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|
/*
* Copyright 2009, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
// This is the Soap Bubble sample / demo. It runs as a native client NPAPI
// plug-in.
#include <math.h>
#ifdef __native_client__
#include <sys/nacl_syscalls.h>
#else
#include "third_party/native_client/googleclient/native_client/src/trusted/desc/nrd_all_modules.h"
#endif
#include "command_buffer/common/cross/gapi_interface.h"
#include "command_buffer/common/cross/rpc_imc.h"
#include "command_buffer/client/cross/fenced_allocator.h"
#include "command_buffer/client/cross/cmd_buffer_helper.h"
#include "command_buffer/client/cross/buffer_sync_proxy.h"
#include "command_buffer/samples/bubble/utils.h"
#include "command_buffer/samples/bubble/iridescence_texture.h"
#include "command_buffer/samples/bubble/perlin_noise.h"
#include "third_party/vectormath/files/vectormathlibrary/include/vectormath/scalar/cpp/vectormath_aos.h" // NOLINT
#if OS_WIN
typedef unsigned __int64 uint64_t;
#endif
// Cube map data is hard-coded in cubemap.cc as a byte array.
// Format is 64x64xBRGA, D3D face ordering (+X, -X, +Y, -Y, +Z, -Z).
extern unsigned char g_cubemap_data[];
const unsigned int kCubeMapWidth = 64;
const unsigned int kCubeMapHeight = 64;
const unsigned int kCubeMapFaceSize = kCubeMapWidth * kCubeMapHeight * 4;
// Define this to debug command buffers: it will call Finish() and check for a
// parse error. If there was one, it will warn about it in the console window.
// #define DEBUG_CMD
#ifdef DEBUG_CMD
#define CHECK_ERROR(HELPER) do { \
HELPER->Finish(); \
BufferSyncInterface::ParseError error = \
HELPER->interface()->GetParseError(); \
if (error != BufferSyncInterface::kParseNoError) { \
printf("CMD error %d at %s:%d\n", error, __FILE__, __LINE__); \
} \
} while (false)
#else
#define CHECK_ERROR(HELPER) do { } while (false)
#endif
namespace Vectormath {
namespace Aos {
// Creates a perspective projection matrix.
Matrix4 CreatePerspectiveMatrix(float vertical_field_of_view_radians,
float aspect,
float z_near,
float z_far) {
float dz = z_near - z_far;
float vertical_scale = 1.0f / tanf(vertical_field_of_view_radians / 2.0f);
float horizontal_scale = vertical_scale / aspect;
return Matrix4(Vector4(horizontal_scale, 0.0f, 0.0f, 0.0f),
Vector4(0.0f, vertical_scale, 0.0f, 0.0f),
Vector4(0.0f, 0.0f, z_far / dz, -1.0f),
Vector4(0.0f, 0.0f, z_near * z_far / dz, 0.0f));
}
} // namespace Aos
} // namespace Vectormath
namespace o3d {
namespace command_buffer {
namespace math = Vectormath::Aos;
// Copy a data buffer to args, for IMMEDIATE commands. Returns the number of
// args used.
unsigned int CopyToArgs(CommandBufferEntry *args,
const void *data,
size_t size) {
memcpy(args, data, size);
const unsigned int arg_size = sizeof(args[0]);
return static_cast<unsigned int>((size + arg_size - 1) / arg_size);
}
// Our effect: this computes the reflection color using the iridescence texture,
// and modulates it with the cubemap lookup on the reflected ray, passing the
// transmission factor in the alpha (this should be used with One/SourceAlpha
// blending mode).
// We also attenuate the back face color because the incident light has already
// been through the front face.
// The width is modulated by an exponential factor of the Y component, to
// simulate gravity, and by a noise texture.
const char effect_data[] =
"vs\0" // Vertex program entry point
"ps\0" // Fragment program entry point
"struct a2v {\n"
" float3 position: POSITION;\n" // Object-space position
" float3 normal: NORMAL;\n" // Object-space normal
" float2 uv: TEXCOORD0;\n" // Noise texture UVs
"};\n"
"struct v2f {\n"
" float4 position: POSITION;\n" // Homogeneous clip space position
" float2 uv: TEXCOORD0;\n" // Noise texture UVs
" float2 params: TEXCOORD1;\n" // (cos i, thickness), where i is the
// angle of the incident ray
" float3 reflected: TEXCOORD4;\n" // Reflected ray direction
"};\n"
"\n"
"float4x4 worldViewProj : WorldViewProjection;\n" // MVP matrix
"float4x4 world : World;\n" // Object-to-world matrix
"float4x4 worldIT : WorldInverseTranspose;\n" // Object-to-world matrix
"float3 eye;\n" // World-space eye position
"float4 thickness_params;\n" // Thickness modulation parameters (xyz),
// Back face attenuation (w)
"sampler noise_sampler;\n" // Noise sampler
"sampler iridescence_sampler;\n" // Iridescence sampler
"sampler env_sampler;\n" // Environment map sampler
"\n"
"v2f vs(a2v i) {\n"
" v2f o;\n"
// Object-space position and normal
" float4 object_position =\n"
" float4(i.position.x, i.position.y, i.position.z, 1);\n"
" float4 object_normal = float4(i.normal.x, i.normal.y, i.normal.z, 0);\n"
// World-space position, normal, object center, and eye vector (incident
// ray)
" float3 normal = normalize(mul(object_normal, worldIT).xyz);\n"
" float4 position = mul(object_position, world);\n"
" float4 center = mul(float4(0, 0, 0, 1), world);\n"
" float3 eye_vector = normalize(position.xyz - eye);\n"
// cos i (absolute value for back faces)
" float cos_i = abs(dot(normal, eye_vector));\n"
" float thickness =\n"
" exp(-(position.y-center.y)*thickness_params.x)*thickness_params.y;\n"
// Output parameters
" o.position = mul(object_position, worldViewProj);\n"
" o.params = float2(cos_i, thickness);\n"
" o.reflected = reflect(eye_vector, normal);\n"
" o.uv = i.uv;\n"
" return o;\n"
"}\n"
"float4 ps(v2f i) : COLOR {\n"
// noise: remap [0 .. 1] to [-0.5 .. 0.5]
" float noise = tex2D(noise_sampler, i.uv).x - .5;\n"
" float thickness = i.params.y - noise * thickness_params.z;\n"
" float cos_i = i.params.x;\n"
// Modulate iridescence color by the environment looked up along the
// reflected ray.
" float4 color = tex2D(iridescence_sampler, float2(cos_i, thickness));\n"
" color *= texCUBE(env_sampler, i.reflected);\n"
// Modulate by per-face attenuation
" color.rgb *= thickness_params.w;\n"
" return color;\n"
"};\n"
"\n";
// Custom vertex, with position, normal and UVs.
struct CustomVertex {
float x, y, z;
float nx, ny, nz;
float u, v;
};
// Creates a sphere shape, filling vertices and indices.
// There must be space for (rows+1) * (cols+1) vertices, and 6 * rows * cols
// indices.
void MakeSphere(unsigned int rows,
unsigned int cols,
CustomVertex *vertices,
unsigned int *indices) {
for (unsigned int y = 0; y < rows + 1; ++y) {
float phi = y * kPi / rows;
float y1 = cosf(phi);
float r = sinf(phi);
for (unsigned int x = 0; x < cols + 1; ++x) {
float theta = x * 2.f * kPi / cols;
float x1 = cosf(theta) * r;
float z1 = sinf(theta) * r;
unsigned int index = x + y * (cols + 1);
CustomVertex * vertex = vertices + index;
vertex->x = x1;
vertex->y = y1;
vertex->z = z1;
vertex->nx = x1;
vertex->ny = y1;
vertex->nz = z1;
vertex->u = x * 1.f / cols;
vertex->v = y * 1.f / rows;
if (x != cols && y != rows) {
// For each vertex, we add indices for 2 triangles representing the
// quad using this vertex as the upper left corner:
// [(x, y), (x+1, y), (x+1, y+1)] and
// [(x, y), (x+1, y+1), (x, y+1)].
// Note that we don't create triangles for the last row and the last
// column of vertices.
*indices++ = index;
*indices++ = index + 1;
*indices++ = index + cols + 2;
*indices++ = index;
*indices++ = index + cols + 2;
*indices++ = index + cols + 1;
}
}
}
}
// Makes a BGRA noise texture.
void MakeNoiseTexture(unsigned int width,
unsigned int height,
unsigned int frequency,
unsigned int *seed,
unsigned char *texture) {
PerlinNoise2D perlin(frequency);
perlin.Initialize(seed);
scoped_array<float> values(new float[width * height]);
perlin.Generate(width, height, values.get());
for (unsigned int y = 0; y < height; ++y) {
// Attenuate the noise value with a function that goes to 0 on the poles to
// avoid discontinuities.
// Note: it'd be better to have a 3D noise texture, but they are way
// too expensive.
float attenuation = sinf(y * kPi / height);
for (unsigned int x = 0; x < width; ++x) {
float attenuated_value = values[y * width + x] * attenuation;
// remap [-1..1] to [0..1] and convert to color values.
unsigned char value = ToChar(attenuated_value * .5f + .5f);
*texture++ = value;
*texture++ = value;
*texture++ = value;
*texture++ = value;
}
}
}
class BubbleDemo {
public:
BubbleDemo();
~BubbleDemo() {}
// Creates the socket pair for the connection.
nacl::HtpHandle CreateSockets();
// Sets a handle.
void SetHandle(int index, nacl::HtpHandle handle);
// Initializes the demo once connected.
void Initialize();
// Finalizes the demo.
void Finalize();
// Renders a frame.
void Render();
private:
// A bubble instance.
struct Bubble {
math::Point3 position;
math::Vector3 rotation_speed;
float scale;
float base_thickness;
float thickness_falloff;
float noise_ratio;
};
// Depth sort functor for bubbles.
class BubbleSorter {
public:
explicit BubbleSorter(const math::Matrix4 &view) : view_(view) {}
bool operator()(const Bubble &l, const Bubble &r) {
return (view_ * l.position)[2] < (view_ * r.position)[2];
}
private:
const math::Matrix4 &view_;
};
// Draws one bubble.
void DrawBubble(const math::Matrix4& view,
const math::Matrix4& proj,
const BubbleDemo::Bubble &bubble,
const math::Vector3& rotation);
nacl::HtpHandle handle_pair_[2];
ResourceId vertex_buffer_id_;
ResourceId index_buffer_id_;
ResourceId vertex_struct_id_;
ResourceId effect_id_;
ResourceId noise_texture_id_;
ResourceId iridescence_texture_id_;
ResourceId cubemap_id_;
ResourceId noise_sampler_id_;
ResourceId iridescence_sampler_id_;
ResourceId cubemap_sampler_id_;
ResourceId noise_sampler_param_id_;
ResourceId iridescence_sampler_param_id_;
ResourceId cubemap_sampler_param_id_;
ResourceId mvp_param_id_;
ResourceId world_param_id_;
ResourceId worldIT_param_id_;
ResourceId eye_param_id_;
ResourceId thickness_param_id_;
scoped_ptr<IMCSender> sender_;
scoped_ptr<BufferSyncProxy> proxy_;
scoped_ptr<CommandBufferHelper> helper_;
scoped_ptr<FencedAllocatorWrapper> allocator_;
RPCShmHandle shm_;
unsigned int shm_id_;
void *shm_address_;
CustomVertex *vertices_;
unsigned int *indices_;
unsigned char *noise_texture_;
unsigned char *iridescence_texture_;
unsigned int seed_;
float time_;
std::vector<Bubble> bubbles_;
};
BubbleDemo::BubbleDemo()
: vertex_buffer_id_(1),
index_buffer_id_(1),
vertex_struct_id_(1),
effect_id_(1),
noise_texture_id_(1),
iridescence_texture_id_(2),
cubemap_id_(3),
noise_sampler_id_(1),
iridescence_sampler_id_(2),
cubemap_sampler_id_(3),
noise_sampler_param_id_(1),
iridescence_sampler_param_id_(2),
cubemap_sampler_param_id_(3),
mvp_param_id_(4),
world_param_id_(5),
worldIT_param_id_(6),
eye_param_id_(7),
thickness_param_id_(8),
shm_(kRPCInvalidHandle),
shm_id_(UINT_MAX),
shm_address_(NULL),
vertices_(NULL),
indices_(NULL),
noise_texture_(NULL),
iridescence_texture_(NULL),
seed_(0x12345678u), // pick some non-zero seed.
time_(0.f) {
handle_pair_[0] = nacl::kInvalidHtpHandle;
handle_pair_[1] = nacl::kInvalidHtpHandle;
}
void BubbleDemo::SetHandle(int index, nacl::HtpHandle handle) {
DCHECK_GE(index, 0);
DCHECK_LT(index, arraysize(handle_pair_));
handle_pair_[index] = handle;
}
nacl::HtpHandle BubbleDemo::CreateSockets() {
nacl::Handle socket_pair[2];
if (nacl::SocketPair(socket_pair) < 0) {
return nacl::kInvalidHtpHandle;
}
handle_pair_[0] = nacl::CreateImcDesc(socket_pair[0]);
handle_pair_[1] = nacl::CreateImcDesc(socket_pair[1]);
return handle_pair_[1];
}
const unsigned int kRows = 50;
const unsigned int kCols = 100;
const unsigned int kVertexCount = (kRows + 1) * (kCols + 1);
const unsigned int kIndexCount = 6 * kRows * kCols;
const unsigned int kVertexBufferSize = kVertexCount * sizeof(CustomVertex);
const unsigned int kIndexBufferSize = kIndexCount * sizeof(unsigned int);
const unsigned int kTexWidth = 512;
const unsigned int kTexHeight = 512;
const unsigned int kTexSize = kTexWidth * kTexHeight * 4;
const unsigned int kShmSize = 3 << 20;
const unsigned int kCommandBufferEntries = 1 << 16;
const float kRefractionIndex = 1.33;
const unsigned int kBubbleCount = 10;
void BubbleDemo::Initialize() {
sender_.reset(new IMCSender(handle_pair_[0]));
proxy_.reset(new BufferSyncProxy(sender_.get()));
proxy_->InitConnection();
DCHECK_LE(kVertexBufferSize + kIndexBufferSize + 2 * kTexSize, kShmSize);
shm_ = CreateShm(kShmSize);
shm_address_ = MapShm(shm_, kShmSize);
shm_id_ = proxy_->RegisterSharedMemory(shm_, kShmSize);
helper_.reset(new CommandBufferHelper(proxy_.get()));
helper_->Init(kCommandBufferEntries);
allocator_.reset(new FencedAllocatorWrapper(kShmSize,
helper_.get(),
shm_address_));
vertices_ = allocator_->AllocTyped<CustomVertex>(kVertexCount);
indices_ = allocator_->AllocTyped<unsigned int>(kIndexCount);
MakeSphere(kRows, kCols, vertices_, indices_);
noise_texture_ = allocator_->AllocTyped<unsigned char>(kTexSize);
MakeNoiseTexture(kTexWidth, kTexHeight, 8, &seed_, noise_texture_);
iridescence_texture_ = allocator_->AllocTyped<unsigned char>(kTexSize);
MakeIridescenceTexture(kTexWidth, kTexHeight, kRefractionIndex,
kRedWavelength, iridescence_texture_);
// Clear the buffers.
RGBA color = {0.f, 0.f, 0.f, 1.f};
helper_->Clear(command_buffer::kColor | command_buffer::kDepth,
color.red, color.green, color.blue, color.alpha,
1.f, 0);
// Create geometry arrays and structures
helper_->CreateVertexBuffer(vertex_buffer_id_, kVertexBufferSize,
vertex_buffer::kNone);
CHECK_ERROR(helper_);
helper_->SetVertexBufferData(vertex_buffer_id_, 0, kVertexBufferSize,
shm_id_, allocator_->GetOffset(vertices_));
CHECK_ERROR(helper_);
helper_->CreateIndexBuffer(index_buffer_id_, kIndexBufferSize,
index_buffer::kIndex32Bit);
CHECK_ERROR(helper_);
helper_->SetIndexBufferData(index_buffer_id_, 0, kIndexBufferSize,
shm_id_, allocator_->GetOffset(indices_));
CHECK_ERROR(helper_);
helper_->CreateVertexStruct(vertex_struct_id_, 3);
CHECK_ERROR(helper_);
// Set POSITION input stream
helper_->SetVertexInput(vertex_struct_id_, 0,
vertex_buffer_id_, offsetof(CustomVertex, x),
vertex_struct::kPosition, 0,
vertex_struct::kFloat3, sizeof(CustomVertex));
CHECK_ERROR(helper_);
// Set NORMAL input stream
helper_->SetVertexInput(vertex_struct_id_, 1,
vertex_buffer_id_, offsetof(CustomVertex, nx),
vertex_struct::kNormal, 0,
vertex_struct::kFloat3, sizeof(CustomVertex));
CHECK_ERROR(helper_);
// Set TEXCOORD0 input stream
helper_->SetVertexInput(vertex_struct_id_, 2,
vertex_buffer_id_, offsetof(CustomVertex, u),
vertex_struct::kTexCoord, 0,
vertex_struct::kFloat3, sizeof(CustomVertex));
CHECK_ERROR(helper_);
// Create a 2D texture.
helper_->CreateTexture2d(noise_texture_id_,
kTexWidth, kTexHeight,
1, texture::kARGB8, false);
CHECK_ERROR(helper_);
helper_->SetTextureData(noise_texture_id_,
0, 0, 0,
kTexWidth, kTexHeight, 1,
0, texture::kFaceNone,
kTexWidth * 4, // row_pitch
0, // slice_pitch
kTexSize, // size
shm_id_,
allocator_->GetOffset(noise_texture_));
CHECK_ERROR(helper_);
helper_->CreateSampler(noise_sampler_id_);
CHECK_ERROR(helper_);
helper_->SetSamplerTexture(noise_sampler_id_, noise_texture_id_);
CHECK_ERROR(helper_);
helper_->SetSamplerStates(noise_sampler_id_,
sampler::kWrap,
sampler::kWrap,
sampler::kWrap,
sampler::kLinear,
sampler::kLinear,
sampler::kNone,
1);
CHECK_ERROR(helper_);
// Create a 2D texture.
helper_->CreateTexture2d(iridescence_texture_id_,
kTexWidth, kTexHeight,
1, texture::kARGB8, false);
CHECK_ERROR(helper_);
helper_->SetTextureData(iridescence_texture_id_,
0, 0, 0,
kTexWidth, kTexHeight, 1,
0, texture::kFaceNone,
kTexWidth * 4, // row_pitch
0, // slice_pitch
kTexSize, // size
shm_id_,
allocator_->GetOffset(iridescence_texture_));
CHECK_ERROR(helper_);
helper_->CreateSampler(iridescence_sampler_id_);
CHECK_ERROR(helper_);
helper_->SetSamplerTexture(iridescence_sampler_id_, iridescence_texture_id_);
CHECK_ERROR(helper_);
helper_->SetSamplerStates(iridescence_sampler_id_,
sampler::kClampToEdge,
sampler::kClampToEdge,
sampler::kClampToEdge,
sampler::kLinear,
sampler::kLinear,
sampler::kNone,
1);
CHECK_ERROR(helper_);
// Create a Cubemap texture.
helper_->CreateTextureCube(cubemap_id_,
kCubeMapWidth,
1, texture::kARGB8, false);
CHECK_ERROR(helper_);
for (unsigned int face = 0; face < 6; ++face) {
void *data = allocator_->Alloc(kCubeMapFaceSize);
memcpy(data, g_cubemap_data + face*kCubeMapFaceSize, kCubeMapFaceSize);
helper_->SetTextureData(cubemap_id_,
0, 0, 0,
kCubeMapWidth, kCubeMapHeight, 1,
0, static_cast<texture::Face>(face),
kCubeMapWidth * 4, // row_pitch
0, // slice_pitch
kCubeMapFaceSize, // size
shm_id_,
allocator_->GetOffset(data));
CHECK_ERROR(helper_);
allocator_->FreePendingToken(data, helper_->InsertToken());
}
helper_->CreateSampler(cubemap_sampler_id_);
CHECK_ERROR(helper_);
helper_->SetSamplerTexture(cubemap_sampler_id_, cubemap_id_);
CHECK_ERROR(helper_);
helper_->SetSamplerStates(cubemap_sampler_id_,
sampler::kClampToEdge,
sampler::kClampToEdge,
sampler::kClampToEdge,
sampler::kLinear,
sampler::kLinear,
sampler::kNone,
1);
CHECK_ERROR(helper_);
// Create the effect, and parameters.
// TODO(gman): expand the size param of the command buffer because it would
// be nice if we could just do this
//
// helper_->CreateEffectImmediate(effect_id_,
// sizeof(effect_data), effect_data);
//
// instead of all this alloc, memcpy, free stuff. Currently we can't because a
// command's size is only 8 bits and so the most we can pass in in an
// immediate command is 1024 bytes.
void *data = allocator_->Alloc(sizeof(effect_data));
memcpy(data, effect_data, sizeof(effect_data));
helper_->CreateEffect(effect_id_, sizeof(effect_data),
shm_id_, allocator_->GetOffset(data));
CHECK_ERROR(helper_);
allocator_->FreePendingToken(data, helper_->InsertToken());
{
const char param_name[] = "noise_sampler";
helper_->CreateParamByNameImmediate(noise_sampler_param_id_,
effect_id_,
sizeof(param_name),
param_name);
CHECK_ERROR(helper_);
}
{
const char param_name[] = "iridescence_sampler";
helper_->CreateParamByNameImmediate(iridescence_sampler_param_id_,
effect_id_,
sizeof(param_name),
param_name);
CHECK_ERROR(helper_);
}
{
const char param_name[] = "env_sampler";
helper_->CreateParamByNameImmediate(cubemap_sampler_param_id_,
effect_id_,
sizeof(param_name),
param_name);
CHECK_ERROR(helper_);
}
{
const char param_name[] = "worldViewProj";
helper_->CreateParamByNameImmediate(mvp_param_id_,
effect_id_,
sizeof(param_name),
param_name);
CHECK_ERROR(helper_);
}
{
const char param_name[] = "world";
helper_->CreateParamByNameImmediate(world_param_id_,
effect_id_,
sizeof(param_name),
param_name);
CHECK_ERROR(helper_);
}
{
const char param_name[] = "worldIT";
helper_->CreateParamByNameImmediate(worldIT_param_id_,
effect_id_,
sizeof(param_name),
param_name);
CHECK_ERROR(helper_);
}
{
const char param_name[] = "eye";
helper_->CreateParamByNameImmediate(eye_param_id_,
effect_id_,
sizeof(param_name),
param_name);
CHECK_ERROR(helper_);
}
{
const char param_name[] = "thickness_params";
helper_->CreateParamByNameImmediate(thickness_param_id_,
effect_id_,
sizeof(param_name),
param_name);
CHECK_ERROR(helper_);
}
// Bind textures to the parameters
helper_->SetParamDataImmediate(noise_sampler_param_id_,
sizeof(noise_sampler_id_),
&noise_sampler_id_);
CHECK_ERROR(helper_);
helper_->SetParamDataImmediate(iridescence_sampler_param_id_,
sizeof(iridescence_sampler_id_),
&iridescence_sampler_id_);
CHECK_ERROR(helper_);
helper_->SetParamDataImmediate(cubemap_sampler_param_id_,
sizeof(cubemap_sampler_id_),
&cubemap_sampler_id_);
CHECK_ERROR(helper_);
// Create our random bubbles.
for (unsigned int i = 0; i < kBubbleCount; ++i) {
Bubble bubble;
bubble.position = math::Point3(Randf(-6.f, 6.f, &seed_),
Randf(-6.f, 6.f, &seed_),
Randf(-6.f, 6.f, &seed_));
bubble.rotation_speed = math::Vector3(Randf(-.1f, .1f, &seed_),
Randf(-.1f, .1f, &seed_),
Randf(-.1f, .1f, &seed_));
bubble.scale = Randf(.5, 2.f, &seed_);
float max_thickness = Randf(.3f, .5f, &seed_);
float min_thickness = Randf(.3f, max_thickness, &seed_);
// thickness = base * e^(-y * falloff) for y in [-scale..scale].
bubble.thickness_falloff =
logf(max_thickness / min_thickness) / (2 * bubble.scale);
bubble.base_thickness =
max_thickness * expf(-bubble.scale * bubble.thickness_falloff);
bubble.noise_ratio = Randf(.2f, .5f, &seed_);
bubbles_.push_back(bubble);
}
}
void BubbleDemo::Finalize() {
helper_->Finish();
allocator_->Free(iridescence_texture_);
allocator_->Free(noise_texture_);
allocator_->Free(indices_);
allocator_->Free(vertices_);
allocator_.reset(NULL);
helper_.reset(NULL);
proxy_->CloseConnection();
proxy_->UnregisterSharedMemory(shm_id_);
proxy_.reset(NULL);
DestroyShm(shm_);
sender_->SendCall(POISONED_MESSAGE_ID, NULL, 0, NULL, 0);
sender_.reset(NULL);
nacl::Close(handle_pair_[0]);
handle_pair_[0] = nacl::kInvalidHtpHandle;
nacl::Close(handle_pair_[1]);
handle_pair_[1] = nacl::kInvalidHtpHandle;
}
void BubbleDemo::DrawBubble(const math::Matrix4& view,
const math::Matrix4& proj,
const BubbleDemo::Bubble &bubble,
const math::Vector3& rotation) {
math::Matrix4 view_inv = math::inverse(view);
math::Point3 eye(view_inv.getTranslation());
math::Matrix4 model =
math::Matrix4::translation(math::Vector3(bubble.position)) *
math::Matrix4::scale(math::Vector3(bubble.scale, bubble.scale,
bubble.scale)) *
math::Matrix4::rotationZYX(rotation);
math::Matrix4 modelIT = math::inverse(math::transpose(model));
math::Matrix4 mvp = proj * view * model;
helper_->SetVertexStruct(vertex_struct_id_);
CHECK_ERROR(helper_);
helper_->SetParamDataImmediate(mvp_param_id_, sizeof(mvp), &mvp);
CHECK_ERROR(helper_);
helper_->SetParamDataImmediate(world_param_id_, sizeof(model), &model);
CHECK_ERROR(helper_);
helper_->SetParamDataImmediate(worldIT_param_id_, sizeof(modelIT), &modelIT);
CHECK_ERROR(helper_);
helper_->SetParamDataImmediate(eye_param_id_, sizeof(eye), &eye);
CHECK_ERROR(helper_);
helper_->SetBlending(command_buffer::kBlendFuncOne,
command_buffer::kBlendFuncSrcAlpha,
command_buffer::kBlendEqAdd,
command_buffer::kBlendFuncOne,
command_buffer::kBlendFuncOne,
command_buffer::kBlendEqAdd,
false,
true);
CHECK_ERROR(helper_);
helper_->SetEffect(effect_id_);
CHECK_ERROR(helper_);
// Draw back faces first.
helper_->SetPolygonRaster(command_buffer::kPolygonModeFill,
command_buffer::kCullCCW);
CHECK_ERROR(helper_);
float temp[4] = {
bubble.thickness_falloff,
bubble.base_thickness,
bubble.noise_ratio,
.5f, // back face attenuation
};
helper_->SetParamDataImmediate(thickness_param_id_, sizeof(temp), temp);
CHECK_ERROR(helper_);
helper_->DrawIndexed(command_buffer::kTriangles,
index_buffer_id_,
0, // first
kIndexCount / 3, // primitive count
0, // min index
kVertexCount - 1); // max index
CHECK_ERROR(helper_);
// Then front faces.
helper_->SetPolygonRaster(command_buffer::kPolygonModeFill,
command_buffer::kCullCW);
CHECK_ERROR(helper_);
temp[3] = 1.f; // back face attenuation
helper_->SetParamDataImmediate(thickness_param_id_, sizeof(temp), temp);
CHECK_ERROR(helper_);
helper_->DrawIndexed(command_buffer::kTriangles,
index_buffer_id_,
0, // first
kIndexCount / 3, // primitive count
0, // min index
kVertexCount - 1); // max index
CHECK_ERROR(helper_);
}
void BubbleDemo::Render() {
time_ = time_ + .01f;
// Camera path
float r = 20.f;
float theta = time_ / 4.f;
float phi = 2 * theta;
math::Point3 eye(r * cosf(theta), r / 3.f * sinf(phi), r * sinf(theta));
math::Point3 target(0.f, 0.f, 0.f);
math::Vector3 up(0.f, 1.f, 0.f);
math::Matrix4 proj =
math::CreatePerspectiveMatrix(kPi / 4.f, 1.f, .1f, 10000.f);
math::Matrix4 view = math::Matrix4::lookAt(eye, target, up);
helper_->BeginFrame();
CHECK_ERROR(helper_);
RGBA color = {0.2f, 0.2f, 0.2f, 1.f};
helper_->Clear(command_buffer::kColor | command_buffer::kDepth,
color.red, color.green, color.blue, color.alpha,
1.f, 0);
// Sort bubbles back-to-front.
std::sort(bubbles_.begin(), bubbles_.end(), BubbleSorter(view));
// Then render them all.
for (unsigned int i = 0; i < bubbles_.size(); ++i) {
const Bubble &bubble = bubbles_[i];
DrawBubble(view, proj, bubble, time_ * 2.f * kPi * bubble.rotation_speed);
}
helper_->EndFrame();
CHECK_ERROR(helper_);
helper_->Flush();
helper_->Finish();
}
} // namespace command_buffer
} // namespace o3d
#if 0
// Scriptable object for the plug-in, provides the glue with the browser.
// Creates a BubbleDemo object and delegates calls to it.
class Plugin : public NPObject {
public:
NPError SetWindow(NPWindow *window) { return NPERR_NO_ERROR;}
static NPClass *GetNPClass() {
return &class_;
}
private:
explicit Plugin(NPP npp);
~Plugin();
nacl::HtpHandle Create();
void Initialize();
void Destroy();
void Render();
static NPObject *Allocate(NPP npp, NPClass *npclass);
static void Deallocate(NPObject *object);
static bool HasMethod(NPObject *header, NPIdentifier name);
static bool Invoke(NPObject *header, NPIdentifier name,
const NPVariant *args, uint32_t argCount,
NPVariant *result);
static bool InvokeDefault(NPObject *header, const NPVariant *args,
uint32_t argCount, NPVariant *result);
static bool HasProperty(NPObject *header, NPIdentifier name);
static bool GetProperty(NPObject *header, NPIdentifier name,
NPVariant *variant);
static bool SetProperty(NPObject *header, NPIdentifier name,
const NPVariant *variant);
static bool Enumerate(NPObject *header, NPIdentifier **value,
uint32_t *count);
NPP npp_;
static NPClass class_;
NPIdentifier create_id_;
NPIdentifier initialize_id_;
NPIdentifier destroy_id_;
NPIdentifier render_id_;
scoped_ptr<o3d::command_buffer::BubbleDemo> demo_;
};
Plugin::Plugin(NPP npp)
: npp_(npp) {
const char *names[4] = {"create", "initialize", "destroy", "render"};
NPIdentifier ids[4];
NPN_GetStringIdentifiers(names, 4, ids);
create_id_ = ids[0];
initialize_id_ = ids[1];
destroy_id_ = ids[2];
render_id_ = ids[3];
}
Plugin::~Plugin() {
if (demo_.get()) demo_->Finalize();
}
nacl::HtpHandle Plugin::Create() {
demo_.reset(new o3d::command_buffer::BubbleDemo());
return demo_->CreateSockets();
}
void Plugin::Initialize() {
if (demo_.get()) demo_->Initialize();
}
void Plugin::Destroy() {
if (demo_.get()) {
demo_->Finalize();
demo_.reset(NULL);
}
}
void Plugin::Render() {
if (demo_.get()) demo_->Render();
}
NPClass Plugin::class_ = {
NP_CLASS_STRUCT_VERSION,
Plugin::Allocate,
Plugin::Deallocate,
0,
Plugin::HasMethod,
Plugin::Invoke,
0,
Plugin::HasProperty,
Plugin::GetProperty,
Plugin::SetProperty,
0,
Plugin::Enumerate,
};
NPObject *Plugin::Allocate(NPP npp, NPClass *npclass) {
return new Plugin(npp);
}
void Plugin::Deallocate(NPObject *object) {
delete static_cast<Plugin *>(object);
}
bool Plugin::HasMethod(NPObject *header, NPIdentifier name) {
Plugin *plugin = static_cast<Plugin *>(header);
return (name == plugin->create_id_ ||
name == plugin->initialize_id_ ||
name == plugin->destroy_id_ ||
name == plugin->render_id_);
}
bool Plugin::Invoke(NPObject *header, NPIdentifier name,
const NPVariant *args, uint32_t argCount,
NPVariant *result) {
Plugin *plugin = static_cast<Plugin *>(header);
VOID_TO_NPVARIANT(*result);
if (name == plugin->create_id_ && argCount == 0) {
nacl::HtpHandle handle = plugin->Create();
if (handle == nacl::kInvalidHtpHandle) {
return false;
}
HANDLE_TO_NPVARIANT(handle, *result);
return true;
} else if (name == plugin->initialize_id_ && argCount == 0) {
plugin->Initialize();
return true;
} else if (name == plugin->destroy_id_ && argCount == 0) {
plugin->Destroy();
return true;
} else if (name == plugin->render_id_ && argCount == 0) {
plugin->Render();
return true;
} else {
return false;
}
}
bool Plugin::InvokeDefault(NPObject *header, const NPVariant *args,
uint32_t argCount, NPVariant *result) {
return false;
}
bool Plugin::HasProperty(NPObject *header, NPIdentifier name) {
return false;
}
bool Plugin::GetProperty(NPObject *header, NPIdentifier name,
NPVariant *variant) {
return false;
}
bool Plugin::SetProperty(NPObject *header, NPIdentifier name,
const NPVariant *variant) {
return false;
}
bool Plugin::Enumerate(NPObject *header, NPIdentifier **value,
uint32_t *count) {
Plugin *plugin = static_cast<Plugin *>(header);
*count = 4;
NPIdentifier *ids = static_cast<NPIdentifier *>(
NPN_MemAlloc(*count * sizeof(NPIdentifier)));
ids[0] = plugin->create_id_;
ids[1] = plugin->initialize_id_;
ids[2] = plugin->destroy_id_;
ids[3] = plugin->render_id_;
*value = ids;
return true;
}
NPError NPP_New(NPMIMEType mime_type, NPP instance, uint16_t mode,
int16_t argc, char* argn[], char* argv[],
NPSavedData* saved) {
if (instance == NULL) {
return NPERR_INVALID_INSTANCE_ERROR;
}
NPObject *object = NPN_CreateObject(instance, Plugin::GetNPClass());
if (object == NULL) {
return NPERR_OUT_OF_MEMORY_ERROR;
}
instance->pdata = object;
return NPERR_NO_ERROR;
}
NPError NPP_Destroy(NPP instance, NPSavedData** save) {
if (instance == NULL) {
return NPERR_INVALID_INSTANCE_ERROR;
}
Plugin* plugin = static_cast<Plugin*>(instance->pdata);
if (plugin != NULL) {
NPN_ReleaseObject(plugin);
}
return NPERR_NO_ERROR;
}
NPObject* NPP_GetScriptableInstance(NPP instance) {
if (instance == NULL) {
return NULL;
}
NPObject* object = static_cast<NPObject*>(instance->pdata);
if (object) {
NPN_RetainObject(object);
}
return object;
}
NPError NPP_SetWindow(NPP instance, NPWindow* window) {
if (instance == NULL) {
return NPERR_INVALID_INSTANCE_ERROR;
}
if (window == NULL) {
return NPERR_GENERIC_ERROR;
}
Plugin* plugin = static_cast<Plugin*>(instance->pdata);
if (plugin != NULL) {
return plugin->SetWindow(window);
}
return NPERR_GENERIC_ERROR;
}
int main(int argc, char **argv) {
printf("Bubble demo\n");
NaClNP_Init(&argc, argv);
NaClNP_MainLoop(0);
return 0;
}
#endif
nacl::HtpHandle InitConnection(int argc, char **argv) {
nacl::Handle handle = nacl::kInvalidHandle;
#ifndef __native_client__
NaClNrdAllModulesInit();
static nacl::SocketAddress g_address = { "command-buffer" };
static nacl::SocketAddress g_local_address = { "cb-client" };
nacl::Handle sockets[2];
nacl::SocketPair(sockets);
nacl::MessageHeader msg;
msg.iov = NULL;
msg.iov_length = 0;
msg.handles = &sockets[1];
msg.handle_count = 1;
nacl::Handle local_socket = nacl::BoundSocket(&g_local_address);
nacl::SendDatagramTo(local_socket, &msg, 0, &g_address);
nacl::Close(local_socket);
nacl::Close(sockets[1]);
handle = sockets[0];
#else
if (argc < 3 || strcmp(argv[1], "-fd") != 0) {
fprintf(stderr, "Usage: %s -fd file_descriptor\n", argv[0]);
return nacl::kInvalidHtpHandle;
}
int fd = atoi(argv[2]);
handle = imc_connect(fd);
if (handle < 0) {
fprintf(stderr, "Could not connect to file descriptor %d.\n"
"Did you use the -a and -X options to sel_ldr ?\n", fd);
return nacl::kInvalidHtpHandle;
}
#endif
return nacl::CreateImcDesc(handle);
}
void CloseConnection(nacl::HtpHandle handle) {
nacl::Close(handle);
#ifndef __native_client__
NaClNrdAllModulesFini();
#endif
}
int main(int argc, char **argv) {
nacl::HtpHandle htp_handle = InitConnection(argc, argv);
if (htp_handle == nacl::kInvalidHtpHandle) {
return 1;
}
o3d::command_buffer::BubbleDemo demo;
demo.SetHandle(0, htp_handle);
demo.Initialize();
for (;;) {
// TODO(gman): Add a way out of this loop.
demo.Render();
}
demo.Finalize();
CloseConnection(htp_handle);
return 0;
}
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