Opengl es Opengl es 2.0中的正交投影矩阵

==================================================================================

float pfIdentity[] =
{
    -1.0f,0.0f,0.0f,0.0f,
    0.0f,1.0f,0.0f,0.0f,
    0.0f,0.0f,1.0f,0.0f,
    0.0f,0.0f,0.0f,1.0f
};

    const char* pszVertShader = "\
    attribute highp vec4    myVertex;\
    uniform mediump mat4    myPMVMatrix;\
    invariant gl_Position;\
    void main(void)\
    {\
        gl_Position = myPMVMatrix * myVertex;\
}";

=====================================================================

float pfIdentity[] =
{
    -1.0f,0.0f,0.0f,0.0f,
    0.0f,1.0f,0.0f,0.0f,
    0.0f,0.0f,1.0f,0.0f,
    0.0f,0.0f,0.0f,1.0f
};

    const char* pszVertShader = "\
    attribute highp vec4    myVertex;\
    uniform mediump mat4    myPMVMatrix;\
    invariant gl_Position;\
    void main(void)\
    {\
        gl_Position = myPMVMatrix * myVertex;\
}";

for（int i=0；i<80000；++i）
{
glClear（GLU颜色缓冲位）；
int i32Location=glGetUniformLocation（uiProgramObject，“myPMVMatrix”）；
glUniformMatrix4fv（I32位置，1，GL_假，pfIdentity）；
GlenableVertexAttributeArray（顶点数组）；
glvertexattributepointer（顶点数组，3，GL\u浮点，GL\u假，0，0）；
gldrawArray（GL_三角形，0，i）；
EGLSWAPBuffer（EGL显示、EGL表面）；
}
返回0；
}

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p、 s：我正在用kronos头在Ubuntu10.10中制作opengl es，它是linux中opengl es 2.0的模拟器。

你根本没有投影。要将

myPMVMatrix

设置为统一的投影模型视图矩阵为

for(int i = 0; i < 80000; ++i)
{
    glClear(GL_COLOR_BUFFER_BIT);
    int i32Location = glGetUniformLocation(uiProgramObject, "myPMVMatrix");
    glUniformMatrix4fv( i32Location, 1, GL_FALSE, pfIdentity);
    glEnableVertexAttribArray(VERTEX_ARRAY);
    glVertexAttribPointer(VERTEX_ARRAY, 3, GL_FLOAT, GL_FALSE, 0, 0);
    glDrawArrays(GL_TRIANGLES, 0,i);
    eglSwapBuffers(eglDisplay, eglSurface);
}

return 0;
}

顺便说一句：制服的概念是，你不需要在每次原始迭代中设置它们

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无论如何，这是一个单位矩阵，由于它是唯一应用的变换，它将只通过顶点，就像它们通过碎片阶段一样。问题的解决方案是对其应用正交投影，即将该矩阵与正交投影矩阵相乘，然后使用该运算的结果

嗨，我做不到这一点，我不知道在哪里可以改变这件事，如果你能告诉我，这对我来说很容易走得更远。阅读它，理解它，使用您的新知识构建正交投影矩阵，并使用glUniformMatrix将其提供给着色器。