Question

我正在尝试使用NVIDIA Quadro 5000上的立体3D渲染绘制从.obj文件加载的基本网格。据我所知，我认为我的左眼和右眼视锥和偏移设置相应，但我的主要问题是写入和清除BACK_LEFT和BACK_RIGHT缓冲区。它似乎完全错过了第一部分，只绘制了BACK_RIGHT缓冲区（渲染循环的第二部分）。如果我能得到一些关于如何在同一帧中写入/读取和清除这些缓冲区的指针，那将是很好的。这是一个Linux应用程序，因此glXSwap（），不使用过剩或glew并使用glm进行数学运算。这是我的绘图循环：

void GLDraw::Draw()
{
    //initialise shader in frame
    shader->UseShaderProgram();

    //select back_left buffer
    glDrawBuffer(GL_BACK_LEFT);
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    //set projection and view for back_left
    projectionMatrix = glm::frustum(-xCoord - frustumAssymmetry, xCoord - frustumAssymmetry, -yCoord, yCoord, 0.1f, 200.0f);
    projectionMatrix *= glm::translate(glm::mat4(1.0f), glm::vec3(eyeOffset, 0.0f, 0.0f));
    glUniformMatrix4fv(projectionMatrixLocation, 1, GL_FALSE, value_ptr(projectionMatrix));
    glUniformMatrix4fv(viewMatrixLocation, 1, GL_FALSE, &viewMatrix[0][0]);

    //set model matrix for rendering calls   
    modelMatrix = scale(mat4(1.0f), vec3(0.7, 0.7, 0.5f));
    modelMatrix *= translate(mat4(1.0f), vec3(0.0f, 0.0f, 0.0f));
    modelMatrix *= rotate(mat4(1.0f), i+=0.04, vec3(0.0f, 1.0f, 0.0f));
    glUniformMatrix4fv(modelMatrixLocation, 1, GL_FALSE, &modelMatrix[0][0]);

    //draw VAO
    glBindVertexArray(vikingVAO);
    glDrawElements(GL_TRIANGLES, viking_elements.size() * sizeof(viking_elements[0]), GL_UNSIGNED_SHORT, 0);
    glBindVertexArray(0);

    //select back_right buffer  <-- SEEMS TO ONLY RENDER FROM HERE, MISSING THE FIRST PART
    glDrawBuffer(GL_BACK_RIGHT);
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    //set projection and view for back_right
    projectionMatrix = glm::frustum(-xCoord + frustumAssymmetry, xCoord + frustumAssymmetry, -yCoord, yCoord, 0.1f, 200.0f);
    projectionMatrix *= glm::translate(glm::mat4(1.0f), glm::vec3(-eyeOffset, 0.0f, 0.0f));
    glUniformMatrix4fv(projectionMatrixLocation, 1, GL_FALSE, value_ptr(projectionMatrix));
    glUniformMatrix4fv(viewMatrixLocation, 1, GL_FALSE, &viewMatrix[0][0]);

    //set model matrix for rendering calls   
    modelMatrix = scale(mat4(1.0f), vec3(0.7, 0.7, 0.5f));
    modelMatrix *= translate(mat4(1.0f), vec3(0.0f, 0.0f, 0.0f));
    modelMatrix *= rotate(mat4(1.0f), i+=0.04, vec3(0.0f, 1.0f, 0.0f));
    glUniformMatrix4fv(modelMatrixLocation, 1, GL_FALSE, &modelMatrix[0][0]);

    //draw VAO
    glBindVertexArray(vikingVAO);
    glDrawElements(GL_TRIANGLES, viking_elements.size() * sizeof(viking_elements[0]), GL_UNSIGNED_SHORT, 0);
    glBindVertexArray(0);

    //clear shader
    shader->ClearShaderProgram();

    //swap buffers
    glXSwapBuffers(display, win);
}

编辑：意识到如果我在右侧屏幕上运行我的应用程序，它会渲染GL_BACK_RIGHT缓冲区。在左侧屏幕上运行它将绘制GL_BACK_LEFT。

有什么想法吗？监控设置可能吗？

OpenGL的立体3D渲染问题

0 个答案: