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shadow_volume: correct last_in_volume

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This commit is contained in:
Zack Buhman 2025-05-28 10:16:04 -05:00
parent c257640b0d
commit 212233c847
4 changed files with 3226 additions and 3204 deletions
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19
example/example.mk
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@ -1166,3 +1166,22 @@ SHADOW_VOLUME_OBJ = \
example/shadow_volume.elf: LDSCRIPT = $(LIB)/main.lds
example/shadow_volume.elf: $(START_OBJ) $(SHADOW_VOLUME_OBJ)
SHADOW_VOLUME2_OBJ = \
example/shadow_volume2.o \
holly/core.o \
holly/region_array.o \
holly/background.o \
holly/ta_fifo_polygon_converter.o \
holly/video_output.o \
sh7091/serial.o \
maple/maple.o \
sh7091/c_serial.o \
printf/printf.o \
printf/unparse.o \
printf/parse.o \
shadow_volume.o \
$(LIBGCC)
example/shadow_volume2.elf: LDSCRIPT = $(LIB)/main.lds
example/shadow_volume2.elf: $(START_OBJ) $(SHADOW_VOLUME2_OBJ)

BIN
model/torus.blend
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6406
model/torus.h
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File diff suppressed because it is too large Load Diff

5
shadow_volume.cpp
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@ -163,6 +163,7 @@ void shadow_volume_mesh_rays(const vec3 * position,
const vec3 * cast_position,
const int * edge_loop,
const int edge_loop_length,
bool last_edge_loop,
void(*render_quad)(vec3 a, vec3 b, vec3 c, vec3 d, bool l))
{
for (int i = 0; i < edge_loop_length; i++) {
@ -177,7 +178,7 @@ void shadow_volume_mesh_rays(const vec3 * position,
vec3 c = cast_position[i2];
vec3 d = cast_position[i1];
bool last_in_volume = (i == (edge_loop_length - 1));
bool last_in_volume = last_edge_loop && (i == (edge_loop_length - 1));
render_quad(a, b, c, d, last_in_volume);
}
}
@ -254,10 +255,12 @@ void shadow_volume_mesh(const vec3 light,
for (int i = 0; i < edge_loop_count; i++) {
int edge_loop_length = edge_loop_lengths[i];
int * edge_loop = &edge_loops[edge_loop_ix];
bool last = i == (edge_loop_count - 1);
shadow_volume_mesh_rays(position,
cast_position,
edge_loop,
edge_loop_length,
last,
render_quad);
edge_loop_ix += edge_loop_length;
}