添加批量drawcall

Sandbox/assets/shaders/FlatColor.glsl

@@ -0,0 +1,26 @@
+// Flat Color Shader
+
+#type vertex
+#version 460 core
+
+layout(location = 0) in vec3 a_Position;
+layout(location = 1) in vec2 a_TexCoord;
+
+uniform mat4 u_ViewProjection;
+uniform mat4 u_Transform;
+
+
+void main() {
+    gl_Position = u_ViewProjection * u_Transform * vec4(a_Position, 1.0f);
+}
+
+#type fragment
+#version 460 core
+
+layout(location = 0) out vec4 color;
+
+uniform vec4 u_Color;
+
+void main() {
+        color = u_Color;
+}

Sandbox/assets/shaders/Texture.glsl

@@ -2,16 +2,23 @@
 #version 460 core
 
 layout(location = 0) in vec3 a_Position;
-layout(location = 1) in vec2 a_TexCoord;
+layout(location = 1) in vec4 a_Color;
+layout(location = 2) in vec2 a_TexCoord;
+layout(location = 3) in float a_TexIndex;
 
 uniform mat4 u_ViewProjection;
-uniform mat4 u_Transform;
+//uniform mat4 u_Transform;
 
 out vec2 v_TexCoord;
+out vec4 v_Color;
+out float v_TexIndex;
 
 void main() {
     v_TexCoord = a_TexCoord;
-    gl_Position = u_ViewProjection * u_Transform * vec4(a_Position, 1.0f);
+    v_Color = a_Color;
+    v_TexIndex = a_TexIndex;
+
+    gl_Position = u_ViewProjection * vec4(a_Position, 1.0f);
 }
 
 #type fragment
@@ -20,19 +27,15 @@ void main() {
 layout(location = 0) out vec4 color;
 
 in vec2 v_TexCoord;
+in vec4 v_Color;
+in float v_TexIndex;
 
-uniform sampler2D u_Texture;
+uniform float u_TilingFactor;
+uniform vec4 u_Color;
+uniform sampler2D u_Textures[32];
 
 void main() {
-    vec4 tmpColor = texture(u_Texture, v_TexCoord);
-    if(gl_FragCoord.x < 635){
-        color = tmpColor;
-    }
-    else{
-        if(tmpColor.a < 0.1){
-            discard;
-        }else{
-            color = vec4(v_TexCoord, 0.0f, 1.0f);
-        }
-    }
+
+    color = texture(u_Textures[int(v_TexIndex)], v_TexCoord * u_TilingFactor) * v_Color;
+//    color = v_Color;
 }