author | michaelm |
Tue, 06 Mar 2012 20:34:38 +0000 | |
changeset 12047 | 320a714614e9 |
parent 7668 | d4a77089c587 |
child 12652 | 6fddf8394164 |
permissions | -rw-r--r-- |
2 | 1 |
/* |
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* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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#ifndef HEADLESS |
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7113349: Initial changeset for Macosx port to jdk
michaelm
parents:
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#include <stdlib.h> |
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#include <math.h> |
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#include <jlong.h> |
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#include "sun_java2d_opengl_OGLTextRenderer.h" |
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||
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#include "SurfaceData.h" |
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#include "OGLContext.h" |
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#include "OGLSurfaceData.h" |
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#include "OGLRenderQueue.h" |
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#include "OGLTextRenderer.h" |
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#include "OGLVertexCache.h" |
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40 |
#include "AccelGlyphCache.h" |
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41 |
#include "fontscalerdefs.h" |
|
42 |
||
43 |
/** |
|
44 |
* The following constants define the inner and outer bounds of the |
|
45 |
* accelerated glyph cache. |
|
46 |
*/ |
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47 |
#define OGLTR_CACHE_WIDTH 512 |
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#define OGLTR_CACHE_HEIGHT 512 |
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49 |
#define OGLTR_CACHE_CELL_WIDTH 16 |
|
50 |
#define OGLTR_CACHE_CELL_HEIGHT 16 |
|
51 |
||
52 |
/** |
|
53 |
* The current "glyph mode" state. This variable is used to track the |
|
54 |
* codepath used to render a particular glyph. This variable is reset to |
|
55 |
* MODE_NOT_INITED at the beginning of every call to OGLTR_DrawGlyphList(). |
|
56 |
* As each glyph is rendered, the glyphMode variable is updated to reflect |
|
57 |
* the current mode, so if the current mode is the same as the mode used |
|
58 |
* to render the previous glyph, we can avoid doing costly setup operations |
|
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* each time. |
|
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*/ |
|
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typedef enum { |
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MODE_NOT_INITED, |
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MODE_USE_CACHE_GRAY, |
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MODE_USE_CACHE_LCD, |
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MODE_NO_CACHE_GRAY, |
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MODE_NO_CACHE_LCD |
|
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} GlyphMode; |
|
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static GlyphMode glyphMode = MODE_NOT_INITED; |
|
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||
70 |
/** |
|
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* This enum indicates the current state of the hardware glyph cache. |
|
72 |
* Initially the CacheStatus is set to CACHE_NOT_INITED, and then it is |
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73 |
* set to either GRAY or LCD when the glyph cache is initialized. |
|
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*/ |
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typedef enum { |
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CACHE_NOT_INITED, |
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CACHE_GRAY, |
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CACHE_LCD |
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} CacheStatus; |
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80 |
static CacheStatus cacheStatus = CACHE_NOT_INITED; |
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81 |
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/** |
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* This is the one glyph cache. Once it is initialized as either GRAY or |
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* LCD, it stays in that mode for the duration of the application. It should |
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* be safe to use this one glyph cache for all screens in a multimon |
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* environment, since the glyph cache texture is shared between all contexts, |
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* and (in theory) OpenGL drivers should be smart enough to manage that |
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* texture across all screens. |
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*/ |
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static GlyphCacheInfo *glyphCache = NULL; |
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/** |
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* The handle to the LCD text fragment program object. |
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*/ |
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static GLhandleARB lcdTextProgram = 0; |
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/** |
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* The size of one of the gamma LUT textures in any one dimension along |
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* the edge, in texels. |
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*/ |
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#define LUT_EDGE 16 |
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/** |
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* These are the texture object handles for the gamma and inverse gamma |
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* lookup tables. |
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*/ |
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107 |
static GLuint gammaLutTextureID = 0; |
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static GLuint invGammaLutTextureID = 0; |
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109 |
||
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/** |
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* This value tracks the previous LCD contrast setting, so if the contrast |
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* value hasn't changed since the last time the lookup tables were |
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* generated (not very common), then we can skip updating the tables. |
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*/ |
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static jint lastLCDContrast = -1; |
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/** |
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* This value tracks the previous LCD rgbOrder setting, so if the rgbOrder |
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* value has changed since the last time, it indicates that we need to |
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* invalidate the cache, which may already store glyph images in the reverse |
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* order. Note that in most real world applications this value will not |
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* change over the course of the application, but tests like Font2DTest |
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* allow for changing the ordering at runtime, so we need to handle that case. |
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*/ |
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static jboolean lastRGBOrder = JNI_TRUE; |
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/** |
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* This constant defines the size of the tile to use in the |
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* OGLTR_DrawLCDGlyphNoCache() method. See below for more on why we |
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* restrict this value to a particular size. |
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*/ |
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#define OGLTR_NOCACHE_TILE_SIZE 32 |
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/** |
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* These constants define the size of the "cached destination" texture. |
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* This texture is only used when rendering LCD-optimized text, as that |
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* codepath needs direct access to the destination. There is no way to |
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* access the framebuffer directly from an OpenGL shader, so we need to first |
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* copy the destination region corresponding to a particular glyph into |
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* this cached texture, and then that texture will be accessed inside the |
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* shader. Copying the destination into this cached texture can be a very |
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* expensive operation (accounting for about half the rendering time for |
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* LCD text), so to mitigate this cost we try to bulk read a horizontal |
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* region of the destination at a time. (These values are empirically |
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* derived for the common case where text runs horizontally.) |
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* |
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* Note: It is assumed in various calculations below that: |
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* (OGLTR_CACHED_DEST_WIDTH >= OGLTR_CACHE_CELL_WIDTH) && |
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* (OGLTR_CACHED_DEST_WIDTH >= OGLTR_NOCACHE_TILE_SIZE) && |
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* (OGLTR_CACHED_DEST_HEIGHT >= OGLTR_CACHE_CELL_HEIGHT) && |
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* (OGLTR_CACHED_DEST_HEIGHT >= OGLTR_NOCACHE_TILE_SIZE) |
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*/ |
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#define OGLTR_CACHED_DEST_WIDTH 512 |
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#define OGLTR_CACHED_DEST_HEIGHT 32 |
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/** |
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* The handle to the "cached destination" texture object. |
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*/ |
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static GLuint cachedDestTextureID = 0; |
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/** |
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* The current bounds of the "cached destination" texture, in destination |
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* coordinate space. The width/height of these bounds will not exceed the |
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* OGLTR_CACHED_DEST_WIDTH/HEIGHT values defined above. These bounds are |
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* only considered valid when the isCachedDestValid flag is JNI_TRUE. |
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*/ |
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static SurfaceDataBounds cachedDestBounds; |
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/** |
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* This flag indicates whether the "cached destination" texture contains |
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* valid data. This flag is reset to JNI_FALSE at the beginning of every |
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* call to OGLTR_DrawGlyphList(). Once we copy valid destination data |
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* into the cached texture, this flag is set to JNI_TRUE. This way, we can |
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* limit the number of times we need to copy destination data, which is a |
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* very costly operation. |
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*/ |
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static jboolean isCachedDestValid = JNI_FALSE; |
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/** |
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* The bounds of the previously rendered LCD glyph, in destination |
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* coordinate space. We use these bounds to determine whether the glyph |
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* currently being rendered overlaps the previously rendered glyph (i.e. |
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* its bounding box intersects that of the previously rendered glyph). If |
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* so, we need to re-read the destination area associated with that previous |
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* glyph so that we can correctly blend with the actual destination data. |
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*/ |
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static SurfaceDataBounds previousGlyphBounds; |
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/** |
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* Initializes the one glyph cache (texture and data structure). |
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* If lcdCache is JNI_TRUE, the texture will contain RGB data, |
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* otherwise we will simply store the grayscale/monochrome glyph images |
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* as intensity values (which work well with the GL_MODULATE function). |
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*/ |
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static jboolean |
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OGLTR_InitGlyphCache(jboolean lcdCache) |
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{ |
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GlyphCacheInfo *gcinfo; |
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GLclampf priority = 1.0f; |
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GLenum internalFormat = lcdCache ? GL_RGB8 : GL_INTENSITY8; |
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GLenum pixelFormat = lcdCache ? GL_RGB : GL_LUMINANCE; |
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J2dTraceLn(J2D_TRACE_INFO, "OGLTR_InitGlyphCache"); |
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// init vertex cache (if it hasn't been already) |
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if (!OGLVertexCache_InitVertexCache()) { |
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return JNI_FALSE; |
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} |
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// init glyph cache data structure |
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gcinfo = AccelGlyphCache_Init(OGLTR_CACHE_WIDTH, |
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OGLTR_CACHE_HEIGHT, |
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OGLTR_CACHE_CELL_WIDTH, |
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OGLTR_CACHE_CELL_HEIGHT, |
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OGLVertexCache_FlushVertexCache); |
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if (gcinfo == NULL) { |
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J2dRlsTraceLn(J2D_TRACE_ERROR, |
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"OGLTR_InitGlyphCache: could not init OGL glyph cache"); |
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return JNI_FALSE; |
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} |
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// init cache texture object |
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j2d_glGenTextures(1, &gcinfo->cacheID); |
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j2d_glBindTexture(GL_TEXTURE_2D, gcinfo->cacheID); |
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j2d_glPrioritizeTextures(1, &gcinfo->cacheID, &priority); |
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j2d_glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
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j2d_glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
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j2d_glTexImage2D(GL_TEXTURE_2D, 0, internalFormat, |
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OGLTR_CACHE_WIDTH, OGLTR_CACHE_HEIGHT, 0, |
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pixelFormat, GL_UNSIGNED_BYTE, NULL); |
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cacheStatus = (lcdCache ? CACHE_LCD : CACHE_GRAY); |
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glyphCache = gcinfo; |
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return JNI_TRUE; |
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} |
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/** |
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* Adds the given glyph to the glyph cache (texture and data structure) |
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* associated with the given OGLContext. |
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*/ |
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static void |
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OGLTR_AddToGlyphCache(GlyphInfo *glyph, jboolean rgbOrder) |
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{ |
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GLenum pixelFormat; |
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CacheCellInfo *ccinfo; |
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J2dTraceLn(J2D_TRACE_INFO, "OGLTR_AddToGlyphCache"); |
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if ((glyphCache == NULL) || (glyph->image == NULL)) { |
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return; |
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} |
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if (cacheStatus == CACHE_LCD) { |
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pixelFormat = rgbOrder ? GL_RGB : GL_BGR; |
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} else { |
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pixelFormat = GL_LUMINANCE; |
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} |
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AccelGlyphCache_AddGlyph(glyphCache, glyph); |
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ccinfo = (CacheCellInfo *) glyph->cellInfo; |
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if (ccinfo != NULL) { |
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// store glyph image in texture cell |
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j2d_glTexSubImage2D(GL_TEXTURE_2D, 0, |
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ccinfo->x, ccinfo->y, |
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glyph->width, glyph->height, |
269 |
pixelFormat, GL_UNSIGNED_BYTE, glyph->image); |
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} |
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} |
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/** |
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274 |
* This is the GLSL fragment shader source code for rendering LCD-optimized |
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* text. Do not be frightened; it is much easier to understand than the |
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* equivalent ASM-like fragment program! |
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* |
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* The "uniform" variables at the top are initialized once the program is |
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* linked, and are updated at runtime as needed (e.g. when the source color |
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* changes, we will modify the "src_adj" value in OGLTR_UpdateLCDTextColor()). |
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* |
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282 |
* The "main" function is executed for each "fragment" (or pixel) in the |
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* glyph image. We have determined that the pow() function can be quite |
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284 |
* slow and it only operates on scalar values, not vectors as we require. |
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* So instead we build two 3D textures containing gamma (and inverse gamma) |
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* lookup tables that allow us to approximate a component-wise pow() function |
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* with a single 3D texture lookup. This approach is at least 2x faster |
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* than the equivalent pow() calls. |
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289 |
* |
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290 |
* The variables involved in the equation can be expressed as follows: |
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291 |
* |
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292 |
* Cs = Color component of the source (foreground color) [0.0, 1.0] |
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293 |
* Cd = Color component of the destination (background color) [0.0, 1.0] |
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294 |
* Cr = Color component to be written to the destination [0.0, 1.0] |
|
295 |
* Ag = Glyph alpha (aka intensity or coverage) [0.0, 1.0] |
|
296 |
* Ga = Gamma adjustment in the range [1.0, 2.5] |
|
297 |
* (^ means raised to the power) |
|
298 |
* |
|
299 |
* And here is the theoretical equation approximated by this shader: |
|
300 |
* |
|
301 |
* Cr = (Ag*(Cs^Ga) + (1-Ag)*(Cd^Ga)) ^ (1/Ga) |
|
302 |
*/ |
|
303 |
static const char *lcdTextShaderSource = |
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304 |
"uniform vec3 src_adj;" |
|
305 |
"uniform sampler2D glyph_tex;" |
|
306 |
"uniform sampler2D dst_tex;" |
|
307 |
"uniform sampler3D invgamma_tex;" |
|
308 |
"uniform sampler3D gamma_tex;" |
|
309 |
"" |
|
310 |
"void main(void)" |
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311 |
"{" |
|
312 |
// load the RGB value from the glyph image at the current texcoord |
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313 |
" vec3 glyph_clr = vec3(texture2D(glyph_tex, gl_TexCoord[0].st));" |
|
314 |
" if (glyph_clr == vec3(0.0)) {" |
|
315 |
// zero coverage, so skip this fragment |
|
316 |
" discard;" |
|
317 |
" }" |
|
318 |
// load the RGB value from the corresponding destination pixel |
|
319 |
" vec3 dst_clr = vec3(texture2D(dst_tex, gl_TexCoord[1].st));" |
|
320 |
// gamma adjust the dest color using the invgamma LUT |
|
321 |
" vec3 dst_adj = vec3(texture3D(invgamma_tex, dst_clr.stp));" |
|
322 |
// linearly interpolate the three color values |
|
323 |
" vec3 result = mix(dst_adj, src_adj, glyph_clr);" |
|
324 |
// gamma re-adjust the resulting color (alpha is always set to 1.0) |
|
325 |
" gl_FragColor = vec4(vec3(texture3D(gamma_tex, result.stp)), 1.0);" |
|
326 |
"}"; |
|
327 |
||
328 |
/** |
|
329 |
* Compiles and links the LCD text shader program. If successful, this |
|
330 |
* function returns a handle to the newly created shader program; otherwise |
|
331 |
* returns 0. |
|
332 |
*/ |
|
333 |
static GLhandleARB |
|
334 |
OGLTR_CreateLCDTextProgram() |
|
335 |
{ |
|
336 |
GLhandleARB lcdTextProgram; |
|
337 |
GLint loc; |
|
338 |
||
339 |
J2dTraceLn(J2D_TRACE_INFO, "OGLTR_CreateLCDTextProgram"); |
|
340 |
||
341 |
lcdTextProgram = OGLContext_CreateFragmentProgram(lcdTextShaderSource); |
|
342 |
if (lcdTextProgram == 0) { |
|
343 |
J2dRlsTraceLn(J2D_TRACE_ERROR, |
|
344 |
"OGLTR_CreateLCDTextProgram: error creating program"); |
|
345 |
return 0; |
|
346 |
} |
|
347 |
||
348 |
// "use" the program object temporarily so that we can set the uniforms |
|
349 |
j2d_glUseProgramObjectARB(lcdTextProgram); |
|
350 |
||
351 |
// set the "uniform" values |
|
352 |
loc = j2d_glGetUniformLocationARB(lcdTextProgram, "glyph_tex"); |
|
353 |
j2d_glUniform1iARB(loc, 0); // texture unit 0 |
|
354 |
loc = j2d_glGetUniformLocationARB(lcdTextProgram, "dst_tex"); |
|
355 |
j2d_glUniform1iARB(loc, 1); // texture unit 1 |
|
356 |
loc = j2d_glGetUniformLocationARB(lcdTextProgram, "invgamma_tex"); |
|
357 |
j2d_glUniform1iARB(loc, 2); // texture unit 2 |
|
358 |
loc = j2d_glGetUniformLocationARB(lcdTextProgram, "gamma_tex"); |
|
359 |
j2d_glUniform1iARB(loc, 3); // texture unit 3 |
|
360 |
||
361 |
// "unuse" the program object; it will be re-bound later as needed |
|
362 |
j2d_glUseProgramObjectARB(0); |
|
363 |
||
364 |
return lcdTextProgram; |
|
365 |
} |
|
366 |
||
367 |
/** |
|
368 |
* Initializes a 3D texture object for use as a three-dimensional gamma |
|
369 |
* lookup table. Note that the wrap mode is initialized to GL_LINEAR so |
|
370 |
* that the table will interpolate adjacent values when the index falls |
|
371 |
* somewhere in between. |
|
372 |
*/ |
|
373 |
static GLuint |
|
374 |
OGLTR_InitGammaLutTexture() |
|
375 |
{ |
|
376 |
GLuint lutTextureID; |
|
377 |
||
378 |
j2d_glGenTextures(1, &lutTextureID); |
|
379 |
j2d_glBindTexture(GL_TEXTURE_3D, lutTextureID); |
|
380 |
j2d_glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); |
|
381 |
j2d_glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); |
|
382 |
j2d_glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
|
383 |
j2d_glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); |
|
384 |
j2d_glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE); |
|
385 |
||
386 |
return lutTextureID; |
|
387 |
} |
|
388 |
||
389 |
/** |
|
390 |
* Updates the lookup table in the given texture object with the float |
|
391 |
* values in the given system memory buffer. Note that we could use |
|
392 |
* glTexSubImage3D() when updating the texture after its first |
|
393 |
* initialization, but since we're updating the entire table (with |
|
394 |
* power-of-two dimensions) and this is a relatively rare event, we'll |
|
395 |
* just stick with glTexImage3D(). |
|
396 |
*/ |
|
397 |
static void |
|
398 |
OGLTR_UpdateGammaLutTexture(GLuint texID, GLfloat *lut, jint size) |
|
399 |
{ |
|
400 |
j2d_glBindTexture(GL_TEXTURE_3D, texID); |
|
401 |
j2d_glTexImage3D(GL_TEXTURE_3D, 0, GL_RGB8, |
|
402 |
size, size, size, 0, GL_RGB, GL_FLOAT, lut); |
|
403 |
} |
|
404 |
||
405 |
/** |
|
406 |
* (Re)Initializes the gamma lookup table textures. |
|
407 |
* |
|
408 |
* The given contrast value is an int in the range [100, 250] which we will |
|
409 |
* then scale to fit in the range [1.0, 2.5]. We create two LUTs, one |
|
410 |
* that essentially calculates pow(x, gamma) and the other calculates |
|
411 |
* pow(x, 1/gamma). These values are replicated in all three dimensions, so |
|
412 |
* given a single 3D texture coordinate (typically this will be a triplet |
|
413 |
* in the form (r,g,b)), the 3D texture lookup will return an RGB triplet: |
|
414 |
* |
|
415 |
* (pow(r,g), pow(y,g), pow(z,g) |
|
416 |
* |
|
417 |
* where g is either gamma or 1/gamma, depending on the table. |
|
418 |
*/ |
|
419 |
static jboolean |
|
420 |
OGLTR_UpdateLCDTextContrast(jint contrast) |
|
421 |
{ |
|
422 |
double gamma = ((double)contrast) / 100.0; |
|
423 |
double ig = gamma; |
|
424 |
double g = 1.0 / ig; |
|
425 |
GLfloat lut[LUT_EDGE][LUT_EDGE][LUT_EDGE][3]; |
|
426 |
GLfloat invlut[LUT_EDGE][LUT_EDGE][LUT_EDGE][3]; |
|
427 |
int min = 0; |
|
428 |
int max = LUT_EDGE - 1; |
|
429 |
int x, y, z; |
|
430 |
||
431 |
J2dTraceLn1(J2D_TRACE_INFO, |
|
432 |
"OGLTR_UpdateLCDTextContrast: contrast=%d", contrast); |
|
433 |
||
434 |
for (z = min; z <= max; z++) { |
|
435 |
double zval = ((double)z) / max; |
|
436 |
GLfloat gz = (GLfloat)pow(zval, g); |
|
437 |
GLfloat igz = (GLfloat)pow(zval, ig); |
|
438 |
||
439 |
for (y = min; y <= max; y++) { |
|
440 |
double yval = ((double)y) / max; |
|
441 |
GLfloat gy = (GLfloat)pow(yval, g); |
|
442 |
GLfloat igy = (GLfloat)pow(yval, ig); |
|
443 |
||
444 |
for (x = min; x <= max; x++) { |
|
445 |
double xval = ((double)x) / max; |
|
446 |
GLfloat gx = (GLfloat)pow(xval, g); |
|
447 |
GLfloat igx = (GLfloat)pow(xval, ig); |
|
448 |
||
449 |
lut[z][y][x][0] = gx; |
|
450 |
lut[z][y][x][1] = gy; |
|
451 |
lut[z][y][x][2] = gz; |
|
452 |
||
453 |
invlut[z][y][x][0] = igx; |
|
454 |
invlut[z][y][x][1] = igy; |
|
455 |
invlut[z][y][x][2] = igz; |
|
456 |
} |
|
457 |
} |
|
458 |
} |
|
459 |
||
460 |
if (gammaLutTextureID == 0) { |
|
461 |
gammaLutTextureID = OGLTR_InitGammaLutTexture(); |
|
462 |
} |
|
463 |
OGLTR_UpdateGammaLutTexture(gammaLutTextureID, (GLfloat *)lut, LUT_EDGE); |
|
464 |
||
465 |
if (invGammaLutTextureID == 0) { |
|
466 |
invGammaLutTextureID = OGLTR_InitGammaLutTexture(); |
|
467 |
} |
|
468 |
OGLTR_UpdateGammaLutTexture(invGammaLutTextureID, |
|
469 |
(GLfloat *)invlut, LUT_EDGE); |
|
470 |
||
471 |
return JNI_TRUE; |
|
472 |
} |
|
473 |
||
474 |
/** |
|
475 |
* Updates the current gamma-adjusted source color ("src_adj") of the LCD |
|
476 |
* text shader program. Note that we could calculate this value in the |
|
477 |
* shader (e.g. just as we do for "dst_adj"), but would be unnecessary work |
|
478 |
* (and a measurable performance hit, maybe around 5%) since this value is |
|
479 |
* constant over the entire glyph list. So instead we just calculate the |
|
480 |
* gamma-adjusted value once and update the uniform parameter of the LCD |
|
481 |
* shader as needed. |
|
482 |
*/ |
|
483 |
static jboolean |
|
484 |
OGLTR_UpdateLCDTextColor(jint contrast) |
|
485 |
{ |
|
486 |
double gamma = ((double)contrast) / 100.0; |
|
487 |
GLfloat radj, gadj, badj; |
|
488 |
GLfloat clr[4]; |
|
489 |
GLint loc; |
|
490 |
||
491 |
J2dTraceLn1(J2D_TRACE_INFO, |
|
492 |
"OGLTR_UpdateLCDTextColor: contrast=%d", contrast); |
|
493 |
||
494 |
/* |
|
495 |
* Note: Ideally we would update the "src_adj" uniform parameter only |
|
496 |
* when there is a change in the source color. Fortunately, the cost |
|
497 |
* of querying the current OpenGL color state and updating the uniform |
|
498 |
* value is quite small, and in the common case we only need to do this |
|
499 |
* once per GlyphList, so we gain little from trying to optimize too |
|
500 |
* eagerly here. |
|
501 |
*/ |
|
502 |
||
503 |
// get the current OpenGL primary color state |
|
504 |
j2d_glGetFloatv(GL_CURRENT_COLOR, clr); |
|
505 |
||
506 |
// gamma adjust the primary color |
|
507 |
radj = (GLfloat)pow(clr[0], gamma); |
|
508 |
gadj = (GLfloat)pow(clr[1], gamma); |
|
509 |
badj = (GLfloat)pow(clr[2], gamma); |
|
510 |
||
511 |
// update the "src_adj" parameter of the shader program with this value |
|
512 |
loc = j2d_glGetUniformLocationARB(lcdTextProgram, "src_adj"); |
|
513 |
j2d_glUniform3fARB(loc, radj, gadj, badj); |
|
514 |
||
515 |
return JNI_TRUE; |
|
516 |
} |
|
517 |
||
518 |
/** |
|
519 |
* Enables the LCD text shader and updates any related state, such as the |
|
520 |
* gamma lookup table textures. |
|
521 |
*/ |
|
522 |
static jboolean |
|
523 |
OGLTR_EnableLCDGlyphModeState(GLuint glyphTextureID, jint contrast) |
|
524 |
{ |
|
525 |
// bind the texture containing glyph data to texture unit 0 |
|
526 |
j2d_glActiveTextureARB(GL_TEXTURE0_ARB); |
|
527 |
j2d_glBindTexture(GL_TEXTURE_2D, glyphTextureID); |
|
528 |
||
529 |
// bind the texture tile containing destination data to texture unit 1 |
|
530 |
j2d_glActiveTextureARB(GL_TEXTURE1_ARB); |
|
531 |
if (cachedDestTextureID == 0) { |
|
532 |
cachedDestTextureID = |
|
533 |
OGLContext_CreateBlitTexture(GL_RGB8, GL_RGB, |
|
534 |
OGLTR_CACHED_DEST_WIDTH, |
|
535 |
OGLTR_CACHED_DEST_HEIGHT); |
|
536 |
if (cachedDestTextureID == 0) { |
|
537 |
return JNI_FALSE; |
|
538 |
} |
|
539 |
} |
|
540 |
j2d_glBindTexture(GL_TEXTURE_2D, cachedDestTextureID); |
|
541 |
||
542 |
// note that GL_TEXTURE_2D was already enabled for texture unit 0, |
|
543 |
// but we need to explicitly enable it for texture unit 1 |
|
544 |
j2d_glEnable(GL_TEXTURE_2D); |
|
545 |
||
546 |
// create the LCD text shader, if necessary |
|
547 |
if (lcdTextProgram == 0) { |
|
548 |
lcdTextProgram = OGLTR_CreateLCDTextProgram(); |
|
549 |
if (lcdTextProgram == 0) { |
|
550 |
return JNI_FALSE; |
|
551 |
} |
|
552 |
} |
|
553 |
||
554 |
// enable the LCD text shader |
|
555 |
j2d_glUseProgramObjectARB(lcdTextProgram); |
|
556 |
||
557 |
// update the current contrast settings, if necessary |
|
558 |
if (lastLCDContrast != contrast) { |
|
559 |
if (!OGLTR_UpdateLCDTextContrast(contrast)) { |
|
560 |
return JNI_FALSE; |
|
561 |
} |
|
562 |
lastLCDContrast = contrast; |
|
563 |
} |
|
564 |
||
565 |
// update the current color settings |
|
566 |
if (!OGLTR_UpdateLCDTextColor(contrast)) { |
|
567 |
return JNI_FALSE; |
|
568 |
} |
|
569 |
||
570 |
// bind the gamma LUT textures |
|
571 |
j2d_glActiveTextureARB(GL_TEXTURE2_ARB); |
|
572 |
j2d_glBindTexture(GL_TEXTURE_3D, invGammaLutTextureID); |
|
573 |
j2d_glEnable(GL_TEXTURE_3D); |
|
574 |
j2d_glActiveTextureARB(GL_TEXTURE3_ARB); |
|
575 |
j2d_glBindTexture(GL_TEXTURE_3D, gammaLutTextureID); |
|
576 |
j2d_glEnable(GL_TEXTURE_3D); |
|
577 |
||
578 |
return JNI_TRUE; |
|
579 |
} |
|
580 |
||
581 |
void |
|
582 |
OGLTR_EnableGlyphVertexCache(OGLContext *oglc) |
|
583 |
{ |
|
584 |
J2dTraceLn(J2D_TRACE_INFO, "OGLTR_EnableGlyphVertexCache"); |
|
585 |
||
586 |
if (glyphCache == NULL) { |
|
587 |
if (!OGLTR_InitGlyphCache(JNI_FALSE)) { |
|
588 |
return; |
|
589 |
} |
|
590 |
} |
|
591 |
||
592 |
j2d_glEnable(GL_TEXTURE_2D); |
|
593 |
j2d_glBindTexture(GL_TEXTURE_2D, glyphCache->cacheID); |
|
594 |
j2d_glPixelStorei(GL_UNPACK_ALIGNMENT, 1); |
|
595 |
||
596 |
// for grayscale/monochrome text, the current OpenGL source color |
|
597 |
// is modulated with the glyph image as part of the texture |
|
598 |
// application stage, so we use GL_MODULATE here |
|
599 |
OGLC_UPDATE_TEXTURE_FUNCTION(oglc, GL_MODULATE); |
|
600 |
} |
|
601 |
||
602 |
void |
|
603 |
OGLTR_DisableGlyphVertexCache(OGLContext *oglc) |
|
604 |
{ |
|
605 |
J2dTraceLn(J2D_TRACE_INFO, "OGLTR_DisableGlyphVertexCache"); |
|
606 |
||
607 |
OGLVertexCache_FlushVertexCache(); |
|
608 |
OGLVertexCache_RestoreColorState(oglc); |
|
609 |
||
610 |
j2d_glDisable(GL_TEXTURE_2D); |
|
611 |
j2d_glPixelStorei(GL_UNPACK_ALIGNMENT, 4); |
|
612 |
j2d_glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0); |
|
613 |
j2d_glPixelStorei(GL_UNPACK_SKIP_ROWS, 0); |
|
614 |
j2d_glPixelStorei(GL_UNPACK_ROW_LENGTH, 0); |
|
615 |
} |
|
616 |
||
617 |
/** |
|
618 |
* Disables any pending state associated with the current "glyph mode". |
|
619 |
*/ |
|
620 |
static void |
|
621 |
OGLTR_DisableGlyphModeState() |
|
622 |
{ |
|
623 |
switch (glyphMode) { |
|
624 |
case MODE_NO_CACHE_LCD: |
|
625 |
j2d_glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0); |
|
626 |
j2d_glPixelStorei(GL_UNPACK_SKIP_ROWS, 0); |
|
627 |
/* FALLTHROUGH */ |
|
628 |
||
629 |
case MODE_USE_CACHE_LCD: |
|
630 |
j2d_glPixelStorei(GL_UNPACK_ROW_LENGTH, 0); |
|
631 |
j2d_glPixelStorei(GL_UNPACK_ALIGNMENT, 4); |
|
632 |
j2d_glUseProgramObjectARB(0); |
|
633 |
j2d_glActiveTextureARB(GL_TEXTURE3_ARB); |
|
634 |
j2d_glDisable(GL_TEXTURE_3D); |
|
635 |
j2d_glActiveTextureARB(GL_TEXTURE2_ARB); |
|
636 |
j2d_glDisable(GL_TEXTURE_3D); |
|
637 |
j2d_glActiveTextureARB(GL_TEXTURE1_ARB); |
|
638 |
j2d_glDisable(GL_TEXTURE_2D); |
|
639 |
j2d_glActiveTextureARB(GL_TEXTURE0_ARB); |
|
640 |
break; |
|
641 |
||
642 |
case MODE_NO_CACHE_GRAY: |
|
643 |
case MODE_USE_CACHE_GRAY: |
|
644 |
case MODE_NOT_INITED: |
|
645 |
default: |
|
646 |
break; |
|
647 |
} |
|
648 |
} |
|
649 |
||
650 |
static jboolean |
|
651 |
OGLTR_DrawGrayscaleGlyphViaCache(OGLContext *oglc, |
|
652 |
GlyphInfo *ginfo, jint x, jint y) |
|
653 |
{ |
|
654 |
CacheCellInfo *cell; |
|
655 |
jfloat x1, y1, x2, y2; |
|
656 |
||
657 |
if (glyphMode != MODE_USE_CACHE_GRAY) { |
|
658 |
OGLTR_DisableGlyphModeState(); |
|
659 |
CHECK_PREVIOUS_OP(OGL_STATE_GLYPH_OP); |
|
660 |
glyphMode = MODE_USE_CACHE_GRAY; |
|
661 |
} |
|
662 |
||
663 |
if (ginfo->cellInfo == NULL) { |
|
664 |
// attempt to add glyph to accelerated glyph cache |
|
665 |
OGLTR_AddToGlyphCache(ginfo, JNI_FALSE); |
|
666 |
||
667 |
if (ginfo->cellInfo == NULL) { |
|
668 |
// we'll just no-op in the rare case that the cell is NULL |
|
669 |
return JNI_TRUE; |
|
670 |
} |
|
671 |
} |
|
672 |
||
5579
1a5e995a710b
6307603: [X11] Use RENDER extension for complex operations done in software
ceisserer
parents:
2
diff
changeset
|
673 |
cell = (CacheCellInfo *) (ginfo->cellInfo); |
2 | 674 |
cell->timesRendered++; |
675 |
||
676 |
x1 = (jfloat)x; |
|
677 |
y1 = (jfloat)y; |
|
678 |
x2 = x1 + ginfo->width; |
|
679 |
y2 = y1 + ginfo->height; |
|
680 |
||
681 |
OGLVertexCache_AddGlyphQuad(oglc, |
|
682 |
cell->tx1, cell->ty1, |
|
683 |
cell->tx2, cell->ty2, |
|
684 |
x1, y1, x2, y2); |
|
685 |
||
686 |
return JNI_TRUE; |
|
687 |
} |
|
688 |
||
689 |
/** |
|
690 |
* Evaluates to true if the rectangle defined by gx1/gy1/gx2/gy2 is |
|
691 |
* inside outerBounds. |
|
692 |
*/ |
|
693 |
#define INSIDE(gx1, gy1, gx2, gy2, outerBounds) \ |
|
694 |
(((gx1) >= outerBounds.x1) && ((gy1) >= outerBounds.y1) && \ |
|
695 |
((gx2) <= outerBounds.x2) && ((gy2) <= outerBounds.y2)) |
|
696 |
||
697 |
/** |
|
698 |
* Evaluates to true if the rectangle defined by gx1/gy1/gx2/gy2 intersects |
|
699 |
* the rectangle defined by bounds. |
|
700 |
*/ |
|
701 |
#define INTERSECTS(gx1, gy1, gx2, gy2, bounds) \ |
|
702 |
((bounds.x2 > (gx1)) && (bounds.y2 > (gy1)) && \ |
|
703 |
(bounds.x1 < (gx2)) && (bounds.y1 < (gy2))) |
|
704 |
||
705 |
/** |
|
706 |
* This method checks to see if the given LCD glyph bounds fall within the |
|
707 |
* cached destination texture bounds. If so, this method can return |
|
708 |
* immediately. If not, this method will copy a chunk of framebuffer data |
|
709 |
* into the cached destination texture and then update the current cached |
|
710 |
* destination bounds before returning. |
|
711 |
*/ |
|
712 |
static void |
|
713 |
OGLTR_UpdateCachedDestination(OGLSDOps *dstOps, GlyphInfo *ginfo, |
|
714 |
jint gx1, jint gy1, jint gx2, jint gy2, |
|
715 |
jint glyphIndex, jint totalGlyphs) |
|
716 |
{ |
|
717 |
jint dx1, dy1, dx2, dy2; |
|
718 |
jint dx1adj, dy1adj; |
|
719 |
||
720 |
if (isCachedDestValid && INSIDE(gx1, gy1, gx2, gy2, cachedDestBounds)) { |
|
721 |
// glyph is already within the cached destination bounds; no need |
|
722 |
// to read back the entire destination region again, but we do |
|
723 |
// need to see if the current glyph overlaps the previous glyph... |
|
724 |
||
725 |
if (INTERSECTS(gx1, gy1, gx2, gy2, previousGlyphBounds)) { |
|
726 |
// the current glyph overlaps the destination region touched |
|
727 |
// by the previous glyph, so now we need to read back the part |
|
728 |
// of the destination corresponding to the previous glyph |
|
729 |
dx1 = previousGlyphBounds.x1; |
|
730 |
dy1 = previousGlyphBounds.y1; |
|
731 |
dx2 = previousGlyphBounds.x2; |
|
732 |
dy2 = previousGlyphBounds.y2; |
|
733 |
||
734 |
// this accounts for lower-left origin of the destination region |
|
735 |
dx1adj = dstOps->xOffset + dx1; |
|
736 |
dy1adj = dstOps->yOffset + dstOps->height - dy2; |
|
737 |
||
738 |
// copy destination into subregion of cached texture tile: |
|
739 |
// dx1-cachedDestBounds.x1 == +xoffset from left side of texture |
|
740 |
// cachedDestBounds.y2-dy2 == +yoffset from bottom of texture |
|
741 |
j2d_glActiveTextureARB(GL_TEXTURE1_ARB); |
|
742 |
j2d_glCopyTexSubImage2D(GL_TEXTURE_2D, 0, |
|
743 |
dx1 - cachedDestBounds.x1, |
|
744 |
cachedDestBounds.y2 - dy2, |
|
745 |
dx1adj, dy1adj, |
|
746 |
dx2-dx1, dy2-dy1); |
|
747 |
} |
|
748 |
} else { |
|
749 |
jint remainingWidth; |
|
750 |
||
751 |
// destination region is not valid, so we need to read back a |
|
752 |
// chunk of the destination into our cached texture |
|
753 |
||
754 |
// position the upper-left corner of the destination region on the |
|
755 |
// "top" line of glyph list |
|
756 |
// REMIND: this isn't ideal; it would be better if we had some idea |
|
757 |
// of the bounding box of the whole glyph list (this is |
|
758 |
// do-able, but would require iterating through the whole |
|
759 |
// list up front, which may present its own problems) |
|
760 |
dx1 = gx1; |
|
761 |
dy1 = gy1; |
|
762 |
||
763 |
if (ginfo->advanceX > 0) { |
|
764 |
// estimate the width based on our current position in the glyph |
|
765 |
// list and using the x advance of the current glyph (this is just |
|
766 |
// a quick and dirty heuristic; if this is a "thin" glyph image, |
|
767 |
// then we're likely to underestimate, and if it's "thick" then we |
|
768 |
// may end up reading back more than we need to) |
|
769 |
remainingWidth = |
|
770 |
(jint)(ginfo->advanceX * (totalGlyphs - glyphIndex)); |
|
771 |
if (remainingWidth > OGLTR_CACHED_DEST_WIDTH) { |
|
772 |
remainingWidth = OGLTR_CACHED_DEST_WIDTH; |
|
773 |
} else if (remainingWidth < ginfo->width) { |
|
774 |
// in some cases, the x-advance may be slightly smaller |
|
775 |
// than the actual width of the glyph; if so, adjust our |
|
776 |
// estimate so that we can accomodate the entire glyph |
|
777 |
remainingWidth = ginfo->width; |
|
778 |
} |
|
779 |
} else { |
|
780 |
// a negative advance is possible when rendering rotated text, |
|
781 |
// in which case it is difficult to estimate an appropriate |
|
782 |
// region for readback, so we will pick a region that |
|
783 |
// encompasses just the current glyph |
|
784 |
remainingWidth = ginfo->width; |
|
785 |
} |
|
786 |
dx2 = dx1 + remainingWidth; |
|
787 |
||
788 |
// estimate the height (this is another sloppy heuristic; we'll |
|
789 |
// make the cached destination region tall enough to encompass most |
|
790 |
// glyphs that are small enough to fit in the glyph cache, and then |
|
791 |
// we add a little something extra to account for descenders |
|
792 |
dy2 = dy1 + OGLTR_CACHE_CELL_HEIGHT + 2; |
|
793 |
||
794 |
// this accounts for lower-left origin of the destination region |
|
795 |
dx1adj = dstOps->xOffset + dx1; |
|
796 |
dy1adj = dstOps->yOffset + dstOps->height - dy2; |
|
797 |
||
798 |
// copy destination into cached texture tile (the lower-left corner |
|
799 |
// of the destination region will be positioned at the lower-left |
|
800 |
// corner (0,0) of the texture) |
|
801 |
j2d_glActiveTextureARB(GL_TEXTURE1_ARB); |
|
802 |
j2d_glCopyTexSubImage2D(GL_TEXTURE_2D, 0, |
|
803 |
0, 0, dx1adj, dy1adj, |
|
804 |
dx2-dx1, dy2-dy1); |
|
805 |
||
806 |
// update the cached bounds and mark it valid |
|
807 |
cachedDestBounds.x1 = dx1; |
|
808 |
cachedDestBounds.y1 = dy1; |
|
809 |
cachedDestBounds.x2 = dx2; |
|
810 |
cachedDestBounds.y2 = dy2; |
|
811 |
isCachedDestValid = JNI_TRUE; |
|
812 |
} |
|
813 |
||
814 |
// always update the previous glyph bounds |
|
815 |
previousGlyphBounds.x1 = gx1; |
|
816 |
previousGlyphBounds.y1 = gy1; |
|
817 |
previousGlyphBounds.x2 = gx2; |
|
818 |
previousGlyphBounds.y2 = gy2; |
|
819 |
} |
|
820 |
||
821 |
static jboolean |
|
822 |
OGLTR_DrawLCDGlyphViaCache(OGLContext *oglc, OGLSDOps *dstOps, |
|
823 |
GlyphInfo *ginfo, jint x, jint y, |
|
824 |
jint glyphIndex, jint totalGlyphs, |
|
825 |
jboolean rgbOrder, jint contrast) |
|
826 |
{ |
|
827 |
CacheCellInfo *cell; |
|
828 |
jint dx1, dy1, dx2, dy2; |
|
829 |
jfloat dtx1, dty1, dtx2, dty2; |
|
830 |
||
831 |
if (glyphMode != MODE_USE_CACHE_LCD) { |
|
832 |
OGLTR_DisableGlyphModeState(); |
|
833 |
CHECK_PREVIOUS_OP(GL_TEXTURE_2D); |
|
834 |
j2d_glPixelStorei(GL_UNPACK_ALIGNMENT, 1); |
|
835 |
||
836 |
if (glyphCache == NULL) { |
|
837 |
if (!OGLTR_InitGlyphCache(JNI_TRUE)) { |
|
838 |
return JNI_FALSE; |
|
839 |
} |
|
840 |
} |
|
841 |
||
842 |
if (rgbOrder != lastRGBOrder) { |
|
843 |
// need to invalidate the cache in this case; see comments |
|
844 |
// for lastRGBOrder above |
|
845 |
AccelGlyphCache_Invalidate(glyphCache); |
|
846 |
lastRGBOrder = rgbOrder; |
|
847 |
} |
|
848 |
||
849 |
if (!OGLTR_EnableLCDGlyphModeState(glyphCache->cacheID, contrast)) { |
|
850 |
return JNI_FALSE; |
|
851 |
} |
|
852 |
||
853 |
// when a fragment shader is enabled, the texture function state is |
|
854 |
// ignored, so the following line is not needed... |
|
855 |
// OGLC_UPDATE_TEXTURE_FUNCTION(oglc, GL_MODULATE); |
|
856 |
||
857 |
glyphMode = MODE_USE_CACHE_LCD; |
|
858 |
} |
|
859 |
||
860 |
if (ginfo->cellInfo == NULL) { |
|
861 |
// rowBytes will always be a multiple of 3, so the following is safe |
|
862 |
j2d_glPixelStorei(GL_UNPACK_ROW_LENGTH, ginfo->rowBytes / 3); |
|
863 |
||
864 |
// make sure the glyph cache texture is bound to texture unit 0 |
|
865 |
j2d_glActiveTextureARB(GL_TEXTURE0_ARB); |
|
866 |
||
867 |
// attempt to add glyph to accelerated glyph cache |
|
868 |
OGLTR_AddToGlyphCache(ginfo, rgbOrder); |
|
869 |
||
870 |
if (ginfo->cellInfo == NULL) { |
|
871 |
// we'll just no-op in the rare case that the cell is NULL |
|
872 |
return JNI_TRUE; |
|
873 |
} |
|
874 |
} |
|
875 |
||
5579
1a5e995a710b
6307603: [X11] Use RENDER extension for complex operations done in software
ceisserer
parents:
2
diff
changeset
|
876 |
cell = (CacheCellInfo *) (ginfo->cellInfo); |
2 | 877 |
cell->timesRendered++; |
878 |
||
879 |
// location of the glyph in the destination's coordinate space |
|
880 |
dx1 = x; |
|
881 |
dy1 = y; |
|
882 |
dx2 = dx1 + ginfo->width; |
|
883 |
dy2 = dy1 + ginfo->height; |
|
884 |
||
885 |
// copy destination into second cached texture, if necessary |
|
886 |
OGLTR_UpdateCachedDestination(dstOps, ginfo, |
|
887 |
dx1, dy1, dx2, dy2, |
|
888 |
glyphIndex, totalGlyphs); |
|
889 |
||
890 |
// texture coordinates of the destination tile |
|
891 |
dtx1 = ((jfloat)(dx1 - cachedDestBounds.x1)) / OGLTR_CACHED_DEST_WIDTH; |
|
892 |
dty1 = ((jfloat)(cachedDestBounds.y2 - dy1)) / OGLTR_CACHED_DEST_HEIGHT; |
|
893 |
dtx2 = ((jfloat)(dx2 - cachedDestBounds.x1)) / OGLTR_CACHED_DEST_WIDTH; |
|
894 |
dty2 = ((jfloat)(cachedDestBounds.y2 - dy2)) / OGLTR_CACHED_DEST_HEIGHT; |
|
895 |
||
896 |
// render composed texture to the destination surface |
|
897 |
j2d_glBegin(GL_QUADS); |
|
898 |
j2d_glMultiTexCoord2fARB(GL_TEXTURE0_ARB, cell->tx1, cell->ty1); |
|
899 |
j2d_glMultiTexCoord2fARB(GL_TEXTURE1_ARB, dtx1, dty1); |
|
900 |
j2d_glVertex2i(dx1, dy1); |
|
901 |
j2d_glMultiTexCoord2fARB(GL_TEXTURE0_ARB, cell->tx2, cell->ty1); |
|
902 |
j2d_glMultiTexCoord2fARB(GL_TEXTURE1_ARB, dtx2, dty1); |
|
903 |
j2d_glVertex2i(dx2, dy1); |
|
904 |
j2d_glMultiTexCoord2fARB(GL_TEXTURE0_ARB, cell->tx2, cell->ty2); |
|
905 |
j2d_glMultiTexCoord2fARB(GL_TEXTURE1_ARB, dtx2, dty2); |
|
906 |
j2d_glVertex2i(dx2, dy2); |
|
907 |
j2d_glMultiTexCoord2fARB(GL_TEXTURE0_ARB, cell->tx1, cell->ty2); |
|
908 |
j2d_glMultiTexCoord2fARB(GL_TEXTURE1_ARB, dtx1, dty2); |
|
909 |
j2d_glVertex2i(dx1, dy2); |
|
910 |
j2d_glEnd(); |
|
911 |
||
912 |
return JNI_TRUE; |
|
913 |
} |
|
914 |
||
915 |
static jboolean |
|
916 |
OGLTR_DrawGrayscaleGlyphNoCache(OGLContext *oglc, |
|
917 |
GlyphInfo *ginfo, jint x, jint y) |
|
918 |
{ |
|
919 |
jint tw, th; |
|
920 |
jint sx, sy, sw, sh; |
|
921 |
jint x0; |
|
922 |
jint w = ginfo->width; |
|
923 |
jint h = ginfo->height; |
|
924 |
||
925 |
if (glyphMode != MODE_NO_CACHE_GRAY) { |
|
926 |
OGLTR_DisableGlyphModeState(); |
|
927 |
CHECK_PREVIOUS_OP(OGL_STATE_MASK_OP); |
|
928 |
glyphMode = MODE_NO_CACHE_GRAY; |
|
929 |
} |
|
930 |
||
931 |
x0 = x; |
|
932 |
tw = OGLVC_MASK_CACHE_TILE_WIDTH; |
|
933 |
th = OGLVC_MASK_CACHE_TILE_HEIGHT; |
|
934 |
||
935 |
for (sy = 0; sy < h; sy += th, y += th) { |
|
936 |
x = x0; |
|
937 |
sh = ((sy + th) > h) ? (h - sy) : th; |
|
938 |
||
939 |
for (sx = 0; sx < w; sx += tw, x += tw) { |
|
940 |
sw = ((sx + tw) > w) ? (w - sx) : tw; |
|
941 |
||
942 |
OGLVertexCache_AddMaskQuad(oglc, |
|
943 |
sx, sy, x, y, sw, sh, |
|
944 |
w, ginfo->image); |
|
945 |
} |
|
946 |
} |
|
947 |
||
948 |
return JNI_TRUE; |
|
949 |
} |
|
950 |
||
951 |
static jboolean |
|
952 |
OGLTR_DrawLCDGlyphNoCache(OGLContext *oglc, OGLSDOps *dstOps, |
|
953 |
GlyphInfo *ginfo, jint x, jint y, |
|
954 |
jint rowBytesOffset, |
|
955 |
jboolean rgbOrder, jint contrast) |
|
956 |
{ |
|
957 |
GLfloat tx1, ty1, tx2, ty2; |
|
958 |
GLfloat dtx1, dty1, dtx2, dty2; |
|
959 |
jint tw, th; |
|
960 |
jint sx, sy, sw, sh, dxadj, dyadj; |
|
961 |
jint x0; |
|
962 |
jint w = ginfo->width; |
|
963 |
jint h = ginfo->height; |
|
964 |
GLenum pixelFormat = rgbOrder ? GL_RGB : GL_BGR; |
|
965 |
||
966 |
if (glyphMode != MODE_NO_CACHE_LCD) { |
|
967 |
OGLTR_DisableGlyphModeState(); |
|
968 |
CHECK_PREVIOUS_OP(GL_TEXTURE_2D); |
|
969 |
j2d_glPixelStorei(GL_UNPACK_ALIGNMENT, 1); |
|
970 |
||
971 |
if (oglc->blitTextureID == 0) { |
|
972 |
if (!OGLContext_InitBlitTileTexture(oglc)) { |
|
973 |
return JNI_FALSE; |
|
974 |
} |
|
975 |
} |
|
976 |
||
977 |
if (!OGLTR_EnableLCDGlyphModeState(oglc->blitTextureID, contrast)) { |
|
978 |
return JNI_FALSE; |
|
979 |
} |
|
980 |
||
981 |
// when a fragment shader is enabled, the texture function state is |
|
982 |
// ignored, so the following line is not needed... |
|
983 |
// OGLC_UPDATE_TEXTURE_FUNCTION(oglc, GL_MODULATE); |
|
984 |
||
985 |
glyphMode = MODE_NO_CACHE_LCD; |
|
986 |
} |
|
987 |
||
988 |
// rowBytes will always be a multiple of 3, so the following is safe |
|
989 |
j2d_glPixelStorei(GL_UNPACK_ROW_LENGTH, ginfo->rowBytes / 3); |
|
990 |
||
991 |
x0 = x; |
|
992 |
tx1 = 0.0f; |
|
993 |
ty1 = 0.0f; |
|
994 |
dtx1 = 0.0f; |
|
995 |
dty2 = 0.0f; |
|
996 |
tw = OGLTR_NOCACHE_TILE_SIZE; |
|
997 |
th = OGLTR_NOCACHE_TILE_SIZE; |
|
998 |
||
999 |
for (sy = 0; sy < h; sy += th, y += th) { |
|
1000 |
x = x0; |
|
1001 |
sh = ((sy + th) > h) ? (h - sy) : th; |
|
1002 |
||
1003 |
for (sx = 0; sx < w; sx += tw, x += tw) { |
|
1004 |
sw = ((sx + tw) > w) ? (w - sx) : tw; |
|
1005 |
||
1006 |
// update the source pointer offsets |
|
1007 |
j2d_glPixelStorei(GL_UNPACK_SKIP_PIXELS, sx); |
|
1008 |
j2d_glPixelStorei(GL_UNPACK_SKIP_ROWS, sy); |
|
1009 |
||
1010 |
// copy LCD mask into glyph texture tile |
|
1011 |
j2d_glActiveTextureARB(GL_TEXTURE0_ARB); |
|
1012 |
j2d_glTexSubImage2D(GL_TEXTURE_2D, 0, |
|
1013 |
0, 0, sw, sh, |
|
1014 |
pixelFormat, GL_UNSIGNED_BYTE, |
|
1015 |
ginfo->image + rowBytesOffset); |
|
1016 |
||
1017 |
// update the lower-right glyph texture coordinates |
|
1018 |
tx2 = ((GLfloat)sw) / OGLC_BLIT_TILE_SIZE; |
|
1019 |
ty2 = ((GLfloat)sh) / OGLC_BLIT_TILE_SIZE; |
|
1020 |
||
1021 |
// this accounts for lower-left origin of the destination region |
|
1022 |
dxadj = dstOps->xOffset + x; |
|
1023 |
dyadj = dstOps->yOffset + dstOps->height - (y + sh); |
|
1024 |
||
1025 |
// copy destination into cached texture tile (the lower-left |
|
1026 |
// corner of the destination region will be positioned at the |
|
1027 |
// lower-left corner (0,0) of the texture) |
|
1028 |
j2d_glActiveTextureARB(GL_TEXTURE1_ARB); |
|
1029 |
j2d_glCopyTexSubImage2D(GL_TEXTURE_2D, 0, |
|
1030 |
0, 0, |
|
1031 |
dxadj, dyadj, |
|
1032 |
sw, sh); |
|
1033 |
||
1034 |
// update the remaining destination texture coordinates |
|
1035 |
dtx2 = ((GLfloat)sw) / OGLTR_CACHED_DEST_WIDTH; |
|
1036 |
dty1 = ((GLfloat)sh) / OGLTR_CACHED_DEST_HEIGHT; |
|
1037 |
||
1038 |
// render composed texture to the destination surface |
|
1039 |
j2d_glBegin(GL_QUADS); |
|
1040 |
j2d_glMultiTexCoord2fARB(GL_TEXTURE0_ARB, tx1, ty1); |
|
1041 |
j2d_glMultiTexCoord2fARB(GL_TEXTURE1_ARB, dtx1, dty1); |
|
1042 |
j2d_glVertex2i(x, y); |
|
1043 |
j2d_glMultiTexCoord2fARB(GL_TEXTURE0_ARB, tx2, ty1); |
|
1044 |
j2d_glMultiTexCoord2fARB(GL_TEXTURE1_ARB, dtx2, dty1); |
|
1045 |
j2d_glVertex2i(x + sw, y); |
|
1046 |
j2d_glMultiTexCoord2fARB(GL_TEXTURE0_ARB, tx2, ty2); |
|
1047 |
j2d_glMultiTexCoord2fARB(GL_TEXTURE1_ARB, dtx2, dty2); |
|
1048 |
j2d_glVertex2i(x + sw, y + sh); |
|
1049 |
j2d_glMultiTexCoord2fARB(GL_TEXTURE0_ARB, tx1, ty2); |
|
1050 |
j2d_glMultiTexCoord2fARB(GL_TEXTURE1_ARB, dtx1, dty2); |
|
1051 |
j2d_glVertex2i(x, y + sh); |
|
1052 |
j2d_glEnd(); |
|
1053 |
} |
|
1054 |
} |
|
1055 |
||
1056 |
return JNI_TRUE; |
|
1057 |
} |
|
1058 |
||
1059 |
// see DrawGlyphList.c for more on this macro... |
|
1060 |
#define FLOOR_ASSIGN(l, r) \ |
|
1061 |
if ((r)<0) (l) = ((int)floor(r)); else (l) = ((int)(r)) |
|
1062 |
||
1063 |
void |
|
1064 |
OGLTR_DrawGlyphList(JNIEnv *env, OGLContext *oglc, OGLSDOps *dstOps, |
|
1065 |
jint totalGlyphs, jboolean usePositions, |
|
1066 |
jboolean subPixPos, jboolean rgbOrder, jint lcdContrast, |
|
1067 |
jfloat glyphListOrigX, jfloat glyphListOrigY, |
|
1068 |
unsigned char *images, unsigned char *positions) |
|
1069 |
{ |
|
1070 |
int glyphCounter; |
|
1071 |
||
1072 |
J2dTraceLn(J2D_TRACE_INFO, "OGLTR_DrawGlyphList"); |
|
1073 |
||
1074 |
RETURN_IF_NULL(oglc); |
|
1075 |
RETURN_IF_NULL(dstOps); |
|
1076 |
RETURN_IF_NULL(images); |
|
1077 |
if (usePositions) { |
|
1078 |
RETURN_IF_NULL(positions); |
|
1079 |
} |
|
1080 |
||
1081 |
glyphMode = MODE_NOT_INITED; |
|
1082 |
isCachedDestValid = JNI_FALSE; |
|
1083 |
||
1084 |
for (glyphCounter = 0; glyphCounter < totalGlyphs; glyphCounter++) { |
|
1085 |
jint x, y; |
|
1086 |
jfloat glyphx, glyphy; |
|
1087 |
jboolean grayscale, ok; |
|
1088 |
GlyphInfo *ginfo = (GlyphInfo *)jlong_to_ptr(NEXT_LONG(images)); |
|
1089 |
||
1090 |
if (ginfo == NULL) { |
|
1091 |
// this shouldn't happen, but if it does we'll just break out... |
|
1092 |
J2dRlsTraceLn(J2D_TRACE_ERROR, |
|
1093 |
"OGLTR_DrawGlyphList: glyph info is null"); |
|
1094 |
break; |
|
1095 |
} |
|
1096 |
||
1097 |
grayscale = (ginfo->rowBytes == ginfo->width); |
|
1098 |
||
1099 |
if (usePositions) { |
|
1100 |
jfloat posx = NEXT_FLOAT(positions); |
|
1101 |
jfloat posy = NEXT_FLOAT(positions); |
|
1102 |
glyphx = glyphListOrigX + posx + ginfo->topLeftX; |
|
1103 |
glyphy = glyphListOrigY + posy + ginfo->topLeftY; |
|
1104 |
FLOOR_ASSIGN(x, glyphx); |
|
1105 |
FLOOR_ASSIGN(y, glyphy); |
|
1106 |
} else { |
|
1107 |
glyphx = glyphListOrigX + ginfo->topLeftX; |
|
1108 |
glyphy = glyphListOrigY + ginfo->topLeftY; |
|
1109 |
FLOOR_ASSIGN(x, glyphx); |
|
1110 |
FLOOR_ASSIGN(y, glyphy); |
|
1111 |
glyphListOrigX += ginfo->advanceX; |
|
1112 |
glyphListOrigY += ginfo->advanceY; |
|
1113 |
} |
|
1114 |
||
1115 |
if (ginfo->image == NULL) { |
|
1116 |
continue; |
|
1117 |
} |
|
1118 |
||
1119 |
if (grayscale) { |
|
1120 |
// grayscale or monochrome glyph data |
|
1121 |
if (cacheStatus != CACHE_LCD && |
|
1122 |
ginfo->width <= OGLTR_CACHE_CELL_WIDTH && |
|
1123 |
ginfo->height <= OGLTR_CACHE_CELL_HEIGHT) |
|
1124 |
{ |
|
1125 |
ok = OGLTR_DrawGrayscaleGlyphViaCache(oglc, ginfo, x, y); |
|
1126 |
} else { |
|
1127 |
ok = OGLTR_DrawGrayscaleGlyphNoCache(oglc, ginfo, x, y); |
|
1128 |
} |
|
1129 |
} else { |
|
1130 |
// LCD-optimized glyph data |
|
1131 |
jint rowBytesOffset = 0; |
|
1132 |
||
1133 |
if (subPixPos) { |
|
1134 |
jint frac = (jint)((glyphx - x) * 3); |
|
1135 |
if (frac != 0) { |
|
1136 |
rowBytesOffset = 3 - frac; |
|
1137 |
x += 1; |
|
1138 |
} |
|
1139 |
} |
|
1140 |
||
1141 |
if (rowBytesOffset == 0 && |
|
1142 |
cacheStatus != CACHE_GRAY && |
|
1143 |
ginfo->width <= OGLTR_CACHE_CELL_WIDTH && |
|
1144 |
ginfo->height <= OGLTR_CACHE_CELL_HEIGHT) |
|
1145 |
{ |
|
1146 |
ok = OGLTR_DrawLCDGlyphViaCache(oglc, dstOps, |
|
1147 |
ginfo, x, y, |
|
1148 |
glyphCounter, totalGlyphs, |
|
1149 |
rgbOrder, lcdContrast); |
|
1150 |
} else { |
|
1151 |
ok = OGLTR_DrawLCDGlyphNoCache(oglc, dstOps, |
|
1152 |
ginfo, x, y, |
|
1153 |
rowBytesOffset, |
|
1154 |
rgbOrder, lcdContrast); |
|
1155 |
} |
|
1156 |
} |
|
1157 |
||
1158 |
if (!ok) { |
|
1159 |
break; |
|
1160 |
} |
|
1161 |
} |
|
1162 |
||
1163 |
OGLTR_DisableGlyphModeState(); |
|
1164 |
} |
|
1165 |
||
1166 |
JNIEXPORT void JNICALL |
|
1167 |
Java_sun_java2d_opengl_OGLTextRenderer_drawGlyphList |
|
1168 |
(JNIEnv *env, jobject self, |
|
1169 |
jint numGlyphs, jboolean usePositions, |
|
1170 |
jboolean subPixPos, jboolean rgbOrder, jint lcdContrast, |
|
1171 |
jfloat glyphListOrigX, jfloat glyphListOrigY, |
|
1172 |
jlongArray imgArray, jfloatArray posArray) |
|
1173 |
{ |
|
1174 |
unsigned char *images; |
|
1175 |
||
1176 |
J2dTraceLn(J2D_TRACE_INFO, "OGLTextRenderer_drawGlyphList"); |
|
1177 |
||
1178 |
images = (unsigned char *) |
|
1179 |
(*env)->GetPrimitiveArrayCritical(env, imgArray, NULL); |
|
1180 |
if (images != NULL) { |
|
1181 |
OGLContext *oglc = OGLRenderQueue_GetCurrentContext(); |
|
1182 |
OGLSDOps *dstOps = OGLRenderQueue_GetCurrentDestination(); |
|
1183 |
||
1184 |
if (usePositions) { |
|
1185 |
unsigned char *positions = (unsigned char *) |
|
1186 |
(*env)->GetPrimitiveArrayCritical(env, posArray, NULL); |
|
1187 |
if (positions != NULL) { |
|
1188 |
OGLTR_DrawGlyphList(env, oglc, dstOps, |
|
1189 |
numGlyphs, usePositions, |
|
1190 |
subPixPos, rgbOrder, lcdContrast, |
|
1191 |
glyphListOrigX, glyphListOrigY, |
|
1192 |
images, positions); |
|
1193 |
(*env)->ReleasePrimitiveArrayCritical(env, posArray, |
|
1194 |
positions, JNI_ABORT); |
|
1195 |
} |
|
1196 |
} else { |
|
1197 |
OGLTR_DrawGlyphList(env, oglc, dstOps, |
|
1198 |
numGlyphs, usePositions, |
|
1199 |
subPixPos, rgbOrder, lcdContrast, |
|
1200 |
glyphListOrigX, glyphListOrigY, |
|
1201 |
images, NULL); |
|
1202 |
} |
|
1203 |
||
1204 |
// 6358147: reset current state, and ensure rendering is |
|
1205 |
// flushed to dest |
|
1206 |
if (oglc != NULL) { |
|
1207 |
RESET_PREVIOUS_OP(); |
|
1208 |
j2d_glFlush(); |
|
1209 |
} |
|
1210 |
||
1211 |
(*env)->ReleasePrimitiveArrayCritical(env, imgArray, |
|
1212 |
images, JNI_ABORT); |
|
1213 |
} |
|
1214 |
} |
|
1215 |
||
1216 |
#endif /* !HEADLESS */ |