テクスチャは現在のiOSのネイティブでのOpenGL ES 2.0で働い2.0

Question

のOpenGL ESに表示されません。何らかの理由で、私のテクスチャクワッドはレンダリングされませんが、現れません。私はテクスチャの.bmpファイルを読み込もうとしますが、私はそれが通過することを知っています。PolygonRenderer.addTextureに入れたログ関数は、テクスチャのサイズである"Image size: 256, 256"を出力します。

編集：私の.bmpテクスチャはR8、G8、B8形式で保存されます。

VertexShader：

std::string textureVertex = 
    "attribute vec3 vertexloc;            \n" 
    "attribute vec3 vertexcol;            \n" 
    "attribute vec2 vertexuv;            \n" 
    "varying vec2 TexCoords;            \n" 
    "varying vec3 textColor;            \n" 
    "uniform mat4 projection;            \n" 
    "uniform mat4 view;              \n" 
    "uniform mat4 offset;             \n" 
    "void main()               \n" 
    "{                  \n" 
    " gl_Position = projection * view * offset * vec4(vertexloc, 1.0); \n" 
    " TexCoords = vertexuv;            \n" 
    " textColor = vertexcol;            \n" 
    "}"; 

フラグメントシェーダ：

std::string textureFragment = 
    "precision mediump float;            \n" 
    "varying vec2 TexCoords;            \n" 
    "varying vec3 textColor;            \n" 
    "uniform sampler2D text;            \n" 
    "void main()               \n" 
    "{                  \n" 
    " vec4 sampled = vec4(1.0, 1.0, 1.0, texture2D(text, TexCoords).r); \n" 
    " gl_FragColor = vec4(textColor, 1.0) * sampled;      \n" 
    "}"; 

頂点：

x = sWindowWidth/2 - 1000/2; 
    y = - sWindowHeight/2 - 172/2; 
    w = 1000; 
    h = 172; 
    temp = { 
     x,    y + h,   0.3, 
     textureColor.x, textureColor.y, textureColor.z, 
     0, 1, 

     x,    y,    0.3, 
     textureColor.x, textureColor.y, textureColor.z, 
     0, 0, 

     x + w,   y,    0.3, 
     textureColor.x, textureColor.y, textureColor.z, 
     1, 0, 

     x,    y + h,   0.3, 
     textureColor.x, textureColor.y, textureColor.z, 
     0, 1, 

     x + w,   y,    0.3, 
     textureColor.x, textureColor.y, textureColor.z, 
     1, 0, 

     x + w,   y + h,   0.3, 
     textureColor.x, textureColor.y, textureColor.z, 
     1, 1 
    }; 
    polygonRenderer.addLoadingPolygon(temp); 

PolygonRendererの抜粋：

AddLoadingPolygon：

void PolygonRenderer::addLoadingPolygon(std::vector<GLfloat> vertices) { 
    GLuint vertexBuffer; 
    glGenBuffers(1, &vertexBuffer); 
    glBindBuffer(GL_ARRAY_BUFFER, vertexBuffer); 
    glBufferData(GL_ARRAY_BUFFER, vertices.size() * sizeof(GLfloat), 
     vertices.data(), GL_STATIC_DRAW); 
    if(vertexBuffer == 0){ 
     log("gl vertexBuffer not generated"); 
    } 
    loadingPolygons.push_back(PolygonRenderObject{ 
     vertexBuffer, 
     (long)vertices.size()/8, 
     0 
    }); 
} 

AddTexture：

void PolygonRenderer::addTexture(const char* imagePath) { 
    // Data read from the header of the BMP file 
    unsigned char header[54]; // Each BMP file begins by a 54-bytes header 
    unsigned int dataPos;  // Position in the file where the actual data begins 
    unsigned int width, height; 
    unsigned int imageSize; // = width*height*3 
    // Actual RGB data 
    unsigned char * data; 
    // Open the file 
    FILE * file = fopen(imagePath,"rb"); 
    if (!file) { 
     log("Image could not be opened\n"); 
     return; 
    } 
    if (fread(header, 1, 54, file) != 54) { 
     log("Not a correct BMP file"); 
     return; 
    } 
    if (header[0] != 'B' || header[1] != 'M') { 
     log("Not a correct BMP file"); 
     return; 
    } 
    // Read ints from the byte array 
    dataPos  = *(int*)&(header[0x0A]); 
    imageSize = *(int*)&(header[0x22]); 
    width  = *(int*)&(header[0x12]); 
    height  = *(int*)&(header[0x16]); 

    if (imageSize == 0) { 
     imageSize = width * height; 
    } 
    log("Image size: %d, %d", width, height); 
    if (dataPos == 0) { 
     dataPos = 54; 
    } 

    data = new unsigned char[imageSize]; 
    fread(data, 1, imageSize, file); 
    fclose(file); 

    glActiveTexture(GL_TEXTURE0); 

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 

    GLuint textureId; 
    glGenTextures(1, &textureId); 
    glBindTexture(GL_TEXTURE_2D, textureId); 
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, 
     GL_UNSIGNED_BYTE, data); 

    checkForGLError("Add texture:"); 
    log("Texture created: %d", textureId); 
    textures.push_back(textureId); 
} 

この部分のレンダリング：これは単に私が（すべての頂点に行くさせた値に均一に割り当てていなかった、残念ながら

glUseProgram(shader.get(1)); 
     glBindAttribLocation(shader.get(1), 2, "vertexloc"); 
     glBindAttribLocation(shader.get(1), 3, "vertexcol"); 
     glBindAttribLocation(shader.get(1), 4, "vertexuv"); 

     glBindTexture(GL_TEXTURE_2D, textures[0]); 

     glEnableVertexAttribArray(2); 
     glEnableVertexAttribArray(3); 
     glEnableVertexAttribArray(4); 

     glUniformMatrix4fv(viewLocation, 1, GL_FALSE, 
      &frame.combinedMatrix[16 * objects[1].ViewGroup]); 

     glBindBuffer(GL_ARRAY_BUFFER, objects[1].Buffer); 
     glVertexAttribPointer(2, 3, GL_FLOAT, GL_FALSE, 8 * sizeof(GLfloat), 
      0); 

     glBindBuffer(GL_ARRAY_BUFFER, objects[1].Buffer); 
     glVertexAttribPointer(3, 3, GL_FLOAT, GL_FALSE, 8 * sizeof(GLfloat), 
           (GLvoid*)(3 * sizeof(GLfloat))); 

     glBindBuffer(GL_ARRAY_BUFFER, objects[1].Buffer); 
     glVertexAttribPointer(4, 2, GL_FLOAT, GL_FALSE, 8 * sizeof(GLfloat), 
           (GLvoid*)(6 * sizeof(GLfloat))); 

     checkForGLError("In Renderer"); 
     glDrawArrays(GL_TRIANGLES, 0, 6); 
     glBindBuffer(GL_ARRAY_BUFFER, 0); 

     glDisableVertexAttribArray(2); 
     glDisableVertexAttribArray(3); 
     glDisableVertexAttribArray(4); 

Answer 1

0,0）（またはそのようなもの）。