bool initBuffer()
{
// Generate a buffer object
glGenBuffers(buffer::MAX, &BufferName[0]);
// Allocate and copy buffers memory
std::vector<glm::byte> Data(PositionSizeF32 + PositionSizeI8 + PositionSizeI32 + PositionSizeRGB10A2 + PositionSizeF16 + PositionSizeRG11FB10F);
std::size_t CurrentOffset = 0;
memcpy(&Data[0] + CurrentOffset, PositionDataF32, PositionSizeF32);
CurrentOffset += PositionSizeF32;
memcpy(&Data[0] + CurrentOffset, PositionDataI8, PositionSizeI8);
CurrentOffset += PositionSizeI8;
memcpy(&Data[0] + CurrentOffset, PositionDataI32, PositionSizeI32);
CurrentOffset += PositionSizeI32;
memcpy(&Data[0] + CurrentOffset, PositionDataRGB10A2, PositionSizeRGB10A2);
CurrentOffset += PositionSizeRGB10A2;
memcpy(&Data[0] + CurrentOffset, PositionDataF16, PositionSizeF16);
CurrentOffset += PositionSizeF16;
memcpy(&Data[0] + CurrentOffset, PositionDataRG11FB10F, PositionSizeRG11FB10F);
glBindBuffer(GL_ARRAY_BUFFER, BufferName[buffer::VERTEX]);
glBufferStorage(GL_ARRAY_BUFFER, GLsizeiptr(Data.size()), &Data[0], 0);
GLint UniformBufferOffset(0);
glGetIntegerv(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, &UniformBufferOffset);
GLint UniformBlockSize = glm::max(GLint(sizeof(glm::mat4)), UniformBufferOffset);
glBindBuffer(GL_UNIFORM_BUFFER, BufferName[buffer::TRANSFORM]);
glBufferStorage(GL_UNIFORM_BUFFER, UniformBlockSize, nullptr, GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT | GL_MAP_COHERENT_BIT);
glBindBuffer(GL_UNIFORM_BUFFER, 0);
return this->checkError("initBuffer");
}
bool initBuffer()
{
bool Validated(true);
glGenBuffers(buffer::MAX, BufferName);
glObjectLabel(GL_BUFFER, BufferName[buffer::ELEMENT], -1, "Element Array Buffer object");
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, BufferName[buffer::ELEMENT]);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, ElementSize, ElementData, GL_STATIC_DRAW);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
glObjectLabel(GL_BUFFER, BufferName[buffer::VERTEX], -1, "Array Buffer object");
glBindBuffer(GL_ARRAY_BUFFER, BufferName[buffer::VERTEX]);
glBufferData(GL_ARRAY_BUFFER, VertexSize, VertexData, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
GLint UniformBufferOffset(0);
glGetIntegerv(
GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT,
&UniformBufferOffset);
GLint UniformBlockSize = glm::max(GLint(sizeof(glm::mat4)), UniformBufferOffset);
glObjectLabel(GL_BUFFER, BufferName[buffer::TRANSFORM], -1, "Uniform Buffer object");
glBindBuffer(GL_UNIFORM_BUFFER, BufferName[buffer::TRANSFORM]);
glBufferData(GL_UNIFORM_BUFFER, UniformBlockSize, NULL, GL_DYNAMIC_DRAW);
glBindBuffer(GL_UNIFORM_BUFFER, 0);
return Validated;
}
bool initBuffer()
{
glGenBuffers(buffer::MAX, &BufferName[0]);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, BufferName[buffer::ELEMENT]);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, ElementSize, ElementData, GL_STATIC_DRAW);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
glBindBuffer(GL_ARRAY_BUFFER, BufferName[buffer::VERTEX]);
glBufferData(GL_ARRAY_BUFFER, VertexSize, VertexData, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
GLint UniformBufferOffset(0);
glGetIntegerv(
GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT,
&UniformBufferOffset);
GLint UniformBlockSize = glm::max(GLint(sizeof(glm::mat4)), UniformBufferOffset);
glBindBuffer(GL_UNIFORM_BUFFER, BufferName[buffer::TRANSFORM]);
glBufferData(GL_UNIFORM_BUFFER, UniformBlockSize, NULL, GL_DYNAMIC_COPY);
glBindBuffer(GL_UNIFORM_BUFFER, 0);
return true;
}
bool initBuffer()
{
GLint UniformBufferOffset(0);
glGetIntegerv(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, &UniformBufferOffset);
glGenBuffers(buffer::MAX, &BufferName[0]);
glBindBuffer(GL_ARRAY_BUFFER, BufferName[buffer::VERTEX]);
glBufferData(GL_ARRAY_BUFFER, PositionSize, &PositionData[0][0], GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
GLint UniformTransformBlockSize = glm::max(GLint(sizeof(glm::mat4)), UniformBufferOffset);
glBindBuffer(GL_UNIFORM_BUFFER, BufferName[buffer::TRANSFORM]);
glBufferData(GL_UNIFORM_BUFFER, UniformTransformBlockSize, nullptr, GL_DYNAMIC_DRAW);
glBindBuffer(GL_UNIFORM_BUFFER, 0);
this->UniformMaterialOffset = glm::max(GLint(sizeof(glm::vec4)), UniformBufferOffset);
glBindBuffer(GL_UNIFORM_BUFFER, BufferName[buffer::MATERIAL]);
glBufferData(GL_UNIFORM_BUFFER, this->UniformMaterialOffset * 2, nullptr, GL_STATIC_DRAW);
glm::byte* Pointer = reinterpret_cast<glm::byte*>(
glMapBufferRange(GL_UNIFORM_BUFFER, 0, this->UniformMaterialOffset * 2, GL_MAP_WRITE_BIT | GL_MAP_INVALIDATE_BUFFER_BIT));
*reinterpret_cast<glm::vec4*>(Pointer + 0) = glm::vec4(0.0f, 0.5f, 1.0f, 1.0f);
*reinterpret_cast<glm::vec4*>(Pointer + this->UniformMaterialOffset) = glm::vec4(1.0f, 0.5f, 0.0f, 1.0f);
glUnmapBuffer(GL_UNIFORM_BUFFER);
glBindBuffer(GL_UNIFORM_BUFFER, 0);
return this->checkError("initBuffer");
}
bool initBuffer()
{
std::size_t const Count(360);
float const Step(360.f / float(Count));
VertexData.resize(Count);
for(std::size_t i = 0; i < Count; ++i)
VertexData[i] = glm::vec2(glm::sin(glm::radians(Step * float(i))), glm::cos(glm::radians(Step * float(i))));
glGenBuffers(buffer::MAX, &BufferName[0]);
glBindBuffer(GL_ARRAY_BUFFER, BufferName[buffer::VERTEX]);
glBufferData(GL_ARRAY_BUFFER, VertexData.size() * sizeof(glm::vec2), &VertexData[0], GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
GLint UniformBufferOffset(0);
glGetIntegerv(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, &UniformBufferOffset);
GLint UniformBlockSize = glm::max(GLint(sizeof(glm::mat4)), UniformBufferOffset);
glBindBuffer(GL_UNIFORM_BUFFER, BufferName[buffer::TRANSFORM]);
glBufferData(GL_UNIFORM_BUFFER, UniformBlockSize, NULL, GL_DYNAMIC_DRAW);
glBindBuffer(GL_UNIFORM_BUFFER, 0);
return true;
}
bool initUniformBuffer()
{
bool Validated(true);
GLint UniformBufferOffset(0);
glGetIntegerv(
GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT,
&UniformBufferOffset);
{
GLint UniformBlockSize = glm::max(GLint(sizeof(glm::mat4)), UniformBufferOffset);
glBindBuffer(GL_UNIFORM_BUFFER, BufferName[buffer::TRANSFORM]);
glBufferData(GL_UNIFORM_BUFFER, UniformBlockSize, NULL, GL_DYNAMIC_DRAW);
glBindBuffer(GL_UNIFORM_BUFFER, 0);
}
{
GLint UniformBlockSize = glm::max(GLint(sizeof(glm::uvec2)), UniformBufferOffset);
glBindBuffer(GL_UNIFORM_BUFFER, BufferName[buffer::MATERIAL]);
glBufferData(GL_UNIFORM_BUFFER, UniformBlockSize, NULL, GL_DYNAMIC_DRAW);
glBindBuffer(GL_UNIFORM_BUFFER, 0);
}
return Validated;
}
bool initBuffer()
{
glGenBuffers(buffer::MAX, &BufferName[0]);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, BufferName[buffer::ELEMENT]);
glBufferStorage(GL_ELEMENT_ARRAY_BUFFER, ElementSize, ElementData, 0);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
glBindBuffer(GL_ARRAY_BUFFER, BufferName[buffer::VERTEX]);
glBufferStorage(GL_ARRAY_BUFFER, VertexSize, VertexData, 0);
glBindBuffer(GL_ARRAY_BUFFER, 0);
GLint UniformBufferOffset(0);
glGetIntegerv(
GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT,
&UniformBufferOffset);
GLint UniformBlockSize = glm::max(GLint(sizeof(glm::mat4)), UniformBufferOffset);
glBindBuffer(GL_UNIFORM_BUFFER, BufferName[buffer::TRANSFORM]);
glBufferStorage(GL_UNIFORM_BUFFER, UniformBlockSize, NULL, GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT);
glBindBuffer(GL_UNIFORM_BUFFER, 0);
return true;
}
bool initBuffer()
{
bool Validated(true);
glGenBuffers(buffer::MAX, &BufferName[0]);
GLint UniformBufferOffset(0);
glGetIntegerv(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, &UniformBufferOffset);
GLint UniformBlockSize = glm::max(GLint(sizeof(glm::mat4)), UniformBufferOffset);
glBindBuffer(GL_UNIFORM_BUFFER, BufferName[buffer::TRANSFORM]);
glBufferData(GL_UNIFORM_BUFFER, UniformBlockSize, nullptr, GL_DYNAMIC_DRAW);
glBindBuffer(GL_UNIFORM_BUFFER, 0);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, BufferName[buffer::ELEMENT]);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, ElementSize, ElementData, GL_STATIC_DRAW);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
void* Pointer = initMemoryBuffer();
glBindBuffer(GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD, BufferName[buffer::VERTEX]);
glBufferData(GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD, VertexSize, Pointer, GL_STREAM_COPY);
glBindBuffer(GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD, 0);
glBindBuffer(GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD, 0);
return Validated;
}
bool initBuffer()
{
GLint UniformBufferOffset(0);
glGetIntegerv(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, &UniformBufferOffset);
GLint UniformBlockSize = glm::max(GLint(sizeof(glm::mat4)), UniformBufferOffset);
glCreateBuffers(buffer::MAX, &BufferName[0]);
glNamedBufferStorage(BufferName[buffer::ELEMENT], ElementSize, ElementData, 0);
glNamedBufferStorage(BufferName[buffer::VERTEX], VertexSize, VertexData, 0);
glNamedBufferStorage(BufferName[buffer::TRANSFORM], UniformBlockSize, nullptr, GL_MAP_WRITE_BIT);
return true;
}
bool initBuffer()
{
GLint UniformBufferOffset(0);
glGetIntegerv(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, &UniformBufferOffset);
UniformBlockSize = glm::max(GLint(sizeof(glm::mat4)), UniformBufferOffset);
glGenBuffers(buffer::MAX, &BufferName[0]);
glNamedBufferDataEXT(BufferName[buffer::ELEMENT], ElementSize, ElementData, GL_STATIC_DRAW);
glNamedBufferDataEXT(BufferName[buffer::VERTEX], VertexSize, VertexData, GL_STATIC_DRAW);
glNamedBufferDataEXT(BufferName[buffer::TRANSFORM], UniformBlockSize, nullptr, GL_DYNAMIC_DRAW);
return true;
}
bool initBuffer()
{
GLint UniformBufferOffset(0);
glGetIntegerv(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, &UniformBufferOffset);
this->UniformBlockSize = glm::max(GLint(sizeof(glm::mat4)), UniformBufferOffset);
glCreateBuffers(buffer::MAX, &BufferName[0]);
glNamedBufferStorage(BufferName[buffer::ELEMENT], ElementSize, ElementData, 0);
glNamedBufferStorage(BufferName[buffer::VERTEX], VertexSize, VertexData, 0);
glNamedBufferStorage(BufferName[buffer::TRANSFORM], this->UniformBlockSize * 2, nullptr, GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT | GL_MAP_COHERENT_BIT);
this->UniformPointer = static_cast<glm::uint8*>(glMapNamedBufferRange(
BufferName[buffer::TRANSFORM], 0, this->UniformBlockSize * 2, GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT | GL_MAP_COHERENT_BIT | GL_MAP_INVALIDATE_BUFFER_BIT));
return true;
}
bool initBuffer()
{
glGenBuffers(buffer::MAX, BufferName);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, BufferName[buffer::ELEMENT]);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, ElementSize, ElementData, GL_STATIC_DRAW);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
glBindBuffer(GL_ARRAY_BUFFER, BufferName[buffer::POSITION_INPUT]);
glBufferData(GL_ARRAY_BUFFER, PositionSize * 2, NULL, GL_STATIC_DRAW);
glBufferSubData(GL_ARRAY_BUFFER, 0, PositionSize, PositionData);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ARRAY_BUFFER, BufferName[buffer::TEXCOORD_INPUT]);
glBufferData(GL_ARRAY_BUFFER, TexcoordSize * 2, TexcoordData, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ARRAY_BUFFER, BufferName[buffer::COLOR_INPUT]);
glBufferData(GL_ARRAY_BUFFER, ColorSize * 2, ColorData, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ARRAY_BUFFER, BufferName[buffer::POSITION_OUTPUT]);
glBufferData(GL_ARRAY_BUFFER, PositionSize * 2, NULL, GL_STATIC_COPY);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ARRAY_BUFFER, BufferName[buffer::TEXCOORD_OUTPUT]);
glBufferData(GL_ARRAY_BUFFER, TexcoordSize * 2, NULL, GL_STATIC_COPY);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ARRAY_BUFFER, BufferName[buffer::COLOR_OUTPUT]);
glBufferData(GL_ARRAY_BUFFER, ColorSize * 2, NULL, GL_STATIC_COPY);
glBindBuffer(GL_ARRAY_BUFFER, 0);
GLint UniformBufferOffset(0);
glGetIntegerv(
GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT,
&UniformBufferOffset);
GLint UniformBlockSize = glm::max(GLint(sizeof(glm::mat4)), UniformBufferOffset);
glBindBuffer(GL_UNIFORM_BUFFER, BufferName[buffer::TRANSFORM]);
glBufferData(GL_UNIFORM_BUFFER, UniformBlockSize, NULL, GL_DYNAMIC_DRAW);
glBindBuffer(GL_UNIFORM_BUFFER, 0);
return true;
}
bool initBuffer()
{
glGenBuffers(buffer::MAX, &BufferName[0]);
glBindBuffer(GL_ARRAY_BUFFER, BufferName[buffer::VERTEX]);
glBufferData(GL_ARRAY_BUFFER, PositionSize, &PositionData[0][0], GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
GLint UniformBufferOffset(0);
glGetIntegerv(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, &UniformBufferOffset);
GLint UniformBlockSize = glm::max(GLint(sizeof(glm::mat4)), UniformBufferOffset);
glBindBuffer(GL_UNIFORM_BUFFER, BufferName[buffer::TRANSFORM]);
glBufferData(GL_UNIFORM_BUFFER, UniformBlockSize, nullptr, GL_DYNAMIC_DRAW);
glBindBuffer(GL_UNIFORM_BUFFER, 0);
return true;
}
bool initBuffer()
{
glGenBuffers(buffer::MAX, &BufferName[0]);
glBindBuffer(GL_SHADER_STORAGE_BUFFER, BufferName[buffer::VERTEX]);
glBufferStorage(GL_SHADER_STORAGE_BUFFER, VertexSize, VertexData, 0);
glBindBuffer(GL_SHADER_STORAGE_BUFFER, 0);
GLint UniformBufferOffset(0);
glGetIntegerv(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, &UniformBufferOffset);
GLint UniformBlockSize = glm::max(GLint(sizeof(transform)), UniformBufferOffset);
glBindBuffer(GL_UNIFORM_BUFFER, BufferName[buffer::TRANSFORM]);
glBufferStorage(GL_UNIFORM_BUFFER, UniformBlockSize, nullptr, GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT | GL_MAP_COHERENT_BIT);
glBindBuffer(GL_UNIFORM_BUFFER, 0);
return true;
}
bool initBuffer()
{
// Generate a buffer object
glGenBuffers(buffer::MAX, &BufferName[0]);
glBindBuffer(GL_ARRAY_BUFFER, BufferName[buffer::VERTEX]);
glBufferStorage(GL_ARRAY_BUFFER, VertexSize, VertexData, 0);
glBindBuffer(GL_ARRAY_BUFFER, 0);
GLint UniformBufferOffset(0);
glGetIntegerv(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, &UniformBufferOffset);
GLint UniformBlockSize = glm::max(GLint(sizeof(glm::mat4)), UniformBufferOffset);
glBindBuffer(GL_UNIFORM_BUFFER, BufferName[buffer::TRANSFORM]);
glBufferStorage(GL_UNIFORM_BUFFER, UniformBlockSize, NULL, GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT | GL_MAP_COHERENT_BIT);
glBindBuffer(GL_UNIFORM_BUFFER, 0);
return this->checkError("initBuffer");;
}
bool initBuffer()
{
glGenBuffers(buffer::MAX, &BufferName[0]);
glBindBuffer(GL_ARRAY_BUFFER, BufferName[buffer::VERTEX]);
glBufferData(GL_ARRAY_BUFFER, VertexSize, VertexData, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
GLint UniformBufferOffset(0);
glGetIntegerv(
GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT,
&UniformBufferOffset);
GLint UniformBlockSize = glm::max(GLint(sizeof(glm::mat4)), UniformBufferOffset);
glBindBuffer(GL_UNIFORM_BUFFER, BufferName[buffer::TRANSFORM]);
glBufferData(GL_UNIFORM_BUFFER, UniformBlockSize, NULL, GL_DYNAMIC_DRAW);
glBindBuffer(GL_UNIFORM_BUFFER, 0);
return this->checkError("initArrayBuffer");;
}
bool initBuffer()
{
std::vector<glm::vec3> VertexData;
glf::generate_icosahedron(VertexData, 4);
this->VertexCount = static_cast<GLuint>(VertexData.size());
glGenBuffers(buffer::MAX, &BufferName[0]);
glBindBuffer(GL_ARRAY_BUFFER, BufferName[buffer::VERTEX]);
glBufferData(GL_ARRAY_BUFFER, VertexData.size() * sizeof(glm::vec3), &VertexData[0], GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
GLint UniformBufferOffset(0);
glGetIntegerv(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, &UniformBufferOffset);
GLint UniformBlockSize = glm::max(GLint(sizeof(glm::mat4)), UniformBufferOffset);
glBindBuffer(GL_UNIFORM_BUFFER, BufferName[buffer::TRANSFORM]);
glBufferData(GL_UNIFORM_BUFFER, UniformBlockSize, nullptr, GL_DYNAMIC_DRAW);
glBindBuffer(GL_UNIFORM_BUFFER, 0);
return true;
}
bool initBuffer()
{
GLint const Alignement = 256;
GLint BufferPageSize = 0;
glGetIntegerv(GL_SPARSE_BUFFER_PAGE_SIZE_ARB, &BufferPageSize);
bool Validated(true);
GLintptr CopyBufferSize = glm::ceilMultiple<GLint>(VertexSize, Alignement) + glm::ceilMultiple<GLint>(ElementSize, Alignement);
glCreateBuffers(buffer::MAX, &BufferName[0]);
glNamedBufferStorage(BufferName[buffer::COPY], CopyBufferSize, nullptr, GL_MAP_WRITE_BIT);
glm::byte* CopyBufferPointer = reinterpret_cast<glm::byte*>(glMapNamedBufferRange(BufferName[buffer::COPY], 0, CopyBufferSize, GL_MAP_WRITE_BIT | GL_MAP_INVALIDATE_BUFFER_BIT));
memcpy(CopyBufferPointer + 0, VertexData, VertexSize);
memcpy(CopyBufferPointer + glm::ceilMultiple<GLint>(VertexSize, Alignement), ElementData, ElementSize);
glUnmapNamedBuffer(BufferName[buffer::COPY]);
glBindBuffer(GL_COPY_READ_BUFFER, BufferName[buffer::COPY]);
glBindBuffer(GL_COPY_WRITE_BUFFER, BufferName[buffer::ELEMENT]);
glBufferStorage(GL_COPY_WRITE_BUFFER, glm::ceilMultiple<GLint>(ElementSize, BufferPageSize), nullptr, GL_SPARSE_STORAGE_BIT_ARB);
glBufferPageCommitmentARB(GL_COPY_WRITE_BUFFER, 0, BufferPageSize, GL_TRUE);
glCopyBufferSubData(GL_COPY_READ_BUFFER, GL_COPY_WRITE_BUFFER, glm::ceilMultiple<GLint>(VertexSize, Alignement), 0, glm::ceilMultiple<GLint>(ElementSize, Alignement));
glBindBuffer(GL_COPY_WRITE_BUFFER, BufferName[buffer::VERTEX]);
glBufferStorage(GL_COPY_WRITE_BUFFER, glm::ceilMultiple<GLint>(VertexSize, BufferPageSize), nullptr, GL_SPARSE_STORAGE_BIT_ARB);
glBufferPageCommitmentARB(GL_COPY_WRITE_BUFFER, 0, BufferPageSize, GL_TRUE);
glCopyBufferSubData(GL_COPY_READ_BUFFER, GL_COPY_WRITE_BUFFER, 0, 0, glm::ceilMultiple<GLint>(VertexSize, Alignement));
GLint UniformBufferOffset(0);
glGetIntegerv(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, &UniformBufferOffset);
GLint UniformBlockSize = glm::max(GLint(sizeof(glm::mat4)), UniformBufferOffset);
glNamedBufferStorage(BufferName[buffer::TRANSFORM], UniformBlockSize, nullptr, GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT | GL_MAP_COHERENT_BIT);
return Validated;
}
bool initBuffer()
{
glGenBuffers(buffer::MAX, &BufferName[0]);
glBindBuffer(GL_ARRAY_BUFFER, BufferName[buffer::VERTEX]);
glBufferStorage(GL_ARRAY_BUFFER, PositionSize, PositionData, 0);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ARRAY_BUFFER, BufferName[buffer::FEEDBACK]);
glBufferStorage(GL_ARRAY_BUFFER, sizeof(glf::vertex_v4fc4f) * VertexCount, NULL, 0);
glBindBuffer(GL_ARRAY_BUFFER, 0);
GLint UniformBufferOffset(0);
glGetIntegerv(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, &UniformBufferOffset);
GLint UniformBlockSize = glm::max(GLint(sizeof(glm::mat4)), UniformBufferOffset);
glBindBuffer(GL_UNIFORM_BUFFER, BufferName[buffer::TRANSFORM]);
glBufferStorage(GL_UNIFORM_BUFFER, UniformBlockSize, NULL, GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT | GL_MAP_COHERENT_BIT);
glBindBuffer(GL_UNIFORM_BUFFER, 0);
return this->checkError("initBuffer");
}
bool initBuffer()
{
glGenBuffers(buffer::MAX, &BufferName[0]);
GLint UniformBufferOffset(0);
glGetIntegerv(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, &UniformBufferOffset);
GLint UniformBlockSize = glm::max(GLint(sizeof(glm::mat4)), UniformBufferOffset);
glBindBuffer(GL_UNIFORM_BUFFER, BufferName[buffer::TRANSFORM]);
glBufferData(GL_UNIFORM_BUFFER, UniformBlockSize, nullptr, GL_DYNAMIC_DRAW);
glBindBuffer(GL_UNIFORM_BUFFER, 0);
glGenBuffers(1, &TransformArrayBufferName);
glBindBuffer(GL_ARRAY_BUFFER, TransformArrayBufferName);
glBufferData(GL_ARRAY_BUFFER, PositionSize, PositionData, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glGenBuffers(1, &FeedbackArrayBufferName);
glBindBuffer(GL_ARRAY_BUFFER, FeedbackArrayBufferName);
glBufferData(GL_ARRAY_BUFFER, sizeof(glf::vertex_v4fc4f) * VertexCount, NULL, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
return this->checkError("initArrayBuffer");
}
bool initBuffer()
{
glm::vec3 Displacement[5] =
{
glm::vec3( 0.1f, 0.3f,-1.0f),
glm::vec3(-0.5f, 0.0f,-0.5f),
glm::vec3(-0.2f,-0.2f, 0.0f),
glm::vec3( 0.3f, 0.2f, 0.5f),
glm::vec3( 0.1f,-0.3f, 1.0f)
};
glm::vec3 Diffuse[5] =
{
glm::vec3(1.0f, 0.0f, 0.0f),
glm::vec3(1.0f, 0.5f, 0.0f),
glm::vec3(1.0f, 1.0f, 0.0f),
glm::vec3(0.0f, 1.0f, 0.0f),
glm::vec3(0.0f, 0.0f, 1.0f)
};
GLint TextureBufferOffsetAlignment(0);
glGetIntegerv(GL_TEXTURE_BUFFER_OFFSET_ALIGNMENT, &TextureBufferOffsetAlignment);
int DisplacementSize = sizeof(Displacement);
int DiffuseSize = sizeof(Diffuse);
int DisplacementMultiple = glm::ceilMultiple(int(sizeof(Displacement)), int(TextureBufferOffsetAlignment));
int DiffuseMultiple = glm::ceilMultiple(int(sizeof(Diffuse)), int(TextureBufferOffsetAlignment));
glGenBuffers(BUFFER_MAX, &BufferName[0]);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, BufferName[BUFFER_ELEMENT]);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, ElementSize, ElementData, GL_STATIC_DRAW);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
glBindBuffer(GL_ARRAY_BUFFER, BufferName[BUFFER_VERTEX]);
glBufferData(GL_ARRAY_BUFFER, VertexSize, VertexData, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_TEXTURE_BUFFER, BufferName[BUFFER_DISPLACEMENT]);
glBufferData(GL_TEXTURE_BUFFER, TextureBufferOffsetAlignment + DisplacementMultiple, 0, GL_STATIC_DRAW);
glBufferSubData(GL_TEXTURE_BUFFER, TextureBufferOffsetAlignment, sizeof(Displacement), Displacement);
/*
void * PointerDisplacement = glMapBufferRange(GL_TEXTURE_BUFFER,
0, sizeof(Displacement), GL_MAP_WRITE_BIT );
memcpy(PointerDisplacement, &Displacement[0], sizeof(Displacement));
glUnmapBuffer(GL_TEXTURE_BUFFER);
*/
glBindBuffer(GL_TEXTURE_BUFFER, 0);
glBindBuffer(GL_TEXTURE_BUFFER, BufferName[BUFFER_DIFFUSE]);
glBufferData(GL_TEXTURE_BUFFER, TextureBufferOffsetAlignment + DiffuseMultiple, 0, GL_STATIC_DRAW);
glBufferSubData(GL_TEXTURE_BUFFER, TextureBufferOffsetAlignment, sizeof(Diffuse), Diffuse);
glBindBuffer(GL_TEXTURE_BUFFER, 0);
GLint UniformBufferOffset(0);
glGetIntegerv(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, &UniformBufferOffset);
GLint UniformBlockSize = glm::max(GLint(sizeof(glm::mat4)), UniformBufferOffset);
glBindBuffer(GL_UNIFORM_BUFFER, BufferName[BUFFER_TRANSFORM]);
glBufferData(GL_UNIFORM_BUFFER, UniformBlockSize, NULL, GL_DYNAMIC_DRAW);
glBindBuffer(GL_UNIFORM_BUFFER, 0);
return true;
}
