Added vertex pack/unpack support.
This commit is contained in:
parent
d4cd0ea4fa
commit
446686b48f
@ -42,21 +42,6 @@ uint32_t packUint32(uint8_t _x, uint8_t _y, uint8_t _z, uint8_t _w)
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return un.ui32;
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}
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void unpackUint32(uint8_t _result[4], uint32_t _packed)
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{
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union
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{
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uint32_t ui32;
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uint8_t arr[4];
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} un;
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un.ui32 = _packed;
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_result[0] = un.arr[0];
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_result[1] = un.arr[1];
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_result[2] = un.arr[2];
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_result[3] = un.arr[3];
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}
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uint32_t packF4u(float _x, float _y = 0.0f, float _z = 0.0f, float _w = 0.0f)
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{
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const uint8_t xx = uint8_t(_x*127.0f + 128.0f);
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@ -66,16 +51,6 @@ uint32_t packF4u(float _x, float _y = 0.0f, float _z = 0.0f, float _w = 0.0f)
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return packUint32(xx, yy, zz, ww);
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}
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void unpackF4u(float _result[4], uint32_t _packed)
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{
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uint8_t unpacked[4];
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unpackUint32(unpacked, _packed);
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_result[0] = (float(unpacked[0]) - 128.0f)/127.0f;
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_result[1] = (float(unpacked[1]) - 128.0f)/127.0f;
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_result[2] = (float(unpacked[2]) - 128.0f)/127.0f;
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_result[3] = (float(unpacked[3]) - 128.0f)/127.0f;
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}
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static PosNormalTangentTexcoordVertex s_cubeVertices[24] =
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{
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{-1.0f, 1.0f, 1.0f, packF4u( 0.0f, 0.0f, 1.0f), 0, 0.0f, 0.0f },
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@ -172,18 +147,42 @@ static const bgfx::Memory* loadTexture(const char* _name)
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return load(filePath);
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}
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template<typename Ty>
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void calcTangents(const uint16_t* _indices, uint32_t _numIndices, Ty* _vertices, uint16_t _numVertices)
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void calcTangents(void* _vertices, uint16_t _numVertices, bgfx::VertexDecl _decl, const uint16_t* _indices, uint32_t _numIndices)
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{
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struct PosTexcoord
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{
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float m_x;
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float m_y;
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float m_z;
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float m_pad0;
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float m_u;
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float m_v;
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float m_pad1;
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float m_pad2;
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};
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float* tangents = new float[6*_numVertices];
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memset(tangents, 0, 6*_numVertices*sizeof(float) );
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PosTexcoord v0;
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PosTexcoord v1;
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PosTexcoord v2;
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for (uint32_t ii = 0, num = _numIndices/3; ii < num; ++ii)
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{
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const uint16_t* indices = &_indices[ii*3];
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const Ty& v0 = _vertices[indices[0] ];
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const Ty& v1 = _vertices[indices[1] ];
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const Ty& v2 = _vertices[indices[2] ];
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uint32_t i0 = indices[0];
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uint32_t i1 = indices[1];
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uint32_t i2 = indices[2];
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bgfx::vertexUnpack(&v0.m_x, bgfx::Attrib::Position, _decl, _vertices, i0);
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bgfx::vertexUnpack(&v0.m_u, bgfx::Attrib::TexCoord0, _decl, _vertices, i0);
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bgfx::vertexUnpack(&v1.m_x, bgfx::Attrib::Position, _decl, _vertices, i1);
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bgfx::vertexUnpack(&v1.m_u, bgfx::Attrib::TexCoord0, _decl, _vertices, i1);
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bgfx::vertexUnpack(&v2.m_x, bgfx::Attrib::Position, _decl, _vertices, i2);
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bgfx::vertexUnpack(&v2.m_u, bgfx::Attrib::TexCoord0, _decl, _vertices, i2);
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const float bax = v1.m_x - v0.m_x;
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const float bay = v1.m_y - v0.m_y;
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@ -224,12 +223,11 @@ void calcTangents(const uint16_t* _indices, uint32_t _numIndices, Ty* _vertices,
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for (uint32_t ii = 0; ii < _numVertices; ++ii)
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{
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Ty& v0 = _vertices[ii];
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const float* tanu = &tangents[ii*6];
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const float* tanv = &tangents[ii*6 + 3];
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float normal[4];
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unpackF4u(normal, v0.m_normal);
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bgfx::vertexUnpack(normal, bgfx::Attrib::Normal, _decl, _vertices, ii);
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float ndt = vec3Dot(normal, tanu);
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float nxt[3];
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@ -240,13 +238,13 @@ void calcTangents(const uint16_t* _indices, uint32_t _numIndices, Ty* _vertices,
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tmp[1] = tanu[1] - normal[1] * ndt;
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tmp[2] = tanu[2] - normal[2] * ndt;
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float tangent[3];
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float tangent[4];
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vec3Norm(tangent, tmp);
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float tw = vec3Dot(nxt, tanv) < 0.0f ? -1.0f : 1.0f;
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v0.m_tangent = packF4u(tangent[0], tangent[1], tangent[2], tw);
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tangent[3] = vec3Dot(nxt, tanv) < 0.0f ? -1.0f : 1.0f;
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bgfx::vertexPack(tangent, true, bgfx::Attrib::Tangent, _decl, _vertices, ii);
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}
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}
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}
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int _main_(int _argc, char** _argv)
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{
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@ -293,14 +291,14 @@ int _main_(int _argc, char** _argv)
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// Create vertex stream declaration.
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s_PosNormalTangentTexcoordDecl.begin();
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s_PosNormalTangentTexcoordDecl.add(bgfx::Attrib::Position, 3, bgfx::AttribType::Float);
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s_PosNormalTangentTexcoordDecl.add(bgfx::Attrib::Normal, 4, bgfx::AttribType::Uint8, true);
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s_PosNormalTangentTexcoordDecl.add(bgfx::Attrib::Tangent, 4, bgfx::AttribType::Uint8, true);
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s_PosNormalTangentTexcoordDecl.add(bgfx::Attrib::Normal, 4, bgfx::AttribType::Uint8, true, true);
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s_PosNormalTangentTexcoordDecl.add(bgfx::Attrib::Tangent, 4, bgfx::AttribType::Uint8, true, true);
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s_PosNormalTangentTexcoordDecl.add(bgfx::Attrib::TexCoord0, 2, bgfx::AttribType::Float);
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s_PosNormalTangentTexcoordDecl.end();
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const bgfx::Memory* mem;
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calcTangents(s_cubeIndices, countof(s_cubeIndices), s_cubeVertices, countof(s_cubeVertices) );
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calcTangents(s_cubeVertices, countof(s_cubeVertices), s_PosNormalTangentTexcoordDecl, s_cubeIndices, countof(s_cubeIndices) );
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// Create static vertex buffer.
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mem = bgfx::makeRef(s_cubeVertices, sizeof(s_cubeVertices) );
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@ -329,7 +329,10 @@ struct BgfxCallback : public bgfx::CallbackI
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virtual void fatal(bgfx::Fatal::Enum _code, const char* _str) BX_OVERRIDE
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{
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// Something unexpected happened, inform user and bail out.
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dbgPrintf("Fatal error: 0x%08x: %s", _code, _str);
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// Must terminate, continuing will cause crash anyway.
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abort();
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}
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@ -337,14 +340,18 @@ struct BgfxCallback : public bgfx::CallbackI
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{
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char filePath[256];
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bx::snprintf(filePath, sizeof(filePath), "%016" PRIx64, _id);
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// Use cache id as filename.
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FILE* file = fopen(filePath, "rb");
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if (NULL != file)
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{
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uint32_t size = fsize(file);
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fclose(file);
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// Return size of shader file.
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return size;
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}
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// Return 0 if shader is not found.
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return 0;
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}
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@ -352,14 +359,20 @@ struct BgfxCallback : public bgfx::CallbackI
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{
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char filePath[256];
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bx::snprintf(filePath, sizeof(filePath), "%016" PRIx64, _id);
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// Use cache id as filename.
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FILE* file = fopen(filePath, "rb");
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if (NULL != file)
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{
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// Read shader.
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size_t result = fread(_data, 1, _size, file);
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fclose(file);
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// Make sure that read size matches requested size.
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return result == _size;
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}
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// Shader is not found in cache, needs to be rebuilt.
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return false;
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}
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@ -368,9 +381,11 @@ struct BgfxCallback : public bgfx::CallbackI
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char filePath[256];
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bx::snprintf(filePath, sizeof(filePath), "%016" PRIx64, _id);
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// Use cache id as filename.
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FILE* file = fopen(filePath, "wb");
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if (NULL != file)
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{
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// Write shader to cache location.
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fwrite(_data, 1, _size, file);
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fclose(file);
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}
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@ -378,6 +393,7 @@ struct BgfxCallback : public bgfx::CallbackI
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virtual void screenShot(const char* _filePath, uint32_t _width, uint32_t _height, uint32_t _pitch, const void* _data, uint32_t /*_size*/, bool _yflip) BX_OVERRIDE
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{
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// Save screen shot as TGA.
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saveTga(_filePath, _width, _height, _pitch, _data, false, _yflip);
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}
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@ -556,7 +572,7 @@ int _main_(int _argc, char** _argv)
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}
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}
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// Take screenshot at frame 150.
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// Take screen shot at frame 150.
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if (150 == frame)
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{
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bgfx::saveScreenShot("frame150.tga");
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Binary file not shown.
Binary file not shown.
@ -386,8 +386,8 @@ namespace bgfx
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virtual void captureFrame(const void* _data, uint32_t _size) = 0;
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};
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inline CallbackI::~CallbackI()
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{
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inline CallbackI::~CallbackI()
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{
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}
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struct Memory
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@ -442,10 +442,10 @@ namespace bgfx
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void end();
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/// Add attribute to VertexDecl. Note: Must be called between begin/end.
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void add(Attrib::Enum _attrib, uint8_t _num, AttribType::Enum _type, bool _normalized = false);
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void add(Attrib::Enum _attrib, uint8_t _num, AttribType::Enum _type, bool _normalized = false, bool _asInt = false);
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/// Decode attribute.
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void decode(Attrib::Enum _attrib, uint8_t& _num, AttribType::Enum& _type, bool& _normalized) const;
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void decode(Attrib::Enum _attrib, uint8_t& _num, AttribType::Enum& _type, bool& _normalized, bool& _asInt) const;
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/// Returns true if VertexDecl contains attribute.
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bool has(Attrib::Enum _attrib) const { return 0xff != m_attributes[_attrib]; }
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@ -465,6 +465,12 @@ namespace bgfx
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uint8_t m_attributes[Attrib::Count];
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};
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/// Pack vec4 into vertex stream format.
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void vertexPack(const float _input[4], bool _inputNormalized, Attrib::Enum _attr, const VertexDecl& _decl, void* _data, uint32_t _index = 0);
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/// Unpack vec4 from vertex stream format.
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void vertexUnpack(float _output[4], Attrib::Enum _attr, const VertexDecl& _decl, const void* _data, uint32_t _index = 0);
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/// Returns renderer backend API type.
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RendererType::Enum getRendererType();
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@ -229,7 +229,8 @@ namespace bgfx
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uint8_t num;
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AttribType::Enum type;
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bool normalized;
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_decl.decode(Attrib::Enum(attr), num, type, normalized);
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bool asInt;
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_decl.decode(Attrib::Enum(attr), num, type, normalized, asInt);
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elem->Format = s_attribType[type][num-1][normalized];
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elem->AlignedByteOffset = _decl.m_offset[attr];
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}
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@ -1045,7 +1045,8 @@ namespace bgfx
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uint8_t num;
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AttribType::Enum type;
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bool normalized;
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_decl.decode(Attrib::Enum(attr), num, type, normalized);
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bool asInt;
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_decl.decode(Attrib::Enum(attr), num, type, normalized, asInt);
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memcpy(elem, &s_attrib[attr], sizeof(D3DVERTEXELEMENT9) );
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@ -1269,7 +1269,8 @@ namespace bgfx
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uint8_t num;
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AttribType::Enum type;
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bool normalized;
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_vertexDecl.decode(attr, num, type, normalized);
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bool asInt;
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_vertexDecl.decode(attr, num, type, normalized, asInt);
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if (-1 != loc
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&& 0xff != _vertexDecl.m_attributes[attr])
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@ -5,6 +5,7 @@
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#include <string.h>
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#include <bx/hash.h>
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#include <bx/uint32_t.h>
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#include "vertexdecl.h"
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@ -65,23 +66,25 @@ namespace bgfx
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m_hash = bx::hashMurmur2A(m_attributes, sizeof(m_attributes) );
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}
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void VertexDecl::add(Attrib::Enum _attrib, uint8_t _num, AttribType::Enum _type, bool _normalized)
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void VertexDecl::add(Attrib::Enum _attrib, uint8_t _num, AttribType::Enum _type, bool _normalized, bool _asInt)
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{
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const uint8_t encoded_norm = (_normalized&1)<<6;
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const uint8_t encoded_type = (_type&3)<<3;
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const uint8_t encoded_num = (_num-1)&3;
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const uint8_t encodedNorm = (_normalized&1)<<6;
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const uint8_t encodedType = (_type&3)<<3;
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const uint8_t encodedNum = (_num-1)&3;
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const uint8_t encodeAsInt = (_asInt&(!!"\x1\x1\x0\x0"[_type]) )<<7;
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m_attributes[_attrib] = encoded_norm|encoded_type|encoded_num;
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m_attributes[_attrib] = encodedNorm|encodedType|encodedNum|encodeAsInt;
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m_offset[_attrib] = m_stride;
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m_stride += (*s_attribTypeSize[m_hash])[_type][_num-1];
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}
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void VertexDecl::decode(Attrib::Enum _attrib, uint8_t& _num, AttribType::Enum& _type, bool& _normalized) const
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void VertexDecl::decode(Attrib::Enum _attrib, uint8_t& _num, AttribType::Enum& _type, bool& _normalized, bool& _asInt) const
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{
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uint8_t val = m_attributes[_attrib];
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_num = (val&3)+1;
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_type = AttribType::Enum((val>>3)&3);
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_normalized = !!(val&(1<<6) );
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_asInt = !!(val&(1<<7) );
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}
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const char* getAttribName(Attrib::Enum _attr)
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@ -123,14 +126,16 @@ namespace bgfx
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uint8_t num;
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AttribType::Enum type;
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bool normalized;
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_decl.decode(Attrib::Enum(attr), num, type, normalized);
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bool asInt;
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_decl.decode(Attrib::Enum(attr), num, type, normalized, asInt);
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BX_TRACE("\tattr %d - %s, num %d, type %d, norm %d, offset %d"
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BX_TRACE("\tattr %d - %s, num %d, type %d, norm %d, asint %d, offset %d"
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, attr
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, getAttribName(Attrib::Enum(attr) )
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, num
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, type
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, normalized
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, asInt
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, _decl.m_offset[attr]
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);
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}
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@ -140,4 +145,218 @@ namespace bgfx
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#endif // BGFX_CONFIG_DEBUG
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}
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void vertexPack(const float _input[4], bool _inputNormalized, Attrib::Enum _attr, const VertexDecl& _decl, void* _data, uint32_t _index)
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{
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if (!_decl.has(_attr) )
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{
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return;
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}
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uint32_t stride = _decl.getStride();
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uint8_t* data = (uint8_t*)_data + _index*stride + _decl.getOffset(_attr);
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uint8_t num;
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AttribType::Enum type;
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bool normalized;
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bool asInt;
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_decl.decode(_attr, num, type, normalized, asInt);
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switch (type)
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{
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case AttribType::Uint8:
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{
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uint8_t* packed = (uint8_t*)data;
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if (_inputNormalized)
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{
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if (asInt)
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{
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switch (num)
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{
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default: *packed++ = uint8_t(*_input++ * 127.0f + 128.0f);
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case 3: *packed++ = uint8_t(*_input++ * 127.0f + 128.0f);
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case 2: *packed++ = uint8_t(*_input++ * 127.0f + 128.0f);
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case 1: *packed++ = uint8_t(*_input++ * 127.0f + 128.0f);
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}
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}
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else
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{
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switch (num)
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{
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default: *packed++ = uint8_t(*_input++ * 255.0f);
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case 3: *packed++ = uint8_t(*_input++ * 255.0f);
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case 2: *packed++ = uint8_t(*_input++ * 255.0f);
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case 1: *packed++ = uint8_t(*_input++ * 255.0f);
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}
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}
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}
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else
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{
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switch (num)
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{
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default: *packed++ = uint8_t(*_input++);
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case 3: *packed++ = uint8_t(*_input++);
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case 2: *packed++ = uint8_t(*_input++);
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case 1: *packed++ = uint8_t(*_input++);
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}
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}
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}
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break;
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case AttribType::Uint16:
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{
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uint16_t* packed = (uint16_t*)data;
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if (_inputNormalized)
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{
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if (asInt)
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{
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switch (num)
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{
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default: *packed++ = uint16_t(*_input++ * 32767.0f + 32768.0f);
|
||||
case 3: *packed++ = uint16_t(*_input++ * 32767.0f + 32768.0f);
|
||||
case 2: *packed++ = uint16_t(*_input++ * 32767.0f + 32768.0f);
|
||||
case 1: *packed++ = uint16_t(*_input++ * 32767.0f + 32768.0f);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
switch (num)
|
||||
{
|
||||
default: *packed++ = uint16_t(*_input++ * 65535.0f);
|
||||
case 3: *packed++ = uint16_t(*_input++ * 65535.0f);
|
||||
case 2: *packed++ = uint16_t(*_input++ * 65535.0f);
|
||||
case 1: *packed++ = uint16_t(*_input++ * 65535.0f);
|
||||
}
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
switch (num)
|
||||
{
|
||||
default: *packed++ = uint16_t(*_input++);
|
||||
case 3: *packed++ = uint16_t(*_input++);
|
||||
case 2: *packed++ = uint16_t(*_input++);
|
||||
case 1: *packed++ = uint16_t(*_input++);
|
||||
}
|
||||
}
|
||||
}
|
||||
break;
|
||||
|
||||
case AttribType::Half:
|
||||
{
|
||||
uint16_t* packed = (uint16_t*)data;
|
||||
switch (num)
|
||||
{
|
||||
default: *packed++ = bx::halfFromFloat(*_input++);
|
||||
case 3: *packed++ = bx::halfFromFloat(*_input++);
|
||||
case 2: *packed++ = bx::halfFromFloat(*_input++);
|
||||
case 1: *packed++ = bx::halfFromFloat(*_input++);
|
||||
}
|
||||
}
|
||||
break;
|
||||
|
||||
case AttribType::Float:
|
||||
memcpy(data, _input, num*sizeof(float) );
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
void vertexUnpack(float _output[4], Attrib::Enum _attr, const VertexDecl& _decl, const void* _data, uint32_t _index)
|
||||
{
|
||||
if (!_decl.has(_attr) )
|
||||
{
|
||||
memset(_output, 0, 4*sizeof(float) );
|
||||
return;
|
||||
}
|
||||
|
||||
uint32_t stride = _decl.getStride();
|
||||
uint8_t* data = (uint8_t*)_data + _index*stride + _decl.getOffset(_attr);
|
||||
|
||||
uint8_t num;
|
||||
AttribType::Enum type;
|
||||
bool normalized;
|
||||
bool asInt;
|
||||
_decl.decode(_attr, num, type, normalized, asInt);
|
||||
|
||||
switch (type)
|
||||
{
|
||||
case AttribType::Uint8:
|
||||
{
|
||||
uint8_t* packed = (uint8_t*)data;
|
||||
if (asInt)
|
||||
{
|
||||
switch (num)
|
||||
{
|
||||
default: *_output++ = (float(*packed++) - 128.0f)*1.0f/127.0f;
|
||||
case 3: *_output++ = (float(*packed++) - 128.0f)*1.0f/127.0f;
|
||||
case 2: *_output++ = (float(*packed++) - 128.0f)*1.0f/127.0f;
|
||||
case 1: *_output++ = (float(*packed++) - 128.0f)*1.0f/127.0f;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
switch (num)
|
||||
{
|
||||
default: *_output++ = float(*packed++)*1.0f/255.0f;
|
||||
case 3: *_output++ = float(*packed++)*1.0f/255.0f;
|
||||
case 2: *_output++ = float(*packed++)*1.0f/255.0f;
|
||||
case 1: *_output++ = float(*packed++)*1.0f/255.0f;
|
||||
}
|
||||
}
|
||||
}
|
||||
break;
|
||||
|
||||
case AttribType::Uint16:
|
||||
{
|
||||
uint16_t* packed = (uint16_t*)data;
|
||||
if (asInt)
|
||||
{
|
||||
switch (num)
|
||||
{
|
||||
default: *_output++ = (float(*packed++) - 32768.0f)*1.0f/32767.0f;
|
||||
case 3: *_output++ = (float(*packed++) - 32768.0f)*1.0f/32767.0f;
|
||||
case 2: *_output++ = (float(*packed++) - 32768.0f)*1.0f/32767.0f;
|
||||
case 1: *_output++ = (float(*packed++) - 32768.0f)*1.0f/32767.0f;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
switch (num)
|
||||
{
|
||||
default: *_output++ = float(*packed++)*1.0f/65535.0f;
|
||||
case 3: *_output++ = float(*packed++)*1.0f/65535.0f;
|
||||
case 2: *_output++ = float(*packed++)*1.0f/65535.0f;
|
||||
case 1: *_output++ = float(*packed++)*1.0f/65535.0f;
|
||||
}
|
||||
}
|
||||
}
|
||||
break;
|
||||
|
||||
case AttribType::Half:
|
||||
{
|
||||
uint16_t* packed = (uint16_t*)data;
|
||||
switch (num)
|
||||
{
|
||||
default: *_output++ = bx::halfToFloat(*packed++);
|
||||
case 3: *_output++ = bx::halfToFloat(*packed++);
|
||||
case 2: *_output++ = bx::halfToFloat(*packed++);
|
||||
case 1: *_output++ = bx::halfToFloat(*packed++);
|
||||
}
|
||||
}
|
||||
break;
|
||||
|
||||
case AttribType::Float:
|
||||
memcpy(_output, data, num*sizeof(float) );
|
||||
_output += num;
|
||||
break;
|
||||
}
|
||||
|
||||
switch (num)
|
||||
{
|
||||
case 1: *_output++ = 0.0f;
|
||||
case 2: *_output++ = 0.0f;
|
||||
case 3: *_output++ = 0.0f;
|
||||
default: break;
|
||||
}
|
||||
}
|
||||
|
||||
} // namespace bgfx
|
||||
|
@ -7,7 +7,10 @@
|
||||
|
||||
namespace bgfx
|
||||
{
|
||||
/// Returns attribute name.
|
||||
const char* getAttribName(Attrib::Enum _attr);
|
||||
|
||||
/// Dump vertex declaration into debug output.
|
||||
void dump(const VertexDecl& _decl);
|
||||
|
||||
} // namespace bgfx
|
||||
|
@ -133,95 +133,42 @@ void triangleReorder(uint16_t* _indices, uint32_t _numIndices, uint32_t _numVert
|
||||
delete [] newIndexList;
|
||||
}
|
||||
|
||||
uint32_t packUint32(uint8_t _x, uint8_t _y, uint8_t _z, uint8_t _w)
|
||||
{
|
||||
union
|
||||
{
|
||||
uint32_t ui32;
|
||||
uint8_t arr[4];
|
||||
} un;
|
||||
|
||||
un.arr[0] = _x;
|
||||
un.arr[1] = _y;
|
||||
un.arr[2] = _z;
|
||||
un.arr[3] = _w;
|
||||
|
||||
return un.ui32;
|
||||
}
|
||||
|
||||
void unpackUint32(uint8_t _result[4], uint32_t _packed)
|
||||
{
|
||||
union
|
||||
{
|
||||
uint32_t ui32;
|
||||
uint8_t arr[4];
|
||||
} un;
|
||||
|
||||
un.ui32 = _packed;
|
||||
_result[0] = un.arr[0];
|
||||
_result[1] = un.arr[1];
|
||||
_result[2] = un.arr[2];
|
||||
_result[3] = un.arr[3];
|
||||
}
|
||||
|
||||
uint32_t packF4u(float _x, float _y = 0.0f, float _z = 0.0f, float _w = 0.0f)
|
||||
{
|
||||
const uint8_t xx = uint8_t(_x*127.0f + 128.0f);
|
||||
const uint8_t yy = uint8_t(_y*127.0f + 128.0f);
|
||||
const uint8_t zz = uint8_t(_z*127.0f + 128.0f);
|
||||
const uint8_t ww = uint8_t(_w*127.0f + 128.0f);
|
||||
return packUint32(xx, yy, zz, ww);
|
||||
}
|
||||
|
||||
void unpackF4u(float _result[4], uint32_t _packed)
|
||||
{
|
||||
uint8_t unpacked[4];
|
||||
unpackUint32(unpacked, _packed);
|
||||
_result[0] = (float(unpacked[0]) - 128.0f)/127.0f;
|
||||
_result[1] = (float(unpacked[1]) - 128.0f)/127.0f;
|
||||
_result[2] = (float(unpacked[2]) - 128.0f)/127.0f;
|
||||
_result[3] = (float(unpacked[3]) - 128.0f)/127.0f;
|
||||
}
|
||||
|
||||
uint32_t packF2h(float _x, float _y)
|
||||
{
|
||||
union
|
||||
{
|
||||
uint32_t ui32;
|
||||
uint16_t arr[2];
|
||||
} un;
|
||||
|
||||
un.arr[0] = bx::halfFromFloat(_x);
|
||||
un.arr[1] = bx::halfFromFloat(_y);
|
||||
|
||||
return un.ui32;
|
||||
}
|
||||
|
||||
void unpackF2h(float _result[2], uint32_t _packed)
|
||||
{
|
||||
union
|
||||
{
|
||||
uint32_t ui32;
|
||||
uint16_t arr[2];
|
||||
} un;
|
||||
|
||||
un.ui32 = _packed;
|
||||
_result[0] = bx::halfToFloat(un.arr[0]);
|
||||
_result[1] = bx::halfToFloat(un.arr[1]);
|
||||
}
|
||||
|
||||
template<typename Ty>
|
||||
void calcTangents(const uint16_t* _indices, uint32_t _numIndices, Ty* _vertices, uint16_t _numVertices)
|
||||
void calcTangents(void* _vertices, uint16_t _numVertices, bgfx::VertexDecl _decl, const uint16_t* _indices, uint32_t _numIndices)
|
||||
{
|
||||
struct PosTexcoord
|
||||
{
|
||||
float m_x;
|
||||
float m_y;
|
||||
float m_z;
|
||||
float m_pad0;
|
||||
float m_u;
|
||||
float m_v;
|
||||
float m_pad1;
|
||||
float m_pad2;
|
||||
};
|
||||
|
||||
float* tangents = new float[6*_numVertices];
|
||||
memset(tangents, 0, 6*_numVertices*sizeof(float) );
|
||||
|
||||
PosTexcoord v0;
|
||||
PosTexcoord v1;
|
||||
PosTexcoord v2;
|
||||
|
||||
for (uint32_t ii = 0, num = _numIndices/3; ii < num; ++ii)
|
||||
{
|
||||
const uint16_t* indices = &_indices[ii*3];
|
||||
const Ty& v0 = _vertices[indices[0] ];
|
||||
const Ty& v1 = _vertices[indices[1] ];
|
||||
const Ty& v2 = _vertices[indices[2] ];
|
||||
uint32_t i0 = indices[0];
|
||||
uint32_t i1 = indices[1];
|
||||
uint32_t i2 = indices[2];
|
||||
|
||||
bgfx::vertexUnpack(&v0.m_x, bgfx::Attrib::Position, _decl, _vertices, i0);
|
||||
bgfx::vertexUnpack(&v0.m_u, bgfx::Attrib::TexCoord0, _decl, _vertices, i0);
|
||||
|
||||
bgfx::vertexUnpack(&v1.m_x, bgfx::Attrib::Position, _decl, _vertices, i1);
|
||||
bgfx::vertexUnpack(&v1.m_u, bgfx::Attrib::TexCoord0, _decl, _vertices, i1);
|
||||
|
||||
bgfx::vertexUnpack(&v2.m_x, bgfx::Attrib::Position, _decl, _vertices, i2);
|
||||
bgfx::vertexUnpack(&v2.m_u, bgfx::Attrib::TexCoord0, _decl, _vertices, i2);
|
||||
|
||||
const float bax = v1.m_x - v0.m_x;
|
||||
const float bay = v1.m_y - v0.m_y;
|
||||
@ -262,12 +209,11 @@ void calcTangents(const uint16_t* _indices, uint32_t _numIndices, Ty* _vertices,
|
||||
|
||||
for (uint32_t ii = 0; ii < _numVertices; ++ii)
|
||||
{
|
||||
Ty& v0 = _vertices[ii];
|
||||
const float* tanu = &tangents[ii*6];
|
||||
const float* tanv = &tangents[ii*6 + 3];
|
||||
|
||||
float normal[4];
|
||||
unpackF4u(normal, v0.m_normal);
|
||||
bgfx::vertexUnpack(normal, bgfx::Attrib::Normal, _decl, _vertices, ii);
|
||||
float ndt = vec3Dot(normal, tanu);
|
||||
|
||||
float nxt[3];
|
||||
@ -278,11 +224,11 @@ void calcTangents(const uint16_t* _indices, uint32_t _numIndices, Ty* _vertices,
|
||||
tmp[1] = tanu[1] - normal[1] * ndt;
|
||||
tmp[2] = tanu[2] - normal[2] * ndt;
|
||||
|
||||
float tangent[3];
|
||||
float tangent[4];
|
||||
vec3Norm(tangent, tmp);
|
||||
|
||||
float tw = vec3Dot(nxt, tanv) < 0.0f ? -1.0f : 1.0f;
|
||||
v0.m_tangent = packF4u(tangent[0], tangent[1], tangent[2], tw);
|
||||
tangent[3] = vec3Dot(nxt, tanv) < 0.0f ? -1.0f : 1.0f;
|
||||
bgfx::vertexPack(tangent, true, bgfx::Attrib::Tangent, _decl, _vertices, ii);
|
||||
}
|
||||
}
|
||||
|
||||
@ -752,6 +698,8 @@ int main(int _argc, const char* _argv[])
|
||||
|
||||
if (hasNormal)
|
||||
{
|
||||
hasTangent &= hasTexcoord;
|
||||
|
||||
switch (packNormal)
|
||||
{
|
||||
default:
|
||||
@ -764,10 +712,10 @@ int main(int _argc, const char* _argv[])
|
||||
break;
|
||||
|
||||
case 1:
|
||||
decl.add(bgfx::Attrib::Normal, 4, bgfx::AttribType::Uint8, true);
|
||||
decl.add(bgfx::Attrib::Normal, 4, bgfx::AttribType::Uint8, true, true);
|
||||
if (hasTangent)
|
||||
{
|
||||
decl.add(bgfx::Attrib::Tangent, 4, bgfx::AttribType::Uint8, true);
|
||||
decl.add(bgfx::Attrib::Tangent, 4, bgfx::AttribType::Uint8, true, true);
|
||||
}
|
||||
break;
|
||||
}
|
||||
@ -828,6 +776,11 @@ int main(int _argc, const char* _argv[])
|
||||
}
|
||||
triReorderElapsed += bx::getHPCounter();
|
||||
|
||||
if (hasTangent)
|
||||
{
|
||||
calcTangents(vertexData, numVertices, decl, indexData, numIndices);
|
||||
}
|
||||
|
||||
write(&writer, vertexData, numVertices, decl, indexData, numIndices, material, primitives);
|
||||
primitives.clear();
|
||||
|
||||
@ -875,58 +828,14 @@ int main(int _argc, const char* _argv[])
|
||||
uv[1] = -uv[1];
|
||||
}
|
||||
|
||||
switch (packUv)
|
||||
{
|
||||
default:
|
||||
case 0:
|
||||
{
|
||||
float* texcoord0 = (float*)(vertices + texcoord0Offset);
|
||||
memcpy(texcoord0, uv, 2*sizeof(float) );
|
||||
}
|
||||
break;
|
||||
|
||||
case 1:
|
||||
{
|
||||
uint32_t* texcoord0 = (uint32_t*)(vertices + texcoord0Offset);
|
||||
*texcoord0 = packF2h(uv[0], uv[1]);
|
||||
}
|
||||
break;
|
||||
}
|
||||
bgfx::vertexPack(uv, true, bgfx::Attrib::TexCoord0, decl, vertices);
|
||||
}
|
||||
|
||||
if (hasNormal)
|
||||
{
|
||||
switch (packNormal)
|
||||
{
|
||||
default:
|
||||
case 0:
|
||||
{
|
||||
float* normal = (float*)(vertices + normalOffset);
|
||||
vec3Norm(normal, (float*)&normals[index.m_normal]);
|
||||
|
||||
if (hasTangent)
|
||||
{
|
||||
float* tangent = (float*)(vertices + tangentOffset);
|
||||
memset(tangent, 0, 3*sizeof(float) );
|
||||
}
|
||||
}
|
||||
break;
|
||||
|
||||
case 1:
|
||||
{
|
||||
float normal[3];
|
||||
vec3Norm(normal, (float*)&normals[index.m_normal]);
|
||||
uint32_t* nxyz0 = (uint32_t*)(vertices + normalOffset);
|
||||
*nxyz0 = packF4u(normal[0], normal[1], normal[2]);
|
||||
|
||||
if (hasTangent)
|
||||
{
|
||||
uint32_t* txyz0 = (uint32_t*)(vertices + tangentOffset);
|
||||
*txyz0 = packF4u(0.0f);
|
||||
}
|
||||
}
|
||||
break;
|
||||
}
|
||||
float normal[4];
|
||||
vec3Norm(normal, (float*)&normals[index.m_normal]);
|
||||
bgfx::vertexPack(normal, true, bgfx::Attrib::Normal, decl, vertices);
|
||||
}
|
||||
|
||||
vertices += stride;
|
||||
@ -965,6 +874,11 @@ int main(int _argc, const char* _argv[])
|
||||
}
|
||||
triReorderElapsed += bx::getHPCounter();
|
||||
|
||||
if (hasTangent)
|
||||
{
|
||||
calcTangents(vertexData, numVertices, decl, indexData, numIndices);
|
||||
}
|
||||
|
||||
write(&writer, vertexData, numVertices, decl, indexData, numIndices, material, primitives);
|
||||
}
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user