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Finish dod and set perf testing

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Abdelrahman Said
2025-05-18 19:03:36 +01:00
parent 66b366183d
commit fc20602531
5 changed files with 114 additions and 57 deletions
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11
Makefile
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@@ -1,13 +1,6 @@
BUILD_TYPE = debug
CC = clang
CFLAGS = -Iraylib/include -Iwapp/src
LDFLAGS = '-Wl,-rpath,$$ORIGIN/raylib/lib' -Lraylib/lib -lraylib
ifeq ($(BUILD_TYPE),debug)
CFLAGS += -g
else
CFLAGS += -O3 -DNDEBUG
endif
CFLAGS = -g -O3 -Iraylib/include -Iwapp/src
LDFLAGS = '-Wl,-rpath,$$ORIGIN/raylib/lib' -Lraylib/lib -lraylib -lprofiler
.PHONY: all raylib no_dod dod

116
dod.c
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@@ -7,15 +7,15 @@
#include <string.h>
enum EntityTag {
ENTITY_TAG_MOVABLE = 1 << 0,
ENTITY_TAG_RENDERABLE = 1 << 1,
ENTITY_TAG_COLLIDER = 1 << 2,
ENTITY_TAG_MOVABLE = 1 << 0,
ENTITY_TAG_RENDERABLE = 1 << 1,
ENTITY_TAG_COLLIDER = 1 << 2,
ENTITY_TAG_INSIDE_ZONE = 1 << 3,
};
typedef struct Entity Entity;
struct Entity {
u16 id;
u8 tag;
};
typedef struct Position Position;
@@ -30,6 +30,12 @@ struct Scale {
f32 height;
};
typedef struct Rect Rect;
struct Rect {
Position position;
Scale scale;
};
typedef struct Velocity Velocity;
struct Velocity {
f32 x;
@@ -39,9 +45,9 @@ struct Velocity {
typedef struct Manager Manager;
struct Manager {
Entity *entities;
Position *positions;
Scale *scales;
Rect *rects;
Velocity *velocities;
u8 *tags;
u64 count;
};
@@ -55,12 +61,14 @@ void init_scale_wanderer(Scale *scale, XOR256State *state);
void init_scale_zone(Scale *scale, XOR256State *state);
void init_velocity(Velocity *velocity, XOR256State *state);
void zero_velocity(Velocity *velocity, XOR256State *state);
void update_positions(Position *positions, Scale *scales, Velocity *velocities, u64 count);
void get_colliders();
void render_entities(const Entity *entities, const Position *positions, const Scale *scales, u64 count);
void check_collisions(u8 *tags, Rect *rects, u64 count);
void update_positions(const u8 *tags, Rect *rects, Velocity *velocities, u64 count);
void render_entities(const u8 *tags, const Rect *rects, u64 count);
u64 collides(const Rect *rect, const Rect *collider);
f32 get_random_float(XOR256State *state);
int main(void) {
SetTraceLogLevel(LOG_NONE);
InitWindow(WIDTH, HEIGHT, "DOD test");
SetTargetFPS(120);
@@ -79,15 +87,10 @@ int main(void) {
u8 is_zone = i < ZONE_COUNT;
manager.entities[i].id = i;
manager.entities[i].tag = (ENTITY_TAG_COLLIDER & (is_zone << 2)) | ENTITY_TAG_MOVABLE;
#ifndef NDEBUG
manager.entities[i].tag |= ENTITY_TAG_RENDERABLE;
#else
manager.entities[i].tag |= ENTITY_TAG_RENDERABLE & ~(is_zone << 1);
#endif
manager.tags[i] = (ENTITY_TAG_COLLIDER & (is_zone << 2)) | ENTITY_TAG_MOVABLE | ENTITY_TAG_RENDERABLE;
init_position(&(manager.positions[i]), &state);
scale_initialisers[is_zone](&(manager.scales[i]), &state);
init_position(&(manager.rects[i].position), &state);
scale_initialisers[is_zone](&(manager.rects[i].scale), &state);
velocity_initialisers[is_zone](&(manager.velocities[i]), &state);
}
@@ -97,13 +100,15 @@ int main(void) {
break;
}
update_positions(manager.positions, manager.scales, manager.velocities, manager.count);
check_collisions(manager.tags, manager.rects, manager.count);
update_positions(manager.tags, manager.rects, manager.velocities, manager.count);
BeginDrawing();
ClearBackground(BG_COLOR);
render_entities(manager.entities, manager.positions, manager.scales, manager.count);
render_entities(manager.tags, manager.rects, manager.count);
DrawFPS(10, 10);
@@ -122,10 +127,10 @@ void init_manager(const Allocator *allocator, Manager *manager) {
u64 total_count = (u64)WANDERER_COUNT + (u64)ZONE_COUNT;
u64 entities_size = sizeof(Entity) * total_count;
u64 positions_size = sizeof(Position) * total_count;
u64 scales_size = sizeof(Scale) * total_count;
u64 rects_size = sizeof(Rect) * total_count;
u64 velocities_size = sizeof(Velocity) * total_count;
u64 allocation_size = entities_size + positions_size + scales_size + velocities_size;
u64 tags_size = sizeof(u8) * total_count;
u64 allocation_size = entities_size + rects_size + velocities_size + tags_size;
u8 *buffer = wapp_mem_allocator_alloc(allocator, allocation_size);
assert(buffer != NULL);
@@ -133,9 +138,9 @@ void init_manager(const Allocator *allocator, Manager *manager) {
memset(buffer, 0, allocation_size);
manager->entities = (Entity *)buffer;
manager->positions = (Position *)(buffer + entities_size);
manager->scales = (Scale *)(buffer + entities_size + positions_size);
manager->velocities = (Velocity *)(buffer + entities_size + positions_size + scales_size);
manager->rects = (Rect *)(buffer + entities_size);
manager->velocities = (Velocity *)(buffer + entities_size + rects_size);
manager->tags = (u8 *)(buffer + entities_size + rects_size + velocities_size);
manager->count = total_count;
}
@@ -165,37 +170,74 @@ void zero_velocity(Velocity *velocity, XOR256State *state) {
velocity->y = 0.0f;
}
void update_positions(Position *positions, Scale *scales, Velocity *velocities, u64 count) {
void update_positions(const u8 *tags, Rect *rects, Velocity *velocities, u64 count) {
u8 index = 0;
f32 multipliers[2] = {1.0f, 0.5f};
for (u64 i = 0; i < count; ++i) {
positions[i].x += velocities[i].x;
positions[i].y += velocities[i].y;
index = (tags[i] & ENTITY_TAG_INSIDE_ZONE) == ENTITY_TAG_INSIDE_ZONE;
f32 max_x = WIDTH - scales[i].width;
f32 max_y = HEIGHT - scales[i].height;
rects[i].position.x += velocities[i].x * multipliers[index];
rects[i].position.y += velocities[i].y * multipliers[index];
if (positions[i].x < 0 || positions[i].x >= max_x) {
positions[i].x = min(max(positions[i].x, 0), max_x);
f32 max_x = WIDTH - rects[i].scale.width;
f32 max_y = HEIGHT - rects[i].scale.height;
if (rects[i].position.x < 0 || rects[i].position.x >= max_x) {
rects[i].position.x = min(max(rects[i].position.x, 0), max_x);
velocities[i].x *= -1;
}
if (positions[i].y < 0 || positions[i].y >= max_y) {
positions[i].y = min(max(positions[i].y, 0), max_y);
if (rects[i].position.y < 0 || rects[i].position.y >= max_y) {
rects[i].position.y = min(max(rects[i].position.y, 0), max_y);
velocities[i].y *= -1;
}
}
}
void render_entities(const Entity *entities, const Position *positions, const Scale *scales, u64 count) {
void check_collisions(u8 *tags, Rect *rects, u64 count) {
persistent u64 inside_zone_mask = 0x7;
for (u64 i = ZONE_COUNT; i < count; ++i) {
tags[i] &= inside_zone_mask;
for (u64 j = 0; j < ZONE_COUNT; ++j) {
tags[i] |= collides(&rects[i], &rects[j]) << 3;
}
}
}
void render_entities(const u8 *tags, const Rect *rects, u64 count) {
persistent RaylibDrawRectFunc renderers[2] = {DrawRectangle, DrawRectangleLines};
persistent Color colors[2] = {FG_COLOR, ZONE_COLOR};
for (u64 i = 0; i < count; ++i) {
u64 is_collider = (entities[i].tag & ENTITY_TAG_COLLIDER) == ENTITY_TAG_COLLIDER;
u8 func_index = (tags[i] & ENTITY_TAG_COLLIDER) == ENTITY_TAG_COLLIDER;
u8 color_index = func_index || (tags[i] & ENTITY_TAG_INSIDE_ZONE) == ENTITY_TAG_INSIDE_ZONE;
renderers[is_collider](positions[i].x, positions[i].y, scales[i].width, scales[i].height, colors[is_collider]);
renderers[func_index](
rects[i].position.x,
rects[i].position.y,
rects[i].scale.width,
rects[i].scale.height,
colors[color_index]
);
}
}
u64 collides(const Rect *rect, const Rect *collider) {
f32 rect_min_x = rect->position.x + rect->scale.width;
f32 rect_min_y = rect->position.y + rect->scale.height;
f32 rect_max_x = rect->position.x;
f32 rect_max_y = rect->position.y;
f32 zone_x0 = collider->position.x;
f32 zone_y0 = collider->position.y;
f32 zone_x1 = collider->position.x + collider->scale.width;
f32 zone_y1 = collider->position.y + collider->scale.height;
return (u64)(rect_min_x > zone_x0 && rect_min_y > zone_y0 &&
rect_max_x < zone_x1 && rect_max_y < zone_y1);
}
f32 get_random_float(XOR256State *state) {
i64 random = (i64)wapp_prng_xorshift_256(state) - INT64_MAX;
return (f32)(random) / (f32)(INT64_MAX);

10
no_dod.c
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@@ -1,3 +1,4 @@
#include "raylib-src/src/raylib.h"
#include "wapp.h"
#include "common.h"
#include "raylib.h"
@@ -42,15 +43,14 @@ void move_wanderer(Wanderer *wanderer, const SlowZone *zones);
void render_wanderer(const Wanderer *wanderer);
void init_slow_zone(SlowZone *zone, XOR256State *state);
#ifndef NDEBUG
void render_slow_zone(const SlowZone *zone);
#endif
bool inside_zone(const Wanderer *wanderer, const SlowZone *zone);
f32 get_random_float(XOR256State *state);
int main(void) {
InitWindow(WIDTH, HEIGHT, "DOD test");
SetTraceLogLevel(LOG_NONE);
InitWindow(WIDTH, HEIGHT, "No-DOD test");
SetTargetFPS(120);
Allocator arena = wapp_mem_arena_allocator_init(MB(20));
@@ -85,11 +85,9 @@ int main(void) {
ClearBackground(BG_COLOR);
#ifndef NDEBUG
for (u64 i = 0; i < ZONE_COUNT; ++i) {
render_slow_zone(&(zones[i]));
}
#endif
for (u64 i = 0; i < WANDERER_COUNT; ++i) {
render_wanderer(&(wanderers[i]));
@@ -183,7 +181,6 @@ void init_slow_zone(SlowZone *zone, XOR256State *state) {
};
}
#ifndef NDEBUG
void render_slow_zone(const SlowZone *zone) {
DrawRectangleLines(
zone->position.x,
@@ -193,7 +190,6 @@ void render_slow_zone(const SlowZone *zone) {
ZONE_COLOR
);
}
#endif
bool inside_zone(const Wanderer *wanderer, const SlowZone *zone) {
f32 wanderer_min_x = wanderer->position.x + wanderer->scale.width;

30
run_perf Executable file
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@@ -0,0 +1,30 @@
#!/bin/bash
REPEATS=10
EVENTS="branches,\
branch-misses,\
bus-cycles,\
cache-references,\
cache-misses,\
L1-dcache-load-misses,\
L1-icache-load-misses,\
LLC-load-misses,\
LLC-store-misses,\
icache.misses,\
ref-cycles,\
cycles,\
instructions,\
alignment-faults,\
cgroup-switches,\
context-switches,\
cpu-clock,\
cpu-migrations,\
emulation-faults,\
page-faults,\
major-faults,\
minor-faults,\
task-clock"
perf stat -e $EVENTS -r $REPEATS -o no_dod_stats ./no_dod
perf stat -e $EVENTS -r $REPEATS -o dod_stats ./dod

4
test
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@@ -1,4 +0,0 @@
#!/bin/bash
./build $@
./no_dod