OpenGL:纹理渲染被卡住

当我使用运行drawPlane时

glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);

一切都很好。图像和我的三角形都被渲染了。

然而，在更改为时

glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);

纹理不再更新，只有我的三角形。。。

我该怎么修？

void drawCursorHit() {
float cx = (hit_coord.x / (float)wWnd) * 2 - 1;
float cy = ((hit_coord.y / (float)hWnd) * 2 - 1)*-1.f;
float lx = 0.02f;
float ly = lx * 16. / 9.;
glLineWidth(1.5);
glColor3f(0.25f, 0.55f, 0.85f);
glBegin(GL_LINES);
glVertex3f(cx - lx, cy, 0.0);
glVertex3f(cx + lx, cy, 0.0);
glVertex3f(cx, cy - ly, 0.0);
glVertex3f(cx, cy + ly, 0.0);
glEnd();
}
void drawPlane() {
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
glColor3f(0.25f, 0.55f, 0.85f);
glBegin(GL_TRIANGLES);
for (int i = 0; i < continuous_plane.triangles.size(); i++)
{
sl::float3 vertices_1 = continuous_plane.vertices.at(continuous_plane.triangles.at(i).x);
sl::float3 vertices_2 = continuous_plane.vertices.at(continuous_plane.triangles.at(i).y);
sl::float3 vertices_3 = continuous_plane.vertices.at(continuous_plane.triangles.at(i).z);
int pixel_x_1 = static_cast<int>(camera_cx + (vertices_1.x * camera_fx) / vertices_1.z);
int pixel_y_1 = static_cast<int>(camera_cy + (vertices_1.y * camera_fy) / vertices_1.z);
int pixel_x_2 = static_cast<int>(camera_cx + (vertices_2.x * camera_fx) / vertices_2.z);
int pixel_y_2 = static_cast<int>(camera_cy + (vertices_2.y * camera_fy) / vertices_2.z);
int pixel_x_3 = static_cast<int>(camera_cx + (vertices_3.x * camera_fx) / vertices_3.z);
int pixel_y_3 = static_cast<int>(camera_cy + (vertices_3.y * camera_fy) / vertices_3.z);
float x_gl_1 = (pixel_x_1 / (float)wWnd) * 2 - 1;
float y_gl_1 = ((pixel_y_1 / (float)hWnd) * 2 - 1)*-1.f;
float x_gl_2 = (pixel_x_2 / (float)wWnd) * 2 - 1;
float y_gl_2 = ((pixel_y_2 / (float)hWnd) * 2 - 1)*-1.f;
float x_gl_3 = (pixel_x_3 / (float)wWnd) * 2 - 1;
float y_gl_3 = ((pixel_y_3 / (float)hWnd) * 2 - 1)*-1.f;

glVertex3f(x_gl_1, y_gl_1, 0.0);
glVertex3f(x_gl_2, y_gl_2, 0.0);
glVertex3f(x_gl_3, y_gl_3, 0.0);
}
glEnd();
}
/**
OpenGL draw function
Render Image and wireframe mesh into a texture using the FrameBuffer
**/
void drawGL() {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glEnable(GL_TEXTURE_2D);
glActiveTexture(GL_TEXTURE0);
glViewport(0, 0, wWnd, hWnd);
// Render image and wireframe mesh into a texture using frame buffer
// Bind the frame buffer and specify the viewport (full screen)
glBindFramebuffer(GL_FRAMEBUFFER, fbo);
// Render the ZED view (Left) in the framebuffer
glUseProgram(shader_image->getProgramId());
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, imageTex);
glUniform1i(texID, 0);
//invert y axis and color for this image (since its reverted from cuda array)
glUniform1i(glGetUniformLocation(shader_image->getProgramId(), "revert"), 1);
glUniform1i(glGetUniformLocation(shader_image->getProgramId(), "rgbflip"), 1);
glEnableVertexAttribArray(0);
glBindBuffer(GL_ARRAY_BUFFER, quad_vb);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, (void*)0);
glDrawArrays(GL_TRIANGLES, 0, 6);
glDisableVertexAttribArray(0);
glUseProgram(0);
// Unbind the framebuffer since the texture is now updated
glBindFramebuffer(GL_FRAMEBUFFER, 0);
// Render the texture to the screen
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
glUseProgram(shader_image->getProgramId());
glBindTexture(GL_TEXTURE_2D, renderedTexture);
glUniform1i(texID, 0);
glUniform1i(glGetUniformLocation(shader_image->getProgramId(), "revert"), 0);
glUniform1i(glGetUniformLocation(shader_image->getProgramId(), "rgbflip"), 0);
glEnableVertexAttribArray(0);
glBindBuffer(GL_ARRAY_BUFFER, quad_vb);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, (void*)0);
glDrawArrays(GL_TRIANGLES, 0, 6);
glDisableVertexAttribArray(0);
glUseProgram(0);
glDisable(GL_TEXTURE_2D);
if (user_hit_the_screen > 0)
{
drawPlane();
drawCursorHit();
}
// Swap buffers
glutSwapBuffers();
}