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-rw-r--r--src/render/modernopenglgraphics.cpp75
1 files changed, 72 insertions, 3 deletions
diff --git a/src/render/modernopenglgraphics.cpp b/src/render/modernopenglgraphics.cpp
index 91b393ed9..3d4cf68a1 100644
--- a/src/render/modernopenglgraphics.cpp
+++ b/src/render/modernopenglgraphics.cpp
@@ -442,12 +442,12 @@ void ModernOpenGLGraphics::drawPatternInline(const Image *const image,
texX1, texY1, texX2, texY2,
dstX, dstY, width, height);
+ vp += 24;
if (vp >= vLimit)
{
drawTriangleArray(vp);
vp = 0;
}
- vp += 24;
}
}
if (vp > 0)
@@ -460,6 +460,74 @@ void ModernOpenGLGraphics::drawRescaledPattern(const Image *const image,
const int scaledWidth,
const int scaledHeight)
{
+ if (!image)
+ return;
+
+ if (scaledWidth == 0 || scaledHeight == 0)
+ return;
+
+ const SDL_Rect &imageRect = image->mBounds;
+ const int srcX = imageRect.x;
+ const int srcY = imageRect.y;
+ const int iw = imageRect.w;
+ const int ih = imageRect.h;
+ if (iw == 0 || ih == 0)
+ return;
+
+#ifdef DEBUG_BIND_TEXTURE
+ debugBindTexture(image);
+#endif
+ bindTexture(OpenGLImageHelper::mTextureType, image->mGLImage);
+
+ setTexturingAndBlending(true);
+ setColorAlpha(image->mAlpha);
+
+ unsigned int vp = 0;
+ const unsigned int vLimit = mMaxVertices * 4;
+
+ const float tw = static_cast<float>(image->mTexWidth);
+ const float th = static_cast<float>(image->mTexHeight);
+ const ClipRect &clipArea = mClipStack.top();
+ const int x2 = x + clipArea.xOffset;
+ const int y2 = y + clipArea.yOffset;
+
+ const float texX1 = static_cast<float>(srcX) / tw;
+ const float texY1 = static_cast<float>(srcY) / th;
+
+ const float tFractionW = iw / tw;
+ const float tFractionH = ih / th;
+
+ for (int py = 0; py < h; py += scaledHeight)
+ {
+ const int height = (py + scaledHeight >= h)
+ ? h - py : scaledHeight;
+ const int dstY = y2 + py;
+ const float visibleFractionH = static_cast<float>(height)
+ / scaledHeight;
+ const float texY2 = texY1 + tFractionH * visibleFractionH;
+ for (int px = 0; px < w; px += scaledWidth)
+ {
+ const int width = (px + scaledWidth >= w)
+ ? w - px : scaledWidth;
+ const int dstX = x2 + px;
+ const float visibleFractionW = static_cast<float>(width)
+ / scaledWidth;
+ const float texX2 = texX1 + tFractionW * visibleFractionW;
+
+ vertFill2D(mFloatArray,
+ texX1, texY1, texX2, texY2,
+ dstX, dstY, width, height);
+
+ vp += 24;
+ if (vp >= vLimit)
+ {
+ drawTriangleArray(vp);
+ vp = 0;
+ }
+ }
+ }
+ if (vp > 0)
+ drawTriangleArray(vp);
}
inline void ModernOpenGLGraphics::drawVertexes(const
@@ -888,11 +956,12 @@ void ModernOpenGLGraphics::clearScreen() const
void ModernOpenGLGraphics::drawTriangleArray(const int size)
{
- mglBufferData(GL_ARRAY_BUFFER, size, mFloatArray, GL_DYNAMIC_DRAW);
+ mglBufferData(GL_ARRAY_BUFFER, size * sizeof(GLfloat),
+ mFloatArray, GL_DYNAMIC_DRAW);
#ifdef DEBUG_DRAW_CALLS
mDrawCalls ++;
#endif
- glDrawArrays(GL_TRIANGLES, 0, size / 2);;
+ glDrawArrays(GL_TRIANGLES, 0, size / 4);
}
#ifdef DEBUG_BIND_TEXTURE