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41 lines
930 B
C++
41 lines
930 B
C++
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#include <render/DrawBuffer.hpp>
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#include <render/GeometryBuffer.hpp>
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#include <map>
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/* TODO: Come up with a more elegant solution to "WHICH ARRAY IS IT?" */
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std::map<AttributeSemantic, GLuint> semantic_to_attrib_array = {
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{ATRS_Position, 0},
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{ATRS_Normal, 4},
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{ATRS_Colour, 8},
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{ATRS_TexCoord, 12}
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};
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DrawBuffer::DrawBuffer()
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: vao(0)
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{
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}
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DrawBuffer::~DrawBuffer()
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{
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if(vao) {
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glDeleteVertexArrays(1, &vao);
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}
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}
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void DrawBuffer::addGeometry(GeometryBuffer* gbuff)
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{
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if(vao == 0) {
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glGenVertexArrays(1, &vao);
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}
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glBindVertexArray(vao);
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glBindBuffer(GL_ARRAY_BUFFER, gbuff->getVBOName());
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// Iterate the attributes present in the gbuff
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for(const AttributeIndex& at : gbuff->getDataAttributes()) {
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GLuint vaoindex = semantic_to_attrib_array[at.sem];
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glEnableVertexAttribArray(vaoindex);
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glVertexAttribPointer(vaoindex, at.size, GL_FLOAT, GL_FALSE, at.stride, reinterpret_cast<GLvoid*>(at.offset));
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}
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}
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