46 /**
47 */
48 public class JSWBackend extends TreeScanner {
49
50 private final JSLParser parser;
51 private final String body;
52
53 public JSWBackend(JSLParser parser, ProgramUnit program) {
54 // TODO: will be removed once we clean up static usage
55 resetStatics();
56
57 this.parser = parser;
58
59 JSWTreeScanner scanner = new JSWTreeScanner();
60 scanner.scan(program);
61 this.body = scanner.getResult();
62 }
63
64 public final String getGenCode(String effectName,
65 String peerName,
66 String interfaceName)
67 {
68 Map<String, Variable> vars = parser.getSymbolTable().getGlobalVariables();
69 StringBuilder interfaceDecl = new StringBuilder();
70 StringBuilder constants = new StringBuilder();
71 StringBuilder samplers = new StringBuilder();
72 StringBuilder cleanup = new StringBuilder();
73 StringBuilder srcRects = new StringBuilder();
74 StringBuilder posDecls = new StringBuilder();
75 StringBuilder pixInitY = new StringBuilder();
76 StringBuilder pixInitX = new StringBuilder();
77 StringBuilder posIncrY = new StringBuilder();
78 StringBuilder posInitY = new StringBuilder();
79 StringBuilder posIncrX = new StringBuilder();
80 StringBuilder posInitX = new StringBuilder();
81
82 // TODO: only need to declare these if pixcoord is referenced
83 // somewhere in the program...
84 pixInitY.append("float pixcoord_y = (float)dy;\n");
85 pixInitX.append("float pixcoord_x = (float)dx;\n");
86
87 for (Variable v : vars.values()) {
88 if (v.getQualifier() == Qualifier.CONST && v.getConstValue() == null) {
192 // shaders that declare LSAMPLERs would require mapped
193 // inputs and so far that is only Perspective and
194 // Displacement, both of which override getTC() and return
195 // only 4 values.
196 srcRects.append("getTextureCoordinates(" + i + ", src" + i + "Rect,\n");
197 srcRects.append(" src" + i + "InputBounds.x, src" + i + "InputBounds.y,\n");
198 srcRects.append(" src" + i + "w, src" + i + "h,\n");
199 srcRects.append(" dstBounds, src" + i + "Transform);\n");
200 }
201
202 posDecls.append("float inc" + i + "_x = (src" + i + "Rect[2] - src" + i + "Rect[0]) / dstw;\n");
203 posDecls.append("float inc" + i + "_y = (src" + i + "Rect[3] - src" + i + "Rect[1]) / dsth;\n");
204
205 posInitY.append("float pos" + i + "_y = src" + i + "Rect[1] + inc" + i + "_y*0.5f;\n");
206 posInitX.append("float pos" + i + "_x = src" + i + "Rect[0] + inc" + i + "_x*0.5f;\n");
207 posIncrX.append("pos" + i + "_x += inc" + i + "_x;\n");
208 posIncrY.append("pos" + i + "_y += inc" + i + "_y;\n");
209 }
210 }
211
212 if (interfaceName != null) {
213 interfaceDecl.append("implements "+interfaceName);
214 }
215
216 Reader template = new InputStreamReader(getClass().getResourceAsStream("JSWGlue.stg"));
217 StringTemplateGroup group = new StringTemplateGroup(template, DefaultTemplateLexer.class);
218 StringTemplate glue = group.getInstanceOf("glue");
219 glue.setAttribute("effectName", effectName);
220 glue.setAttribute("peerName", peerName);
221 glue.setAttribute("interfaceDecl", interfaceDecl.toString());
222 glue.setAttribute("usercode", usercode.toString());
223 glue.setAttribute("samplers", samplers.toString());
224 glue.setAttribute("cleanup", cleanup.toString());
225 glue.setAttribute("srcRects", srcRects.toString());
226 glue.setAttribute("constants", constants.toString());
227 glue.setAttribute("posDecls", posDecls.toString());
228 glue.setAttribute("pixInitY", pixInitY.toString());
229 glue.setAttribute("pixInitX", pixInitX.toString());
230 glue.setAttribute("posIncrY", posIncrY.toString());
231 glue.setAttribute("posInitY", posInitY.toString());
232 glue.setAttribute("posIncrX", posIncrX.toString());
233 glue.setAttribute("posInitX", posInitX.toString());
234 glue.setAttribute("body", body);
235 return glue.toString();
236 }
237
238 // TODO: need better mechanism for querying fields
239 private static char[] fields = {'x', 'y', 'z', 'w'};
240 public static String getSuffix(int i) {
|
46 /**
47 */
48 public class JSWBackend extends TreeScanner {
49
50 private final JSLParser parser;
51 private final String body;
52
53 public JSWBackend(JSLParser parser, ProgramUnit program) {
54 // TODO: will be removed once we clean up static usage
55 resetStatics();
56
57 this.parser = parser;
58
59 JSWTreeScanner scanner = new JSWTreeScanner();
60 scanner.scan(program);
61 this.body = scanner.getResult();
62 }
63
64 public final String getGenCode(String effectName,
65 String peerName,
66 String genericsName,
67 String interfaceName)
68 {
69 Map<String, Variable> vars = parser.getSymbolTable().getGlobalVariables();
70 StringBuilder genericsDecl = new StringBuilder();
71 StringBuilder interfaceDecl = new StringBuilder();
72 StringBuilder constants = new StringBuilder();
73 StringBuilder samplers = new StringBuilder();
74 StringBuilder cleanup = new StringBuilder();
75 StringBuilder srcRects = new StringBuilder();
76 StringBuilder posDecls = new StringBuilder();
77 StringBuilder pixInitY = new StringBuilder();
78 StringBuilder pixInitX = new StringBuilder();
79 StringBuilder posIncrY = new StringBuilder();
80 StringBuilder posInitY = new StringBuilder();
81 StringBuilder posIncrX = new StringBuilder();
82 StringBuilder posInitX = new StringBuilder();
83
84 // TODO: only need to declare these if pixcoord is referenced
85 // somewhere in the program...
86 pixInitY.append("float pixcoord_y = (float)dy;\n");
87 pixInitX.append("float pixcoord_x = (float)dx;\n");
88
89 for (Variable v : vars.values()) {
90 if (v.getQualifier() == Qualifier.CONST && v.getConstValue() == null) {
194 // shaders that declare LSAMPLERs would require mapped
195 // inputs and so far that is only Perspective and
196 // Displacement, both of which override getTC() and return
197 // only 4 values.
198 srcRects.append("getTextureCoordinates(" + i + ", src" + i + "Rect,\n");
199 srcRects.append(" src" + i + "InputBounds.x, src" + i + "InputBounds.y,\n");
200 srcRects.append(" src" + i + "w, src" + i + "h,\n");
201 srcRects.append(" dstBounds, src" + i + "Transform);\n");
202 }
203
204 posDecls.append("float inc" + i + "_x = (src" + i + "Rect[2] - src" + i + "Rect[0]) / dstw;\n");
205 posDecls.append("float inc" + i + "_y = (src" + i + "Rect[3] - src" + i + "Rect[1]) / dsth;\n");
206
207 posInitY.append("float pos" + i + "_y = src" + i + "Rect[1] + inc" + i + "_y*0.5f;\n");
208 posInitX.append("float pos" + i + "_x = src" + i + "Rect[0] + inc" + i + "_x*0.5f;\n");
209 posIncrX.append("pos" + i + "_x += inc" + i + "_x;\n");
210 posIncrY.append("pos" + i + "_y += inc" + i + "_y;\n");
211 }
212 }
213
214 if (genericsName != null) {
215 genericsDecl.append("<"+genericsName+">");
216 }
217
218 if (interfaceName != null) {
219 interfaceDecl.append("implements "+interfaceName);
220 }
221
222 Reader template = new InputStreamReader(getClass().getResourceAsStream("JSWGlue.stg"));
223 StringTemplateGroup group = new StringTemplateGroup(template, DefaultTemplateLexer.class);
224 StringTemplate glue = group.getInstanceOf("glue");
225 glue.setAttribute("effectName", effectName);
226 glue.setAttribute("peerName", peerName);
227 glue.setAttribute("genericsDecl", genericsDecl.toString());
228 glue.setAttribute("interfaceDecl", interfaceDecl.toString());
229 glue.setAttribute("usercode", usercode.toString());
230 glue.setAttribute("samplers", samplers.toString());
231 glue.setAttribute("cleanup", cleanup.toString());
232 glue.setAttribute("srcRects", srcRects.toString());
233 glue.setAttribute("constants", constants.toString());
234 glue.setAttribute("posDecls", posDecls.toString());
235 glue.setAttribute("pixInitY", pixInitY.toString());
236 glue.setAttribute("pixInitX", pixInitX.toString());
237 glue.setAttribute("posIncrY", posIncrY.toString());
238 glue.setAttribute("posInitY", posInitY.toString());
239 glue.setAttribute("posIncrX", posIncrX.toString());
240 glue.setAttribute("posInitX", posInitX.toString());
241 glue.setAttribute("body", body);
242 return glue.toString();
243 }
244
245 // TODO: need better mechanism for querying fields
246 private static char[] fields = {'x', 'y', 'z', 'w'};
247 public static String getSuffix(int i) {
|