From fa8e18c3860d8c43795152da1d4c38dc1471f320 Mon Sep 17 00:00:00 2001
From: Damir Tatalovic <dtatalovic@mips.com>
Date: Fri, 2 Mar 2012 17:43:52 +0100
Subject: MIPS DSP configure detection and initial blend optimizations.

Adds new MIPS configure test and -no-mips_dsp and -no-mips_dspr2
configure options.

List of optimized implementations:

- comp_func_SourceOver
- comp_func_Source
- qt_memfill32
- qt_destFetchARGB32
- qt_destStoreARGB32
- blend [RGB32][RGB32]
- blend [ARGB32_Pre][RGB32]
- blend [RGB32][ARGB32_Pre]
- blend [ARGB32_Pre][ARGB32_Pre]

Change-Id: I35411858295b7b3f4895eb56e3b93397528903cc
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
---
 src/gui/painting/qdrawhelper_mips_dsp.cpp | 176 ++++++++++++++++++++++++++++++
 1 file changed, 176 insertions(+)
 create mode 100644 src/gui/painting/qdrawhelper_mips_dsp.cpp

(limited to 'src/gui/painting/qdrawhelper_mips_dsp.cpp')

diff --git a/src/gui/painting/qdrawhelper_mips_dsp.cpp b/src/gui/painting/qdrawhelper_mips_dsp.cpp
new file mode 100644
index 0000000000..9b104eb5c9
--- /dev/null
+++ b/src/gui/painting/qdrawhelper_mips_dsp.cpp
@@ -0,0 +1,176 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 MIPS Technologies, www.mips.com, author Damir Tatalovic <dtatalovic@mips.com>
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <private/qdrawhelper_p.h>
+#include <private/qdrawhelper_mips_dsp_p.h>
+#include <private/qpaintengine_raster_p.h>
+
+QT_BEGIN_NAMESPACE
+
+#if defined(QT_HAVE_MIPS_DSP)
+
+extern "C" uint INTERPOLATE_PIXEL_255_asm_mips_dsp(uint x, uint a, uint y, uint b);
+
+extern "C"  uint BYTE_MUL_asm_mips_dsp(uint x, uint a);
+
+extern "C" uint * destfetchARGB32_asm_mips_dsp(uint *buffer, const uint *data, int length);
+
+extern "C" uint * qt_destStoreARGB32_asm_mips_dsp(uint *buffer, const uint *data, int length);
+
+#if defined(QT_HAVE_MIPS_DSPR2)
+
+extern "C" uint INTERPOLATE_PIXEL_255_asm_mips_dspr2(uint x, uint a, uint y, uint b);
+
+extern "C" uint BYTE_MUL_asm_mips_dspr2(uint x, uint a);
+
+#endif // QT_HAVE_MIPS_DSPR2
+
+void qt_blend_argb32_on_argb32_mips_dsp(uchar *destPixels, int dbpl,
+                                      const uchar *srcPixels, int sbpl,
+                                      int w, int h,
+                                      int const_alpha)
+
+{
+#ifdef QT_DEBUG_DRAW
+    fprintf(stdout,
+            "qt_blend_argb32_on_argb32: dst=(%p, %d), src=(%p, %d), dim=(%d, %d) alpha=%d\n",
+            destPixels, dbpl, srcPixels, sbpl, w, h, const_alpha);
+    fflush(stdout);
+#endif
+
+    const uint *src = (const uint *) srcPixels;
+    uint *dst = (uint *) destPixels;
+    if (const_alpha == 256) {
+        for (int y=0; y<h; ++y) {
+            for (int x=0; x<w; ++x) {
+                uint s = src[x];
+                if (s >= 0xff000000)
+                    dst[x] = s;
+                else if (s != 0)
+#if !defined(QT_HAVE_MIPS_DSPR2)
+                    dst[x] = s + BYTE_MUL_asm_mips_dsp(dst[x], qAlpha(~s));
+#else
+                    dst[x] = s + BYTE_MUL_asm_mips_dspr2(dst[x], qAlpha(~s));
+#endif
+            }
+            dst = (quint32 *)(((uchar *) dst) + dbpl);
+            src = (const quint32 *)(((const uchar *) src) + sbpl);
+        }
+    } else if (const_alpha != 0) {
+        const_alpha = (const_alpha * 255) >> 8;
+        for (int y=0; y<h; ++y) {
+            for (int x=0; x<w; ++x) {
+#if !defined(QT_HAVE_MIPS_DSPR2)
+                uint s = BYTE_MUL_asm_mips_dsp(src[x], const_alpha);
+                dst[x] = s + BYTE_MUL_asm_mips_dsp(dst[x], qAlpha(~s));
+#else
+                uint s = BYTE_MUL_asm_mips_dspr2(src[x], const_alpha);
+                dst[x] = s + BYTE_MUL_asm_mips_dspr2(dst[x], qAlpha(~s));
+#endif
+            }
+            dst = (quint32 *)(((uchar *) dst) + dbpl);
+            src = (const quint32 *)(((const uchar *) src) + sbpl);
+        }
+    }
+}
+
+void qt_blend_rgb32_on_rgb32_mips_dsp(uchar *destPixels, int dbpl,
+                                    const uchar *srcPixels, int sbpl,
+                                    int w, int h,
+                                    int const_alpha)
+{
+#ifdef QT_DEBUG_DRAW
+    fprintf(stdout,
+            "qt_blend_rgb32_on_rgb32: dst=(%p, %d), src=(%p, %d), dim=(%d, %d) alpha=%d\n",
+            destPixels, dbpl, srcPixels, sbpl, w, h, const_alpha);
+    fflush(stdout);
+#endif
+
+    if (const_alpha != 256) {
+        qt_blend_argb32_on_argb32_mips_dsp(destPixels, dbpl, srcPixels, sbpl, w, h, const_alpha);
+        return;
+    }
+
+    const uint *src = (const uint *) srcPixels;
+    uint *dst = (uint *) destPixels;
+    int len = w * 4;
+    for (int y=0; y<h; ++y) {
+        memcpy(dst, src, len);
+        dst = (quint32 *)(((uchar *) dst) + dbpl);
+        src = (const quint32 *)(((const uchar *) src) + sbpl);
+    }
+}
+
+void comp_func_Source_mips_dsp(uint *dest, const uint *src, int length, uint const_alpha)
+{
+    if (const_alpha == 255) {
+        ::memcpy(dest, src, length * sizeof(uint));
+    } else {
+        int ialpha = 255 - const_alpha;
+        for (int i = 0; i < length; ++i) {
+#if !defined(QT_HAVE_MIPS_DSPR2)
+            dest[i] = INTERPOLATE_PIXEL_255_asm_mips_dsp(src[i], const_alpha, dest[i], ialpha);
+#else
+            dest[i] = INTERPOLATE_PIXEL_255_asm_mips_dspr2(src[i], const_alpha, dest[i], ialpha);
+#endif
+        }
+    }
+}
+
+uint * QT_FASTCALL qt_destFetchARGB32_mips_dsp(uint *buffer,
+                                          QRasterBuffer *rasterBuffer,
+                                          int x, int y, int length)
+{
+    const uint *data = (const uint *)rasterBuffer->scanLine(y) + x;
+    buffer = destfetchARGB32_asm_mips_dsp(buffer, data, length);
+    return buffer;
+}
+
+void QT_FASTCALL qt_destStoreARGB32_mips_dsp(QRasterBuffer *rasterBuffer, int x, int y,
+                                             const uint *buffer, int length)
+{
+    uint *data = (uint *)rasterBuffer->scanLine(y) + x;
+    qt_destStoreARGB32_asm_mips_dsp(data, buffer, length);
+}
+
+#endif // QT_HAVE_MIPS_DSP
+
+QT_END_NAMESPACE
-- 
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