頂点、テクスチャ座標、vertexBuffer、indexBuffer、テクスチャバッファなどのプリミティブデータを格納するPrimitiveと呼ばれるobjective-cクラスのnsarrayを使用しようとしています。
しかし、それはテクスチャで長方形を描いているのではありません。同じ情報を含むcstructを試したところ、うまく描画されました。
どこに行けないのかわからない誰かが私にヒントを教えてもらえますか？
//Here is my primitive class.
//It also has Vertex class which has vertex positions and texture coordinates
// This represents one primitive, in this app, it is rectangle
@interface Primitive : NSObject
{
@public
GLuint vertexBuffer;
GLuint indexBuffer;
GLuint textureBuffer;
}
@property (nonatomic, copy) NSArray * vertices; //consist 4 vertices
- (id)initWithVertices:(NSArray *)vertices;
@end
@interface Vertex : NSObject
@property (nonatomic, copy) NSArray * position; //(x,y,z) per vertex
@property (nonatomic, copy) NSArray * textureCoordinate; //(s,t) per vertex
- (id)initWithPointX:(float)x Y:(float)y Z:(float)z;
- (void)printVal;
@end
@implementation Primitive
@synthesize vertices = m_vertices;
- (id)initWithVertices:(NSArray *)vertices
{
self = [super init];
if(self)
{
m_vertices = [[NSArray alloc] initWithArray:vertices];
}
return self;
}
@end
@implementation Vertex
@synthesize position = m_position;
@synthesize textureCoordinate = m_textureCoordinate;
- (id)initWithPointX:(float)x Y:(float)y Z:(float)z
{
self = [super init];
if(self)
{
m_position = [[NSArray alloc] initWithObjects:
[NSNumber numberWithFloat:x],
[NSNumber numberWithFloat:y],
[NSNumber numberWithFloat:z], nil];
}
return self;
}
// and here is how I generate vbo. it's in other file
- (void)setupVertexBufferObjects
{
for(Primitive * primitive in m_primitives)
{
NSLog(@"setting vbo");
glGenBuffers(1, &primitive->vertexBuffer);
glBindBuffer(GL_ARRAY_BUFFER, primitive->vertexBuffer);
glBufferData(GL_ARRAY_BUFFER, sizeof(primitive.vertices),
(__bridge void *)primitive.vertices, GL_STATIC_DRAW);
glGenBuffers(1, &primitive->indexBuffer);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, primitive->indexBuffer);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(Indices), Indices, GL_STATIC_DRAW);
}
}
// and this is how I render, this is also in other file than Primitive and above method
// this one worked fine when I had c struct to provide vertices and texture coordinate
glClearColor(0, 104.0/255, 55.0/255, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
GLuint positionSlot = glGetAttribLocation(m_programHandle, "Position");
glEnableVertexAttribArray(positionSlot);
glVertexAttribPointer(positionSlot, 3, GL_FLOAT, GL_FALSE,
[m_candleModel sizeOfVertex], 0);
GLuint texCoordSlot = glGetAttribLocation(m_programHandle, "TexCoordIn");
glEnableVertexAttribArray(texCoordSlot);
GLuint textureUniform = glGetUniformLocation(m_programHandle, "Texutre");
glVertexAttribPointer(texCoordSlot, 2, GL_FLOAT, GL_FALSE,
[m_candleModel sizeOfVertex], (GLvoid *)(sizeof(float) * 3));
GLuint floorTexture = [m_candleModel getTexture];
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, floorTexture);
glUniform1i(textureUniform, 0);
glDrawElements(GL_TRIANGLES, sizeof(Indices)/sizeof(Indices[0]), GL_UNSIGNED_BYTE, 0);
glDisableVertexAttribArray(positionSlot);
[m_context presentRenderbuffer:GL_RENDERBUFFER];