glActiveTexture、glBindTexture、glUniform1i的绑定关系

最新推荐文章于 2023-01-18 17:37:01 发布

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最新推荐文章于 2023-01-18 17:37:01 发布

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分类专栏： OpenGL OpenCV学习记录

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在这里插入图片描述
下面两段代码的效果是一样的

	glActiveTexture(GL_TEXTURE0);
    glBindTexture(GL_TEXTURE_2D, textureID);
	glUseProgram(myTexturedIdentityShader);
    GLint iTextureUniform = glGetUniformLocation(myTexturedIdentityShader, "colorMap");
	glUniform1i(iTextureUniform, 0);

	glActiveTexture(GL_TEXTURE1);
    glBindTexture(GL_TEXTURE_2D, textureID);
	glUseProgram(myTexturedIdentityShader);
    GLint iTextureUniform = glGetUniformLocation(myTexturedIdentityShader, "colorMap");
	glUniform1i(iTextureUniform, 1);