Unable to find uniform coordinates for GLSL shaders

Question

I am working on a shader shader and for some reason my program cannot find the same locations.

Vertex Shader Code:

#version 330

const int MAX_JOINTS = 30;
const int MAX_WEIGHTS = 3;

in vec3 position;
in vec2 textureCoords;
in vec3 normal;
in ivec3 boneIndices;
in vec3 weights;

out vec4 fragPos;
out vec3 n;
out vec2 texCoords;
out vec4 mcolor;


uniform mat4 modelMatrix;
uniform mat4 projectionMatrix;
uniform mat4 viewMatrix;
uniform mat4 normalMatrix;

uniform mat4[MAX_JOINTS] boneTransforms;


void main() {



vec4 totalLocalPos = vec4(0.0);
vec4 totalNormal = vec4(0.0);

for(int i = 0; i < 3; i++){
    mat4 boneTransform = boneTransforms[boneIndices[i]];
    vec4 posePosition = boneTransform * vec4(position, 1);
    totalLocalPos += posePosition * weights[i];

    vec4 worldNormal = boneTransform * vec4(normal, 1);
    totalNormal += worldNormal * weights[i];
}
texCoords = textureCoords;

fragPos = modelMatrix * vec4(position,1);

n = totalNormal.xyz;


gl_Position = projectionMatrix * viewMatrix * modelMatrix * totalLocalPos;
}

The unit of bone shape does not appear to be correct; if I request an active form with

GLint uniforms;
    glGetProgramiv(shaderProgramID, GL_ACTIVE_UNIFORMS, &uniforms);
    for (int i = 0; i < uniforms; i++){
        int name_len = -1, num = -1;
        GLenum type = GL_ZERO;
        char name[100];
        glGetActiveUniform(shaderProgramID, GLuint(i), sizeof(name) - 1,
            &name_len, &num, &type, name);
        name[name_len] = 0;

    }

i always gets zero; However, if I just set gl_Position = projectionMatrix * viewMatrix * modelMatrix * vec4 (position, 1), I get the expected result (correct rendering without any skins for the vertices), so the other transformations seem to work even though do they tell me they don't exist? EDIT: this is sometimes the case, sometimes I get the model at position (0,0,0), but otherwise it processes it correctly.

, / , boneTransforms totalLocalPos ​​ gl_Positions, .

vector<glm::mat4> boneTransforms = model.getBoneTransforms();
int location = glGetUniformLocation(shaderProgramID, "boneTransforms");
glUniformMatrix4fv(location, boneTransforms.size(), false, (GLfloat*)&boneTransforms);

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Answer 1

, : khronos , , GLSL, MVP ( proj-) PVM ( proj view) vec4 gl_Position , w 1, , , , .

:

gl_Position = projectionMatrix * viewMatrix * modelMatrix * totalLocalPos;

:

gl_Position = projectionMatrix * viewMatrix * modelMatrix * vec4(totalLocalPos.xyz, 1.0);

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