From d607fc8b853adb02827c10cef32d15f5f152a09d Mon Sep 17 00:00:00 2001
From: Andrei Karas <akaras@inbox.ru>
Date: Fri, 13 Jun 2014 13:19:19 +0300
Subject: In modernopengl add support for draw cached tile vertexes.

---
 src/render/modernopenglgraphics.cpp | 57 +++++++++++++++++++++++++++++++++++++
 src/test/testlauncher.cpp           | 11 ++++++-
 2 files changed, 67 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/render/modernopenglgraphics.cpp b/src/render/modernopenglgraphics.cpp
index f37e3336a..ea8447c33 100644
--- a/src/render/modernopenglgraphics.cpp
+++ b/src/render/modernopenglgraphics.cpp
@@ -698,10 +698,67 @@ void ModernOpenGLGraphics::calcTileVertexesInline(ImageVertexes *const vert,
                                                   const Image *const image,
                                                   int dstX, int dstY) const
 {
+    if (!vert || !image)
+        return;
+
+    const SDL_Rect &imageRect = image->mBounds;
+    const int srcX = imageRect.x;
+    const int srcY = imageRect.y;
+    const int w = imageRect.w;
+    const int h = imageRect.h;
+
+    if (w == 0 || h == 0)
+        return;
+
+    const float tw = static_cast<float>(image->mTexWidth);
+    const float th = static_cast<float>(image->mTexHeight);
+    const ClipRect &clipArea = mClipStack.top();
+    const int x2 = dstX + clipArea.xOffset;
+    const int y2 = dstY + clipArea.yOffset;
+
+    const unsigned int vLimit = mMaxVertices * 4;
+
+    OpenGLGraphicsVertexes &ogl = vert->ogl;
+
+    unsigned int vp = ogl.continueVp();
+
+    float texX1 = static_cast<float>(srcX) / tw;
+    float texY1 = static_cast<float>(srcY) / th;
+    float texX2 = static_cast<float>(srcX + w) / tw;
+    float texY2 = static_cast<float>(srcY + h) / th;
+
+    GLfloat *const floatArray = ogl.continueFloatTexArray();
+
+    vertFill2D(floatArray,
+        texX1, texY1, texX2, texY2,
+        x2, y2, w, h);
+
+    vp += 24;
+    if (vp >= vLimit)
+    {
+        ogl.switchFloatTexArray();
+        ogl.switchVp(vp);
+        vp = 0;
+    }
+
+    ogl.switchVp(vp);
 }
 
 void ModernOpenGLGraphics::drawTileVertexes(const ImageVertexes *const vert)
 {
+    if (!vert)
+        return;
+    const Image *const image = vert->image;
+
+    setColorAlpha(image->mAlpha);
+#ifdef DEBUG_BIND_TEXTURE
+    debugBindTexture(image);
+#endif
+    bindTexture(OpenGLImageHelper::mTextureType, image->mGLImage);
+    setTexturingAndBlending(true);
+    bindArrayBufferAndAttributes(mVbo);
+
+    drawVertexes(vert->ogl);
 }
 
 void ModernOpenGLGraphics::calcWindow(ImageCollection *const vertCol,
diff --git a/src/test/testlauncher.cpp b/src/test/testlauncher.cpp
index 86d2be370..d3bb5d571 100644
--- a/src/test/testlauncher.cpp
+++ b/src/test/testlauncher.cpp
@@ -370,10 +370,13 @@ int TestLauncher::testDye()
 
 int TestLauncher::testDraw()
 {
-    Image *img[2];
+    Image *img[3];
     img[0] = Theme::getImageFromTheme("graphics/sprites/arrow_left.png");
     img[1] = Theme::getImageFromTheme("graphics/sprites/arrow_right.png");
+    img[2] = Theme::getImageFromTheme("graphics/sprites/arrow_up.png");
     ImageCollection *const col = new ImageCollection;
+    ImageVertexes *const vert = new ImageVertexes;
+    vert->image = img[2];
 
     mainGraphics->pushClipArea(Rect(10, 20, 790, 580));
     mainGraphics->setColor(Color(0xFFU, 0xFFU, 0x00U, 0xFFU));
@@ -384,6 +387,10 @@ int TestLauncher::testDraw()
     mainGraphics->drawImage(img[0], 190, 383);
     img[0]->setAlpha(1.0f);
 
+    mainGraphics->calcTileVertexes(vert, img[2], 10, 10);
+    mainGraphics->calcTileVertexes(vert, img[2], 40, 10);
+    mainGraphics->finalize(vert);
+
     mainGraphics->setColor(Color(0x80U, 0x00U, 0xA0U, 0x90U));
     mainGraphics->fillRectangle(Rect(200, 100, 300, 300));
     mainGraphics->popClipArea();
@@ -398,6 +405,8 @@ int TestLauncher::testDraw()
     mainGraphics->calcPattern(col, img[1], 500, 400, 150, 100);
     mainGraphics->finalize(col);
 
+    mainGraphics->drawTileVertexes(vert);
+
     mainGraphics->drawRescaledImage(img[0], 250, 350, 35, 90);
 
     mainGraphics->setColor(Color(0x00U, 0xFFU, 0x00U, 0x90U));
-- 
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