virgl: use debug_printf instead of fprintf

While we're at it, prefix the string with "VIRGL: ", to match similar
code elsewhere in virgl.

Fixes: d7b31969767 ("virgl: Return an error if we use fp64 on top of GLES")
Signed-off-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Reviewed-by: Elie Tournier <elie.tournier@collabora.com>

diff --git a/src/gallium/drivers/virgl/virgl_tgsi.c b/src/gallium/drivers/virgl/virgl_tgsi.c
index 7a06a57..9ec552a 100644 (file)
--- a/src/gallium/drivers/virgl/virgl_tgsi.c
+++ b/src/gallium/drivers/virgl/virgl_tgsi.c
@@ -85,7 +85,7 @@ virgl_tgsi_transform_instruction(struct tgsi_transform_context *ctx,
    if (vtctx->fake_fp64 &&
        (tgsi_opcode_infer_src_type(inst->Instruction.Opcode, 0) == TGSI_TYPE_DOUBLE ||
         tgsi_opcode_infer_dst_type(inst->Instruction.Opcode, 0) == TGSI_TYPE_DOUBLE)) {
-      fprintf(stderr, "ARB_gpu_shader_fp64 is exposed but not supported.");
+      debug_printf("VIRGL: ARB_gpu_shader_fp64 is exposed but not supported.");
       return;
    }