From d6802c875619a65dc95ea86dcd973b270c2bf32f Mon Sep 17 00:00:00 2001
From: Cyberarm <matthewlikesrobots@gmail.com>
Date: Thu, 30 Jan 2020 22:54:59 -0600
Subject: [PATCH] Enabled wireframes for shader renderer

---
 lib/renderer/opengl_renderer.rb | 11 +++++++++++
 shaders/fragment/default.glsl   |  8 +++++++-
 shaders/vertex/default.glsl     |  3 +++
 3 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/lib/renderer/opengl_renderer.rb b/lib/renderer/opengl_renderer.rb
index ebef34d..c3f63da 100644
--- a/lib/renderer/opengl_renderer.rb
+++ b/lib/renderer/opengl_renderer.rb
@@ -67,6 +67,17 @@ class IMICFPS
         glEnableVertexAttribArray(4)
       end
 
+      if window.config.get(:debug_options, :wireframe)
+        glPolygonMode(GL_FRONT_AND_BACK, GL_LINE)
+        Shader.active_shader.uniform_boolean("disableLighting", true)
+
+        glDrawArrays(GL_TRIANGLES, 0, model.faces.count * 3)
+        window.number_of_vertices += model.faces.count * 3
+
+        Shader.active_shader.uniform_boolean("disableLighting", false)
+        glPolygonMode(GL_FRONT_AND_BACK, GL_FILL)
+      end
+
       glDrawArrays(GL_TRIANGLES, 0, model.faces.count * 3)
       window.number_of_vertices += model.faces.count * 3
 
diff --git a/shaders/fragment/default.glsl b/shaders/fragment/default.glsl
index 9c7d57f..2e14c32 100644
--- a/shaders/fragment/default.glsl
+++ b/shaders/fragment/default.glsl
@@ -12,6 +12,7 @@ in float outTotalLights;
 in vec3 outFragPos;
 in vec3 outCameraPos;
 in vec3 outInverseNormal;
+in float outDisableLighting;
 
 // optimizing compilers are annoying at this stage of my understanding of GLSL
 vec4 lokiVar;
@@ -76,7 +77,12 @@ void main() {
   lokiVar = vec4(outColor, 1.0) + outNormal + vec4(outUV, 1.0) + vec4(outTextureID, 1.0, 1.0, 1.0);
   lokiVar = normalize(lokiVar);
 
-  vec3 result = calculateLighting() * outColor;
+  vec3 result;
+  if (outDisableLighting == 1.0) {
+    result = outColor + 0.25;
+  } else {
+    result = calculateLighting() * outColor;
+  }
 
   gl_FragColor = vec4(result, 1.0);
 }
diff --git a/shaders/vertex/default.glsl b/shaders/vertex/default.glsl
index 9a5f188..a8287a3 100644
--- a/shaders/vertex/default.glsl
+++ b/shaders/vertex/default.glsl
@@ -20,6 +20,7 @@ out vec3 outFragPos;
 out vec3 outViewPos;
 out vec3 outCameraPos;
 out vec3 outInverseNormal;
+out float outDisableLighting;
 
 uniform mat4 projection;
 uniform mat4 view;
@@ -28,6 +29,7 @@ uniform int hasTexture;
 uniform float totalLights;
 uniform Light lights[MAX_LIGHTS];
 uniform vec3 cameraPos;
+uniform int disableLighting;
 
 
 void main() {
@@ -41,6 +43,7 @@ void main() {
   outLights = lights;
   outTotalLights = totalLights;
   outCameraPos = cameraPos;
+  outDisableLighting = disableLighting;
   outInverseNormal = mat3(transpose(inverse(model))) * vec3(inNormal);
 
   outFragPos = vec3(model * vec4(inPosition, 1.0));