将uint传递给着色器会更改其值(Passing a uint to shader changes its value)

 我试图将一个uint传递给我的着色器，但我必须做错了，因为在着色器中值为3212836864而不是4294967295。 
 
 我有一个Vertex数组，我存储每个顶点，然后使用glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(Vertex) * 4 * vertexBufferArrayInserts, vertexBufferArray);将它们发送到着色器glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(Vertex) * 4 * vertexBufferArrayInserts, vertexBufferArray); 
 
 这些是我的glVertexAttribPointer调用： 
 
    shaderPosAttrib = glGetAttribLocation(shaderProgram, "position");
    glVertexAttribPointer(shaderPosAttrib, 2, GL_FLOAT, GL_FALSE, sizeof(Vertex), (void*)offsetof(Vertex, position));
    glEnableVertexAttribArray(shaderPosAttrib);

    shaderTexCoordAttrib = glGetAttribLocation(shaderProgram, "texCoord");
    glVertexAttribPointer(shaderTexCoordAttrib, 2, GL_FLOAT, GL_FALSE, sizeof(Vertex), (void*)offsetof(Vertex, texCoords));
    glEnableVertexAttribArray(shaderTexCoordAttrib);

    shaderColorAttrib = glGetAttribLocation(shaderProgram, "color");
    glVertexAttribPointer(shaderColorAttrib, 1, GL_UNSIGNED_INT, GL_FALSE, sizeof(Vertex), (void*)offsetof(Vertex, color));
    glEnableVertexAttribArray(shaderColorAttrib);
 
 这是Vertex结构 
 
struct Vertex
{
    Vector2<GLfloat> position;
    Vector2<GLfloat> texCoords;
    GLuint color;

    Vertex() {

    }

    Vertex(Vector2<GLfloat> position, Vector2<GLfloat> texCoords, GLuint color) {
        this->position = position;
        this->texCoords = texCoords;
        this->color = color;
    }
};
 
 顶点着色器： 
 
#version 150

in vec2 position;
in vec2 texCoord;
in uint color;

out vec2 TexCoord;
out uint Color;

uniform mat4 projMat;

void main()
{
    TexCoord = texCoord;
    Color = color;
    gl_Position =  projMat * vec4(position, 0.0, 1.0);
}
 
 片段着色器： 
 
#version 150

in vec2 TexCoord;
in uint Color;

out vec4 outColor;

uniform sampler2D tex;

void main()
{
    float colorr = 0;

    if(Color == 3212836864)
        colorr = 1;

    outColor = texture(tex, TexCoord) * vec4(colorr, colorr, colorr, 1.0);
}
 
 显然我在某处做错了但我却看不到它...非常感谢帮助！ 

I'm trying to pass a uint to my shader but I must be doing something wrong because in the shader the value is 3212836864 and not 4294967295.
 
I have a Vertex array that I store each vertex in before sending them to the shader using glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(Vertex) * 4 * vertexBufferArrayInserts, vertexBufferArray);
 
These are my glVertexAttribPointer calls:
 
    shaderPosAttrib = glGetAttribLocation(shaderProgram, "position");
    glVertexAttribPointer(shaderPosAttrib, 2, GL_FLOAT, GL_FALSE, sizeof(Vertex), (void*)offsetof(Vertex, position));
    glEnableVertexAttribArray(shaderPosAttrib);

    shaderTexCoordAttrib = glGetAttribLocation(shaderProgram, "texCoord");
    glVertexAttribPointer(shaderTexCoordAttrib, 2, GL_FLOAT, GL_FALSE, sizeof(Vertex), (void*)offsetof(Vertex, texCoords));
    glEnableVertexAttribArray(shaderTexCoordAttrib);

    shaderColorAttrib = glGetAttribLocation(shaderProgram, "color");
    glVertexAttribPointer(shaderColorAttrib, 1, GL_UNSIGNED_INT, GL_FALSE, sizeof(Vertex), (void*)offsetof(Vertex, color));
    glEnableVertexAttribArray(shaderColorAttrib);
 
And this is the Vertex struct
 
struct Vertex
{
    Vector2<GLfloat> position;
    Vector2<GLfloat> texCoords;
    GLuint color;

    Vertex() {

    }

    Vertex(Vector2<GLfloat> position, Vector2<GLfloat> texCoords, GLuint color) {
        this->position = position;
        this->texCoords = texCoords;
        this->color = color;
    }
};
 
Vertex shader:
 
#version 150

in vec2 position;
in vec2 texCoord;
in uint color;

out vec2 TexCoord;
out uint Color;

uniform mat4 projMat;

void main()
{
    TexCoord = texCoord;
    Color = color;
    gl_Position =  projMat * vec4(position, 0.0, 1.0);
}
 
Fragment shader:
 
#version 150

in vec2 TexCoord;
in uint Color;

out vec4 outColor;

uniform sampler2D tex;

void main()
{
    float colorr = 0;

    if(Color == 3212836864)
        colorr = 1;

    outColor = texture(tex, TexCoord) * vec4(colorr, colorr, colorr, 1.0);
}
 
Obviously I'm doing something wrong somewhere but I just can't see it... Help is very much appreciated!

原文：https://stackoverflow.com/questions/17260493