Fixed an issue with Streaming Vertex data overflowing it's buffer.

Bug=angle:689 Change-Id: Ia0ee6f951822901560888ea300a3889601fa1d89 Reviewed-on: https://chromium-review.googlesource.com/207010Reviewed-by: Shannon Woods <shannonwoods@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org> Tested-by: Brandon Jones <bajones@chromium.org>

Fixed an issue with Streaming Vertex data overflowing it's buffer.
b23375fe · Brandon Jones · aa7e1660 · b23375fe
Commit b23375fe authored Jul 08, 2014 by Brandon Jones
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Showing with 23 additions and 26 deletions

VertexDataManager.cpp src/libGLESv2/renderer/d3d/VertexDataManager.cpp +23 -26

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--- a/src/libGLESv2/renderer/d3d/VertexDataManager.cpp
+++ b/src/libGLESv2/renderer/d3d/VertexDataManager.cpp
@@ -124,40 +124,37 @@ GLenum VertexDataManager::prepareVertexData(const gl::VertexAttribute attribs[],
        if (translated[i].active && attribs[i].enabled)
        {
            gl::Buffer *buffer = attribs[i].buffer.get();
-            if (buffer)
+            BufferD3D *bufferImpl = buffer ? BufferD3D::makeBufferD3D(buffer->getImplementation()) : NULL;
-            {
+            StaticVertexBufferInterface *staticBuffer = bufferImpl ? bufferImpl->getStaticVertexBuffer() : NULL;
-                BufferD3D *bufferImpl = BufferD3D::makeBufferD3D(buffer->getImplementation());
+            VertexBufferInterface *vertexBuffer = staticBuffer ? staticBuffer : static_cast<VertexBufferInterface*>(mStreamingBuffer);
-                StaticVertexBufferInterface *staticBuffer = bufferImpl->getStaticVertexBuffer();
-                VertexBufferInterface *vertexBuffer = staticBuffer ? staticBuffer : static_cast<VertexBufferInterface*>(mStreamingBuffer);
-                if (!vertexBuffer->directStoragePossible(attribs[i], currentValues[i]))
+            if (!vertexBuffer->directStoragePossible(attribs[i], currentValues[i]))
+            {
+                if (staticBuffer)
                {
-                    if (staticBuffer)
+                    if (staticBuffer->getBufferSize() == 0)
                    {
-                        if (staticBuffer->getBufferSize() == 0)
+                        int totalCount = ElementsInBuffer(attribs[i], bufferImpl->getSize());
+                        if (!staticBuffer->reserveVertexSpace(attribs[i], totalCount, 0))
                        {
-                            int totalCount = ElementsInBuffer(attribs[i], bufferImpl->getSize());
+                            return GL_OUT_OF_MEMORY;
-                            if (!staticBuffer->reserveVertexSpace(attribs[i], totalCount, 0))
-                            {
-                                return GL_OUT_OF_MEMORY;
-                            }
                        }
                    }
-                    else
+                }
-                    {
+                else
-                        int totalCount = StreamingBufferElementCount(attribs[i], count, instances);
+                {
+                    int totalCount = StreamingBufferElementCount(attribs[i], count, instances);
-                        // [OpenGL ES 3.0.2] section 2.9.4 page 40:
+                    // [OpenGL ES 3.0.2] section 2.9.4 page 40:
-                        // We can return INVALID_OPERATION if our vertex attribute does not have enough backing data.
+                    // We can return INVALID_OPERATION if our vertex attribute does not have enough backing data.
-                        if (bufferImpl && ElementsInBuffer(attribs[i], bufferImpl->getSize()) < totalCount)
+                    if (bufferImpl && ElementsInBuffer(attribs[i], bufferImpl->getSize()) < totalCount)
-                        {
+                    {
-                            return GL_INVALID_OPERATION;
+                        return GL_INVALID_OPERATION;
-                        }
+                    }
-                        if (!mStreamingBuffer->reserveVertexSpace(attribs[i], totalCount, instances))
+                    if (!mStreamingBuffer->reserveVertexSpace(attribs[i], totalCount, instances))
-                        {
+                    {
-                            return GL_OUT_OF_MEMORY;
+                        return GL_OUT_OF_MEMORY;
-                        }
                    }
                }
            }