mesa: move, clean-up _mesa_print_texture()

1 files changed, 61 insertions, 0 deletions

diff --git a/src/mesa/main/debug.c b/src/mesa/main/debug.c
index ee8cc29301..a42113edca 100644
--- a/src/mesa/main/debug.c
+++ b/src/mesa/main/debug.c
@@ -574,3 +574,64 @@ _mesa_dump_stencil_buffer(const char *filename)
    _mesa_free(buf);
    _mesa_free(buf2);
 }
+
+
+/**
+ * Quick and dirty function to "print" a texture to stdout.
+ */
+void
+_mesa_print_texture(GLcontext *ctx, const struct gl_texture_image *img)
+{
+#if CHAN_TYPE != GL_UNSIGNED_BYTE
+   _mesa_problem(NULL, "PrintTexture not supported");
+#else
+   GLuint i, j, c;
+   const GLubyte *data = (const GLubyte *) img->Data;
+
+   if (!data) {
+      _mesa_printf("No texture data\n");
+      return;
+   }
+
+   /* XXX add more formats or make into a new format utility function */
+   switch (img->TexFormat) {
+      case MESA_FORMAT_A8:
+      case MESA_FORMAT_L8:
+      case MESA_FORMAT_I8:
+      case MESA_FORMAT_CI8:
+         c = 1;
+         break;
+      case MESA_FORMAT_AL88:
+      case MESA_FORMAT_AL88_REV:
+         c = 2;
+         break;
+      case MESA_FORMAT_RGB888:
+      case MESA_FORMAT_BGR888:
+         c = 3;
+         break;
+      case MESA_FORMAT_RGBA8888:
+      case MESA_FORMAT_ARGB8888:
+         c = 4;
+         break;
+      default:
+         _mesa_problem(NULL, "error in PrintTexture\n");
+         return;
+   }
+
+   for (i = 0; i < img->Height; i++) {
+      for (j = 0; j < img->Width; j++) {
+         if (c==1)
+            _mesa_printf("%02x  ", data[0]);
+         else if (c==2)
+            _mesa_printf("%02x%02x  ", data[0], data[1]);
+         else if (c==3)
+            _mesa_printf("%02x%02x%02x  ", data[0], data[1], data[2]);
+         else if (c==4)
+            _mesa_printf("%02x%02x%02x%02x  ", data[0], data[1], data[2], data[3]);
+         data += (img->RowStride - img->Width) * c;
+      }
+      /* XXX use img->ImageStride here */
+      _mesa_printf("\n");
+   }
+#endif
+}