| /* |
| * Copyright (c) 2005, 2008, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| #ifndef OGLRenderQueue_h_Included |
| #define OGLRenderQueue_h_Included |
| |
| #include "OGLContext.h" |
| #include "OGLSurfaceData.h" |
| |
| /* |
| * The following macros are used to pick values (of the specified type) off |
| * the queue. |
| */ |
| #define NEXT_VAL(buf, type) (((type *)((buf) += sizeof(type)))[-1]) |
| #define NEXT_BYTE(buf) NEXT_VAL(buf, unsigned char) |
| #define NEXT_INT(buf) NEXT_VAL(buf, jint) |
| #define NEXT_FLOAT(buf) NEXT_VAL(buf, jfloat) |
| #define NEXT_BOOLEAN(buf) (jboolean)NEXT_INT(buf) |
| #define NEXT_LONG(buf) NEXT_VAL(buf, jlong) |
| #define NEXT_DOUBLE(buf) NEXT_VAL(buf, jdouble) |
| |
| /* |
| * Increments a pointer (buf) by the given number of bytes. |
| */ |
| #define SKIP_BYTES(buf, numbytes) buf += (numbytes) |
| |
| /* |
| * Extracts a value at the given offset from the provided packed value. |
| */ |
| #define EXTRACT_VAL(packedval, offset, mask) \ |
| (((packedval) >> (offset)) & (mask)) |
| #define EXTRACT_BYTE(packedval, offset) \ |
| (unsigned char)EXTRACT_VAL(packedval, offset, 0xff) |
| #define EXTRACT_BOOLEAN(packedval, offset) \ |
| (jboolean)EXTRACT_VAL(packedval, offset, 0x1) |
| |
| /* |
| * Parameter used by the RESET_PREVIOUS_OP() convenience macro, which |
| * indicates that any "open" state (such as an unmatched glBegin() or |
| * glEnable(GL_TEXTURE_2D)) should be completed before the following operation |
| * is performed. SET_SURFACES is an example of an operation that needs to |
| * call RESET_PREVIOUS_OP() before completing the surface change operation. |
| */ |
| #define OGL_STATE_RESET -1 |
| |
| /* |
| * Parameter passed to the CHECK_PREVIOUS_OP() macro to indicate that the |
| * following operation represents a "simple" state change. A simple state |
| * change is one that is allowed to occur within a series of texturing |
| * operations; in other words, this type of state change can occur without |
| * first calling glDisable(GL_TEXTURE_2D). An example of such an operation |
| * is SET_RECT_CLIP. |
| */ |
| #define OGL_STATE_CHANGE -2 |
| |
| /* |
| * Parameter passed to the CHECK_PREVIOUS_OP() macro to indicate that the |
| * following operation represents an operation that uses an alpha mask, |
| * such as OGLMaskFill and OGLTR_DrawGrayscaleGlyphNoCache(). |
| */ |
| #define OGL_STATE_MASK_OP -3 |
| |
| /* |
| * Parameter passed to the CHECK_PREVIOUS_OP() macro to indicate that the |
| * following operation represents an operation that uses the glyph cache, |
| * such as OGLTR_DrawGrayscaleGlyphViaCache(). |
| */ |
| #define OGL_STATE_GLYPH_OP -4 |
| |
| /* |
| * Parameter passed to the CHECK_PREVIOUS_OP() macro to indicate that the |
| * following operation represents an operation that renders a |
| * parallelogram via a fragment program (see OGLRenderer). |
| */ |
| #define OGL_STATE_PGRAM_OP -5 |
| |
| /* |
| * Initializes the "previous operation" state to its default value. |
| */ |
| #define INIT_PREVIOUS_OP() previousOp = OGL_STATE_RESET |
| |
| /* |
| * These macros now simply delegate to the CheckPreviousOp() method. |
| */ |
| #define CHECK_PREVIOUS_OP(op) OGLRenderQueue_CheckPreviousOp(op) |
| #define RESET_PREVIOUS_OP() CHECK_PREVIOUS_OP(OGL_STATE_RESET) |
| |
| /* |
| * The following macros allow the caller to return (or continue) if the |
| * provided value is NULL. (The strange else clause is included below to |
| * allow for a trailing ';' after RETURN/CONTINUE_IF_NULL() invocations.) |
| */ |
| #define ACT_IF_NULL(ACTION, value) \ |
| if ((value) == NULL) { \ |
| J2dTraceLn1(J2D_TRACE_ERROR, \ |
| "%s is null", #value); \ |
| ACTION; \ |
| } else do { } while (0) |
| #define RETURN_IF_NULL(value) ACT_IF_NULL(return, value) |
| #define CONTINUE_IF_NULL(value) ACT_IF_NULL(continue, value) |
| |
| /* |
| * Exports. |
| */ |
| extern jint previousOp; |
| |
| OGLContext *OGLRenderQueue_GetCurrentContext(); |
| OGLSDOps *OGLRenderQueue_GetCurrentDestination(); |
| void OGLRenderQueue_CheckPreviousOp(jint op); |
| |
| #endif /* OGLRenderQueue_h_Included */ |