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tiny_bvh_fenster: Output frame times to stderr. #11

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tiny_bvh_fenster: Output frame times to stderr. #11

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13 changes: 12 additions & 1 deletion tiny_bvh_fenster.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,9 @@ bvhvec4 triangles[259 /* level 3 */ * 6 * 2 * 49 * 3]{};
int verts = 0;
BVH bvh;

static int frame_num;
static uint64_t frame_time_total;

void sphere_flake( float x, float y, float z, float s, int d = 0 )
{
// procedural tesselated sphere flake object
Expand Down Expand Up @@ -42,6 +45,7 @@ void Init()

void Tick( uint32_t* buf )
{
uint64_t frame_start_time = fenster_time();
// setup camera
bvhvec3 eye( -3.5f, -1.5f, -6.5f ), view = normalize( bvhvec3( 3, 1.5f, 5 ) );
bvhvec3 right = normalize( cross( bvhvec3( 0, 1, 0 ), view ) );
Expand Down Expand Up @@ -78,4 +82,11 @@ void Tick( uint32_t* buf )
int c = (int)(15.9f * avg);
buf[x + y * SCRWIDTH] = c + (c << 8) + (c << 16);
}
}
uint64_t frame_time = fenster_time() - frame_start_time;
frame_time_total += frame_time;
++frame_num;
fprintf(stderr, "Frame %d time: %d ms, avg: %.2f ms\n", frame_num,
(int)(frame_time),
(float)(frame_time_total / (float)frame_num)
);
}
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