From de02bcf19f772e68e156632e3642dc53fdd4a6b1 Mon Sep 17 00:00:00 2001
From: Hajime Hoshi <hajimehoshi@gmail.com>
Date: Sun, 12 Apr 2020 13:32:08 +0900
Subject: [PATCH] monogame: Update

Updates #1078
---
 internal/graphicsdriver/monogame/graphics.go | 4 ++++
 internal/graphicsdriver/monogame/image.go    | 6 +++++-
 internal/monogame/monogame.go                | 8 ++++++--
 3 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/internal/graphicsdriver/monogame/graphics.go b/internal/graphicsdriver/monogame/graphics.go
index f5f4c5fb2..f51cf5c08 100644
--- a/internal/graphicsdriver/monogame/graphics.go
+++ b/internal/graphicsdriver/monogame/graphics.go
@@ -129,3 +129,7 @@ func (s *screen) ReplacePixels(args []*driver.ReplacePixelsArgs) {
 func (s *screen) Dispose() {
 	// Do nothing?
 }
+
+func (s *screen) IsScreen() bool {
+	return true
+}
diff --git a/internal/graphicsdriver/monogame/image.go b/internal/graphicsdriver/monogame/image.go
index 2356ce288..cab5530df 100644
--- a/internal/graphicsdriver/monogame/image.go
+++ b/internal/graphicsdriver/monogame/image.go
@@ -26,6 +26,7 @@ type RenderTarget2D interface {
 	SetAsSource()
 	ReplacePixels(args []*driver.ReplacePixelsArgs)
 	Dispose()
+	IsScreen() bool
 }
 
 type Image struct {
@@ -49,7 +50,10 @@ func (*Image) Pixels() ([]byte, error) {
 }
 
 func (i *Image) SetAsDestination() {
-	w, h := graphics.InternalImageSize(i.width), graphics.InternalImageSize(i.height)
+	w, h := i.width, i.height
+	if !i.v.IsScreen() {
+		w, h = graphics.InternalImageSize(w), graphics.InternalImageSize(h)
+	}
 	i.v.SetAsDestination(w, h)
 }
 
diff --git a/internal/monogame/monogame.go b/internal/monogame/monogame.go
index b88d99ffd..8efeb3df2 100644
--- a/internal/monogame/monogame.go
+++ b/internal/monogame/monogame.go
@@ -106,8 +106,8 @@ func (g *Game) SetVertices(vertices []float32, indices []uint16) {
 }
 
 func (g *Game) Draw(indexLen int, indexOffset int, mode driver.CompositeMode, colorM *affine.ColorM, filter driver.Filter, address driver.Address) {
-	// TODO: Implement this
-	g.binding.Call("Draw", indexLen, indexOffset)
+	src, dst := mode.Operations()
+	g.binding.Call("Draw", indexLen, indexOffset, int(src), int(dst))
 }
 
 func (g *Game) ResetDestination(viewportWidth, viewportHeight int) {
@@ -139,3 +139,7 @@ func (r *RenderTarget2D) SetAsDestination(viewportWidth, viewportHeight int) {
 func (r *RenderTarget2D) SetAsSource() {
 	r.binding.Call("SetSource", r.v)
 }
+
+func (r *RenderTarget2D) IsScreen() bool {
+	return false
+}