I only got first texture show up.
What’s wrong with this my code,I can’t find where’s the mistake even after two hours looking.
int main()
{
sf::ContextSettings settings;
settings.majorVersion = 4;
settings.minorVersion = 5;
settings.attributeFlags = settings.Core;
sf::Window window;
window.create(sf::VideoMode(1600, 900), "Texture Unit Rectangle", sf::Style::Close, settings);
window.setActive(true);
window.setVerticalSyncEnabled(true);
glewExperimental = true;
glewInit();
GLuint shaderProgram = createShaderProgram("FX/Rectangle.vss", "FX/Rectangle.fss");
float vertex[] =
{
-0.5f,0.5f,0.0f, 0.0f,0.0f,
-0.5f,-0.5f,0.0f, 0.0f,1.0f,
0.5f,0.5f,0.0f, 1.0f,0.0f,
0.5,-0.5f,0.0f, 1.0f,1.0f,
};
GLuint indices[] =
{
0,1,2,
1,2,3,
};
GLuint vao;
glGenVertexArrays(1, &vao);
glBindVertexArray(vao);
GLuint vbo;
glGenBuffers(1, &vbo);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertex), vertex, GL_STATIC_DRAW);
GLuint ebo;
glGenBuffers(1, &ebo);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ebo);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(indices), indices,GL_STATIC_DRAW);
glVertexAttribPointer(0, 3, GL_FLOAT, false, sizeof(float) * 5, (void*)0);
glEnableVertexAttribArray(0);
glVertexAttribPointer(1, 2, GL_FLOAT, false, sizeof(float) * 5, (void*)(sizeof(float) * 3));
glEnableVertexAttribArray(1);
GLuint texture[2];
glGenTextures(2, texture);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, texture[0]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
sf::Image* imageOne = new sf::Image;
bool isImageOneLoaded = imageOne->loadFromFile("Texture/container.jpg");
if (isImageOneLoaded)
{
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, imageOne->getSize().x, imageOne->getSize().y, 0, GL_RGBA, GL_UNSIGNED_BYTE, imageOne->getPixelsPtr());
glGenerateMipmap(GL_TEXTURE_2D);
}
delete imageOne;
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, texture[1]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
sf::Image* imageTwo = new sf::Image;
bool isImageTwoLoaded = imageTwo->loadFromFile("Texture/awesomeface.png");
if (isImageTwoLoaded)
{
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, imageTwo->getSize().x, imageTwo->getSize().y, 0, GL_RGBA, GL_UNSIGNED_BYTE, imageTwo->getPixelsPtr());
glGenerateMipmap(GL_TEXTURE_2D);
}
delete imageTwo;
glUniform1i(glGetUniformLocation(shaderProgram, "inTextureOne"), 0);
glUniform1i(glGetUniformLocation(shaderProgram, "inTextureTwo"), 1);
sf::Event event;
bool isRunning = true;
while (isRunning)
{
while (window.pollEvent(event))
{
if (event.type == event.Closed)
{
isRunning = false;
}
}
glClear(GL_COLOR_BUFFER_BIT);
if (isImageOneLoaded && isImageTwoLoaded)
{
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, texture[0]);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, texture[1]);
glUseProgram(shaderProgram);
}
glBindVertexArray(vao);
glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, nullptr);
glBindVertexArray(0);
window.display();
}
glDeleteVertexArrays(1, &vao);
glDeleteBuffers(1, &vbo);
glDeleteBuffers(1, &ebo);
glDeleteProgram(shaderProgram);
glDeleteTextures(2,texture);
return 0;
}
The Vertex Shader
#version 450 core
layout(location=0) in vec3 inPos;
layout(location=1) in vec2 inTexCoord;
out vec2 TexCoord;
void main()
{
gl_Position=vec4(inPos,1.0);
TexCoord=inTexCoord;
}
The fragment shader
#version 450 core
in vec2 TexCoord;
uniform sampler2D inTextureOne;
uniform sampler2D inTextureTwo;
out vec4 FragmentColor;
void main()
{
FragmentColor=mix(texture(inTextureOne,TexCoord),texture(inTextureTwo,TexCoord),0.2);
}
And this what i got [ATTACH=CONFIG]1659[/ATTACH]
I was expecting awesomeface.png on top of it.