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Continue LOD

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This commit is contained in:
Miloslav Ciz 2024-08-13 20:49:52 +02:00
parent 5d9592bcd6
commit 0078bbf1cd
2 changed files with 34 additions and 17 deletions
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33
renderer.h
View file

@ -54,9 +54,7 @@ struct
*/
uint8_t mapTriangleData[LCR_SETTING_MAX_MAP_TRIANGLES];
uint8_t gridLOD[LCR_RENDERER_LOD_BLOCKS];
uint8_t gridLOD[LCR_RENDERER_LOD_BLOCKS];
// pixel function precomputed values:
int previousTriID;
@ -755,7 +753,7 @@ chk(>,z,LCR_MAP_SIZE_BLOCKS * LCR_RENDERER_UNIT / 2)
Fast and safe rect drawing function (handles out of screen coords).
*/
void LCR_rendererDrawRect(int x, int y, unsigned int w, unsigned int h,
uint16_t color)
uint16_t color, int dither)
{
if (x >= LCR_EFFECTIVE_RESOLUTION_X || y >= LCR_EFFECTIVE_RESOLUTION_Y)
return;
@ -777,7 +775,7 @@ void LCR_rendererDrawRect(int x, int y, unsigned int w, unsigned int h,
if (-1 * y > ((int) h))
return;
y += h;
h += y;
y = 0;
}
@ -786,6 +784,19 @@ void LCR_rendererDrawRect(int x, int y, unsigned int w, unsigned int h,
unsigned long index = y * LCR_EFFECTIVE_RESOLUTION_X + x;
if (dither)
{
uint8_t parity = (x % 2) == (y % 2);
for (unsigned int i = 0; i < h; ++i)
{
for (unsigned int j = ((i % 2) == parity); j < w; j += 2)
LCR_drawPixel(index + j,color);
index += LCR_EFFECTIVE_RESOLUTION_X;
}
}
else
for (unsigned int i = 0; i < h; ++i)
{
for (unsigned int j = 0; j < w; ++j)
@ -798,7 +809,7 @@ void LCR_rendererDrawRect(int x, int y, unsigned int w, unsigned int h,
}
}
void _LCR_drawLOD(int blockX, int blockY, int blockZ, unsigned int size,
void _LCR_drawLODBlock(int blockX, int blockY, int blockZ, unsigned int size,
uint16_t color)
{
S3L_Vec4 p, r;
@ -819,12 +830,13 @@ void _LCR_drawLOD(int blockX, int blockY, int blockZ, unsigned int size,
if (r.w > 0 && r.z > LCR_SETTING_LOD_DISTANCE * LCR_RENDERER_UNIT &&
r.w < LCR_EFFECTIVE_RESOLUTION_X)
{
LCR_rendererDrawRect(r.x - r.w / 2,r.y - r.w / 2,
r.w,r.w,color);
LCR_rendererDrawRect(r.x - r.w / 2,r.y - r.w / 2,(5 * r.w) / 8,
(5 * r.w) / 8,color,1);
LCR_rendererDrawRect(r.x - r.w / 4,r.y,
(3 * r.w) / 4,r.w / 2,color,1);
}
}
/**
Draws background sky, offsets are in multiples of screen dimensions
(e.g. S3L_FRACTIONS_PER_UNIT / 2 for offsetH means half the screen width).
@ -1039,7 +1051,8 @@ void LCR_rendererDrawLOD(void)
if (byte & 0x01)
{
bx = j * 8 + 4;
_LCR_drawLOD(bx,by,bz,LCR_EFFECTIVE_RESOLUTION_X,0);
_LCR_drawLODBlock(bx,by,bz,(LCR_EFFECTIVE_RESOLUTION_X * 3) / 2,
LCR_SETTING_LOD_COLOR);
} // TODO: this ^
byte >>= 1;

4
settings.h
View file

@ -77,4 +77,8 @@
#define LCR_SETTING_LOD_DISTANCE 25
#endif
#ifndef LCR_SETTING_LOD_COLOR
#define LCR_SETTING_LOD_COLOR 0x4229
#endif
#endif // guard