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+fix

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This commit is contained in:
Evghenii
2013-11-14 23:05:44 +01:00
parent 86652738c0
commit 53bf4573f0
1 changed files with 41 additions and 91 deletions
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132
examples_cuda/rt/rt.ispc
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@@ -33,30 +33,11 @@
#define bool int
#ifdef __NVPTX__
#warning "emitting DEVICE code"
#define programCount warpSize()
#define programIndex laneIndex()
#define taskIndex blockIndex0()
#define taskCount blockCount0()
#else
#warning "emitting HOST code"
#endif
typedef float<3> float3;
#if 0
#define DIRISNEG
#endif
struct Ray {
float3 origin, dir, invDir;
#ifdef DIRISNEG /* this fails to compile with nvvm */
uniform unsigned int dirIsNeg[3];
#else
unsigned int dirIsNeg0, dirIsNeg1, dirIsNeg2;
#endif
float mint, maxt;
int hitId;
};
@@ -90,7 +71,7 @@ static inline float Dot(const float3 a, const float3 b) {
}
static inline void generateRay(uniform const float raster2camera[4][4],
static void generateRay(uniform const float raster2camera[4][4],
uniform const float camera2world[4][4],
float x, float y, Ray &ray) {
ray.mint = 0.f;
@@ -120,19 +101,13 @@ static inline void generateRay(uniform const float raster2camera[4][4],
ray.invDir = 1.f / ray.dir;
#ifdef DIRISNEG
ray.dirIsNeg[0] = any(ray.invDir.x < 0) ? 1 : 0;
ray.dirIsNeg[1] = any(ray.invDir.y < 0) ? 1 : 0;
ray.dirIsNeg[2] = any(ray.invDir.z < 0) ? 1 : 0;
#else
ray.dirIsNeg0 = any(ray.invDir.x < 0) ? 1 : 0;
ray.dirIsNeg1 = any(ray.invDir.y < 0) ? 1 : 0;
ray.dirIsNeg2 = any(ray.invDir.z < 0) ? 1 : 0;
#endif
}
static inline bool BBoxIntersect(const uniform float bounds[2][3],
static bool BBoxIntersect(const uniform float bounds[2][3],
const Ray &ray) {
uniform float3 bounds0 = { bounds[0][0], bounds[0][1], bounds[0][2] };
uniform float3 bounds1 = { bounds[1][0], bounds[1][1], bounds[1][2] };
@@ -171,7 +146,7 @@ static inline bool BBoxIntersect(const uniform float bounds[2][3],
static inline bool TriIntersect(const uniform Triangle &tri, Ray &ray) {
static bool TriIntersect(const uniform Triangle &tri, Ray &ray) {
uniform float3 p0 = { tri.p[0][0], tri.p[0][1], tri.p[0][2] };
uniform float3 p1 = { tri.p[1][0], tri.p[1][1], tri.p[1][2] };
uniform float3 p2 = { tri.p[2][0], tri.p[2][1], tri.p[2][2] };
@@ -211,7 +186,7 @@ static inline bool TriIntersect(const uniform Triangle &tri, Ray &ray) {
}
inline inline bool BVHIntersect(const uniform LinearBVHNode nodes[],
bool BVHIntersect(const uniform LinearBVHNode nodes[],
const uniform Triangle tris[], Ray &r) {
Ray ray = r;
bool hit = false;
@@ -219,62 +194,39 @@ inline inline bool BVHIntersect(const uniform LinearBVHNode nodes[],
uniform int todoOffset = 0, nodeNum = 0;
uniform int todo[64];
#define FAST
while (true) {
// Check ray against BVH node
uniform LinearBVHNode node = nodes[nodeNum];
if (any(BBoxIntersect(node.bounds, ray)))
{
if (any(BBoxIntersect(node.bounds, ray))) {
uniform unsigned int nPrimitives = node.nPrimitives;
if (nPrimitives > 0)
{
if (nPrimitives > 0) {
// Intersect ray with primitives in leaf BVH node
uniform unsigned int primitivesOffset = node.offset;
for (uniform unsigned int i = 0; i < nPrimitives; ++i) {
if (TriIntersect(tris[primitivesOffset+i], ray))
hit = true;
}
#ifndef FAST
if (todoOffset == 0)
break;
#endif
nodeNum = todo[--todoOffset];
}
else
{
else {
// Put far BVH node on _todo_ stack, advance to near node
#ifdef DIRISNEG
const int dirIsNeg = r.dirIsNeg[node.splitAxis];
#else
int dirIsNeg;
if (node.splitAxis == 0) dirIsNeg = r.dirIsNeg0;
if (node.splitAxis == 1) dirIsNeg = r.dirIsNeg1;
if (node.splitAxis == 2) dirIsNeg = r.dirIsNeg2;
#endif
if (dirIsNeg)
{
if (r.dirIsNeg[node.splitAxis]) {
todo[todoOffset++] = nodeNum + 1;
nodeNum = node.offset;
}
else
{
else {
todo[todoOffset++] = node.offset;
nodeNum = nodeNum + 1;
}
}
}
else {
#ifndef FAST
if (todoOffset == 0)
break;
#endif
nodeNum = todo[--todoOffset];
}
#ifdef FAST
if (todoOffset == 0)
break;
#endif
}
r.maxt = ray.maxt;
r.hitId = ray.hitId;
@@ -283,7 +235,7 @@ inline inline bool BVHIntersect(const uniform LinearBVHNode nodes[],
}
static inline void raytrace_tile(uniform int x0, uniform int x1,
static void raytrace_tile(uniform int x0, uniform int x1,
uniform int y0, uniform int y1,
uniform int width, uniform int height,
uniform int baseWidth, uniform int baseHeight,
@@ -295,15 +247,15 @@ static inline void raytrace_tile(uniform int x0, uniform int x1,
uniform float widthScale = (float)(baseWidth) / (float)(width);
uniform float heightScale = (float)(baseHeight) / (float)(height);
foreach_tiled (y = y0 ... y1, x = x0 ... x1)
{
Ray ray;
generateRay(raster2camera, camera2world, x*widthScale, y*heightScale, ray);
BVHIntersect(nodes, triangles, ray);
foreach_tiled (y = y0 ... y1, x = x0 ... x1) {
Ray ray;
generateRay(raster2camera, camera2world, x*widthScale,
y*heightScale, ray);
BVHIntersect(nodes, triangles, ray);
int offset = y * width + x;
image[offset] = ray.maxt;
id[offset] = ray.hitId;
int offset = y * width + x;
image[offset] = ray.maxt;
id[offset] = ray.hitId;
}
}
@@ -328,34 +280,32 @@ task void raytrace_tile_task(uniform int width, uniform int height,
uniform float image[], uniform int id[],
const uniform LinearBVHNode nodes[],
const uniform Triangle triangles[]) {
if (taskIndex >= taskCount) return;
uniform int dx = 32, dy = 16; // must match dx, dy below
uniform int xBuckets = (width + (dx-1)) / dx;
uniform int x0 = (taskIndex % xBuckets) * dx;
uniform int x1 = min(x0 + dx, width);
uniform int y0 = (taskIndex / xBuckets) * dy;
uniform int y1 = min(y0 + dy, height);
raytrace_tile(x0, x1, y0, y1, width, height, baseWidth, baseHeight,
raster2camera, camera2world, image,
id, nodes, triangles);
uniform int dx = 16, dy = 16; // must match dx, dy below
uniform int xBuckets = (width + (dx-1)) / dx;
uniform int x0 = (taskIndex % xBuckets) * dx;
uniform int x1 = min(x0 + dx, width);
uniform int y0 = (taskIndex / xBuckets) * dy;
uniform int y1 = min(y0 + dy, height);
raytrace_tile(x0, x1, y0, y1, width, height, baseWidth, baseHeight,
raster2camera, camera2world, image,
id, nodes, triangles);
}
export void raytrace_ispc_tasks(uniform int width, uniform int height,
uniform int baseWidth, uniform int baseHeight,
const uniform float raster2camera[4][4],
const uniform float camera2world[4][4],
uniform float image[], uniform int id[],
const uniform LinearBVHNode nodes[],
const uniform Triangle triangles[]) {
uniform int dx = 32, dy = 16;
uniform int xBuckets = (width + (dx-1)) / dx;
uniform int yBuckets = (height + (dy-1)) / dy;
uniform int nTasks = xBuckets * yBuckets;
launch[nTasks] raytrace_tile_task(width, height, baseWidth, baseHeight,
raster2camera, camera2world,
image, id, nodes, triangles);
uniform int baseWidth, uniform int baseHeight,
const uniform float raster2camera[4][4],
const uniform float camera2world[4][4],
uniform float image[], uniform int id[],
const uniform LinearBVHNode nodes[],
const uniform Triangle triangles[]) {
uniform int dx = 16, dy = 16;
uniform int xBuckets = (width + (dx-1)) / dx;
uniform int yBuckets = (height + (dy-1)) / dy;
uniform int nTasks = xBuckets * yBuckets;
launch[nTasks] raytrace_tile_task(width, height, baseWidth, baseHeight,
raster2camera, camera2world,
image, id, nodes, triangles);
}