h.264データを取得してYUVバッファにデコードし、ios5とios6でopenglでyupデータを表示しましたが、iPad(ios4.2.1)で実行しようとすると、現在表示できません、すべての画面が緑色です。理由はわかりません。コードは次のとおりです。
-(void)playVideoData:(void *)data
{
if (!_textureY)
{
glGenTextures(1, &_textureY);
glGenTextures(1, &_textureU);
glGenTextures(1, &_textureV);
}
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, _textureY);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RED_EXT, _videoW, _videoH, 0, GL_RED_EXT, GL_UNSIGNED_BYTE, y);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, _textureU);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RED_EXT, _videoW/2, _videoH/2, 0, GL_RED_EXT, GL_UNSIGNED_BYTE, u);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glActiveTexture(GL_TEXTURE2);
glBindTexture(GL_TEXTURE_2D, _textureV);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RED_EXT, _videoW/2, _videoH/2, 0, GL_RED_EXT, GL_UNSIGNED_BYTE, v);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
[self render];
}
- (無効) レンダリング {
glViewport(viewportx,viewporty, VIEWWIDTH, VIEWHEIGHT);
glClearColor(0.0, 0, 0.0, 0);
glClear(GL_COLOR_BUFFER_BIT);
glUseProgram(programId);
// Update uniform value
//glUniform1f(uniforms[UNIFORM_TRANSLATE], 0.0f);
GLuint textureUniformY = glGetUniformLocation(programId, "SamplerY");
GLuint textureUniformU = glGetUniformLocation(programId, "SamplerU");
GLuint textureUniformV = glGetUniformLocation(programId, "SamplerV");
// Update attribute values
glVertexAttribPointer(ARDRONE_ATTRIB_POSITION, 2, GL_FLOAT, 0, 0, squareVertices);
glEnableVertexAttribArray(ARDRONE_ATTRIB_POSITION);
glVertexAttribPointer(ARDRONE_ATTRIB_TEXCOORD, 2, GL_FLOAT, 0, 0, coordVertices);
glEnableVertexAttribArray(ARDRONE_ATTRIB_TEXCOORD);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, _textureY);
glUniform1i(textureUniformY, 0);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, _textureU);
glUniform1i(textureUniformU, 1);
glActiveTexture(GL_TEXTURE2);
glBindTexture(GL_TEXTURE_2D, _textureV);
glUniform1i(textureUniformV, 2);
} -(void)drawFrame2
{
if (context != nil)
{
//make it the current context for rendering
[EAGLContext setCurrentContext:context];
//if our framebuffers have not been created yet, do that now!
if (!defaultFramebuffer)
[self createFramebuffer];
glBindFramebuffer(GL_FRAMEBUFFER, defaultFramebuffer);
[self playVideoData];
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
glBindRenderbuffer(GL_RENDERBUFFER, colorRenderbuffer);
[context presentRenderbuffer:GL_RENDERBUFFER];
}
else
NSLog(@"Context not set!");
}
データを yuv バッファーに入れました。ここに私の fsh と vsh があります。
vsh:
attribute vec4 position; // 1
//uniform float translate;
attribute vec2 TexCoordIn; // New
varying vec2 TexCoordOut; // New
void main(void)
{
gl_Position = position; // 6
TexCoordOut = TexCoordIn;
}
fsh:
varying lowp vec2 TexCoordOut;
uniform sampler2D SamplerY;
uniform sampler2D SamplerU;
uniform sampler2D SamplerV;
void main(void)
{
mediump vec3 yuv;
lowp vec3 rgb;
yuv.x = texture2D(SamplerY, TexCoordOut).r;
yuv.y = texture2D(SamplerU, TexCoordOut).r - 0.5;
yuv.z = texture2D(SamplerV, TexCoordOut).r - 0.5;
rgb = mat3( 1, 1, 1,
0, -0.39465, 2.03211,
1.13983, -0.58060, 0) * yuv;
gl_FragColor = vec4(rgb, 1);
}
iOS4.2 エラーなし、シェーダーは正常にコンパイルされますが、表示できません...