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impl point scissor clipping

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This commit is contained in:
Bigfoot71 2025-03-22 15:57:12 +01:00
parent 633e34e457
commit 2f9eb5b727
1 changed files with 60 additions and 20 deletions
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60
src/external/rlsw.h vendored
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@ -2315,23 +2315,37 @@ static inline bool sw_point_project_and_clip(sw_vertex_t* v)
sw_project_ndc_to_screen(v->screen, v->homogeneous); sw_project_ndc_to_screen(v->screen, v->homogeneous);
return v->screen[0] - RLSW.pointRadius >= RLSW.vpMin[0] const int *min, *max;
&& v->screen[1] - RLSW.pointRadius >= RLSW.vpMin[1]
&& v->screen[0] + RLSW.pointRadius <= RLSW.vpMax[0] if (RLSW.stateFlags & SW_STATE_SCISSOR_TEST) {
&& v->screen[1] + RLSW.pointRadius <= RLSW.vpMax[1]; min = RLSW.scMin;
max = RLSW.scMax;
} else {
min = RLSW.vpMin;
max = RLSW.vpMax;
}
bool insideX = v->screen[0] - RLSW.pointRadius < max[0]
&& v->screen[0] + RLSW.pointRadius > min[0];
bool insideY = v->screen[1] - RLSW.pointRadius < max[1]
&& v->screen[1] + RLSW.pointRadius > min[1];
return insideX && insideY;
} }
#define DEFINE_POINT_RASTER(FUNC_NAME, ENABLE_DEPTH_TEST, ENABLE_COLOR_BLEND, CHECK_BOUNDS) \ #define DEFINE_POINT_RASTER(FUNC_NAME, ENABLE_DEPTH_TEST, ENABLE_COLOR_BLEND, CHECK_BOUNDS) \
static inline void FUNC_NAME(int x, int y, float z, float color[4]) \ static inline void FUNC_NAME(int x, int y, float z, float color[4]) \
{ \ { \
if (CHECK_BOUNDS) \ if (CHECK_BOUNDS == 1) \
{ \ { \
if (x < 0 || x >= RLSW.framebuffer.width) { \ if (x < RLSW.vpMin[0] || x > RLSW.vpMax[0]) return; \
return; \ if (y < RLSW.vpMin[1] || y > RLSW.vpMax[1]) return; \
} \
if (y < 0 || y >= RLSW.framebuffer.height) { \
return; \
} \ } \
else if (CHECK_BOUNDS == SW_SCISSOR_TEST) \
{ \
if (x < RLSW.scMin[0] || x > RLSW.scMax[0]) return; \
if (y < RLSW.scMin[1] || y > RLSW.scMax[1]) return; \
} \ } \
\ \
int offset = y * RLSW.framebuffer.width + x; \ int offset = y * RLSW.framebuffer.width + x; \
@ -2408,11 +2422,21 @@ DEFINE_POINT_RASTER(sw_point_raster_DEPTH_CHECK, 1, 0, 1)
DEFINE_POINT_RASTER(sw_point_raster_BLEND_CHECK, 0, 1, 1) DEFINE_POINT_RASTER(sw_point_raster_BLEND_CHECK, 0, 1, 1)
DEFINE_POINT_RASTER(sw_point_raster_DEPTH_BLEND_CHECK, 1, 1, 1) DEFINE_POINT_RASTER(sw_point_raster_DEPTH_BLEND_CHECK, 1, 1, 1)
DEFINE_POINT_RASTER(sw_point_raster_CHECK_SCISSOR, 0, 0, SW_SCISSOR_TEST)
DEFINE_POINT_RASTER(sw_point_raster_DEPTH_CHECK_SCISSOR, 1, 0, SW_SCISSOR_TEST)
DEFINE_POINT_RASTER(sw_point_raster_BLEND_CHECK_SCISSOR, 0, 1, SW_SCISSOR_TEST)
DEFINE_POINT_RASTER(sw_point_raster_DEPTH_BLEND_CHECK_SCISSOR, 1, 1, SW_SCISSOR_TEST)
DEFINE_POINT_THICK_RASTER(sw_point_thick_raster, sw_point_raster_CHECK) DEFINE_POINT_THICK_RASTER(sw_point_thick_raster, sw_point_raster_CHECK)
DEFINE_POINT_THICK_RASTER(sw_point_thick_raster_DEPTH, sw_point_raster_DEPTH_CHECK) DEFINE_POINT_THICK_RASTER(sw_point_thick_raster_DEPTH, sw_point_raster_DEPTH_CHECK)
DEFINE_POINT_THICK_RASTER(sw_point_thick_raster_BLEND, sw_point_raster_BLEND_CHECK) DEFINE_POINT_THICK_RASTER(sw_point_thick_raster_BLEND, sw_point_raster_BLEND_CHECK)
DEFINE_POINT_THICK_RASTER(sw_point_thick_raster_DEPTH_BLEND, sw_point_raster_DEPTH_BLEND_CHECK) DEFINE_POINT_THICK_RASTER(sw_point_thick_raster_DEPTH_BLEND, sw_point_raster_DEPTH_BLEND_CHECK)
DEFINE_POINT_THICK_RASTER(sw_point_thick_raster_SCISSOR, sw_point_raster_CHECK_SCISSOR)
DEFINE_POINT_THICK_RASTER(sw_point_thick_raster_DEPTH_SCISSOR, sw_point_raster_DEPTH_CHECK_SCISSOR)
DEFINE_POINT_THICK_RASTER(sw_point_thick_raster_BLEND_SCISSOR, sw_point_raster_BLEND_CHECK_SCISSOR)
DEFINE_POINT_THICK_RASTER(sw_point_thick_raster_DEPTH_BLEND_SCISSOR, sw_point_raster_DEPTH_BLEND_CHECK_SCISSOR)
static inline void sw_point_render(sw_vertex_t* v) static inline void sw_point_render(sw_vertex_t* v)
{ {
if (!sw_point_project_and_clip(v)) { if (!sw_point_project_and_clip(v)) {
@ -2420,6 +2444,21 @@ static inline void sw_point_render(sw_vertex_t* v)
} }
if (RLSW.pointRadius >= 1.0f) { if (RLSW.pointRadius >= 1.0f) {
if (SW_STATE_CHECK(SW_STATE_SCISSOR_TEST)) {
if (SW_STATE_CHECK(SW_STATE_DEPTH_TEST | SW_STATE_BLEND)) {
sw_point_thick_raster_DEPTH_BLEND_SCISSOR(v);
}
else if (SW_STATE_CHECK(SW_STATE_BLEND)) {
sw_point_thick_raster_BLEND_SCISSOR(v);
}
else if (SW_STATE_CHECK(SW_STATE_DEPTH_TEST)) {
sw_point_thick_raster_DEPTH_SCISSOR(v);
}
else {
sw_point_thick_raster_SCISSOR(v);
}
}
else {
if (SW_STATE_CHECK(SW_STATE_DEPTH_TEST | SW_STATE_BLEND)) { if (SW_STATE_CHECK(SW_STATE_DEPTH_TEST | SW_STATE_BLEND)) {
sw_point_thick_raster_DEPTH_BLEND(v); sw_point_thick_raster_DEPTH_BLEND(v);
} }
@ -2433,6 +2472,7 @@ static inline void sw_point_render(sw_vertex_t* v)
sw_point_thick_raster(v); sw_point_thick_raster(v);
} }
} }
}
else { else {
if (SW_STATE_CHECK(SW_STATE_DEPTH_TEST | SW_STATE_BLEND)) { if (SW_STATE_CHECK(SW_STATE_DEPTH_TEST | SW_STATE_BLEND)) {
sw_point_raster_DEPTH_BLEND( sw_point_raster_DEPTH_BLEND(