Question

在一台计算机上编译此着色器而在另一台计算机上编译时，“纹理”功能会出错。着色器编译的OpenGL版本是3.1。另一台运行OpenGL 4.1的计算机虽然存在这些错误但不会编译它。

0(21) : error C1105: cannot call a non-function
0(58) : error C1105: cannot call a non-function

我们在线查看但未找到答案。文档说'texture2D'和'shadow2D'可以作为替换，但'shadow2D'给出一个错误，说它在glsl版本140之后被删除了，即使编译程序中的OpenGL上下文是3.1。我的理解是显卡向后兼容以前的glsl版本。

以下是问题着色器：

#version 140

in vec3 position;
in vec2 texCoord;
in vec3 normal;

out vec3 normalView_vs;
out vec3 normalShadow_vs;
out vec3 eyeView_vs;
out vec3 lightDirView_vs;
out vec2 texCoord_vs;
out vec4 shadowCoord_vs;

uniform mat4 worldMatrix;
uniform mat4 viewMatrix;
uniform mat4 modelProjectionMatrix;
uniform mat4 depthModelProjectionMatrix;
uniform vec3 sunDirection;

const mat4 biasMatrix = mat4(0.5f, 0.0f, 0.0f, 0.0f,
                             0.0f, 0.5f, 0.0f, 0.0f,
                             0.0f, 0.0f, 0.5f, 0.0f,
                             0.5f, 0.5f, 0.5f, 1.0f);

void main(void)
{
    eyeView_vs = -(viewMatrix * worldMatrix * vec4(position, 1.0f)).xyz;

    lightDirView_vs = (viewMatrix*vec4(sunDirection, 0.0f)).xyz;

    normalShadow_vs = (depthModelProjectionMatrix * vec4(normal, 0.0f)).xyz;
    normalView_vs = (viewMatrix * worldMatrix * vec4(normal, 0.0f)).xyz;
    // Note: Only correct if worldMatrix does not scale the model ! Use its inverse transpose if not.

    gl_Position = modelProjectionMatrix * vec4(position, 1.0f);
    texCoord_vs = texCoord;
    shadowCoord_vs = biasMatrix * depthModelProjectionMatrix * vec4(position, 1.0f);
}

GLSL着色器在较旧的计算机上编译但不是另一台计算机

0 个答案: