Class: Gosu::Texture

Inherits:
Object
  • Object
show all
Defined in:
lib/gosu_android/graphics/texture.rb

Instance Method Summary collapse

Constructor Details

#initialize(size, gl) ⇒ Texture

Returns a new instance of Texture.



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# File 'lib/gosu_android/graphics/texture.rb', line 8

def initialize(size, gl)
  @size = size
  @allocator = BlockAllocator.new(@size, @size)
  @num = 0
  @gl = gl
  @name = [0].to_java(:int)
  @gl.glGenTextures(1, @name, 0)
  if @name[0] == -1
    raise "Couldn't create OpenGL texture"
  end
  @gl.glBindTexture(JavaImports::GL10::GL_TEXTURE_2D, @name[0])

  @gl.glTexImage2D(JavaImports::GL10::GL_TEXTURE_2D, 0, JavaImports::GL10::GL_RGBA, @allocator.width,
    @allocator.height, 0, JavaImports::GL10::GL_RGBA, JavaImports::GL10::GL_UNSIGNED_BYTE, nil)
=begin
  #TODO Should create an empty texture to be filled later
  pixel = [0]
  pbb = JavaImports::ByteBuffer.allocateDirect(pixel.length*4)
  pbb.order(JavaImports::ByteOrder.nativeOrder)
  pixel_buffer = pbb.asIntBuffer
  pixel_buffer.put(pixel.to_java(:int))
  pixel_buffer.position(0)
  JavaImports::GLUtils.texImage2D(JavaImports::GL10::GL_TEXTURE_2D, 0, 4, @allocator.width, @allocator.height, 0,
             JavaImports::GL10::GL_RGBA, JavaImports::GL10::GL_UNSIGNED_BYTE, pixel_buffer)

  @gl.glTexImage2D(JavaImports::GL10::GL_TEXTURE_2D, 0, 4, @allocator.width, @allocator.height, 0,
             JavaImports::GL10::GL_RGBA, JavaImports::GL10::GL_UNSIGNED_BYTE, pixel_buffer)

  @gl.glTexParameterf(JavaImports::GL10::GL_TEXTURE_2D,
    JavaImports::GL10::GL_TEXTURE_MIN_FILTER, JavaImports::GL10::GL_LINEAR)
  @gl.glTexParameteri(JavaImports::GL10::GL_TEXTURE_2D,
    JavaImports::GL10::GL_TEXTURE_WRAP_S, JavaImports::GL10::GL_CLAMP_TO_EDGE)
  @gl.glTexParameteri(JavaImports::GL10::GL_TEXTURE_2D,
    JavaImports::GL10::GL_TEXTURE_WRAP_T, JavaImports::GL10::GL_CLAMP_TO_EDGE)
=end
  @gl.glTexParameterf(JavaImports::GL10::GL_TEXTURE_2D, JavaImports::GL10::GL_TEXTURE_MIN_FILTER, JavaImports::GL10::GL_NEAREST)
  @gl.glTexParameterf(JavaImports::GL10::GL_TEXTURE_2D, JavaImports::GL10::GL_TEXTURE_MAG_FILTER, JavaImports::GL10::GL_LINEAR)
end

Instance Method Details

#finalize ⇒ Object 



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# File 'lib/gosu_android/graphics/texture.rb', line 47

def finalize
  tbb = (JavaImports::ByteBuffer.allocateDirect(4))
  tbb.order(JavaImports::ByteOrder.nativeOrder)
  texture_buffer = tbb.asIntBuffer
  texture_buffer.put(@name)
  texture_buffer.position(0)      
  @gl.glDeleteTextures(1, texture_buffer)
end

#free(x, y) ⇒ Object 



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# File 'lib/gosu_android/graphics/texture.rb', line 82

def free(x, y)
  @allocator.free(x, y)
  @num -= 1
end

#size ⇒ Object 



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# File 'lib/gosu_android/graphics/texture.rb', line 60

def size
  @allocator.width
end

#tex_name ⇒ Object 



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# File 'lib/gosu_android/graphics/texture.rb', line 56

def tex_name
  @name[0]
end

#try_alloc(graphics, queues, ptr, bmp, padding) ⇒ Object 



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# File 'lib/gosu_android/graphics/texture.rb', line 64

def try_alloc(graphics, queues, ptr, bmp, padding)
  alloc_info = @allocator.alloc(bmp.width, bmp.height)
  if (not alloc_info[0])
      return nil
  end
  block = alloc_info[1]
  result = TexChunk.new(graphics, queues, ptr, block.left + padding, block.top + padding,
                            block.width - 2 * padding, block.height - 2 * padding, padding)

  @gl.glTexSubImage2D(JavaImports::GL10::GL_TEXTURE_2D, 0, block.left, block.top, block.width, block.height,
    Color::GL_FORMAT, JavaImports::GL10::GL_UNSIGNED_BYTE, bmp.data_java)
  #@gl.glBindTexture(JavaImports::GL10::GL_TEXTURE_2D, @name[0])
  #JavaImports::GLUtils.texImage2D(JavaImports::GL10::GL_TEXTURE_2D, 0, bmp.to_open_gl, 0)

  @num += 1
  result
end