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Fix alignment problems causing crashes when nodes holding a pointers were used

master
Marc Gilleron 2020-07-07 18:55:05 +01:00
parent 709ebbe056
commit 3deb90b467
2 changed files with 196 additions and 170 deletions
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365
generators/graph/voxel_graph_runtime.cpp
View File

@ -33,10 +33,144 @@ inline const T &read(const std::vector<uint8_t> &mem, uint32_t &p) {
return *v;
}
template <typename T>
T &get_or_create(std::vector<uint8_t> &program, uint32_t offset) {
CRASH_COND(offset >= program.size());
const size_t required_size = offset + sizeof(T);
if (required_size >= program.size()) {
program.resize(required_size);
}
return *(T *)&program[offset];
}
inline float get_pixel_repeat(Image &im, int x, int y) {
return im.get_pixel(wrap(x, im.get_width()), wrap(y, im.get_height())).r;
}
// Runtime data structs:
// The order of fields in the following structs matters.
// They map the layout produced by the compilation.
// Inputs go first, then outputs, then params (if applicable at runtime).
struct PNodeBinop {
uint16_t a_i0;
uint16_t a_i1;
uint16_t a_out;
};
struct PNodeMonop {
uint16_t a_in;
uint16_t a_out;
};
struct PNodeDistance2D {
uint16_t a_x0;
uint16_t a_y0;
uint16_t a_x1;
uint16_t a_y1;
uint16_t a_out;
};
struct PNodeDistance3D {
uint16_t a_x0;
uint16_t a_y0;
uint16_t a_z0;
uint16_t a_x1;
uint16_t a_y1;
uint16_t a_z1;
uint16_t a_out;
};
struct PNodeClamp {
uint16_t a_x;
uint16_t a_out;
float p_min;
float p_max;
};
struct PNodeMix {
uint16_t a_i0;
uint16_t a_i1;
uint16_t a_ratio;
uint16_t a_out;
};
struct PNodeRemap {
uint16_t a_x;
uint16_t a_out;
float p_c0;
float p_m0;
float p_c1;
float p_m1;
};
struct PNodeSmoothstep {
uint16_t a_x;
uint16_t a_out;
float p_edge0;
float p_edge1;
};
struct PNodeCurve {
uint16_t a_in;
uint16_t a_out;
uint8_t is_monotonic_increasing;
float min_value;
float max_value;
Curve *p_curve;
};
struct PNodeNoise2D {
uint16_t a_x;
uint16_t a_y;
uint16_t a_out;
OpenSimplexNoise *p_noise;
};
struct PNodeNoise3D {
uint16_t a_x;
uint16_t a_y;
uint16_t a_z;
uint16_t a_out;
OpenSimplexNoise *p_noise;
};
struct PNodeImage2D {
uint16_t a_x;
uint16_t a_y;
uint16_t a_out;
float min_value;
float max_value;
Image *p_image;
};
struct PNodeSdfBox {
uint16_t a_x;
uint16_t a_y;
uint16_t a_z;
uint16_t a_sx;
uint16_t a_sy;
uint16_t a_sz;
uint16_t a_out;
};
struct PNodeSdfSphere {
uint16_t a_x;
uint16_t a_y;
uint16_t a_z;
uint16_t a_r;
uint16_t a_out;
};
struct PNodeSdfTorus {
uint16_t a_x;
uint16_t a_y;
uint16_t a_z;
uint16_t a_r0;
uint16_t a_r1;
uint16_t a_out;
};
VoxelGraphRuntime::VoxelGraphRuntime() {
clear();
}
@ -185,6 +319,10 @@ void VoxelGraphRuntime::compile(const ProgramGraph &graph) {
// Add actual operation
CRASH_COND(node->type_id > 0xff);
append(program, static_cast<uint8_t>(node->type_id));
const size_t offset = program.size();
// Inputs and outputs use a convention so we can have generic code for them.
// Parameters are more specific, and may be affected by alignment so better just do them by hand
// Add inputs
for (size_t j = 0; j < type.inputs.size(); ++j) {
@ -220,58 +358,67 @@ void VoxelGraphRuntime::compile(const ProgramGraph &graph) {
append(program, a);
}
// Add special params
// Add params (only nodes having some)
switch (node->type_id) {
case VoxelGeneratorGraph::NODE_CURVE: {
Ref<Curve> curve = node->params[0];
CRASH_COND(curve.is_null());
uint8_t is_monotonic_increasing;
Interval range = get_curve_range(**curve, is_monotonic_increasing);
append(program, is_monotonic_increasing);
append(program, range.min);
append(program, range.max);
append(program, *curve);
} break;
case VoxelGeneratorGraph::NODE_IMAGE_2D: {
Ref<Image> im = node->params[0];
CRASH_COND(im.is_null());
Interval range = get_heightmap_range(**im);
append(program, range.min);
append(program, range.max);
append(program, *im);
} break;
case VoxelGeneratorGraph::NODE_NOISE_2D:
case VoxelGeneratorGraph::NODE_NOISE_3D: {
Ref<OpenSimplexNoise> noise = node->params[0];
CRASH_COND(noise.is_null());
append(program, *noise);
} break;
case VoxelGeneratorGraph::NODE_CLAMP: {
// TODO Worth it?
case VoxelGeneratorGraph::NODE_CLAMP:
append(program, node->params[0].operator float());
append(program, node->params[1].operator float());
break;
PNodeClamp &n = get_or_create<PNodeClamp>(program, offset);
n.p_min = node->params[0].operator float();
n.p_max = node->params[1].operator float();
} break;
case VoxelGeneratorGraph::NODE_REMAP: {
float min0 = node->params[0].operator float();
float max0 = node->params[1].operator float();
float min1 = node->params[2].operator float();
float max1 = node->params[3].operator float();
append(program, -min0);
append(program, Math::is_equal_approx(max0, min0) ? 99999.f : 1.f / (max0 - min0));
append(program, min1);
append(program, max1 - min1);
PNodeRemap &n = get_or_create<PNodeRemap>(program, offset);
const float min0 = node->params[0].operator float();
const float max0 = node->params[1].operator float();
const float min1 = node->params[2].operator float();
const float max1 = node->params[3].operator float();
n.p_c0 = -min0;
n.p_m0 = Math::is_equal_approx(max0, min0) ? 99999.f : 1.f / (max0 - min0);
n.p_c1 = min1;
n.p_m1 = max1 - min1;
} break;
case VoxelGeneratorGraph::NODE_SMOOTHSTEP: {
float edge0 = node->params[0].operator float();
float edge1 = node->params[1].operator float();
append(program, edge0);
append(program, edge1);
PNodeSmoothstep &n = get_or_create<PNodeSmoothstep>(program, offset);
n.p_edge0 = node->params[0].operator float();
n.p_edge1 = node->params[1].operator float();
} break;
case VoxelGeneratorGraph::NODE_CURVE: {
PNodeCurve &n = get_or_create<PNodeCurve>(program, offset);
Ref<Curve> curve = node->params[0];
CRASH_COND(curve.is_null());
uint8_t is_monotonic_increasing;
const Interval range = get_curve_range(**curve, is_monotonic_increasing);
n.is_monotonic_increasing = is_monotonic_increasing;
n.min_value = range.min;
n.max_value = range.max;
n.p_curve = *curve;
} break;
case VoxelGeneratorGraph::NODE_NOISE_2D: {
PNodeNoise2D &n = get_or_create<PNodeNoise2D>(program, offset);
Ref<OpenSimplexNoise> noise = node->params[0];
CRASH_COND(noise.is_null());
n.p_noise = *noise;
} break;
case VoxelGeneratorGraph::NODE_NOISE_3D: {
PNodeNoise3D &n = get_or_create<PNodeNoise3D>(program, offset);
Ref<OpenSimplexNoise> noise = node->params[0];
CRASH_COND(noise.is_null());
n.p_noise = *noise;
} break;
case VoxelGeneratorGraph::NODE_IMAGE_2D: {
PNodeImage2D &n = get_or_create<PNodeImage2D>(program, offset);
Ref<Image> im = node->params[0];
CRASH_COND(im.is_null());
const Interval range = get_heightmap_range(**im);
n.min_value = range.min;
n.max_value = range.max;
n.p_image = *im;
} break;
} // switch special params
@ -305,130 +452,6 @@ void VoxelGraphRuntime::compile(const ProgramGraph &graph) {
CRASH_COND(!has_output);
}
// The order of fields in the following structs matters.
// They map the layout produced by the compilation.
// Inputs go first, then outputs, then params (if applicable at runtime).
// TODO Think about alignment
struct PNodeBinop {
uint16_t a_i0;
uint16_t a_i1;
uint16_t a_out;
};
struct PNodeMonop {
uint16_t a_in;
uint16_t a_out;
};
struct PNodeDistance2D {
uint16_t a_x0;
uint16_t a_y0;
uint16_t a_x1;
uint16_t a_y1;
uint16_t a_out;
};
struct PNodeDistance3D {
uint16_t a_x0;
uint16_t a_y0;
uint16_t a_z0;
uint16_t a_x1;
uint16_t a_y1;
uint16_t a_z1;
uint16_t a_out;
};
struct PNodeClamp {
uint16_t a_x;
uint16_t a_out;
float p_min;
float p_max;
};
struct PNodeMix {
uint16_t a_i0;
uint16_t a_i1;
uint16_t a_ratio;
uint16_t a_out;
};
struct PNodeRemap {
uint16_t a_x;
uint16_t a_out;
float p_c0;
float p_m0;
float p_c1;
float p_m1;
};
struct PNodeSmoothstep {
uint16_t a_x;
uint16_t a_out;
float p_edge0;
float p_edge1;
};
struct PNodeCurve {
uint16_t a_in;
uint16_t a_out;
uint8_t is_monotonic_increasing;
float min_value;
float max_value;
Curve *p_curve;
};
struct PNodeNoise2D {
uint16_t a_x;
uint16_t a_y;
uint16_t a_out;
OpenSimplexNoise *p_noise;
};
struct PNodeNoise3D {
uint16_t a_x;
uint16_t a_y;
uint16_t a_z;
uint16_t a_out;
OpenSimplexNoise *p_noise;
};
struct PNodeImage2D {
uint16_t a_x;
uint16_t a_y;
uint16_t a_out;
float min_value;
float max_value;
Image *p_image;
};
struct PNodeSdfBox {
uint16_t a_x;
uint16_t a_y;
uint16_t a_z;
uint16_t a_sx;
uint16_t a_sy;
uint16_t a_sz;
uint16_t a_out;
};
struct PNodeSdfSphere {
uint16_t a_x;
uint16_t a_y;
uint16_t a_z;
uint16_t a_r;
uint16_t a_out;
};
struct PNodeSdfTorus {
uint16_t a_x;
uint16_t a_y;
uint16_t a_z;
uint16_t a_r0;
uint16_t a_r1;
uint16_t a_out;
};
inline Interval get_length(const Interval &x, const Interval &y) {
return sqrt(x * x + y * y);
}
@ -446,7 +469,9 @@ inline float sdf_box(const Vector3 pos, const Vector3 extents) {
Vector3(max(d.x, 0.f), max(d.y, 0.f), max(d.z, 0.f)).length();
}
inline Interval sdf_box(const Interval &x, const Interval &y, const Interval &z, const Interval &sx, const Interval &sy, const Interval &sz) {
inline Interval sdf_box(
const Interval &x, const Interval &y, const Interval &z,
const Interval &sx, const Interval &sy, const Interval &sz) {
Interval dx = abs(x) - sx;
Interval dy = abs(y) - sy;
Interval dz = abs(z) - sz;

1
generators/graph/voxel_graph_runtime.h
View File

@ -5,6 +5,7 @@
#include "../../math/vector3i.h"
#include "program_graph.h"
// CPU VM to execute a voxel graph generator
class VoxelGraphRuntime {
public:
VoxelGraphRuntime();