JBR-7046 Tolerate subpixelResolution=0 in Metal and OGL

JetBrains · May 3, 2024 · b37c24d · b37c24d
1 parent b62bb2f
commit b37c24d
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Showing 2 changed files with 20 additions and 36 deletions.
diff --git a/src/java.desktop/macosx/native/libawt_lwawt/java2d/metal/MTLTextRenderer.m b/src/java.desktop/macosx/native/libawt_lwawt/java2d/metal/MTLTextRenderer.m
@@ -660,19 +660,17 @@ static void DisableColorGlyphPainting(MTLContext *mtlc) {
         int ry = ginfo->subpixelResolutionY;
         ADJUST_SUBPIXEL_GLYPH_POSITION(glyphx, rx);
         ADJUST_SUBPIXEL_GLYPH_POSITION(glyphy, ry);
-        int subx = 0, suby = 0;
-        // see DrawGlyphList.c FLOOR_ASSIGN & getSubpixelGlyphImage
-        if (glyphx >= 0.0f && glyphy >= 0.0f) {
-            x = (int) glyphx;
-            y = (int) glyphy;
-            subx = ((int) (glyphx * (float) rx)) % rx;
-            suby = ((int) (glyphy * (float) ry)) % ry;
+        float fx = floor(glyphx);
+        float fy = floor(glyphy);
+        x = (int) fx;
+        y = (int) fy;
+        int subimage;
+        if ((rx == 1 && ry == 1) || rx <= 0 || ry <= 0) {
+            subimage = 0;
         } else {
-            float fx = floor(glyphx), fy = floor(glyphy);
-            x = (int) fx;
-            y = (int) fy;
-            subx = (int) ((glyphx - fx) * (float) rx);
-            suby = (int) ((glyphy - fy) * (float) ry);
+            int subx = (int) ((glyphx - fx) * (float) rx);
+            int suby = (int) ((glyphy - fy) * (float) ry);
+            subimage = subx + suby * rx;
         }
 
         if (ginfo->image == NULL) {
@@ -684,12 +682,6 @@ static void DisableColorGlyphPainting(MTLContext *mtlc) {
         J2dTraceLn1(J2D_TRACE_INFO, "rowBytes = %d", ginfo->rowBytes);
         if (ginfo->format == sun_font_StrikeCache_PIXEL_FORMAT_GREYSCALE) {
             // grayscale or monochrome glyph data
-            int subimage;
-            if ((rx == 1 && ry == 1) || rx <= 0 || ry <= 0) {
-                subimage = 0;
-            } else {
-                subimage = subx + suby * rx;
-            }
             if (ginfo->width <= MTLTR_CACHE_CELL_WIDTH &&
                 ginfo->height <= MTLTR_CACHE_CELL_HEIGHT)
             {

diff --git a/src/java.desktop/share/native/common/java2d/opengl/OGLTextRenderer.c b/src/java.desktop/share/native/common/java2d/opengl/OGLTextRenderer.c
@@ -1297,19 +1297,17 @@ OGLTR_DrawGlyphList(JNIEnv *env, OGLContext *oglc, OGLSDOps *dstOps,
         int ry = ginfo->subpixelResolutionY;
         ADJUST_SUBPIXEL_GLYPH_POSITION(glyphx, rx);
         ADJUST_SUBPIXEL_GLYPH_POSITION(glyphy, ry);
-        int subx = 0, suby = 0;
-        // see DrawGlyphList.c FLOOR_ASSIGN & getSubpixelGlyphImage
-        if (glyphx >= 0.0f && glyphy >= 0.0f) {
-            x = (int) glyphx;
-            y = (int) glyphy;
-            subx = ((int) (glyphx * (float) rx)) % rx;
-            suby = ((int) (glyphy * (float) ry)) % ry;
+        float fx = floor(glyphx);
+        float fy = floor(glyphy);
+        x = (int) fx;
+        y = (int) fy;
+        int subimage;
+        if ((rx == 1 && ry == 1) || rx <= 0 || ry <= 0) {
+            subimage = 0;
         } else {
-            float fx = floor(glyphx), fy = floor(glyphy);
-            x = (int) fx;
-            y = (int) fy;
-            subx = (int) ((glyphx - fx) * (float) rx);
-            suby = (int) ((glyphy - fy) * (float) ry);
+            int subx = (int) ((glyphx - fx) * (float) rx);
+            int suby = (int) ((glyphy - fy) * (float) ry);
+            subimage = subx + suby * rx;
         }
 
         if (ginfo->image == NULL) {
@@ -1321,12 +1319,6 @@ OGLTR_DrawGlyphList(JNIEnv *env, OGLContext *oglc, OGLSDOps *dstOps,
                 OGLContext_InitGrayRenderHints(env, oglc);
             }
             // grayscale or monochrome glyph data
-            int subimage;
-            if ((rx == 1 && ry == 1) || rx <= 0 || ry <= 0) {
-                subimage = 0;
-            } else {
-                subimage = subx + suby * rx;
-            }
             if (ginfo->width <= OGLTR_CACHE_CELL_WIDTH &&
                 ginfo->height <= OGLTR_CACHE_CELL_HEIGHT)
             {