From 62645cde28eff7761ea81da32ec36da9ee22378f Mon Sep 17 00:00:00 2001
From: bjorn <tie.372@gmail.com>
Date: Mon, 24 Dec 2018 19:19:08 -0800
Subject: [PATCH] Pipeline -> 4 bytes; lineWidth -> uint8_t;

---
 src/api/graphics.c      |  2 +-
 src/graphics/graphics.c |  3 ++-
 src/graphics/graphics.h | 24 ++++++++++++------------
 src/graphics/opengl.c   |  2 +-
 4 files changed, 16 insertions(+), 15 deletions(-)

diff --git a/src/api/graphics.c b/src/api/graphics.c
index 39f75b92..7c9ced50 100644
--- a/src/api/graphics.c
+++ b/src/api/graphics.c
@@ -526,7 +526,7 @@ static int l_lovrGraphicsGetLineWidth(lua_State* L) {
 }
 
 static int l_lovrGraphicsSetLineWidth(lua_State* L) {
-  float width = luaL_optnumber(L, 1, 1.f);
+  uint8_t width = (uint8_t) luaL_optinteger(L, 1, 1);
   lovrGraphicsSetLineWidth(width);
   return 0;
 }
diff --git a/src/graphics/graphics.c b/src/graphics/graphics.c
index 401fae38..599b3740 100644
--- a/src/graphics/graphics.c
+++ b/src/graphics/graphics.c
@@ -297,7 +297,8 @@ float lovrGraphicsGetLineWidth() {
   return state.pipeline->lineWidth;
 }
 
-void lovrGraphicsSetLineWidth(float width) {
+void lovrGraphicsSetLineWidth(uint8_t width) {
+  lovrAssert(width > 0 && width <= 255, "Line width must be between 0 and 255");
   state.pipeline->lineWidth = width;
 }
 
diff --git a/src/graphics/graphics.h b/src/graphics/graphics.h
index 504d3bd4..93000432 100644
--- a/src/graphics/graphics.h
+++ b/src/graphics/graphics.h
@@ -100,17 +100,17 @@ typedef struct {
 } Camera;
 
 typedef struct {
-  bool alphaSampling;
-  BlendMode blendMode;
-  BlendAlphaMode blendAlphaMode;
-  bool culling;
-  CompareMode depthTest;
-  bool depthWrite;
-  float lineWidth;
-  CompareMode stencilMode;
-  int stencilValue;
-  Winding winding;
-  bool wireframe;
+  BlendMode blendMode : 3;
+  BlendAlphaMode blendAlphaMode : 1;
+  CompareMode depthTest : 3;
+  bool depthWrite : 1;
+  uint8_t lineWidth : 8;
+  uint8_t stencilValue: 8;
+  CompareMode stencilMode : 3;
+  bool alphaSampling : 1;
+  bool culling : 1;
+  Winding winding : 1;
+  bool wireframe : 1;
 } Pipeline;
 
 typedef struct {
@@ -198,7 +198,7 @@ Font* lovrGraphicsGetFont();
 void lovrGraphicsSetFont(Font* font);
 bool lovrGraphicsIsGammaCorrect();
 float lovrGraphicsGetLineWidth();
-void lovrGraphicsSetLineWidth(float width);
+void lovrGraphicsSetLineWidth(uint8_t width);
 float lovrGraphicsGetPointSize();
 void lovrGraphicsSetPointSize(float size);
 Shader* lovrGraphicsGetShader();
diff --git a/src/graphics/opengl.c b/src/graphics/opengl.c
index 20a0115b..0a9b805c 100644
--- a/src/graphics/opengl.c
+++ b/src/graphics/opengl.c
@@ -47,7 +47,7 @@ static struct {
   bool depthEnabled;
   CompareMode depthTest;
   bool depthWrite;
-  float lineWidth;
+  uint8_t lineWidth;
   bool stencilEnabled;
   CompareMode stencilMode;
   int stencilValue;