0x7C00) >> 9;
- *(dst+4096) = *dst;
+ *(dst+256) = *dst;
*dst = r | (g << 8) | (b << 16) | flag;
}
-void GPU2D::DrawPixel_2x(u32* dst, u16 color, u32 flag)
-{
- u8 r = (color & 0x001F) << 1;
- u8 g = (color & 0x03E0) >> 4;
- u8 b = (color & 0x7C00) >> 9;
-
- u64 val = r | (g << 8) | (b << 16) | flag;
- val |= (val << 32);
-
- *(u64*)(dst+4096) = *(u64*)dst;
- *(u64*)(dst+4096+512) = *(u64*)(dst+512);
-
- *(u64*)dst = val;
- *(u64*)(dst+512) = val;
-}
-
-void GPU2D::DrawPixel_4x(u32* dst, u16 color, u32 flag)
-{
- u8 r = (color & 0x001F) << 1;
- u8 g = (color & 0x03E0) >> 4;
- u8 b = (color & 0x7C00) >> 9;
-
- u64 val = r | (g << 8) | (b << 16) | flag;
- val |= (val << 32);
-
- *(u64*)(dst+4096) = *(u64*)dst;
- *(u64*)(dst+4096+2) = *(u64*)(dst+2);
- *(u64*)(dst+4096+1024) = *(u64*)(dst+1024);
- *(u64*)(dst+4096+1024+2) = *(u64*)(dst+1024+2);
- *(u64*)(dst+4096+2048) = *(u64*)(dst+2048);
- *(u64*)(dst+4096+2048+2) = *(u64*)(dst+2048+2);
- *(u64*)(dst+4096+3072) = *(u64*)(dst+3072);
- *(u64*)(dst+4096+3072+2) = *(u64*)(dst+3072+2);
-
- *(u64*)dst = val;
- *(u64*)(dst+2) = val;
- *(u64*)(dst+1024) = val;
- *(u64*)(dst+1024+2) = val;
- *(u64*)(dst+2048) = val;
- *(u64*)(dst+2048+2) = val;
- *(u64*)(dst+3072) = val;
- *(u64*)(dst+3072+2) = val;
-}
-
void GPU2D::DrawPixel_Accel(u32* dst, u16 color, u32 flag)
{
u8 r = (color & 0x001F) << 1;
@@ -1629,77 +1533,6 @@ void GPU2D::DrawBG_3D()
BGOBJLine[i] = 0x40000000 | pos; // 3D-layer placeholder
}
}
- else if (LineScale == 1)
- {
- for (; i < iend; i++)
- {
- int is = i << 1;
- int xs = xoff << 1;
- u32 c;
-
- xoff++;
- if (!(WindowMask[i] & 0x01)) continue;
-
- c = _3DLine[xs];
- if ((c >> 24) != 0)
- {
- BGOBJLine[is+4096] = BGOBJLine[is];
- BGOBJLine[is] = c | 0x40000000;
- }
-
- c = _3DLine[xs+1]; is++;
- if ((c >> 24) != 0)
- {
- BGOBJLine[is+4096] = BGOBJLine[is];
- BGOBJLine[is] = c | 0x40000000;
- }
-
- c = _3DLine[xs+512]; is += 511;
- if ((c >> 24) != 0)
- {
- BGOBJLine[is+4096] = BGOBJLine[is];
- BGOBJLine[is] = c | 0x40000000;
- }
-
- c = _3DLine[xs+513]; is++;
- if ((c >> 24) != 0)
- {
- BGOBJLine[is+4096] = BGOBJLine[is];
- BGOBJLine[is] = c | 0x40000000;
- }
- }
- }
- else if (LineScale == 2)
- {
- for (; i < iend; i++)
- {
- int is = i << 2;
- int xs = xoff << 2;
- u32 c;
-
- xoff++;
- if (!(WindowMask[i] & 0x01)) continue;
-
- for (int by = 0; by < 4; by++)
- {
- for (int bx = 0; bx < 4; bx++)
- {
- c = _3DLine[xs];
- if ((c >> 24) != 0)
- {
- BGOBJLine[is+4096] = BGOBJLine[is];
- BGOBJLine[is] = c | 0x40000000;
- }
-
- is++;
- xs++;
- }
-
- is += 1020;
- xs += 1020;
- }
- }
- }
else
{
for (; i < iend; i++)
@@ -1710,7 +1543,7 @@ void GPU2D::DrawBG_3D()
if ((c >> 24) == 0) continue;
if (!(WindowMask[i] & 0x01)) continue;
- BGOBJLine[i+4096] = BGOBJLine[i];
+ BGOBJLine[i+256] = BGOBJLine[i];
BGOBJLine[i] = c | 0x40000000;
}
}
@@ -1814,7 +1647,7 @@ void GPU2D::DrawBG_Text(u32 line, u32 bgnum)
xmos--;
if (color)
- DrawPixel(&BGOBJLine[i<<LineScale], curpal[color], 0x01000000<<bgnum);
+ DrawPixel(&BGOBJLine[i], curpal[color], 0x01000000<<bgnum);
}
xoff++;
@@ -1866,7 +1699,7 @@ void GPU2D::DrawBG_Text(u32 line, u32 bgnum)
xmos--;
if (color)
- DrawPixel(&BGOBJLine[i<<LineScale], curpal[color], 0x01000000<<bgnum);
+ DrawPixel(&BGOBJLine[i], curpal[color], 0x01000000<<bgnum);
}
xoff++;
@@ -1939,7 +1772,7 @@ void GPU2D::DrawBG_Affine(u32 line, u32 bgnum)
if (xmos > 0)
{
if (color)
- DrawPixel(&BGOBJLine[i<<LineScale], pal[color], 0x01000000<<bgnum);
+ DrawPixel(&BGOBJLine[i], pal[color], 0x01000000<<bgnum);
xmos--;
}
@@ -1955,7 +1788,7 @@ void GPU2D::DrawBG_Affine(u32 line, u32 bgnum)
color = GPU::ReadVRAM_BG<u8>(tilesetaddr + (curtile << 6) + (tileyoff << 3) + tilexoff);
if (color)
- DrawPixel(&BGOBJLine[i<<LineScale], pal[color], 0x01000000<<bgnum);
+ DrawPixel(&BGOBJLine[i], pal[color], 0x01000000<<bgnum);
xmos = xmossize;
}
@@ -2038,7 +1871,7 @@ void GPU2D::DrawBG_Extended(u32 line, u32 bgnum)
if (xmos > 0)
{
if (color & 0x8000)
- DrawPixel(&BGOBJLine[i<<LineScale], color, 0x01000000<<bgnum);
+ DrawPixel(&BGOBJLine[i], color, 0x01000000<<bgnum);
xmos--;
}
@@ -2048,7 +1881,7 @@ void GPU2D::DrawBG_Extended(u32 line, u32 bgnum)
color = GPU::ReadVRAM_BG<u16>(tilemapaddr + (((((rotY & ymask) >> 8) << yshift) + ((rotX & xmask) >> 8)) << 1));
if (color & 0x8000)
- DrawPixel(&BGOBJLine[i<<LineScale], color, 0x01000000<<bgnum);
+ DrawPixel(&BGOBJLine[i], color, 0x01000000<<bgnum);
xmos = xmossize;
}
@@ -2074,7 +1907,7 @@ void GPU2D::DrawBG_Extended(u32 line, u32 bgnum)
if (xmos > 0)
{
if (color)
- DrawPixel(&BGOBJLine[i<<LineScale], pal[color], 0x01000000<<bgnum);
+ DrawPixel(&BGOBJLine[i], pal[color], 0x01000000<<bgnum);
xmos--;
}
@@ -2084,7 +1917,7 @@ void GPU2D::DrawBG_Extended(u32 line, u32 bgnum)
color = GPU::ReadVRAM_BG<u8>(tilemapaddr + (((rotY & ymask) >> 8) << yshift) + ((rotX & xmask) >> 8));
if (color)
- DrawPixel(&BGOBJLine[i<<LineScale], pal[color], 0x01000000<<bgnum);
+ DrawPixel(&BGOBJLine[i], pal[color], 0x01000000<<bgnum);
xmos = xmossize;
}
@@ -2141,7 +1974,7 @@ void GPU2D::DrawBG_Extended(u32 line, u32 bgnum)
if (xmos > 0)
{
if (color)
- DrawPixel(&BGOBJLine[i<<LineScale], curpal[color], 0x01000000<<bgnum);
+ DrawPixel(&BGOBJLine[i], curpal[color], 0x01000000<<bgnum);
xmos--;
}
@@ -2163,7 +1996,7 @@ void GPU2D::DrawBG_Extended(u32 line, u32 bgnum)
color = GPU::ReadVRAM_BG<u8>(tilesetaddr + ((curtile & 0x03FF) << 6) + (tileyoff << 3) + tilexoff);
if (color)
- DrawPixel(&BGOBJLine[i<<LineScale], curpal[color], 0x01000000<<bgnum);
+ DrawPixel(&BGOBJLine[i], curpal[color], 0x01000000<<bgnum);
xmos = xmossize;
}
@@ -2241,7 +2074,7 @@ void GPU2D::DrawBG_Large(u32 line) // BG is always BG2
if (xmos > 0)
{
if (color)
- DrawPixel(&BGOBJLine[i<<LineScale], pal[color], 0x01000000<<2);
+ DrawPixel(&BGOBJLine[i], pal[color], 0x01000000<<2);
xmos--;
}
@@ -2251,7 +2084,7 @@ void GPU2D::DrawBG_Large(u32 line) // BG is always BG2
color = GPU::ReadVRAM_BG<u8>(tilemapaddr + (((rotY & ymask) >> 8) << yshift) + ((rotX & xmask) >> 8));
if (color)
- DrawPixel(&BGOBJLine[i<<LineScale], pal[color], 0x01000000<<2);
+ DrawPixel(&BGOBJLine[i], pal[color], 0x01000000<<2);
}
}
@@ -2269,7 +2102,7 @@ void GPU2D::InterleaveSprites(u32 prio)
{
if (((OBJLine[i] & 0xF8000) == prio) && (WindowMask[i] & 0x10))
{
- DrawPixel(&BGOBJLine[i<<LineScale], OBJLine[i] & 0x7FFF, OBJLine[i] & 0xFF000000);
+ DrawPixel(&BGOBJLine[i], OBJLine[i] & 0x7FFF, OBJLine[i] & 0xFF000000);
}
}
}
diff --git a/src/GPU2D.h b/src/GPU2D.h
index c19ddf7..eb159f7 100644
--- a/src/GPU2D.h
+++ b/src/GPU2D.h
@@ -69,11 +69,9 @@ private:
bool Enabled;
u32* Framebuffer;
- u32 LineStride;
- u32 LineScale;
bool Accelerated;
- u32 BGOBJLine[1024*4 * 2];
+ u32 BGOBJLine[256*3];
u32* _3DLine;
u8 WindowMask[256];
@@ -134,9 +132,7 @@ private:
void DrawScanlineBGMode6(u32 line, u32 nsprites);
void DrawScanline_BGOBJ(u32 line);
- static void DrawPixel_1x(u32* dst, u16 color, u32 flag);
- static void DrawPixel_2x(u32* dst, u16 color, u32 flag);
- static void DrawPixel_4x(u32* dst, u16 color, u32 flag);
+ static void DrawPixel_Normal(u32* dst, u16 color, u32 flag);
static void DrawPixel_Accel(u32* dst, u16 color, u32 flag);
void (*DrawPixel)(u32* dst, u16 color, u32 flag);
--
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