使用 opengl 渲染着色器时出现条纹

Question

嗨，我在尝试渲染我的着色器时遇到了这个恼人的问题，它占用了屏幕的 1/4：

我在 MCP（Minecraft Coder Pack）上使用 java。

当我首先渲染它而不改变任何东西时，它只是在左下角绘制它：

但是当我将分辨率加倍时，它会占据整个视口，它会这样做：

shader来自shadertoy，这里是渲染方法：

public class GLSLSandboxShader {
    private final int programId;
    private final int timeUniform;
    private final int mouseUniform;
    private final int resolutionUniform;
    private final int texIn;

    public GLSLSandboxShader(String fragmentShaderLocation) throws IOException {
        int program = glCreateProgram();

        glAttachShader(program, createShader(GLSLSandboxShader.class.getClassLoader().getResourceAsStream("assets/minecraft/passthrough.vsh"), GL_VERTEX_SHADER));
        glAttachShader(program, createShader(GLSLSandboxShader.class.getClassLoader().getResourceAsStream(fragmentShaderLocation), GL_FRAGMENT_SHADER));

        glLinkProgram(program);

        int linked = glGetProgrami(program, GL_LINK_STATUS);

       
        if (linked == 0) {
            System.err.println(glGetProgramInfoLog(program, glGetProgrami(program, GL_INFO_LOG_LENGTH)));

            throw new IllegalStateException("Shader failed to link");
        }

        this.programId = program;

        // Setup uniforms
        glUseProgram(program);

        this.timeUniform = glGetUniformLocation(program, "time");
        this.mouseUniform = glGetUniformLocation(program, "mouse");
        this.resolutionUniform = glGetUniformLocation(program, "resolution");
        this.texIn = glGetUniformLocation(program, "texIn");
        

        glUseProgram(0);
    }

    public void useShader(int width, int height, float mouseX, float mouseY, float time) {
        int textureId = Minecraft.getMinecraft().getFramebuffer().framebufferTexture;

        
        GL13.glActiveTexture(GL13.GL_TEXTURE0);

      
        
        GL11.glBindTexture(GL11.GL_TEXTURE_2D, textureId);

        GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_LINEAR);
        GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_LINEAR);
        
        glUseProgram(this.programId);

        //GL11.glViewport(0, 0, width*2, height*2);
        
        glUniform2f(this.resolutionUniform, width*2, height*2);
        glUniform2f(this.mouseUniform, mouseX / width, 1.0f - mouseY / height);
        glUniform1f(this.timeUniform, time);

        
        glUniform1i(texIn, 0);
    }
    private int createShader(InputStream inputStream, int shaderType) throws IOException {
        int shader = glCreateShader(shaderType);

        glShaderSource(shader, readStreamToString(inputStream));

        glCompileShader(shader);

        int compiled = glGetShaderi(shader, GL_COMPILE_STATUS);

        // If compilation failed
        if (compiled == 0) {
            System.out.println("cacaca");
            System.err.println(glGetShaderInfoLog(shader, glGetShaderi(shader, GL_INFO_LOG_LENGTH)));

            throw new IllegalStateException("Failed to compile shader");
        }

        return shader;
    }

    private String readStreamToString(InputStream inputStream) throws IOException {
        ByteArrayOutputStream out = new ByteArrayOutputStream();

        byte[] buffer = new byte[512];

        int read;

        while ((read = inputStream.read(buffer, 0, buffer.length)) != -1) {
            out.write(buffer, 0, read);
        }

        return new String(out.toByteArray(), StandardCharsets.UTF_8);
    }
    
}

我希望我展示了所有需要的信息，如果它是一个着色器问题告诉我，我会发布代码（我尽我所能，抱歉）。 🙏

在 MCP 上渲染模糊着色器但出现条纹