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我一直在難以紋理我製作的飛機。平面上的第一個四邊形紋理正確，但平面的其餘部分似乎只使用紋理的第一個像素，所以最終都以純色爲單位。如果我製造一架巨型飛機，並且只是製造質感，它似乎能夠正常工作，但是當我試圖將飛機分割成幾部分時，我一直都會遇到這個問題。我假設我錯過了座標去的東西，但從我的理解中我認爲他們總是應該在0到1之間？任何幫助表示讚賞。現代OpenGL問題紋理平面
[！[在這裏輸入的形象描述] [1] [1]
紋理座標
GLfloat grassTexCoords[]
{
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 0.0f,
1.0f, 0.0f,
0.0f, 1.0f,
1.0f, 1.0f
};
設置VAO
GLuint makePlane()
{
float size = 5;
for (int i = -5; i < 5; ++i)
{
for (int j = -5; j < 5; ++j)
{
verts.push_back({ glm::vec3((i * size), -11.f, (j * size)) });
verts.push_back({ glm::vec3((i * size), -11.f, (j * size) + size) });
verts.push_back({ glm::vec3((i * size) + size, -11.f, (j * size)) });
verts.push_back({ glm::vec3((i * size) + size, -11.f, (j * size)) });
verts.push_back({ glm::vec3((i * size), -11.f, (j * size) + size) });
verts.push_back({ glm::vec3((i * size) + size, -11.f, (j * size) + size) });
}
}
GLuint vbo;
glGenBuffers(1, &vbo);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
glBufferData(GL_ARRAY_BUFFER, verts.size() * sizeof(VertexPos), verts.data(), GL_STATIC_DRAW);
GLuint vboTex;
glGenBuffers(1, &vboTex);
glBindBuffer(GL_ARRAY_BUFFER, vboTex);
glBufferData(GL_ARRAY_BUFFER, 2 * 6 * sizeof(GLfloat), &grassTexCoords, GL_STATIC_DRAW);
GLuint vao;
glGenVertexArrays(1, &vao);
glBindVertexArray(vao);
glEnableVertexAttribArray(0);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, NULL);
glEnableVertexAttribArray(1);
glBindBuffer(GL_ARRAY_BUFFER, vboTex);
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 0, NULL);
return vao;
}
渲染
void render()
{
glViewport(0, 0, window.getSize().x, window.getSize().y);
glClearColor(.4f, .4f, .4f, 1.f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
//1st program
glUseProgram(sphereProgram);
glEnable(GL_CULL_FACE);
glEnable(GL_DEPTH_TEST);
glBindVertexArray(vao);
glDrawArrays(GL_TRIANGLES, 0, objPointCount);
//2nd program
glFrontFace(GL_CCW);
glDepthMask(GL_FALSE);
glUseProgram(cubeProgram);
glBindTexture(GL_TEXTURE_CUBE_MAP, textureID);
glBindVertexArray(cubeVao);
glDrawArrays(GL_TRIANGLES, 0, 36);
glDepthMask(GL_TRUE);
//3rd program
glFrontFace(GL_CCW);
glDisable(GL_CULL_FACE);
glEnable(GL_TEXTURE_2D);
sf::Texture::bind(&grassTex);
glUseProgram(planeProgram);
glBindVertexArray(planeVao);
glDrawArrays(GL_TRIANGLES, 0, verts.size());
//-----------------------
window.display();
//window.setFramerateLimit(FPS);
window.setVerticalSyncEnabled(true);
}
頂點着色器
#version 410
layout (location = 0) in vec3 vertexPos;
layout (location = 1) in vec2 texCoords;
uniform mat4 view, proj;
out vec3 posEye;
out vec2 coords;
void main()
{
coords = texCoords; //repeat texture over plane
gl_Position = proj * view * vec4(vertexPos, 1.0);
posEye = (view * vec4(vertexPos, 1.0)).xyz;
}
片段着色器
#version 410
in vec3 posEye;
in vec2 coords;
out vec4 fragColor;
uniform sampler2D tex;
//fog
const vec3 fogColor = vec3(0.2, 0.2, 0.2);
const float minFogRad = 300;
const float maxFogRad = 900;
void main()
{
vec4 texture = texture2D(tex, coords);
fragColor = texture;
float distance = length(-posEye);
float fogFactor = (distance - minFogRad)/(maxFogRad - minFogRad);
fogFactor = clamp(fogFactor, 0.0, 1.0);
fragColor.rgb = mix(fragColor.rgb, fogColor, fogFactor);
}
它看起來像你試圖張貼圖像附件。你能再試一次嗎？這可能會幫助其他人更容易回答問題。 –