gl: draw screen flashes

[d2df-sdl.git] / src / game / renders / opengl / r_draw.pas

diff --git a/src/game/renders/opengl/r_draw.pas b/src/game/renders/opengl/r_draw.pas
index 07d805cf45b928df653a611b675c963197dcd1d2..c2bfc245726f040e249c9455835317666c7726a3 100644 (file)
--- a/src/game/renders/opengl/r_draw.pas
+++ b/src/game/renders/opengl/r_draw.pas
@@ -30,6 +30,8 @@ interface
   procedure r_Draw_MultiTextureRepeatRotate (m: TGLMultiTexture; const anim: TAnimState; x, y, w, h: Integer; flip: Boolean; r, g, b, a: Byte; blend: Boolean; rx, ry, angle: Integer);
 
   procedure r_Draw_Filter (l, t, r, b: Integer; rr, gg, bb, aa: Byte);
+  procedure r_Draw_FillRect (l, t, r, b: Integer; rr, gg, bb, aa: Byte);
+  procedure r_Draw_InvertRect (l, t, r, b: Integer; rr, gg, bb, aa: Byte);
 
 implementation
 
@@ -221,4 +223,36 @@ implementation
     glEnd;
   end;
 
+  procedure r_Draw_FillRect (l, t, r, b: Integer; rr, gg, bb, aa: Byte);
+  begin
+    ASSERT(r >= l);
+    ASSERT(b >= t);
+    glEnable(GL_BLEND);
+    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+    glDisable(GL_TEXTURE_2D);
+    glColor4ub(rr, gg, bb, aa);
+    glBegin(GL_QUADS);
+      glVertex2i(l, t);
+      glVertex2i(r, t);
+      glVertex2i(r, b);
+      glVertex2i(l, b);
+    glEnd;
+  end;
+
+  procedure r_Draw_InvertRect (l, t, r, b: Integer; rr, gg, bb, aa: Byte);
+  begin
+    ASSERT(r >= l);
+    ASSERT(b >= t);
+    glEnable(GL_BLEND);
+    glBlendFunc(GL_ONE_MINUS_DST_COLOR, GL_ZERO);
+    glDisable(GL_TEXTURE_2D);
+    glColor4ub(rr, gg, bb, aa);
+    glBegin(GL_QUADS);
+      glVertex2i(l, t);
+      glVertex2i(r, t);
+      glVertex2i(r, b);
+      glVertex2i(l, b);
+    glEnd;
+  end;
+
 end.