[patch] gl: fix gl operand translation

commit 9890479b7edc17c3d558682354a0a37d193ff432
Author: Henry Song <[email protected]>
Date:   Tue Jul 24 15:07:19 2012 -0700

    gl: translate proper matrix depending up type of gl_operand

fix bug in test case radial-gradient-mask-source

diff --git a/src/cairo-gl-operand.c b/src/cairo-gl-operand.c
index 033d45e..40afec4 100644
--- a/src/cairo-gl-operand.c
+++ b/src/cairo-gl-operand.c
@@ -364,8 +364,24 @@ void
 _cairo_gl_operand_translate (cairo_gl_operand_t *operand,
                  double tx, double ty)
 {
-    operand->texture.attributes.matrix.x0 -= tx * operand->texture.attributes.matrix.xx;
-    operand->texture.attributes.matrix.y0 -= ty * operand->texture.attributes.matrix.yy;
+    switch (operand->type) {
+    case CAIRO_GL_OPERAND_TEXTURE:
+    operand->texture.attributes.matrix.x0 -= tx * operand->texture.attributes.matrix.xx;
+    operand->texture.attributes.matrix.y0 -= ty * operand->texture.attributes.matrix.yy;
+    break;
+    case CAIRO_GL_OPERAND_LINEAR_GRADIENT:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_A0:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_NONE:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_EXT:
+    operand->gradient.m.x0 -= tx * operand->gradient.m.xx;
+    operand->gradient.m.y0 -= ty * operand->gradient.m.yy;
+    break;
+    case CAIRO_GL_OPERAND_NONE:
+    case CAIRO_GL_OPERAND_CONSTANT:
+    case CAIRO_GL_OPERAND_COUNT:
+    default:
+    break;
+    }
 }

 static cairo_status_t

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