着色器Android版的OpenGL ES [英] Shader for Android OpenGL ES

问题描述

是否有可能使用顶点或像素着色器的Andr​​oid应用程序？ 请尽可能给设置着色的一个实例。

Is it possible to use vertex or pixel shaders in android app? please give an example if possible of setting up shader.

推荐答案

如果您正在打靶的Andr​​iod 2.X / OpenGL ES的2，然后是的，这是可能的。

If you're targetting andriod 2.x / OpengL ES 2, then yes, it's possible.

下面是如何加载着色器code例如：

Here is a code example of how to load a shader:

public int createProgram(String vertexSource, String fragmentSource) {
    int vertexShader = loadShader(GLES20.GL_VERTEX_SHADER, vertexSource);
    int pixelShader = loadShader(GLES20.GL_FRAGMENT_SHADER, fragmentSource);

    int program = GLES20.glCreateProgram();
    if (program != 0) {
        GLES20.glAttachShader(program, vertexShader);
        checkGlError("glAttachShader");
        GLES20.glAttachShader(program, pixelShader);
        checkGlError("glAttachShader");
        GLES20.glLinkProgram(program);
        int[] linkStatus = new int[1];
        GLES20.glGetProgramiv(program, GLES20.GL_LINK_STATUS, linkStatus, 0);
        if (linkStatus[0] != GLES20.GL_TRUE) {
            Log.e(TAG, "Could not link program: ");
            Log.e(TAG, GLES20.glGetProgramInfoLog(program));
            GLES20.glDeleteProgram(program);
            program = 0;
        }
    }
    return program;
}

private int loadShader(int shaderType, String source) {
    int shader = GLES20.glCreateShader(shaderType);
        if (shader != 0) {
            GLES20.glShaderSource(shader, source);
            GLES20.glCompileShader(shader);
            int[] compiled = new int[1];
            GLES20.glGetShaderiv(shader, GLES20.GL_COMPILE_STATUS, compiled, 0);
            if (compiled[0] == 0) {
                Log.e(TAG, "Could not compile shader " + shaderType + ":");
                Log.e(TAG, GLES20.glGetShaderInfoLog(shader));
                GLES20.glDeleteShader(shader);
                shader = 0;
            }
        }
        return shader;
}

这篇关于着色器Android版的OpenGL ES的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！