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voxel-engine
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hud: crosshair with fragment shader

hud
EmaMaker 2023-09-17 15:50:54 +02:00
parent 3f61a6a753
commit a6a419fdff
2 changed files with 21 additions and 0 deletions
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18
shaders/shader-quad.fs
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@ -4,7 +4,25 @@ in vec2 TexCoord;
out vec4 FragColor;
uniform sampler2D renderTex;
uniform int screenWidth;
uniform int screenHeight;
uniform int crosshairType;
void main(){
float crosshair_alpha = 0.8;
float dist = length(gl_FragCoord.xy-vec2(screenWidth/2, screenHeight/2));
FragColor = texture(renderTex, TexCoord);
/*float crosshair_color = (FragColor.x + FragColor.y + FragColor.z) / 3;
/*if(crosshair_color <= 0.5) crosshair_color = 1.0;
/*else crosshair_color = 0.0;*/
float crosshair_color = 1.0;
if(dist <= 7){
if( (crosshairType == 0 && dist >= 5) ||
(crosshairType == 1 && ( int(gl_FragCoord.x) == int(screenWidth / 2) ||
int(gl_FragCoord.y) == int(screenHeight / 2)) )
) FragColor = vec4(vec3(crosshair_color), crosshair_alpha);
}
}

3
src/renderer.cpp
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@ -217,6 +217,9 @@ namespace renderer{
glDisable(GL_DEPTH_TEST);
glBindTexture(GL_TEXTURE_2D, renderTex);
quadShader->use();
quadShader->setInt("screenWidth", screenWidth);
quadShader->setInt("screenHeight", screenHeight);
quadShader->setInt("crosshairType", 1);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
glBindVertexArray(0);
}