SH-2768 Put transparency checkerboard back in texture preview

3 files changed, 34 insertions, 22 deletions

diff --git a/indra/llui/llui.cpp b/indra/llui/llui.cpp
index 6b74c5a6be..a38d0a0b0b 100644
--- a/indra/llui/llui.cpp
+++ b/indra/llui/llui.cpp
@@ -972,43 +972,53 @@ void gl_ring( F32 radius, F32 width, const LLColor4& center_color, const LLColor
 // Draw gray and white checkerboard with black border
 void gl_rect_2d_checkerboard(const LLRect& rect, GLfloat alpha)
 {
-	// Initialize the first time this is called.
-	const S32 PIXELS = 32;
-	static GLubyte checkerboard[PIXELS * PIXELS];
-	static BOOL first = TRUE;
-	if( first )
-	{
-		for( S32 i = 0; i < PIXELS; i++ )
+	if (!LLGLSLShader::sNoFixedFunction)
+	{ 
+		// Initialize the first time this is called.
+		const S32 PIXELS = 32;
+		static GLubyte checkerboard[PIXELS * PIXELS];
+		static BOOL first = TRUE;
+		if( first )
 		{
-			for( S32 j = 0; j < PIXELS; j++ )
+			for( S32 i = 0; i < PIXELS; i++ )
 			{
-				checkerboard[i * PIXELS + j] = ((i & 1) ^ (j & 1)) * 0xFF;
+				for( S32 j = 0; j < PIXELS; j++ )
+				{
+					checkerboard[i * PIXELS + j] = ((i & 1) ^ (j & 1)) * 0xFF;
+				}
 			}
+			first = FALSE;
 		}
-		first = FALSE;
-	}
 	
-	gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
+		gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
 
-	// ...white squares
-	gGL.color4f( 1.f, 1.f, 1.f, alpha );
-	gl_rect_2d(rect);
+		// ...white squares
+		gGL.color4f( 1.f, 1.f, 1.f, alpha );
+		gl_rect_2d(rect);
 
-	// ...gray squares
-	gGL.color4f( .7f, .7f, .7f, alpha );
-	gGL.flush();
+		// ...gray squares
+		gGL.color4f( .7f, .7f, .7f, alpha );
+		gGL.flush();
 
-	if (!LLGLSLShader::sNoFixedFunction)
-	{ //polygon stipple is deprecated
 		glPolygonStipple( checkerboard );
 
 		LLGLEnable polygon_stipple(GL_POLYGON_STIPPLE);
 		gl_rect_2d(rect);
 	}
 	else
-	{
-		gl_rect_2d(rect);
+	{ //polygon stipple is deprecated, use "Checker" texture
+		LLPointer<LLUIImage> img = LLUI::getUIImage("Checker");
+		gGL.getTexUnit(0)->bind(img->getImage());
+		gGL.getTexUnit(0)->setTextureAddressMode(LLTexUnit::TAM_WRAP);
+		gGL.getTexUnit(0)->setTextureFilteringOption(LLTexUnit::TFO_POINT);
+
+		LLColor4 color(1.f, 1.f, 1.f, alpha);
+		LLRectf uv_rect(0, 0, rect.getWidth()/32.f, rect.getHeight()/32.f);
+
+		gl_draw_scaled_image(rect.mLeft, rect.mBottom, rect.getWidth(), rect.getHeight(),
+			img->getImage(), color, uv_rect);
 	}
+	
 	gGL.flush();
 }
 
diff --git a/indra/newview/skins/default/textures/checker.png b/indra/newview/skins/default/textures/checker.png
new file mode 100644
index 0000000000..1ab87e3f02
--- /dev/null
+++ b/indra/newview/skins/default/textures/checker.png
diff --git a/indra/newview/skins/default/textures/textures.xml b/indra/newview/skins/default/textures/textures.xml
index 8702ebde2a..c4d39e56ba 100644
--- a/indra/newview/skins/default/textures/textures.xml
+++ b/indra/newview/skins/default/textures/textures.xml
@@ -122,6 +122,8 @@ with the same filename but different name
   <texture name="Checkbox_Press" file_name="widgets/Checkbox_Press.png" preload="true" />
   <texture name="Check_Mark" file_name="icons/check_mark.png" preload="true" />
 
+  <texture name="Checker" file_name="checker.png" preload="false" />
+  
   <texture name="Command_AboutLand_Icon"    file_name="toolbar_icons/land.png"         preload="true" />
   <texture name="Command_Appearance_Icon"   file_name="toolbar_icons/appearance.png"   preload="true" />
   <texture name="Command_Avatar_Icon"       file_name="toolbar_icons/avatars.png"      preload="true" />