1/*
2 * Copyright (c) 2003, 2007, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26#ifndef HEADLESS
27
28#include <stdlib.h>
29#include <jlong.h>
30
31#include "OGLMaskBlit.h"
32#include "OGLRenderQueue.h"
33#include "OGLSurfaceData.h"
34
35/**
36 * REMIND: This method assumes that the dimensions of the incoming pixel
37 * array are less than or equal to the cached blit texture tile;
38 * these are rather fragile assumptions, and should be cleaned up...
39 */
40void
41OGLMaskBlit_MaskBlit(JNIEnv *env, OGLContext *oglc,
42 jint dstx, jint dsty,
43 jint width, jint height,
44 void *pPixels)
45{
46 GLfloat tx1, ty1, tx2, ty2;
47
48 J2dTraceLn(J2D_TRACE_INFO, "OGLMaskBlit_MaskBlit");
49
50 if (width <= 0 || height <= 0) {
51 J2dTraceLn(J2D_TRACE_WARNING,
52 "OGLMaskBlit_MaskBlit: invalid dimensions");
53 return;
54 }
55
56 RETURN_IF_NULL(pPixels);
57 RETURN_IF_NULL(oglc);
58 CHECK_PREVIOUS_OP(GL_TEXTURE_2D);
59
60 if (oglc->blitTextureID == 0) {
61 if (!OGLContext_InitBlitTileTexture(oglc)) {
62 J2dRlsTraceLn(J2D_TRACE_ERROR,
63 "OGLMaskBlit_MaskBlit: could not init blit tile");
64 return;
65 }
66 }
67
68 // set up texture parameters
69 j2d_glBindTexture(GL_TEXTURE_2D, oglc->blitTextureID);
70 OGLC_UPDATE_TEXTURE_FUNCTION(oglc, GL_MODULATE);
71 j2d_glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
72 j2d_glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
73
74 // copy system memory IntArgbPre surface into cached texture
75 j2d_glTexSubImage2D(GL_TEXTURE_2D, 0,
76 0, 0, width, height,
77 GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, pPixels);
78
79 tx1 = 0.0f;
80 ty1 = 0.0f;
81 tx2 = ((GLfloat)width) / OGLC_BLIT_TILE_SIZE;
82 ty2 = ((GLfloat)height) / OGLC_BLIT_TILE_SIZE;
83
84 // render cached texture to the OpenGL surface
85 j2d_glBegin(GL_QUADS);
86 j2d_glTexCoord2f(tx1, ty1); j2d_glVertex2i(dstx, dsty);
87 j2d_glTexCoord2f(tx2, ty1); j2d_glVertex2i(dstx + width, dsty);
88 j2d_glTexCoord2f(tx2, ty2); j2d_glVertex2i(dstx + width, dsty + height);
89 j2d_glTexCoord2f(tx1, ty2); j2d_glVertex2i(dstx, dsty + height);
90 j2d_glEnd();
91}
92
93#endif /* !HEADLESS */
94