Added high-dpi / retina support to the no-game screen; additional minor tweaks and cleanup.

src/modules/graphics/opengl/GLBuffer.cpp

@@ -164,11 +164,9 @@ void GLBuffer::setMappedRangeModified(size_t offset, size_t modifiedsize)
 	// a and b are marked as modified.
 
 	size_t old_range_end = modified_offset + modified_size;
-
 	modified_offset = std::min(modified_offset, offset);
 
 	size_t new_range_end = std::max(offset + modifiedsize, old_range_end);
-
 	modified_size = new_range_end - modified_offset;
 }
 

src/modules/graphics/opengl/Graphics.cpp

@@ -708,7 +708,7 @@ Image *Graphics::newImage(const std::vector<love::image::CompressedImageData *>
 	return new Image(cdata, flags);
 }
 
-Quad *Graphics::newQuad(Quad::Viewport v, float sw, float sh)
+Quad *Graphics::newQuad(Quad::Viewport v, double sw, double sh)
 {
 	return new Quad(v, sw, sh);
 }

src/modules/graphics/opengl/Graphics.h

@@ -162,7 +162,7 @@ public:
 	Image *newImage(const std::vector<love::image::ImageData *> &data, const Image::Flags &flags);
 	Image *newImage(const std::vector<love::image::CompressedImageData *> &cdata, const Image::Flags &flags);
 
-	Quad *newQuad(Quad::Viewport v, float sw, float sh);
+	Quad *newQuad(Quad::Viewport v, double sw, double sh);
 
 	/**
 	 * Creates a Font object.

src/modules/graphics/opengl/wrap_Graphics.cpp

@@ -368,13 +368,13 @@ int w_newImage(lua_State *L)
 int w_newQuad(lua_State *L)
 {
 	Quad::Viewport v;
-	v.x = (float) luaL_checknumber(L, 1);
-	v.y = (float) luaL_checknumber(L, 2);
-	v.w = (float) luaL_checknumber(L, 3);
-	v.h = (float) luaL_checknumber(L, 4);
+	v.x = luaL_checknumber(L, 1);
+	v.y = luaL_checknumber(L, 2);
+	v.w = luaL_checknumber(L, 3);
+	v.h = luaL_checknumber(L, 4);
 
-	float sw = (float) luaL_checknumber(L, 5);
-	float sh = (float) luaL_checknumber(L, 6);
+	double sw = luaL_checknumber(L, 5);
+	double sh = luaL_checknumber(L, 6);
 
 	Quad *quad = instance()->newQuad(v, sw, sh);
 	luax_pushtype(L, GRAPHICS_QUAD_ID, quad);

src/modules/graphics/opengl/wrap_Graphics.lua

@@ -159,7 +159,7 @@ precision mediump float;
 #endif
 
 varying mediump vec4 VaryingTexCoord;
-varying lowp vec4 VaryingColor;
+varying mediump vec4 VaryingColor;
 
 #define love_Canvases gl_FragData
 
@@ -307,7 +307,7 @@ vec4 position(mat4 transform_proj, vec4 vertpos) {
 	return transform_proj * vertpos;
 }]],
 	pixel = [[
-vec4 effect(lowp vec4 vcolor, Image tex, vec2 texcoord, vec2 pixcoord) {
+vec4 effect(mediump vec4 vcolor, Image tex, vec2 texcoord, vec2 pixcoord) {
 	return Texel(tex, texcoord) * vcolor;
 }]]
 }