GLSL

Question

ile kamalama GLSL ile küp kırma işlemini denedim. Ancak, nesne siyahtır.

Nesne neden gölgede etkin değil?

Tamamlayıcı:

• Görüntü okunabilir.

• projeksiyonMatrix, viewMatrix ve baseColor çalışıyor.

  glCreateTextures(GL_TEXTURE_CUBE_MAP, 1, &_texture); 
  glActiveTexture(GL_TEXTURE1); // add 
  glBindTexture(GL_TEXTURE_CUBE_MAP, _texture); 
  QImage posx; 
  bool complateLoadCubeMapPosX = posx.load(("D:/posx.jpg")); 
  assert(complateLoadCubeMapPosX); 
  
  QImage negx; 
  bool complateLoadCubeMapNegX = negx.load(("D:/negx.jpg")); 
  assert(complateLoadCubeMapNegX); 
  
  QImage posy; 
  bool complateLoadCubeMapPosY = posy.load(("D:/posy.jpg")); 
  assert(complateLoadCubeMapPosY); 
  
  QImage negy; 
  bool complateLoadCubeMapNegY = negy.load(("D:/negy.jpg")); 
  assert(complateLoadCubeMapNegY); 
  
  QImage posz; 
  bool complateLoadCubeMapPosZ = posz.load(("D:/posz.jpg")); 
  assert(complateLoadCubeMapPosZ); 
  
  QImage negz; 
  bool complateLoadCubeMapNegZ = negz.load(("D:/negz.jpg")); 
  assert(complateLoadCubeMapNegZ); 
  glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_LINEAR);  // add 
  glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR);  // add 
  glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); // add 
  glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); // add 
  glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE); // add 
  glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X, 0, GL_RGB, posx.width(), posx.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE, posx.bits()); 
  glTexImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_X, 0, GL_RGB, negx.width(), negx.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE, negx.bits()); 
  glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_Y, 0, GL_RGB, posy.width(), posy.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE, posy.bits()); 
  glTexImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, 0, GL_RGB, negy.width(), negy.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE, negy.bits()); 
  glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_Z, 0, GL_RGB, posz.width(), posz.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE, posz.bits()); 
  glTexImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_Z, 0, GL_RGB, negz.width(), negz.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE, negz.bits()); 
  
  glBindTexture(GL_TEXTURE_CUBE_MAP, 0); 
  glActiveTexture(GL_TEXTURE0); // add 
  MaterialManager::getInstance().createProgram("cubemap"); 
  

Rendering kodu:

GLuint program = MaterialManager::getInstance().getShader("cubemap"); 
    glUseProgram(program); 
    glUniformMatrix4fv(glGetUniformLocation(program, "projMat"), 1, GL_FALSE, projectionMatrix.data()); 
    glUniformMatrix4fv(glGetUniformLocation(program, "viewMat"), 1, GL_FALSE, viewMatrix.data()); 
    glUniform4f(glGetUniformLocation(program, "baseColor"), 0.8f, 0.8f, 0.8f, 1.0f); 
    glUniform1i(glGetUniformLocation(program, "envMap"), 1); // change 
    glBindVertexArray(_vao); 
    glActiveTexture(GL_TEXTURE1); // add 
    glBindTexture(GL_TEXTURE_CUBE_MAP, _texture); // add 
    glDrawArrays(GL_TRIANGLES, 0, _normals.size()); 
    glActiveTexture(GL_TEXTURE0); // add 
    glBindVertexArray(0); 

Fragman Shader:

#version 450 
#extension GL_NV_shadow_samplers_cube : enable 
in vec4 position; 
in vec3 normal; 
out vec4 out_color; 
uniform vec4 baseColor; 
uniform samplerCube envMap; 
... 
void main() 
{ 
    out_color = vec4(textureCube(envMap, vec3(1.0, 0.0, 0.0)).rgb, 1.0); 
} 

current result

Answer 1

Üniforma olarak _texture bağlayıcı konum (envmap) ama bu üniforma gerektiğini bir doku birimi içerir.

glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); 
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); 
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);