38 lines
1.3 KiB
C++
38 lines
1.3 KiB
C++
#include "opengl_mesh.hh"
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#include "opengl_widget.hh"
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#include <QOpenGLFunctions>
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OpenGLMesh::OpenGLMesh(QVector<float> verts, QOpenGLTexture *tex, QOpenGLShaderProgram *program)
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:tex(tex),
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program(program) {
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OpenGLWidget::instance->makeCurrent();
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QOpenGLExtraFunctions *glf = OpenGLWidget::instance;
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nverts = verts.size() / 8;
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glf->glGenVertexArrays(1, &vao);
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glf->glBindVertexArray(vao);
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glf->glGenBuffers(1, &vbo);
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glf->glBindBuffer(GL_ARRAY_BUFFER, vbo);
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glf->glBufferData(GL_ARRAY_BUFFER, nverts * 8 * sizeof (float), verts.data(), GL_STATIC_DRAW);
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glf->glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 8 * sizeof (float), 0);
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glf->glEnableVertexAttribArray(0);
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glf->glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 8 * sizeof (float), (void *) (3 * sizeof (float)));
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glf->glEnableVertexAttribArray(1);
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glf->glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, 8 * sizeof (float), (void *) (6 * sizeof (float)));
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glf->glEnableVertexAttribArray(2);
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OpenGLWidget::instance->doneCurrent();
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}
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void OpenGLMesh::draw(QOpenGLExtraFunctions *f, const QMatrix4x4 &mat) const {
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program->bind();
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program->setUniformValue("model", mat);
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f->glBindVertexArray(vao);
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if (tex) tex->bind();
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f->glDrawArrays(GL_TRIANGLES, 0, nverts);
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if (tex) tex->release();
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f->glBindVertexArray(0);
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program->release();
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}
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