From cca2e32c4abe70c0c16dbdeaef7e760a5ffa3ea8 Mon Sep 17 00:00:00 2001
From: chai <chaifix@163.com>
Date: Sat, 29 Dec 2018 23:27:16 +0800
Subject: *blend mode

---
 src/libjin/graphics/je_gl.cpp | 22 ++++++++++++++--------
 1 file changed, 14 insertions(+), 8 deletions(-)

(limited to 'src/libjin/graphics/je_gl.cpp')

diff --git a/src/libjin/graphics/je_gl.cpp b/src/libjin/graphics/je_gl.cpp
index d7a79d4..b0f113b 100644
--- a/src/libjin/graphics/je_gl.cpp
+++ b/src/libjin/graphics/je_gl.cpp
@@ -21,7 +21,6 @@ namespace JinEngine
         Canvas* const OpenGL::DEFAULT_CANVAS = new Canvas(0);
 
         OpenGL::OpenGL()
-            : mBlendMode(BlendMode::NONE)
         {
             memset(&mStats, 0, sizeof(mStats));
             memset(&mColor, 0xff, sizeof(mColor));
@@ -36,6 +35,17 @@ namespace JinEngine
         {
         }
 
+        void OpenGL::init()
+        {
+            enable(GL_BLEND);
+            enable(GL_TEXTURE_2D);
+            setClearColor(0, 0, 0, 0xff);
+            setColor(0xff, 0xff, 0xff, 0xff);
+            setBlendMode(OpenGL::BlendMode::ALPHA);
+            unbindCanvas();
+            unuseShader();
+        }
+
         void OpenGL::enable(GLenum cap)
         {
             glEnable(cap);
@@ -263,6 +273,7 @@ namespace JinEngine
             {
             case BlendMode::ADDITIVE:
                 srcRGB = GL_SRC_ALPHA;
+                srcA = GL_SRC_ALPHA;
                 dstRGB = GL_ONE;
                 dstA = GL_ONE;
                 break;
@@ -272,15 +283,10 @@ namespace JinEngine
                 break;
             case BlendMode::ALPHA:
             default:
-                /*srcRGB = GL_SRC_ALPHA;
-                srcA = GL_ONE; 
+                srcRGB = GL_SRC_ALPHA; // 0xff, 0xff, 0xff, 0渲染的问题，如果用GL_ONE，这些会保留下来
+                srcA = GL_SRC_ALPHA;
                 dstRGB = GL_ONE_MINUS_SRC_ALPHA;
                 dstA = GL_ONE_MINUS_SRC_ALPHA;
-*/
-                srcRGB = GL_ONE;
-                srcA = GL_ONE;
-                dstRGB = GL_ZERO;
-                dstA = GL_ZERO;
 
                 break;
             }
-- 
cgit v1.1-26-g67d0