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impl line width

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This commit is contained in:
Bigfoot71 2025-03-16 00:50:34 +01:00
parent 645b5e9c45
commit 3bc8f36f14
1 changed files with 86 additions and 13 deletions
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81
src/external/rlsw.h vendored
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@ -272,6 +272,8 @@ void swClear(uint32_t bitmask);
void swBlendFunc(SWfactor sfactor, SWfactor dfactor); void swBlendFunc(SWfactor sfactor, SWfactor dfactor);
void swCullFace(SWface face); void swCullFace(SWface face);
void swLineWidth(float width);
void swMatrixMode(SWmatrix mode); void swMatrixMode(SWmatrix mode);
void swPushMatrix(void); void swPushMatrix(void);
void swPopMatrix(void); void swPopMatrix(void);
@ -1989,7 +1991,7 @@ static inline void FUNC_NAME(const sw_vertex_t* v0, const sw_vertex_t* v1) \
\ \
sw_framebuffer_write_depth(dptr, z); \ sw_framebuffer_write_depth(dptr, z); \
\ \
void* cptr = sw_framebuffer_get_depth_addr( \ void* cptr = sw_framebuffer_get_color_addr( \
colorBuffer, offset \ colorBuffer, offset \
); \ ); \
\ \
@ -2037,7 +2039,7 @@ static inline void FUNC_NAME(const sw_vertex_t* v0, const sw_vertex_t* v1) \
\ \
sw_framebuffer_write_depth(dptr, z); \ sw_framebuffer_write_depth(dptr, z); \
\ \
void* cptr = sw_framebuffer_get_depth_addr( \ void* cptr = sw_framebuffer_get_color_addr( \
colorBuffer, offset \ colorBuffer, offset \
); \ ); \
\ \
@ -2067,17 +2069,82 @@ static inline void FUNC_NAME(const sw_vertex_t* v0, const sw_vertex_t* v1) \
} \ } \
} }
#define DEFINE_LINE_THICK_RASTER(FUNC_NAME, RASTER_FUNC) \
void FUNC_NAME(const sw_vertex_t* v1, const sw_vertex_t* v2) \
{ \
sw_vertex_t tv1, tv2; \
\
int x1 = (int)v1->screen[0]; \
int y1 = (int)v1->screen[1]; \
int x2 = (int)v2->screen[0]; \
int y2 = (int)v2->screen[1]; \
\
int dx = x2 - x1; \
int dy = y2 - y1; \
\
RASTER_FUNC(v1, v2); \
\
if (dx != 0 && abs(dy / dx) < 1) { \
int wy = (int)((RLSW.lineWidth - 1.0f) * abs(dx) / sqrtf(dx * dx + dy * dy)); \
wy >>= 1; /* Division by 2 via bit shift */ \
for (int i = 1; i <= wy; i++) { \
tv1 = *v1, tv2 = *v2; \
tv1.screen[1] -= i; \
tv2.screen[1] -= i; \
RASTER_FUNC(&tv1, &tv2); \
tv1 = *v1, tv2 = *v2; \
tv1.screen[1] += i; \
tv2.screen[1] += i; \
RASTER_FUNC(&tv1, &tv2); \
} \
} \
else if (dy != 0) { \
int wx = (int)((RLSW.lineWidth - 1.0f) * abs(dy) / sqrtf(dx * dx + dy * dy)); \
wx >>= 1; /* Division by 2 via bit shift */ \
for (int i = 1; i <= wx; i++) { \
tv1 = *v1, tv2 = *v2; \
tv1.screen[0] -= i; \
tv2.screen[0] -= i; \
RASTER_FUNC(&tv1, &tv2); \
tv1 = *v1, tv2 = *v2; \
tv1.screen[0] += i; \
tv2.screen[0] += i; \
RASTER_FUNC(&tv1, &tv2); \
} \
} \
}
DEFINE_LINE_RASTER(sw_line_raster, 0, 0) DEFINE_LINE_RASTER(sw_line_raster, 0, 0)
DEFINE_LINE_RASTER(sw_line_raster_DEPTH, 1, 0) DEFINE_LINE_RASTER(sw_line_raster_DEPTH, 1, 0)
DEFINE_LINE_RASTER(sw_line_raster_BLEND, 0, 1) DEFINE_LINE_RASTER(sw_line_raster_BLEND, 0, 1)
DEFINE_LINE_RASTER(sw_line_raster_DEPTH_BLEND, 1, 1) DEFINE_LINE_RASTER(sw_line_raster_DEPTH_BLEND, 1, 1)
DEFINE_LINE_THICK_RASTER(sw_line_thick_raster, sw_line_raster)
DEFINE_LINE_THICK_RASTER(sw_line_thick_raster_DEPTH, sw_line_raster_DEPTH)
DEFINE_LINE_THICK_RASTER(sw_line_thick_raster_BLEND, sw_line_raster_BLEND)
DEFINE_LINE_THICK_RASTER(sw_line_thick_raster_DEPTH_BLEND, sw_line_raster_DEPTH_BLEND)
static inline void sw_line_render(sw_vertex_t* v0, sw_vertex_t* v1) static inline void sw_line_render(sw_vertex_t* v0, sw_vertex_t* v1)
{ {
if (!sw_line_project_and_clip(v0, v1)) { if (!sw_line_project_and_clip(v0, v1)) {
return; return;
} }
if (RLSW.lineWidth >= 2.0f) {
if (SW_STATE_CHECK(SW_STATE_DEPTH_TEST | SW_STATE_BLEND)) {
sw_line_thick_raster_DEPTH_BLEND(v0, v1);
}
else if (SW_STATE_CHECK(SW_STATE_BLEND)) {
sw_line_thick_raster_BLEND(v0, v1);
}
else if (SW_STATE_CHECK(SW_STATE_DEPTH_TEST)) {
sw_line_thick_raster_DEPTH(v0, v1);
}
else {
sw_line_thick_raster(v0, v1);
}
}
else {
if (SW_STATE_CHECK(SW_STATE_DEPTH_TEST | SW_STATE_BLEND)) { if (SW_STATE_CHECK(SW_STATE_DEPTH_TEST | SW_STATE_BLEND)) {
sw_line_raster_DEPTH_BLEND(v0, v1); sw_line_raster_DEPTH_BLEND(v0, v1);
} }
@ -2091,6 +2158,7 @@ static inline void sw_line_render(sw_vertex_t* v0, sw_vertex_t* v1)
sw_line_raster(v0, v1); sw_line_raster(v0, v1);
} }
} }
}
/* === Some Validity Check Helper === */ /* === Some Validity Check Helper === */
@ -2173,8 +2241,6 @@ static inline bool sw_is_blend_dst_factor_valid(int blend)
void swInit(int w, int h) void swInit(int w, int h)
{ {
swViewport(0, 0, w, h);
sw_framebuffer_load( sw_framebuffer_load(
&RLSW.framebuffer.color, &RLSW.framebuffer.color,
&RLSW.framebuffer.depth, &RLSW.framebuffer.depth,
@ -2184,6 +2250,8 @@ void swInit(int w, int h)
RLSW.framebuffer.width = w; RLSW.framebuffer.width = w;
RLSW.framebuffer.height = h; RLSW.framebuffer.height = h;
swViewport(0, 0, w, h);
RLSW.loadedTextures = SW_MALLOC(SW_MAX_TEXTURES); RLSW.loadedTextures = SW_MALLOC(SW_MAX_TEXTURES);
RLSW.freeTextureIds = SW_MALLOC(SW_MAX_TEXTURES); RLSW.freeTextureIds = SW_MALLOC(SW_MAX_TEXTURES);
@ -2372,6 +2440,11 @@ void swCullFace(SWface face)
RLSW.cullFace = face; RLSW.cullFace = face;
} }
void swLineWidth(float width)
{
RLSW.lineWidth = roundf(width);
}
void swMatrixMode(SWmatrix mode) void swMatrixMode(SWmatrix mode)
{ {
switch (mode) { switch (mode) {