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498 lines
16 KiB
498 lines
16 KiB
/* |
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This file is part of Magnum. |
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Copyright © 2010, 2011, 2012, 2013, 2014 |
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Vladimír Vondruš <mosra@centrum.cz> |
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Permission is hereby granted, free of charge, to any person obtaining a |
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copy of this software and associated documentation files (the "Software"), |
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to deal in the Software without restriction, including without limitation |
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the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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and/or sell copies of the Software, and to permit persons to whom the |
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Software is furnished to do so, subject to the following conditions: |
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The above copyright notice and this permission notice shall be included |
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in all copies or substantial portions of the Software. |
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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DEALINGS IN THE SOFTWARE. |
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*/ |
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#include "Mesh.h" |
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#include <Corrade/Utility/Debug.h> |
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#include "Magnum/Buffer.h" |
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#include "Magnum/Context.h" |
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#include "Magnum/Extensions.h" |
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#include "Implementation/DebugState.h" |
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#include "Implementation/BufferState.h" |
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#include "Implementation/MeshState.h" |
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#include "Implementation/State.h" |
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namespace Magnum { |
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Int Mesh::maxVertexAttributes() { return AbstractShaderProgram::maxVertexAttributes(); } |
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#ifndef MAGNUM_TARGET_GLES2 |
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Int Mesh::maxElementsIndices() { |
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GLint& value = Context::current()->state().mesh->maxElementsIndices; |
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/* Get the value, if not already cached */ |
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if(value == 0) |
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glGetIntegerv(GL_MAX_ELEMENTS_INDICES, &value); |
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return value; |
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} |
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Int Mesh::maxElementsVertices() { |
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GLint& value = Context::current()->state().mesh->maxElementsVertices; |
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/* Get the value, if not already cached */ |
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if(value == 0) |
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glGetIntegerv(GL_MAX_ELEMENTS_VERTICES, &value); |
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return value; |
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} |
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#endif |
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std::size_t Mesh::indexSize(IndexType type) { |
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switch(type) { |
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case IndexType::UnsignedByte: return 1; |
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case IndexType::UnsignedShort: return 2; |
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case IndexType::UnsignedInt: return 4; |
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} |
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CORRADE_ASSERT_UNREACHABLE(); |
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} |
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Mesh::Mesh(MeshPrimitive primitive): _primitive(primitive), _vertexCount(0), _indexCount(0) |
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#ifndef MAGNUM_TARGET_GLES2 |
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, _indexStart(0), _indexEnd(0) |
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#endif |
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, _indexOffset(0), _indexType(IndexType::UnsignedInt), _indexBuffer(nullptr) |
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{ |
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(this->*Context::current()->state().mesh->createImplementation)(); |
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} |
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Mesh::~Mesh() { |
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/* Moved out, nothing to do */ |
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if(!_id) return; |
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/* Remove current vao from the state */ |
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GLuint& current = Context::current()->state().mesh->currentVAO; |
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if(current == _id) current = 0; |
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(this->*Context::current()->state().mesh->destroyImplementation)(); |
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} |
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Mesh::Mesh(Mesh&& other) noexcept: _id(other._id), _primitive(other._primitive), _vertexCount(other._vertexCount), _indexCount(other._indexCount) |
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#ifndef MAGNUM_TARGET_GLES2 |
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, _indexStart(other._indexStart), _indexEnd(other._indexEnd) |
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#endif |
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, _indexOffset(other._indexOffset), _indexType(other._indexType), _indexBuffer(other._indexBuffer), _attributes(std::move(other._attributes)) |
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#ifndef MAGNUM_TARGET_GLES2 |
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, _integerAttributes(std::move(other._integerAttributes)) |
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#ifndef MAGNUM_TARGET_GLES |
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, _longAttributes(std::move(other._longAttributes)) |
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#endif |
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#endif |
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{ |
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other._id = 0; |
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} |
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Mesh& Mesh::operator=(Mesh&& other) noexcept { |
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std::swap(_id, other._id); |
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std::swap(_primitive, other._primitive); |
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std::swap(_vertexCount, other._vertexCount); |
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std::swap(_indexCount, other._indexCount); |
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#ifndef MAGNUM_TARGET_GLES2 |
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std::swap(_indexStart, other._indexStart); |
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std::swap(_indexEnd, other._indexEnd); |
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#endif |
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std::swap(_indexOffset, other._indexOffset); |
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std::swap(_indexType, other._indexType); |
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std::swap(_indexBuffer, other._indexBuffer); |
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std::swap(_attributes, other._attributes); |
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#ifndef MAGNUM_TARGET_GLES2 |
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std::swap(_integerAttributes, other._integerAttributes); |
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#ifndef MAGNUM_TARGET_GLES |
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std::swap(_longAttributes, other._longAttributes); |
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#endif |
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#endif |
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return *this; |
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} |
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std::string Mesh::label() const { |
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#ifndef MAGNUM_TARGET_GLES |
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return Context::current()->state().debug->getLabelImplementation(GL_VERTEX_ARRAY, _id); |
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#else |
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return Context::current()->state().debug->getLabelImplementation(GL_VERTEX_ARRAY_KHR, _id); |
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#endif |
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} |
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Mesh& Mesh::setLabel(const std::string& label) { |
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#ifndef MAGNUM_TARGET_GLES |
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Context::current()->state().debug->labelImplementation(GL_VERTEX_ARRAY, _id, label); |
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#else |
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Context::current()->state().debug->labelImplementation(GL_VERTEX_ARRAY_KHR, _id, label); |
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#endif |
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return *this; |
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} |
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Mesh& Mesh::setIndexBuffer(Buffer& buffer, GLintptr offset, IndexType type, UnsignedInt start, UnsignedInt end) { |
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#if defined(CORRADE_TARGET_NACL) || defined(CORRADE_TARGET_EMSCRIPTEN) |
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CORRADE_ASSERT(buffer.targetHint() == Buffer::Target::ElementArray, |
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"Mesh::setIndexBuffer(): the buffer has unexpected target hint, expected" << Buffer::Target::ElementArray << "but got" << buffer.targetHint(), *this); |
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#endif |
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_indexOffset = offset; |
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_indexType = type; |
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#ifndef MAGNUM_TARGET_GLES2 |
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_indexStart = start; |
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_indexEnd = end; |
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#else |
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static_cast<void>(start); |
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static_cast<void>(end); |
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#endif |
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(this->*Context::current()->state().mesh->bindIndexBufferImplementation)(buffer); |
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return *this; |
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} |
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#ifndef MAGNUM_TARGET_GLES2 |
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void Mesh::drawInternal(Int firstVertex, Int vertexCount, GLintptr indexOffset, Int indexCount, Int indexStart, Int indexEnd) |
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#else |
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void Mesh::drawInternal(Int firstVertex, Int vertexCount, GLintptr indexOffset, Int indexCount) |
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#endif |
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{ |
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/* Nothing to draw */ |
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if(!vertexCount && !indexCount) return; |
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(this->*Context::current()->state().mesh->bindImplementation)(); |
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/* Non-indexed mesh */ |
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if(!indexCount) |
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glDrawArrays(GLenum(_primitive), firstVertex, vertexCount); |
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#ifndef MAGNUM_TARGET_GLES2 |
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/* Indexed mesh with specified range */ |
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else if(indexEnd) |
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glDrawRangeElements(GLenum(_primitive), indexStart, indexEnd, indexCount, GLenum(_indexType), reinterpret_cast<GLvoid*>(indexOffset)); |
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#endif |
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/* Indexed mesh without specified range */ |
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else |
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glDrawElements(GLenum(_primitive), indexCount, GLenum(_indexType), reinterpret_cast<GLvoid*>(indexOffset)); |
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(this->*Context::current()->state().mesh->unbindImplementation)(); |
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} |
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void Mesh::bindVAO(GLuint vao) { |
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/** @todo Re-enable when extension loader is available for ES */ |
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GLuint& current = Context::current()->state().mesh->currentVAO; |
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if(current != vao) { |
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#ifndef MAGNUM_TARGET_GLES2 |
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glBindVertexArray(current = vao); |
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#else |
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CORRADE_INTERNAL_ASSERT(false); |
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//glBindVertexArrayOES(current = vao); |
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#endif |
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} |
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} |
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void Mesh::attributePointerInternal(const Attribute& attribute) { |
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(this->*Context::current()->state().mesh->attributePointerImplementation)(attribute); |
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} |
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#ifndef MAGNUM_TARGET_GLES2 |
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void Mesh::attributePointerInternal(const IntegerAttribute& attribute) { |
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(this->*Context::current()->state().mesh->attributeIPointerImplementation)(attribute); |
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} |
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#ifndef MAGNUM_TARGET_GLES |
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void Mesh::attributePointerInternal(const LongAttribute& attribute) { |
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(this->*Context::current()->state().mesh->attributeLPointerImplementation)(attribute); |
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} |
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#endif |
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#endif |
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void Mesh::vertexAttribPointer(const Attribute& attribute) { |
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glEnableVertexAttribArray(attribute.location); |
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attribute.buffer->bind(Buffer::Target::Array); |
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glVertexAttribPointer(attribute.location, attribute.size, attribute.type, attribute.normalized, attribute.stride, reinterpret_cast<const GLvoid*>(attribute.offset)); |
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} |
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#ifndef MAGNUM_TARGET_GLES2 |
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void Mesh::vertexAttribPointer(const IntegerAttribute& attribute) { |
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glEnableVertexAttribArray(attribute.location); |
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attribute.buffer->bind(Buffer::Target::Array); |
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glVertexAttribIPointer(attribute.location, attribute.size, attribute.type, attribute.stride, reinterpret_cast<const GLvoid*>(attribute.offset)); |
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} |
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#ifndef MAGNUM_TARGET_GLES |
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void Mesh::vertexAttribPointer(const LongAttribute& attribute) { |
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glEnableVertexAttribArray(attribute.location); |
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attribute.buffer->bind(Buffer::Target::Array); |
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glVertexAttribLPointer(attribute.location, attribute.size, attribute.type, attribute.stride, reinterpret_cast<const GLvoid*>(attribute.offset)); |
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} |
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#endif |
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#endif |
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void Mesh::createImplementationDefault() { _id = 0; } |
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void Mesh::createImplementationVAO() { |
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/** @todo Get some extension wrangler instead to avoid linker errors to glGenVertexArrays() on ES2 */ |
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#ifndef MAGNUM_TARGET_GLES2 |
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glGenVertexArrays(1, &_id); |
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#else |
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//glGenVertexArraysOES(1, &_id); |
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CORRADE_INTERNAL_ASSERT(false); |
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#endif |
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} |
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void Mesh::destroyImplementationDefault() {} |
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void Mesh::destroyImplementationVAO() { |
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/** @todo Get some extension wrangler instead to avoid linker errors to glDeleteVertexArrays() on ES2 */ |
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#ifndef MAGNUM_TARGET_GLES2 |
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glDeleteVertexArrays(1, &_id); |
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#else |
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//glDeleteVertexArraysOES(1, &_id); |
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CORRADE_INTERNAL_ASSERT(false); |
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#endif |
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} |
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void Mesh::attributePointerImplementationDefault(const Attribute& attribute) { |
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#if defined(CORRADE_TARGET_NACL) || defined(CORRADE_TARGET_EMSCRIPTEN) |
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CORRADE_ASSERT(attribute.buffer->targetHint() == Buffer::Target::Array, |
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"Mesh::addVertexBuffer(): the buffer has unexpected target hint, expected" << Buffer::Target::Array << "but got" << attribute.buffer->targetHint(), ); |
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#endif |
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_attributes.push_back(attribute); |
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} |
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void Mesh::attributePointerImplementationVAO(const Attribute& attribute) { |
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#if defined(CORRADE_TARGET_NACL) || defined(CORRADE_TARGET_EMSCRIPTEN) |
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CORRADE_ASSERT(attribute.buffer->targetHint() == Buffer::Target::Array, |
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"Mesh::addVertexBuffer(): the buffer has unexpected target hint, expected" << Buffer::Target::Array << "but got" << attribute.buffer->targetHint(), ); |
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#endif |
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bindVAO(_id); |
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vertexAttribPointer(attribute); |
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} |
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#ifndef MAGNUM_TARGET_GLES |
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void Mesh::attributePointerImplementationDSA(const Attribute& attribute) { |
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glEnableVertexArrayAttribEXT(_id, attribute.location); |
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glVertexArrayVertexAttribOffsetEXT(_id, attribute.buffer->id(), attribute.location, attribute.size, attribute.type, attribute.normalized, attribute.stride, attribute.offset); |
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} |
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#endif |
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#ifndef MAGNUM_TARGET_GLES2 |
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void Mesh::attributePointerImplementationDefault(const IntegerAttribute& attribute) { |
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_integerAttributes.push_back(attribute); |
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} |
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void Mesh::attributePointerImplementationVAO(const IntegerAttribute& attribute) { |
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bindVAO(_id); |
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vertexAttribPointer(attribute); |
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} |
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#ifndef MAGNUM_TARGET_GLES |
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void Mesh::attributePointerImplementationDSA(const IntegerAttribute& attribute) { |
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glEnableVertexArrayAttribEXT(_id, attribute.location); |
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glVertexArrayVertexAttribIOffsetEXT(_id, attribute.buffer->id(), attribute.location, attribute.size, attribute.type, attribute.stride, attribute.offset); |
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} |
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#endif |
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#ifndef MAGNUM_TARGET_GLES |
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void Mesh::attributePointerImplementationDefault(const LongAttribute& attribute) { |
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_longAttributes.push_back(attribute); |
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} |
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void Mesh::attributePointerImplementationVAO(const LongAttribute& attribute) { |
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bindVAO(_id); |
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vertexAttribPointer(attribute); |
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} |
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void Mesh::attributePointerImplementationDSA(const LongAttribute& attribute) { |
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glEnableVertexArrayAttribEXT(_id, attribute.location); |
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glVertexArrayVertexAttribLOffsetEXT(_id, attribute.buffer->id(), attribute.location, attribute.size, attribute.type, attribute.stride, attribute.offset); |
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} |
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#endif |
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#endif |
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void Mesh::bindIndexBufferImplementationDefault(Buffer& buffer) { |
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_indexBuffer = &buffer; |
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} |
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void Mesh::bindIndexBufferImplementationVAO(Buffer& buffer) { |
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bindVAO(_id); |
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/* Reset ElementArray binding to force explicit glBindBuffer call later */ |
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/** @todo Do this cleaner way */ |
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Context::current()->state().buffer->bindings[Implementation::BufferState::indexForTarget(Buffer::Target::ElementArray)] = 0; |
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buffer.bind(Buffer::Target::ElementArray); |
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} |
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void Mesh::bindImplementationDefault() { |
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/* Specify vertex attributes */ |
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for(const Attribute& attribute: _attributes) |
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vertexAttribPointer(attribute); |
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#ifndef MAGNUM_TARGET_GLES2 |
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for(const IntegerAttribute& attribute: _integerAttributes) |
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vertexAttribPointer(attribute); |
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#ifndef MAGNUM_TARGET_GLES |
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for(const LongAttribute& attribute: _longAttributes) |
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vertexAttribPointer(attribute); |
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#endif |
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#endif |
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/* Bind index buffer, if the mesh is indexed */ |
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if(_indexCount) _indexBuffer->bind(Buffer::Target::ElementArray); |
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} |
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void Mesh::bindImplementationVAO() { |
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bindVAO(_id); |
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} |
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void Mesh::unbindImplementationDefault() { |
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for(const Attribute& attribute: _attributes) |
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glDisableVertexAttribArray(attribute.location); |
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#ifndef MAGNUM_TARGET_GLES2 |
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for(const IntegerAttribute& attribute: _integerAttributes) |
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glDisableVertexAttribArray(attribute.location); |
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#ifndef MAGNUM_TARGET_GLES |
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for(const LongAttribute& attribute: _longAttributes) |
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glDisableVertexAttribArray(attribute.location); |
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#endif |
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#endif |
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} |
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void Mesh::unbindImplementationVAO() {} |
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#ifndef DOXYGEN_GENERATING_OUTPUT |
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Debug operator<<(Debug debug, MeshPrimitive value) { |
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switch(value) { |
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#define _c(value) case MeshPrimitive::value: return debug << "MeshPrimitive::" #value; |
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_c(Points) |
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_c(LineStrip) |
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_c(LineLoop) |
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_c(Lines) |
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#ifndef MAGNUM_TARGET_GLES |
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_c(LineStripAdjacency) |
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_c(LinesAdjacency) |
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#endif |
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_c(TriangleStrip) |
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_c(TriangleFan) |
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_c(Triangles) |
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#ifndef MAGNUM_TARGET_GLES |
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_c(TriangleStripAdjacency) |
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_c(TrianglesAdjacency) |
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_c(Patches) |
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#endif |
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#undef _c |
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} |
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return debug << "MeshPrimitive::(invalid)"; |
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} |
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Debug operator<<(Debug debug, Mesh::IndexType value) { |
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switch(value) { |
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#define _c(value) case Mesh::IndexType::value: return debug << "Mesh::IndexType::" #value; |
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_c(UnsignedByte) |
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_c(UnsignedShort) |
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_c(UnsignedInt) |
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#undef _c |
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} |
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return debug << "Mesh::IndexType::(invalid)"; |
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} |
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#endif |
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} |
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namespace Corrade { namespace Utility { |
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std::string ConfigurationValue<Magnum::MeshPrimitive>::toString(Magnum::MeshPrimitive value, ConfigurationValueFlags) { |
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switch(value) { |
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#define _c(value) case Magnum::MeshPrimitive::value: return #value; |
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_c(Points) |
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_c(LineStrip) |
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_c(LineLoop) |
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_c(Lines) |
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#ifndef MAGNUM_TARGET_GLES |
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_c(LineStripAdjacency) |
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_c(LinesAdjacency) |
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#endif |
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_c(TriangleStrip) |
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_c(TriangleFan) |
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_c(Triangles) |
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#ifndef MAGNUM_TARGET_GLES |
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_c(TriangleStripAdjacency) |
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_c(TrianglesAdjacency) |
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_c(Patches) |
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#endif |
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#undef _c |
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} |
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return {}; |
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} |
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Magnum::MeshPrimitive ConfigurationValue<Magnum::MeshPrimitive>::fromString(const std::string& stringValue, ConfigurationValueFlags) { |
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#define _c(value) if(stringValue == #value) return Magnum::MeshPrimitive::value; |
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_c(LineStrip) |
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_c(LineLoop) |
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_c(Lines) |
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#ifndef MAGNUM_TARGET_GLES |
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_c(LineStripAdjacency) |
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_c(LinesAdjacency) |
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#endif |
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_c(TriangleStrip) |
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_c(TriangleFan) |
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_c(Triangles) |
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#ifndef MAGNUM_TARGET_GLES |
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_c(TriangleStripAdjacency) |
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_c(TrianglesAdjacency) |
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_c(Patches) |
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#endif |
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#undef _c |
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return Magnum::MeshPrimitive::Points; |
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} |
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std::string ConfigurationValue<Magnum::Mesh::IndexType>::toString(Magnum::Mesh::IndexType value, ConfigurationValueFlags) { |
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switch(value) { |
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#define _c(value) case Magnum::Mesh::IndexType::value: return #value; |
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_c(UnsignedByte) |
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_c(UnsignedShort) |
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_c(UnsignedInt) |
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#undef _c |
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} |
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return {}; |
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} |
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Magnum::Mesh::IndexType ConfigurationValue<Magnum::Mesh::IndexType>::fromString(const std::string& stringValue, ConfigurationValueFlags) { |
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#define _c(value) if(stringValue == #value) return Magnum::Mesh::IndexType::value; |
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_c(UnsignedByte) |
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_c(UnsignedShort) |
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_c(UnsignedInt) |
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#undef _c |
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return Magnum::Mesh::IndexType::UnsignedInt; |
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} |
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}}
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