opengl

[aschao]

我在银河麒麟上编译使用，正常播放，但是显示黑屏，汇报一下错误，请问我要注意一些什么， （在unbutu上能成功使用）

QOpenGLShader::compile(Fragment): 0:1(1): error: No precision specified in this scope for type vec2' 0:1(119): error: No precision specified in this scope for type vec3'
0:1(129): error: No precision specified in this scope for type `vec3'

*** Problematic Fragment shader source code ***
#ifndef GL_FRAGMENT_PRECISION_HIGH
#define highp mediump
#endif
#line 1
varying vec2 textureOut; uniform sampler2D tex_y; uniform sampler2D tex_u; uniform sampler2D tex_v; void main(void) { vec3 yuv; vec3 rgb; yuv.x = texture2D(tex_y, textureOut).r; yuv.y = texture2D(tex_u, textureOut).r - 0.5; yuv.z = texture2D(tex_v, textureOut).r - 0.5; rgb = mat3( 1, 1, 1, 0, -0.39465, 2.03211, 1.13983, -0.58060, 0) * yuv; gl_FragColor = vec4(rgb, 1); }

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QOpenGLShader::link: "error: linking with uncompiled/unspecialized shader"
QOpenGLShader::link: "error: linking with uncompiled/unspecialized shader"
QOpenGLShaderProgram::uniformLocation( tex_y ): shader program is not linked
QOpenGLShaderProgram::uniformLocation( tex_u ): shader program is not linked
QOpenGLShaderProgram::uniformLocation( tex_v ): shader program is not linked
setVideoWidth 1440 900 false
QOpenGLShader::link: "error: linking with uncompiled/unspecialized shader"
QOpenGLShader::link: "error: linking with uncompiled/unspecialized shader"
QOpenGLShader::link: "error: linking with uncompiled/unspecialized shader"